EP6000 GENERAL, MECHANICAL/ ELECTRICAL
CONTENTS GENERAL 1. SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1 2. TECHNICAL HIGHLIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-2 3. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-3 4. SPACE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-7 5. PRECAUTIONS FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . G-8 6. PRECAUTIONS FOR USE . . . . . . . . . . . . . . . .
CONTENTS 10. OPTICAL SECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-34 10-1. Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-34 10-2. Function of Exposure Components . . . . . . . . . . . . . . . . . . . M-36 10-3. Exposure Lamp LA1 Control . . . . . . . . . . . . . . . . . . . . . . . . . M-37 10-4. Intensity Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-42 10-5.
CONTENTS 15. PAPER TAKE-UP/FEED SECTION . . . . . . . . . . . . . . . . . . . . . . . . M-95 15-1. Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-95 15-2. Drawer-in-Position Detection . . . . . . . . . . . . . . . . . . . . . . . . M-96 15-3. Paper Empty Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-97 15-4. Paper Lifting/Lowering Mechanism/Control . . . . . . . . . . . . . M-99 15-5.
CONTENTS 18-3. Toner Conveying/Collecting Mechanism . . . . . . . . . . . . . . . M-152 18-4. Pre-Cleaning Erase Lamp LA5 ON/OFF Control. . . . . . . . . M-154 18-5. PC Drum Paper Separator Fingers Moving Mechanism/ Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-155 18-6. Cleaning Bias (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-159 19. MAIN ERASE LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-160 19-1.
CONTENTS 24-7. Leading Edge Guide Plate and Duplex Paper Take-Up Drive Mechanism/Control . . . . . . . . . . . . . . . . . . . . . . . . . . . M-195 24-8. Duplex Paper Take-Up Operation . . . . . . . . . . . . . . . . . . . . M-197 25. POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .M-201 26. MEMORY BACKUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 SAFETY INFORMATION (ALL Areas) CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. (Denmark only) ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandøren.
2 TECHNICAL HIGHLIGHTS This copier has the following mechanical features. ◆ The original is aligned at the rear corner, while the copy paper is fed through the center of the copier. ◆ Three fusing heater lamps are used, which enables the copier to complete warming up in less than 5 minutes. (For details, see p. M-164.) ◆ All original size detecting sensors are fixed, enhancing measuring accuracy. (For details, see p. M-54.
3 SPECIFICATIONS TYPE : Console PLATEN : Stationary PHOTOCONDUCTOR : Organic Photoconductor COPYING SYSTEM : Electrostatic dry powdered image transfer to plain paper PAPER FEEDING SYSTEM : 4-way system Multi Bypass Table: 50 sheets of paper 1st and 2nd Drawer: Each holding up to 500 sheets of paper 3rd Drawer: Holding up to 2,500 sheets of paper EXPOSURE SYSTEM : Mirror scanning, slit exposure DEVELOPING SYSTEM : New Micro-Toning system CHARGING SYSTEM : Double-wire DC negative corona with S
Dimensions Medium COPY MEDIUM: Paper Source 1st to 2nd Drawer 3rd Drawer Multi Bypass Table Plain paper (60 to 90 g/m 2 ) O O O Translucent paper — — Transparencies — — Thick paper (90 to 157 g/m 2) — — Recycled paper O O O Maximum (Width × Length) 297 × 432 mm A4C 297 × 432 mm Minimum (Width × Length) 140 × 182 mm 8-1/2"×11"C 100 × 140 mm O: Permissible —: Not permissible sheets or less L: Lengthwise, C: Crosswise : Conditionally permissible ... 20 WARMING-UP TIME : 5 min.
MULTIPLE COPIES : 1 to 999 copies (count-down system) ZOOM RATIOS Area Mode Full Size Reduction Fixed Enlargement Metric Inch ×1.000 ×1.000 ×0.816 ×0.707 ×0.500 ×0.785 ×0.733 ×0.647 ×0.500 ×2.000 ×1.414 ×1.154 ×2.000 ×1.545 ×1.294 ×1.214 Variable ×0.500 to ×2.000 (in 0.001 increments) LENS : Through Lens (F=5.
DIMENSIONS : Copier only Width .... 746 mm or 29-1/4" Depth .... 720 mm or 28-1/4" Height ... 969 mm or 38-1/4" WEIGHT : 195 kg or 430 lbs.
4 SPACE REQUIREMENTS To ensure easy copier operation, supply replacement, and service maintenance, adhere to the recommended space requirements detailed below. * Be sure to allow a clearance of 150 mm (6") or more at the back of the 300 mm or 11-3/4" 1335 mm or 52-1/2" copier as there is a ventilation duct.
5 PRECAUTIONS FOR INSTALLATION Installation Site To ensure safety and utmost performance of the copier, the copier should NOT be used in a place: ● Where it will be subjected to extremely high or low temperature or humidity. ● Which is exposed to direct sunlight. ● Which is in the direct air stream of an air conditioner, heater or ventilator. ● Which puts the operator in the direct stream of exhaust from the copier. ● Which has poor ventilation. ● Where ammonia gas might be generated.
6 PRECAUTIONS FOR USE To ensure that the copier is used in an optimum condition, observe the following precautions. ● Never place a heavy object on the copier or subject the copier to shocks. ● Insert the power plug all the way into the outlet. ● Do not attempt to remove any panel or cover which is secured while the copier is making copies. ● Do not turn OFF the Power Switch while the copier is making copies. ● Provide good ventilation when making a large number of copies continuously.
7 HANDLING OF THE CONSUMABLES Before using any consumables, always read the label on its container carefully. ● Use the right toner. The applicable copier model name is indicated on the Toner Bottle. ● Paper is apt to be easily damaged by dampness. To prevent absorption of moisture, store paper, which has been removed from its wrapper but not loaded into the Drawer, in a sealed plastic bag in a cool, dark place. ● Keep consumables out of the reach of children. ● Do not touch the PC Drum with bare hands.
8 SYSTEM OPTIONS 1 2 3 4 5 8 7 1. 2. 3. 4. 5. 6. 7. 8.
9 PARTS IDENTIFICATION Control Panel Manual Bypass Table Upper Front Door Lower Front Door Power Switch 1st Drawer 2nd Drawer Right Door Lock Release Lever Total Counter Display Contrast Control Knob Toner Bottle Toner Bottle Holder Lock Release Lever PC Unit Fusing Unit Duplex Unit G-12
1 CROSS-SECTIONAL VIEW 1 2 3 5 4 6 7 9 10 11 12 14 13 15 16 21 17 D 19 27 28 36 8 18 29 35 34 A 25 30 E 32 33 31 26 24 23 22 20 B C 37 44 F I J 45 46 K L 47 48 M N 49 38 39 G 40 42 H 41 43 1075M096AA M-1
1. Optical Section Cooling Fan Motor M17 2. 3rd Mirror 3. 2nd Mirror 4. 1st Mirror 5. Exposure Lamp LA1 6. Fusing Unit Ventilation Fan Motor M8 7. Lens 8. Pre-Cleaning Erase Lamp LA5 9. Cleaning Blade 10. Main Erase Lamp LA2 11. PC Drum Charge Corona 12. 6th Mirror 13. 4th Mirror 14. Image Erase Lamp LA3 15. 5th Mirror 16. Toner Suction Fan Motor M20 17. Developing Unit 18. Manual Bypass Take-Up Roll 19. Transport Roller 20. Synchronizing Roller 21. Pre-Image Transfer Erase Lamp LA4 22.
2 COPY PROCESS 2. DRUM CHARGING 3. EXPOSURE 4. IMAGE ERASE 12. MAIN ERASE 11. CLEANING 1. PC DRUM 10. PRE-CLEANING ERASE 15. EXIT/DUPLEX SWITCHING 14. FUSING 16. TURNOVER 13. TRANSPORT 5. DEVELOPING 6. PRE-IMAGE TRANSFER ERASE 9. PAPER SEPARATION 17. DUPLEX UNIT 8. IMAGE TRANSFER 7. MULTI BYPASS TABLE 7. PAPER FEEDING 1. PC Drum The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor.
7. Paper Feeding Paper is fed from each drawer or Multi Bypass Table. (For more details, see p. M-95.) 8. Image Transfer The single-wire Image Transfer Corona Unit applies a DC negative corona emission to the underside of the paper, thereby attracting toner onto the surface of the paper. (For more details, see p. M-143.) 9. Paper Separation The single-wire Paper Separator Corona Unit applies an AC corona emission [AC + DC(+) bias voltage] to the underside of the paper to neutralize the paper.
3 DRIVE SYSTEM 7 C B 6 4 1 2 A G 9 D 3 5 11 12 13 8 15 10 E F 14 M-5 16
A = Fusing Motor M6: Drives the Fusing Unit, Paper Exit Roller, and Suction Belts. 1. Paper Exit Roller drive pulley 2. Fusing Unit drive gear 3. Suction Belt drive gear B = PC Drum Drive Motor M5: Drives the PC Drum, Developing Unit, and Toner Conveying Screw. 4. Toner Conveying Screw drive gear 5. PC Drum drive coupling pawl A 6. Developing Unit drive coupling gear 2 C = Scanner Motor M11: Drives the Scanner and 2nd/3rd Mirrors Carriage. 7.
4 SEQUENTIAL EXPLANATION A The power cord is plugged into the outlet. ON ON ON DC Power Supply 1 PU2 outputs DC24V for dehumidifiers. * Only when Drum Drum Dry Heater H4, Lower Paper Dehumidifying Heater H5, and Upper Dehumidifying Switch S9 and Paper Paper Dehumidifying Heater H7 Developing Unit Dehumidifying Heater Dehumidifying Switch S10 are ON. H6 B Power Switch S1 is turned ON. OFF H4, H5, H7, H6 ON PU2 outputs DC24V and DC5V. ON DC Power Supply Board PWB-C outputs DC24V.
➀ * Timing depends on the surface temperature of the After 85 sec. or 40 sec. or 5 sec. OFF M6 ON Fusing Unit Upper Fusing Roller and the difference in surface temperature between the Upper and Lower Fusing Rollers when S1 is turned ON. (For details, see p. M-175.) Ventilation Fan Motor M8 = The following sequence is when making a single copy in full size on A4 crosswise fed from the 1st Drawer. = C The Start Key is pressed.
D PWB-A outputs a LOW SCAN signal to Scanner Control Processor Board PWB-J. The Scanner starts a scan motion. A LOW Image Leading Edge signal is input to PWB-A. ON LA3 OFF Approx. 65 msec. LA3 ... Leading edge erase E PWB-J outputs a LOW TRON signal to PWB-A. ON M3/M4 Approx. 120 msec. ON Separator Finger Solenoid SL6 Approx. 280 msec. OFF SL6 F PWB-J outputs a LOW SCEND signal to PWB-A. Approx. 200 msec., the SCEND signal goes HIGH. SCAN signal: H ...
G The trailing edge of the paper moves past Transport Roller Sensor PC26 (unblocked: H ). Approx. 144 msec. H M3 The trailing edge of the paper moves past Paper Leading Edge Sensor PC27 (unblocked: H ). Approx. 90 msec. I OFF OFF Synchronizing Motor M4 The trailing edge of the paper moves past Paper Exit Sensor PC36 (unblocked: H ). Approx. 600 msec. Approx. 4,600 msec. OFF OFF M6 M17/M19/M20/M29 M18 turns at half speed.
5 WATCHDOG (CPU OVERRUN MONITOR) FUNCTION 5-1. Overview The watchdog function monitors whether any of the CPUs mounted in the copier overrun. If this function detects that a CPU overruns, the copier automatically resets the CPU, thereby restarting the logic circuit and mechanism.
5-3. Watchdog Function Post-Processing The following processing is performed if a faulty condition is detected in the CPU. The Watchdog Counter available from the Tech. Rep. mode allows the Technical Representative to check if any faulty condition has occurred in the CPU. For details, see SWITCHES ON PWBs. Faulty CPU Processing (in Standby) Processing (during Copy Cycle) Copier 1 : The CPU is automatically reset (i.e.
Faulty CPU Other than above Processing (in Standby) 1 : When the CPU malfunctions, the communication to MSC Board PWB-B of the copier is cut off or faulty data is transmitted to the PWB-B. 2 : PWB-B detects that the CPU malfunctions. 3 : As commanded by the PWB-B, Option Relays RY3C and 4C are turned OFF and ON to restart the option. 4 : The communication line from the CPU to PWB-B is recovered. 5 : PWB-B detects that the CPU has recovered from the faulty condition.
6 MALFUNCTION BYPASS FUNCTION 6-1. Overview of the Malfunction Bypass Function • When a malfunction occurs in the copier, the malfunction bypass function permits the copier to continue operating if that malfunction is any of the predefined candidates for isolated malfunctions and if it will not affect the current copying operations. • If a copying function involving the isolated malfunction is selected, the message "Selected mode can’t be used.
6-2. Candidates for Isolated Malfunctions ● Copier-Related Item 1 1st Drawer Malfunction Code C0920/C0924 *1. C0921~23/C0926 2 2nd Drawer C0910/C0914 *2.
7 IMAGE STABILIZATION SYSTEM 7-1. Overview of the Image Stabilization System ◆ The following image stabilization controls are provided to ensure stabilized copy image. Item Initial Setting Quality Image density, gradation Purpose To make an initial adjustment of the toner-to-carrier ratio (T/C) control level and optimum Exposure Lamp voltage using the F5 operation. Image density To compensate for any drop in image density due to a deteriorating PC Drum.
Item Quality Purpose Control One-Shot Correction Image (When the density, Power gradation Switch is turned ON) To compensate for any drop in surface potential of the PC Drum when the Power Switch is turned ON in the morning. • After making the AIDC Sensor contamination correction, the copier produces a halftone pattern and, through AIDC Sensor control, corrects the optimum Exposure Lamp voltage.
7-2. AIDC Sensor To provide image stabilization control, this copier has AIDC Sensor UN9 fitted to the Cleaning Unit of the PC Unit. The sensor is used to detect the toner density and background level on the PC Drum. Theory of Operation 1. The UN9’s LED projects approx. 940-nm infrared light onto the surface of the PC Drum. 2. The UN9’s phototransistor detects the amount of light reflected back. 3. The phototransistor outputs a voltage corresponding to the intensity of the light reflected back.
7-3. AIDC Sensor Control ◆ There are five processes performed as the AIDC Sensor control: ➀ AIDC Sensor variation adjustment ➁ AIDC Sensor contamination correction ➂ T/C control level setting (correction) ➃ Optimum Exposure Lamp voltage setting (correction) ➄ AE Sensor gain adjustment ◆ Control of Each Process ➀ AIDC Sensor Variation Adjustment This adjustment corrects part-to-part variations in the AIDC Sensor (installation, sensitivity, deterioration, etc.).
1075C50MAA M-20
➂ T/C Control Level Setting (Correction) The copier produces a solid-black pattern on the PC Drum and the AIDC Sensor reads the image density (ID) of the pattern. If the ID reading is found to fall outside the specified range, the copier increases or decreases the T/C control level by 0.5%. Control The intensity of the AIDC Sensor LED light is set to a level three times as strong as the normal one and grid voltage (V G) is output at a level 45V lower than usual.
(2) A correction is made when the second or subsequent F5 test operation is run after the Exposure Lamp has been cleaned or "Exp. Lamp Manual Adj." setting of Tech. Rep. Choice changed. [The correction should be in the range between +2 and −4V with respect to the optimum Exposure Lamp voltage set in (1).] Control The Exposure Lamp voltage (VL) is set at a value set in (1) minus 4V.
➄ AE Sensor Gain Adjustment The output from the AE Sensor which detects the original image density in the Auto Exposure mode varies depending on the intensity of the LA1 light. The AE Sensor gain is therefore adjusted in proportion to the setting (or correction) of the optimum Exposure Lamp voltage. The AE Sensor gain can be varied by the pulse signal (pulse width) output from pin 9 of IC1A on Master Board PWB-A. The following two different types of controls are provided.
◆ Control Processing Timing ➀ AIDC Sensor variation adjustment ➁ AIDC Sensor contamination correction ➂ T/C control level setting (correction) ➃ Optimum Exposure Lamp voltage setting (correction) ➄ AE Sensor gain adjustment O: Performed Item Initial Setting ➀ ➁ ➂ ➃ ➄ At the initial setup, or when the first F5 operation is run after the PC Drum has been replaced. O O O O O The second or subsequent F5 operation is run when "Exp. Lamp Manual Adj." setting of the Tech. Rep.
8 PC DRUM 8-1. PC Drum • The photoconductor used in this copier is the organic photoconductor (OPC) type. • The drum is made up of two distinct, semiconductive materials on an aluminum alloy base. The outer of the two layers is called the Charge Transport Layer (CTL), while the inner layer is called the Charge Generating Layer (CGL). • The PC Drum measures φ100 mm × 350 mm.
M5 is energized and deenergized by the output from pin 52 of IC5A on Master Board PWB-A. = M5 Energization Timing = M5 is energized at different timings depending on which drawer the paper is fed from. Timer value T1, which is the period between the press of the Start Key and the energization of M5, varies with the paper source as listed below. This ensures that the PC Drum turns for a given period of time for each copy cycle regardless of the paper source.
8-3. Grounding of the PC Drum The PC Drum ground point is inside the rear end. When the PC Unit is slid into the copier, the Drum Holding Shaft contacts the ground point. This provides for assured grounding of the PC Drum through the Ground Plate in the rear to the frame of the copier. Conductive Grease Drum Holding Shaft Ground Point Ground Plate Drive Gear Coupling Gear 8-4. Drum Dry Heater • Drum Dry Heater H4 is located beside the Image Transfer/Paper Separator Coronas.
9 DRUM CHARGING 9-1. PC Drum Charge Corona • The PC Drum Charge Corona of this copier is provided with two corona wires and Scorotron grids, depositing a DC negative charge evenly across the entire surface of the PC Drum. • When PC Drum Charge HV HV1 turns ON, a voltage of approx. DC-6kV flows through the two wires and a corona emission begins. A grid voltage (VG) is applied to the two grid meshes, thereby ensuring that the charge level is maintained evenly across the entire surface of the PC Drum.
HV1 turns ON and DC negative corona emissions begin from the two corona wires. A grid voltage according to the Grid Control pulse is applied to the two grid meshes.
9-2. Control of the PC Drum Charge Corona The PC Drum Charge Corona is turned ON and OFF by the output signal from pin 76 of IC5A on Master Board PWB-A. The PC Drum Charge Corona/Grid voltage output from PC Drum Charge HV HV1 is turned ON approx. 400 msec. after PC Drum Drive Motor M5 has been energized (see p. M-26). The PC Drum Charge Corona/Grid voltage output from HV1 is turned OFF approx. 280 msec. after Scanner Control Processor Board PWB-J has output a SCEND signal.
9-3. PC Drum Charge Corona Wires Cleaning Mechanism/Control The PC Drum Charge Corona is provided with a mechanism that automatically cleans its two corona wires. It effectively removes from the wires any toner and dust particles which would otherwise cause uneven charging, white streaks on copies, and charge leak. • When PC Drum Charge Wire Cleaning Motor M21 is energized, its drive is transmitted to the Screw Shaft. This in turn moves the Cleaner mounted on the Screw Shaft.
• The PC Drum Charge corona wires are automatically cleaned under the following conditions. The cleaning function is, however, disabled if the "Charge Wire Cleaning" function of "System Input" available from the Tech. Rep. mode has been set to "Off". (1) A period of 200 msec. has elapsed after Power Switch S1 has been turned ON.
9-4. Ozone Filter • Ozone produced by the PC Drum Charge Corona is absorbed by the Ozone Filter as the air is drawn out of the copier by Ventilation Fan Motor M19. • This Ozone Filter is also used to absorb ozone produced by the Image Transfer/Paper Separator Coronas from the air drawn out of the copier by M19. • M19 is energized and deenergized by the output from pin 49 of IC5A on PWB-A.
10 OPTICAL SECTION • As the Scanner is moved by Scanner Motor M11, the light from Exposure Lamp LA1 is reflected off the original and guided through the six mirrors onto the surface of the PC Drum to form the electrostatic latent image. 10-1.
Part Name Symbol PC1 Function 1 Scanner Reference Position Sensor Provides the reference position for Scanner movement. 2 Scanner Drive Cable (Rear) 3 Scanner Control Processor Board PWB-J Mainly controls M11. 4 Exposure Lamp Regulator PU5 Applies an appropriate voltage to Exposure Lamp LA1. 5 Scanner Motor M11 Drives the Scanner and 2nd/3rd Mirrors Carriage by way of the Scanner Drive Cables.
10-2. Function of Exposure Components Book 2 Original Glass 1 3 6 5 4 1st Mirror 1. Auxiliary Reflector : Reflects light onto the areas that Exposure Lamp LA1 cannot illuminate when an original does not lie flat on the Original Glass (such as a book). It functions to reduce shadows which would otherwise be transferred to the copy. 2. Aperture Plates: : Regulate the amount of LA1 light illuminating the original surface. (There are four plates.) 3.
10-3. Exposure Lamp LA1 Control • The voltage applied to Exposure Lamp LA1 is controlled by changing the duty ratio of the pulse width of the Exposure Lamp Control signal (AVRPWM*) output from Master Board PWB-A. * AVR is an acronym for Auto Voltage Regulator. PWM is an acronym for Pulse Width Modulation.
(2) Auto Exposure Control • The copier is provided with the Auto Exposure mode in which the voltage applied to LA1 is automatically increased or decreased as necessary so that copies of consistent quality are produced regardless of whether, for example, the original has a dark background or is a pencil line drawing.
With the copier set into the Auto Exposure mode (the Touch Panel showing "Auto Expo."), press the Start Key. Then, LA1 is turned ON at the central manual exposure level (EXP5) and the Scanner leaves its home position (PC1 blocked) to travel up to the leading edge position of the original [where the Image Leading Edge signal (BASE) goes from HIGH to LOW]. This starts the automatic exposure control.
(3) Manual Exposure Control • When either one of the Exposure Control Keys (Lighter or Darker) on the Touch Panel is touched, it sets the copier into the Manual Exposure mode. In this mode, the copier permits the user to vary the Lamp voltage (i.e., the exposure level) in nine different steps. Touch the Exposure Control Key as necessary. Control by Master Board PWB-A The exposure level data is sent from the control panel to PWB-A via MSC Board PWB-B.
1075C26MAA M-41
10-4. Intensity Correction (1) Because of the nature of the Lens, the intensity of the LA1 light after passing through the Lens tends to be higher at the center and lower toward both ends. To solve this problem, there is a Lens Aperture Cover installed at the back of the Lens. It limits the amount of light at the center to ensure that an even amount of light strikes the surface of the PC Drum.
10-5. Scanner and Mirrors Carriages Moving Mechanism • The Scanner projects an even amount of light from Exposure Lamp LA1, as it moves, onto the entire surface of the original and reflects this light, with the 1st Mirror, onto the 2nd and 3rd Mirrors. • It is driven by Scanner Motor M11 with the Scanner Drive Cables attached to the front and rear at a speed appropriate to the set zoom ratio. The speed is varied from the reference speed of 340.0 mm/sec.
<4th/5th Mirrors Carriage> • The 4th and 5th Mirrors are mounted to their holder at right angles to each other. They function to let the light reflected from the 3rd Mirror and through Lens strike the 6th Mirror via themselves. • The 4th/5th Mirrors Carriage is moved in the X-direction (feeding direction) to correct the conjugation distance (the distance between the original and the surface of the PC Drum) according to the set zoom ratio.
10-6. Scanner Motor M11 Control • A DC servomotor is used for Scanner Motor M11. The pulse width modulation, or PWM, control is employed in which the average voltage is controlled by varying the width of the Scanner drive pulse which is the voltage input to M11. • M11 has a built-in photosensor and pulse disk. Their function is to convert the Motor shaft speed into a corresponding series of pulses. This pulse signal is input to Scanner Control Processor Board PWB-J.
• The speed of M11 is controlled by varying the width of the Scanner drive pulse output from Scanner Control Processor Board PWB-J. (This means that the current flowing through M11 is varied.
10-7. Lens Drive Mechanism/Control (1) Lens Drive Mechanism • In this copier, registration for the original is to one side, while the copy paper is fed through the center of the copier. For this reason, the Lens must be moved according to the paper size even in the full size mode (×1.000). The Lens is moved independently in the X-direction (feeding direction) and Y-direction (crosswise direction).
◆ Lens X Direction Reference Position Return From the enlargement side ( H ➡ L ) ➀ M12 is energized to move the Lens toward the reduction side and deenergized when Lens X Direction Reference Position Sensor PC2 goes from HIGH (unblocked) to LOW (blocked). This is the reference position. From the reduction side ( L ➡ H ) ➀ M12 is energized to move the Lens toward the enlargement side. From ➁ the point at which PC2 goes from LOW (blocked) to HIGH (unblocked), the Lens is further moved two steps (approx.
(3) Y (Crosswise) Direction Lens Motion Mechanism/Control The Lens must be moved in the Y-direction, since the original is always aligned with the rear side for registration regardless of the paper size (crosswise length) and zoom ratio. • The Lens is moved in the Y (crosswise) direction by a rack and pinion gear driven by Lens Y Direction Drive Motor M13. (M13 is a stepping motor and turned forward or backward by the pulse signal output from Scanner Control Processor Board PWB-J.
◆ Lens Y Direction Reference Position Return The movement of the Lens in the Y (crosswise) direction should be referred to as that in the plus (+) or minus (−) direction, instead of in the enlargement or reduction direction, since the Lens also needs to be moved in the Y direction according to the paper size (width).
1075C60MAA M-51
(4) Lens Movements in the X/Y-Direction ◆ When Power Switch is turned ON (1) The Scanner is returned to the home position, if it is not there. It is at the home position when Scanner Reference Position Sensor PC1 is blocked. (2) The Lens is returned to the reference position in the Y-direction. Lens Y Direction Reference Position Sensor PC3 ... L ➡ H (3) The Lens is returned to the reference position in the X-direction. Lens X Direction Reference Position Sensor PC2 ...
10-8. Optical Section Cooling Fan Motor • Optical Section Cooling Fan Motor M17 draws air from the outside into the inside of the copier to cool the areas around the optical section (especially the Original Glass) which is heated by a lit Exposure Lamp LA1.
11 ORIGINAL SIZE DETECTING SYSTEM • The conventional original size detecting system, which uses the intensity of the light reflected off the original as the basis for detection, is not 100% capable of detecting originals with high image density. The new system, on the other hand, determines the distance between the sensor and the original and is less affected by the color, reflectivity, paper quality, and other factors of the original.
Name Symbol 1 Size Reset Switch S7 Function Clears the preceding original size data. 2 Original Size Detecting Sensor CD2 (option) UN7 Detects the size of the original in the crosswise direction (i.e., width). Enables the detection of an inch size original. 3 Original Size Detecting Sensor CD1 UN6 Detects the size of the original in the crosswise direction (i.e., width).
11-3. Original Detection Method • When the photo receiver receives the reflected light of the two LEDs at an intensity that exceeds a predetermined level, the detection system determines that an original is placed within the setting distance of the sensor.
Each sensor has a built-in signal processing circuit that outputs 8-bit serial data to Original Size Detecting Board UN2.
11-4. Sensor Locations • The number and location of the Original Size Detecting Sensors varies depending on the marketing area, as given below. ●: Optional O: Standard CD1 (UN6) O O O Sensors Areas Metric Areas Inch Areas (Hong Kong Area) CD2 (UN7) ● ● O FD1 (UN5) O ● O FD2 (UN4) O O O FD3 (UN3) ● ● O NOTE: If the optional sensors are installed, set Jumper Connector J2 on UN2 as illustrated below, connect CN3 and CN4 on UN2, and run the F7 operation.
11-5. Original Size Detection • Original Size Detecting Board UN2 reads the output data provided by the original size detecting sensors. By comparing the data from each sensor with the threshold level, it determines whether there is an original placed on the Original Glass. UN2 then determines the size of the original according to the combination of the comparison results.
11-6. Original Size Detection Processing The copier performs different processing for the detection of the original size under different copier conditions as follows. Copier Condition Original Size Detection Processing The Original Cover is left LEDs of Original Size Detecting Sensors UN3 to UN7 open.
11-7.
12 IMAGE ERASE LAMP 12-1. Image Erase Lamp LA3 • Any areas of charge which are not to be developed along the leading, trailing, front, and rear edges are neutralized by lighting up Image Erase Lamp LA3. This effectively prevents non-image areas from being dirtied and economizes on toner consumption. The lamp also functions to erase the leading and trailing edges, and the areas defined in the File Margin and Edge/Frame Erase mode, of the electrostatic latent image on the surface of the PC Drum.
12-2. Image Erase Lamp LA3 ON/OFF Control LA3 is controlled by the following signals output from Master Board PWB-A. Signal Name Signal Output Pin DATA IC1A-5 64-bit serial data signal controlling turning ON and OFF each of the 64 LEDs of LA3. CLK IC1A-3 Synchronizing signal to transmit data serially. MODE IC1A-4 Signal causing LA3 to latch the transmitted data. STROBE IC1A-2 Signal to turn ON LA3 according to the latched data.
12-3. Control for Each Erase Function All LA3 LEDs are turned ON approx. 250 msec. after PC Drum Drive Motor M5 has been energized (see p. M-26) and the leading edge erase and edge erase controls are thereafter provided. The LA3 LEDs are turned OFF approx. 1,050 msec. after Scanner Control Processor Board PWB-J has output an SCEND signal, which completes a series of erase controls.
= Edge Erase = • The 64 LEDs are turned ON and OFF as necessary to erase unnecessary charges along both the front and rear edges of the image as well as those deposited in a reduction mode. This economizes on toner consumption and prevents black streaks from occurring on the copy. • Which LEDs are turned ON for edge erase depends on the copy paper size and zoom ratio setting.
• In this copier, the original is aligned with a corner for registration, while the copy paper is fed through the center of the copier. Because of that, the reference position of the image on the surface of the PC Drum varies according to the copy paper size. This defies a single LED ON pattern for the reduction mode, as was used conventionally. (Different LEDs are turned ON in the reduction mode according to the copy paper size.
LED ON Pattern B O: ON; X: OFF (L1 to L32 are OFF) Zoom Ratio LEDs Inch Area Metric Area L33 to L40 L41 to L48 L49 to L56 L57 to L64 To 0.507 To 0.511 OOOOOOOO OOOOOOOO OOOOOOOO OOOOOOOO 0.508 to 0.523 0.512 to 0.527 XOOOOOOO OOOOOOOO OOOOOOOO OOOOOOOO 0.524 to 0.539 0.528 to 0.543 XXOOOOOO OOOOOOOO OOOOOOOO OOOOOOOO 0.540 to 0.555 0.544 to 0.559 XXXOOOOO OOOOOOOO OOOOOOOO OOOOOOOO 0.556 to 0.572 0.560 to 0.576 XXXXOOOO OOOOOOOO OOOOOOOO OOOOOOOO 0.573 to 0.588 0.577 to 0.
= Trailing Edge Erase = • The image along the trailing edge of the electrostatic latent image on the surface of the PC Drum is erased by turning ON all LA3 LEDs. This prevents the Fusing Rollers from being dirtied by excess toner and offset from occurring as the trailing edge of the paper is fused. • The timing at which the trailing edge erase is switched from edge erase varies depending on the mode (File Margin, Edge/Frame Erase) and whether "Trailing Edge Erase" of the Tech. Rep.
13 DEVELOPING UNIT 13-1. Construction • This copier employs the New Micro-Toning developing system equipped with three Sleeve/Magnet Rollers. • The toner fed up to the Toner Replenishing Sleeve/Magnet Roller is supplied to the turning 1st and 2nd Sleeve/Magnet Rollers. From there, it is supplied to the electrostatic latent image on the surface of the PC Drum to form a visible, developed toner image of the original. • Toner is supplied from the Toner Bottle by way of the Main Hopper and Sub Hopper.
13-2. Developing Unit Drive Mechanism • Drive for the Developing Unit comes from PC Drum Drive Motor M5. • Coupling Gear 2 is spring-loaded. If the protruding part of Coupling Gear 1 makes contact with that of Coupling Gear 2 when the PC Unit is slid into the copier, spring-loaded Coupling Gear 2 is pushed back toward the rear of the copier allowing the PC Unit to be slid into position.
13-3. Developer Flow When drive from PC Drum Drive Motor M5 is transmitted, the Developer Conveying/Agitating Screw, Bucket Roller, and Toner Replenishing, 1st, and 2nd Sleeve/Magnet Rollers start turning. As a result, the developer and toner flow along a figure-8-shaped path as indicated by the arrows below, thus mixing and agitating toner and carrier efficiently.
From the Sub Hopper, an even amount of toner is supplied over the full length of the Bucket Roller by the Sub Hopper Toner Replenishing Roller. (For details, see 13-7. Sub Hopper Toner Replenishing Mechanism.) The toner is then mixed together with the developer inside the Bucket Roller and conveyed to both ends of the Bucket Roller. From the two ends, it is fed to the Developer Conveying/Agitating Screw which further agitates the developer.
13-4. Magnetic Pole Positioning • Each Magnet Roller of the Toner Replenishing, 1st, and 2nd Sleeve/Magnet Rollers is made up of five magnets asymmetrically packed. • The Bias Plate at the front of the Developing Unit ensures that the angle of principal magnetic pole N1 of the 1st Sleeve/Magnet Roller and that of principal magnetic pole S1 of the 2nd Sleeve/Magnet Roller will not be changed with respect to the center of the PC Drum.
N3, S2 : The developer fed by the Bucket Roller is attracted onto the surface of the Sleeve Roller. N2 : The developer brush is formed by this pole. The height of the brush is moderate before the brush is regulated by the Doctor Blade. S1 : This pole functions to hold the developer brush firmly onto the surface of the Sleeve Roller as it is fed onto the point of supply to the 1st Sleeve/Magnet Roller.
13-5. ATDC Sensor • ATDC Sensor UN8 is installed at the center of the Developer Conveying/Agitating Screw on the underside of the Developer Mixing Chamber, over which all developer flows as it moves along a figure-8-shaped path. • It detects the varying toner-to-carrier ratio (T/C) of the developer, which is circulated through the chamber, as changes in the magnetic flux density.
Once the ATDC Sensor automatic adjustment is completed, varying T/C’s may be compared with the UN8 output voltages as follows. T/C UN8 Output Voltage T/C UN8 Output Voltage 3.0% 3.17 V 6.0% 2.16 V 3.5% 3.00 V 6.5% 2.00 V 4.0% 2.84 V 7.0% 1.83 V 4.5% 2.67 V 7.5% 1.66 V 5.0% 2.50 V 8.0% 1.49 V 5.5% 2.33 V The T/C control level is set by AIDC Sensor control with reference to the initial 5% at setting-up. (For details, see p. M-21.
• UN8 samples T/C at the following timings for each copy. Approx. 20 msec. after a HIGH BASE signal, which is output from pin 2 of IC2J on PWB-J for each scan motion, has been input to pin 96 of IC5A on PWB-A, the ATDC Sensor takes readings at about 5-msec. intervals for about 280 msec. (i.e., taking about 56 readings). BASE Signal Approx. 20 msec. Approx. 5 msec. Approx. 280 msec. ATDC Sensor Sampling T1 msec.
13-6. Control for Abnormally Low T/C Any of the following faulty conditions occurring during a copy cycle could cause a steep drop in T/C, resulting in image trouble and carrier scattering. When ATDC Sensor UN8 detects an abnormally low T/C due to any of these reasons during a copy cycle, the self recovery function of the copier interrupts the current copy cycle to replenish the supply of toner temporarily.
= Toner Replenishing Sequence Performed When an Abnormally Low T/C is Detected = The ATDC Sensor output voltage applied to pin 80 of IC1A indicates an abnormally low T/C (T/C is lower than the setting by 2% or more). (The copier determines that the T/C is abnormally low.) After the copy cycle has been completed for the paper which had been taken up and fed in, the next paper take-up sequence is interrupted and, instead, Sub Hopper Toner Replenishing Motor M15 is energized.
13-7. Sub Hopper Toner Replenishing Mechanism/Control • Toner is replenished from the Sub Hopper when Sub Hopper Toner Replenishing Motor M9 at the front of the PC Unit is energized to turn the Sub Hopper Toner Replenishing Roller. • The Sub Hopper Toner Replenishing Roller is made of polyurethane foam. It supplies toner along the full length of the roller in a powder form to the Developer Mixing Chamber. (The powdered toner makes for improved triboelectric charge efficiency.
PC Drum Drive Motor M5 is energized. Toner supplied from the Main Hopper is conveyed by the Sub Hopper Toner Conveying Screw and fed at the center of the screw to the Sub Hopper (Sub Hopper Toner Agitating Lever). The Sub Hopper Toner Agitating Lever evens out the toner towards the front and rear, while agitating it. Toner is then fed under the Toner Regulator onto the Sub Hopper Toner Replenishing Roller. Sub Hopper Toner Replenishing Motor M15 is energized.
13-8. Sub Hopper Toner Empty Detecting Mechanism/Control • A toner-empty condition in the Sub Hopper is detected by the magnet that turns at the same time as the Sub Hopper Toner Agitating Lever to actuate and deactuate Sub Hopper Toner Empty Switch S8. • While the amount of toner in the Sub Hopper is more than the predetermined one, the magnet is pushed upwards by the toner as it first meets the toner during its downward swing.
= Detection Control = • A toner-empty condition of the Sub Hopper is detected by the output from Sub Hopper Toner Empty Switch S8 while the Developing Unit remains energized (PC Drum Drive Motor M5 remains energized). S8 is actuated. Master Board PWB-A A LOW Sub Hopper Toner Empty signal is input to pin 99 of IC4A. Main Hopper Toner Replenishing Motor M14 is energized to turn the Toner Bottle one turn, thereby supplying toner from the Main Hopper. (See p. M-85.
= Control After Detection of Toner-Empty Condition = Open the Upper Front Door, change the Toner Bottle, and close the Upper Front Door. Master Board PWB-A Main Hopper Toner Replenishing Motor M14 is energized to continuously turn the Toner Bottle, thereby supplying toner from the Main Hopper to Sub Hopper. M14 is deenergized to stop the Toner Bottle when the signal from Sub Hopper Toner Empty Switch S8 remains HIGH for a continuous 2-sec. period. The toner-empty message on the Touch Panel is turned OFF.
13-9. Main Hopper Toner Replenishing Mechanism/Control When a toner-empty condition is detected in the Sub Hopper, Main Hopper Toner Replenishing Motor M14 is energized to turn the Toner Bottle, thereby supplying toner from the Main Hopper to Sub Hopper. = Toner Replenishing to Sub Hopper = Main Hopper Toner Replenishing Motor M14 is energized. The coupling is turned by a gear train.
= Coupling Locking Mechanism = The coupling is locked in position to prevent it from moving when the Toner Bottle is removed or installed. When the Toner Bottle Holder is swung out to the front, the tension of the spring causes the Coupling Lock Lever to hook the coupling. When the holder is swung into position, the bottom of the Coupling Lock Lever is pushed by the protrusion of the holder, disengaging the Coupling Lock Lever from the coupling.
• Main Hopper Toner Replenishing Motor M14 is energized and deenergized by the output from pin 69 of IC4A on Master Board PWB-A. • M14 is energized when a toner-empty condition is detected in the Sub Hopper (see p. M-83). It is deenergized when Toner Bottle Home Position Sensor PC30 is blocked, at which time the Toner Supply Port of the Toner Bottle is located on the top.
13-10. Auxiliary Toner Replenishing (User Mode Function) • The copier is set into the Auxiliary Toner Replenishing mode when the User Mode Key on the control panel is pressed and then Toner Replenisher selected on the Touch Panel. It drives the Sub Hopper to let it feed toner into the Developing Unit, thereby increasing the toner-to-carrier ratio of the developer.
= Timing Chart = PC Drum Drive Motor (M5) ON : Developer Mixing OFF 2 sec. 30 sec. ATDC Detection T T 2 sec. Sub Hopper Toner Replenishing Motor (M15) 1 sec. T T T : 280 msec. 1075T187CA PC Drum Drive Motor (M5) ON : Developer Mixing 2 sec. 975 msec. 280 msec.
13-11. Developing Bias • A negative voltage (VB = developing bias voltage) is applied to the 1st and 2nd Sleeve/Magnet Rollers to prevent a foggy background on the copy. The amount of toner attracted onto the surface of the PC Drum depends on how much lower the PC Drum surface potential (V I) is than VB after exposure. • A developing bias voltage of DC-270V is applied to the two Sleeve/Magnet Rollers by PC Drum Charge HV HV1.
13-12. Developing Unit Dehumidifying Heater • Variations in the environmental conditions (temperature and humidity) surrounding the copier could result in toner and carrier being insufficiently charged. Then, the amount of toner attracted onto the surface of the PC Drum decreases, making copy image density unstable.
13-13. Toner Suction Fan Motor • This copier is provided with a Suction Duct under the 2nd Sleeve/Magnet Roller. Toner particles from the Developing Unit are drawn in through the Suction Duct so that they will not fall over the Pre-Image Transfer Guide Plate and Image Transfer/Paper Separator Coronas Unit. • The toner particles are drawn through the Suction Duct and collected by the Air Filter as the air is drawn out of the copier by Toner Suction Fan Motor M20.
14 PRE-IMAGE TRANSFER ERASE LAMP 14-1. Pre-Image Transfer Erase Lamp • This copier is equipped with Pre-Image Transfer Erase Lamp LA4 whose light strikes the surface of the PC Drum after development to improve image transfer and paper separation. • A cold-cathode discharge tube is used for LA4. It emits light of short wavelength to the surface of the PC Drum. LA4 LA4 14-2.
1075C13MAA M-94
15 PAPER TAKE-UP/FEED SECTION 15-1. Construction 1 2 4 3 33 30 5 36 37 38 35 34 6 7 8 9 10 11 12 13 14 15 32 29 16 17 28 18 19 27 20 21 23 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22.
15-2. Drawer-in-Position Detection • When the 1st/2nd Drawer is slid into the copier, the light blocking plate in the rear of the drawer blocks 1st/2nd Drawer Set Sensor PC18/19 ( L ). The copier then knows that the drawer has been slid into position.
15-3. Paper Empty Detection (1) Metric Areas • A paper empty detection in the 1st and 2nd Drawers is detected by 1st Drawer Paper Empty Sensor PC22 and 2nd Drawer Paper Empty Sensor PC23, respectively. (2) Inch Areas • A paper empty detection in the 1st and 2nd Drawers is detected by 1st Drawer Paper Empty Sensor PC22 and 2nd Drawer Paper Empty Sensor PC23, and 1st Drawer Paper Empty Board PWB-E1 and 2nd Drawer Paper Empty Board PWB-E2, respectively.
1075C55MCA M-98
15-4. Paper Lifting/Lowering Mechanism/Control (1) Metric Areas • When the drawer is slid into the copier, the flat spring at the rear of the drawer raises the Lift-Up Motor Assy and, as a result, Gear A on the Paper Lifting Arm shaft meshes with the Lift-Up Motor Assy gear. • At this time, 1st/2nd Drawer Set Sensor PC18/19 is blocked ( L ) and, 1 sec. thereafter, 1st/2nd Drawer Lift-Up Motor M23/24 is energized.
During Copy Cycle Paper is consumed as copies are made. As the Paper Take-Up Roll lowers, 1st/2nd Drawer Lift-Up Sensor PC14/15 is unblocked ( H ). 1st/2nd Drawer Lift-Up Motor M23/24 is energized to raise the paper stack, thus blocking PC14/15 ( L ). M23/24 is deenergized. Note: Repeating these operations keeps constant the pressure between the Paper Take-Up Roll and paper regardless of the amount of paper still available for use.
(2) Inch Areas • When the drawer is slid into the copier and, if 1st/2nd Drawer Paper Empty Sensor PC22/23 and 1st/2nd Drawer Paper Empty Board PWB-E1/E2 are blocked ( L ), any of the following operations will energize 1st/2nd Drawer Lift-Up Motor M23/24 to turn forward, thus raising the paper stack. Press 1st/2nd Drawer Paper Descent Key UN10/11. Load originals on the Duplexing Document Feeder. Turn ON Power Switch S1. Place a paper stack on the Multi Bypass Table. Open and close a door.
During Copy Cycle Paper is consumed as copies are made. As the Paper Take-Up Roll lowers, 1st/2nd Drawer Lift-Up Sensor PC14/15 is unblocked ( H ). M23/24 is energized to raise the paper stack, thus blocking PC14/15 ( L ). M23/24 is deenergized. Note: Repeating these operations keeps constant the pressure between the Paper Take-Up Roll and paper regardless of the amount of paper still available for use.
15-5. Paper Stack Lowering/Drawer Locking Mechanism/Control (Inch Areas) • When the Paper Descent Key (UN10/11) is pressed or the drawer runs out of paper during a copy cycle, the Lift-Up Motor (M23/24) is energized to turn backward to lower the Paper Lifting Plate. • The Paper Lifting Plate is at its lower limit position when the segment gear mounted on the same shaft as the Paper Lifting Arm blocks 1st/2nd Drawer Lower Limit Position Sensor PC49/50 ( L ).
1075C58MCA M-104
15-6. Paper Level Detection • The amount of paper still available for use, or the paper level, of the 1st and 2nd Drawer is detected by 1st/2nd Drawer Lift-Up Motor Pulse Sensor PC56/57 and a pulse disk. • The pulse disk is mounted on the shaft of the intermediary gear that transmits drive from the Lift-Up Motor (M23/24). The speed of M23/24 is known by counting the number of pulses using PC56/57.
1075C59MCA M-106
15-7. 3rd-Drawer-in-Position Detection • When the 3rd Drawer is slid into the copier, the light blocking plate in the rear of the drawer blocks 3rd Drawer Set Sensor PC61 ( L ) and the copier determines that the 3rd Drawer has been slid into it.
15-8. 3rd Drawer Paper Empty Detection Main Tray • A paper-empty condition of the Main Tray is detected by 3rd Drawer Main Tray Paper Empty Board PWB-E and 3rd Drawer Paper Empty Sensor PC24. • PWB-E detects a paper-empty condition at a timing when the 3rd Drawer is slid into the copier (i.e., when the Main Tray is at its lower limit position). The copier notes a paper-empty condition if PWB-E is unblocked ( H ). • PC24 works when paper is taken up from the Main Tray (i.e.
1075C40MAA M-109
15-9. Main Tray Paper Stack Lifting/Lowering Mechanism/Control ◆ Main Tray Paper Stack Lifting/Lowering Mechanism • The Main Tray is raised and lowered by 3rd Drawer Elevator Motor M27. When M27 turns forward or backward, the wires at the front and rear are wound around, or fed off, the pulleys to raise or lower the Main Tray.
When Drawer is Slid in 3rd Drawer Lift-Up Sensor PC16 3rd Drawer Set Sensor PC61 is blocked ( L ). 1 sec. 3rd Drawer Paper Descent Key UN12 is pressed. (For inch areas) M27 is energized to raise the Main Tray. The paper stack causes the light blocking plate of the Paper Take-Up Roll Assy to block PC16 ( L ). 15 msec. M27 is deenergized. During Copy Cycle Paper is consumed as copies are made. 3rd Drawer Lift-Up Sensor PC16 The Paper Take-Up Roll gradually lowers, unblocking PC16 ( H ).
• The Main Tray is Lowered When: (1) 3rd Drawer Paper Empty Sensor PC24 is unblocked ( H ) during a paper take-up sequence. (2) 3rd Drawer Paper Descent Key UN12 is pressed. (3) Power Switch S1 is turned ON when the Main Tray is located at a position other than its upper and lower limits. ◆ Main Tray Stop Conditions • While the Main Tray is going up: (1) 3rd Drawer Lift-Up Sensor PC16 is blocked ( L ). (2) PC16 is blocked ( L ) during top level correction.
1075C41MAA M-113
15-10. 3rd Drawer Paper Level Detecting Mechanism • The amount of paper still available for use, or the paper level, of the Main Tray is detected using 3rd Drawer Elevator Motor Pulse Sensor PC44 and a pulse disk which detect the speed of 3rd Drawer Elevator Motor M27. • The pulse disk is mounted on the shaft of the intermediary gear that transmits drive from M27. The speed of M27 is known by counting the number of pulses using PC44.
15-11. Shifter Drive Mechanism/Control • The Shifter is driven by 3rd Drawer Shift Motor M28 via a belt. As M28 is energized, the Shifter transfers the paper stack on the Shift Tray to the Main Tray. • The Shifter is at its home position when 3rd Drawer Shifter Home Position Sensor PC47 is blocked ( L ). This is before the Shifter moves the paper stack to the Main Tray.
◆ 3rd Drawer Shift Motor M28 Control • M28, a DC motor, is energized to turn forward or backward and deenergized by the M28 Control signals fed from Master Board PWB-A and output through pins 33 and 34 of IC1F on Drawer S/P Board PWB-F.
◆ Timing Chart 3rd Drawer Paper Empty Sensor (PC24) H L 0.5 sec. Forward (Up) 3rd Drawer Elevator Stop Motor (M27) Backward (Down) 3rd Drawer Tray Lower Position Sensor (PC46) 0.5 sec. H L Forward (Transfer) 3rd Drawer Shift Stop Motor (M28) Backward (Return) 0.5 sec.
15-12. 3rd Drawer Lock/Release Lock • When the 3rd Drawer is slid into the copier, the locking pawl in the rear of the copier is hooked onto the locking shaft in the rear of the 3rd Drawer. Release Press 3rd Drawer Paper Descent Key UN12. The Main Tray starts lowering and blocks 3rd Drawer Tray Lower Position Sensor PC46 ( L ). 0.5 sec. 3rd Drawer Lock Solenoid SL8 is energized and remains so for 0.5 sec.
15-13. Paper Dehumidifying Heaters (Except Europe, U.S.A., and Canada) • When the paper in the drawer grows damp, its electrical resistance decreases, which degrades image transfer efficiency. As a result, void areas and other image problems occur on the copy. • Upper and Lower Paper Dehumidifying Heaters H7 and H5 are provided to prevent this problem.
15-14. Drawer Paper Take-Up Mechanism/Control • Drive for the paper take-up sequence is transmitted from Paper Take-Up Motor M1 when 1st/2nd/3rd Drawer Paper Take-Up Clutch CL1/2/3 is energized.
• The paper separating mechanism employs a torque limiter to ensure that only the top sheet of paper is fed in by separating the second sheet of paper from the top one. • This is accomplished by the difference in friction coefficient between the Feed and Separator Rolls. • When only one sheet of paper is taken up, the friction coefficient on the top side of the paper is equal to that on the underside.
(Except 3rd Drawer) • If the drawer is pulled out when a sheet of paper is pinched between the Feed and Separator Rolls, that sheet of paper is left inside the copier and it becomes difficult to remove it. • This copier is therefore provided with a mechanism that releases the Separator Roll from the Feed Roll when the drawer is slid out of the copier.
• Paper Take-Up Motor M1 is a DC motor and controlled by the M1 Remote signal output from pin 48 of IC5A on Master Board PWB-A.
• To minimize the occurrence of paper misfeed due to a slippery Paper Take-Up Roll, the Paper Take-Up Clutch (CL1/2/3) is kept deenergized for 500 msec. before it is energized again, if a sheet of paper fails to reach the Paper Take-Up Sensor (PC6/7/8) even after the lapse of 925 msec. after the clutch has first been energized. (This is called the paper take-up retry function.
• Even if the Paper Take-Up Roll takes up two sheets of paper at one time, the double feed control uses the second sheet of paper for the next copy cycle without causing a paper misfeed. It eliminates a paper misfeed that would otherwise result when two sheets of paper are taken up at once.
15-15. Vertical Transport Drive Mechanism • Each Vertical Transport Roller is driven by Vertical Transport Motor M2.
◆ Vertical Transport Drive Control • Vertical Transport Motor M2, a stepping motor, is controlled by the M2 Control signals fed from Master Board PWB-A and output through pins 50, 51, 52, and 53 of IC1F on Drawer S/P Board PWB-F. 1075C46MAA ◆ Timing Chart Transport Roller Sensor (PC26) TRON Paper Leading Edge Sensor (PC27) H L H L H L Vertical Transport ON Motor (M2) OFF Fusing Motor (M6) 50 msec. 50 msec. 50 msec. 114 msec.
15-16. Multi Bypass Table (1) Construction • The Multi Bypass Table consisting of the following parts is fitted to the Right Door of the copier. 1 2 4 3 Rear of Copier 5 6 7 10 8 Front of Copier 9 8 5 1. Manual Feed Paper Empty Sensor PC28 2. Manual Bypass Separator Roll 3. Manual Bypass Feed Roll 4. Manual Feed Paper Pick-Up Solenoid SL9 5. Manual Bypass Edge Guides 6. Manual Bypass Table 7. Manual Feed Size Detecting Resistor VR1 8. Paper Stopper 9. Manual Bypass Take-Up Roll 10.
(2) Manual Bypass Paper Take-Up Drive Mechanism • Drive for paper take-up from the Multi Bypass Table is transmitted from Transport Motor M3 via Manual Feed Paper Take-Up Clutch CL5 to the Manual Bypass Feed and Take-Up Rolls. • Here is the drive train.
(3) Manual Take-Up Roll Pressure Mechanism • The Manual Bypass Take-Up Roll is operated as follows when Manual Feed Paper Pick-Up Solenoid SL9 is energized and deenergized. • The two Paper Stoppers, which block the leading edge of the paper stack loaded on the Multi Bypass Table, are also operated as follows as SL9 is energized and deenergized. SL9 Take-Up Roll Position Paper Stoppers At take-up Deenergized Pressing paper Free At timings other than take-up Energized Retracted Locked (Ref.
(4) Manual Bypass Paper Separating Mechanism • The paper separating mechanism employs a torque limiter to ensure that only the top sheet of paper is fed in by separating the second sheet of paper from the top one. • This is accomplished by the difference in friction coefficient between the Manual Bypass Feed and Separator Rolls. • When only one sheet of paper is taken up, the friction coefficient on the top side of the paper is equal to that on the underside.
(5) Manual Bypass Paper Empty Detection • The Multi Bypass Table is equipped with Manual Feed Paper Empty Sensor PC28 which detects a sheet of paper on the Multi Bypass Table. Manual Feed Paper Empty Sensor PC28 Manual Bypass Take-Up Roll • When paper is placed on the Multi Bypass Table, PC28 is blocked ( L ) as follows. • When there is no paper on the Multi Bypass Table, PC28 is unblocked ( H ) as follows.
(6) Manual Bypass Paper Width Detection • In this copier, the original is aligned with the rear edge, while the paper is fed though the center of the copier. For this reason, it becomes necessary to detect the width of the paper placed on the Multi Bypass Table and move the Lens in the Y (crosswise) direction. • There is a sliding resistor installed whose resistance is varied as the Manual Bypass Edge Guides are moved.
• The VR1 output voltages are input to pin 75 of IC1A on Master Board PWB-A and the copier knows the paper width by the particular voltage. Paper Width A3, A4C B4 A4L, A5C A5L VR1 Output Voltage (V) Approx. 4.17 Approx. 3.45 Approx. 2.58 Approx. 1.49 Paper Width 11" × 17"L 8-1/2" × 11"L 5-1/2" × 11"L VR1 Output Voltage (V) Approx. 3.95 Approx. 2.74 Approx. 1.
(7) Manual Bypass Take-Up Control • Manual Feed Paper Pick-Up Solenoid SL9, which presses the Manual Bypass Take-Up Roll against and releases it from the paper stack on the Multi Bypass Table, is controlled by the SL9 ON signal output from pin 54 of IC5A and SL9 OFF signal output from pin 55 of IC5A on Master Board PWB-A. • Manual Feed Paper Take-Up Clutch CL5, which couples the drive from Transport Motor M3, is controlled by the CL5 Remote signal output from pin 50 of IC5A on PWB-A.
16 TRANSPORT/SYNCHRONIZING ROLLERS UNIT 16-1. Construction • The Transport/Synchronizing Rollers Unit can be removed as an assembly for easy serviceability. • Each of the Transport and Synchronizing Rollers is driven by a stepping motor dedicated to it so that the paper is properly fed by the Transport Rollers and a loop is positively formed in the paper before the Synchronizing Rollers.
16-2. Paper Dust Remover • The Upper Transport Roller and Upper Synchronizing Roller are each equipped with a Paper Dust Remover to prevent paper dust from sticking to the surface of the PC Drum. • Since these two rollers are covered with a vinyl tubing, triboelectric charging occurs as the rollers turn in contact with the Paper Dust Remover. • As paper is fed through the rollers, the charges on the tubing attract paper dust from the paper. The dust is then transferred onto the Paper Dust Remover.
16-4. Transport Roller Drive Control • The Transport Rollers are driven by Transport Motor M3. • M3, a stepping motor, is controlled by energizing the four internal coils using pulse signals output from pins 2, 6, 3, and 7 of IC4F on Drawer S/P Board PWB-F, as controlled by Master Board PWB-A. • The Transport Rollers are driven at the following timing.
16-5. Synchronizing Roller Drive Mechanism • The Upper Synchronizing Roller is driven by the Lower Synchronizing Roller. • The Lower Synchronizing Roller is driven by Synchronizing Motor M4 through a gear train.
16-6. Synchronizing Roller Drive Control • The Synchronizing Rollers are driven by Synchronizing Motor M4. • M4, a stepping motor, is controlled by energizing the four internal coils using pulse signals output from pins 2, 3, 6, and 7 of IC2T on Synchronizing Motor Control Board PWB-T, as controlled by Master Board PWB-A. • The Synchronizing Rollers are started in synchronism with the Registration signal (TRON). * The BASE signal is output when the Scanner reaches a given point in its scan motion.
1075C33MAA M-141
16-7. Prevention of Low Image Density on Copy During conditions of high humidity when the paper is damp, charges would tend to flow from the Image Transfer Corona through the paper and guide plates to the ground. This results in low image density on the copies. To prevent this from occurring, a plastic spacer is installed at the pivot of the Right Door and where the Transport/Synchronizing Rollers Unit is fitted.
17 IMAGE TRANSFER/PAPER SEPARATOR CORONAS 17-1. Image Transfer/Paper Separator Coronas • The Image Transfer Corona, employing the corotron system, applies a DC negative corona emission to the underside of the paper thereby attracting the positively charged toner onto the surface of the paper to form a visible, developed image of the original.
17-2. Image Transfer/Paper Separator Coronas Control Turning ON and OFF the Image Transfer/Paper Separator Coronas is controlled by the signal output from pins 74 and 83 of IC5A on Master Board PWB-A. Approx. 250 msec. after PC Drum Drive Motor M5 has been energized (p. M-26), the image transfer/paper separator corona output from Image Transfer/Paper Separator HV HV2 is turned ON. Approx. 770 msec.
17-3. Image Transfer/Paper Separator Corona Wires Cleaning Mechanism/Control The Image Transfer/Paper Separator Coronas are provided with a mechanism that automatically cleans its corona wires. It effectively removes from the wires any toner and dust particles which would otherwise cause uneven charging, white streaks on copies, and charge leak. • When Image Transfer/Paper Separator Charge Wire Cleaning Motor M22 is energized, its drive is transmitted to the Screw Shaft.
• The Image Transfer/Paper Separator corona wires are automatically cleaned under the following conditions. The cleaning function is, however, disabled if the "Charge Wire Cleaning" function of "System Input" available from the Tech. Rep. mode has been set to "Off". (1) A period of 200 msec. has elapsed after Power Switch S1 has been turned ON.
1075C15MAA M-147
17-4. Image Transfer/Paper Separator Coronas Assy Retracting Mechanism • The Image Transfer/Paper Separator Coronas Assy Holder is designed to retract downward to prevent the coronas assy from contacting the PC Drum when the PC Unit is slid out of the copier. • When the PC Unit is in the copier, shaft A fitted to the PC Unit Holder pushes the Coronas Lever rearward.
17-5. Ozone Filter • Ozone produced by the Image Transfer/Paper Separator Coronas is absorbed by the Ozone Filter from the air being drawn out of the copier by Ventilation Fan Motor M19. • In this copier, this Ozone Filter absorbs ozone produced by not only the Image Transfer/Paper Separator Coronas but also the PC Drum Charge Corona. (For the control of M19, see 9-4. Ozone Filter.
18 CLEANING UNIT 18-1. Construction of the Cleaning Unit • The Cleaning Blade is pressed tightly against the surface of the PC Drum and scrapes off any toner remaining on the surface after image transfer and paper separation have been completed. The scraped-off toner falls into the Toner Conveying Coil and is conveyed by that Coil to the Toner Chute into the Toner Collecting Bottle at the back of the copier.
18-2. Cleaning Blade Moving Mechanism • The Cleaning Blade is moved to the front and rear while the PC Drum is turning to ensure that all residual toner is scraped cleanly off the surface of the PC Drum, thereby preventing the PC Drum as well as Cleaning Blade from deteriorating. • Drive from PC Drum Drive Motor M5 turns the Lateral Movement Cam.
18-3. Toner Conveying/Collecting Mechanism • The toner which has been scraped off the surface of the PC Drum by the Cleaning Blade is conveyed to the rear of the copier by the Toner Conveying Coil and dropped into the Toner Collecting Bottle through the Toner Chute. • The Toner Conveying Coil is driven by PC Drum Drive Motor M5. (For the control of M5, see p. M-26.) • The Toner Collecting Bottle has a capacity of approx. 13 liters.
• There is a mechanism called the Pipe Shutter that prevents spent toner from spilling, provided at the Chute Port. • The Toner Conveying Pipe has an opening in the bottom at the rear end which is covered and uncovered by the Pipe Shutter as the PC Unit is slid out of, and into, the copier.
18-4. Pre-Cleaning Erase Lamp LA5 ON/OFF Control • Pre-Cleaning Erase Lamp LA5 is made up of 64 LEDs. • The ON/OFF timing of LA5 is in synchronism with that of Pre-Image Transfer Erase Lamp LA4. • LA5 is turned ON and OFF by the signal output from pin 89 of IC4A on Master Board PWB-A. LA5 turns ON approx. 450 msec. after PC Drum Drive Motor M5 has been energized (p. M-26). LA5 turns OFF approx. 890 msec.
18-5. PC Drum Paper Separator Fingers Moving Mechanism/Control • The PC Drum Paper Separator Fingers function, together with the Paper Separator Corona, to ensure good separation of paper from the PC Drum after image transfer has taken place. • The Paper Separator Fingers are made of metal with their tips ground to minimize damage to the surface of the PC Drum. • There are three Paper Separator Fingers provided to cope with any paper size.
= Finger Pressing Motion = • The PC Drum Paper Separator Fingers are pressed against the surface of the PC Drum by Separator Finger Solenoid SL6 as it is energized at a timing to separate paper from the surface of the PC Drum. • When SL6 is energized, part A of the Actuating Lever is raised. This moves the lower part of the lever in the direction of the arrow. Since the Finger Shaft is connected to the Actuating Lever at B, the Paper Separator Fingers are turned counterclockwise.
= Finger Back-and-Forth Motion = • The PC Drum Paper Separator Fingers are moved in the crosswise direction by the eccentric cam with ratchet when Separator Finger Solenoid SL6 is operated. • When SL6 is energized, the Actuating Lever is moved in the direction of arrow C. At this time, pawl D moves over the ratchet one tooth, which is a given amount of rotary motion of the eccentric cam.
Separator Finger Solenoid SL6 is energized and deenergized by the signal output from pin 88 of IC4A on Master Board PWB-A. SL6 is energized approx. 120 msec. after Scanner Control Processor Board PWB-J has output a TRON (registration) signal. SL6 is deenergized approx. 280 msec. after it has been energized.
18-6. Cleaning Bias (Option) • A Cleaning Bias Seal can be installed optionally. • It is installed according to the type of copy paper the user uses. • It must be installed if the user uses acid paper which contains a lot of talc. • A bias voltage of approx. DC+410V is applied to the Cleaning Bias Seal by Seal Bias HV3, thereby attracting talc from the surface of the PC Drum. Cleaning Bias Seal • The cleaning bias is turned ON and OFF by the signal output from pin 95 of IC4A on Master Board PWB-A.
19 MAIN ERASE LAMP 19-1. Main Erase Lamp • Main Erase Lamp LA2 neutralizes any surface potential remaining on the surface of the PC Drum after cleaning. • It consists of nine incandescent tungsten-filament lamps connected in a series inside a glass tube. Main Erase Lamp LA2 Main Erase Lamp LA2 1075M092AA 1075M093AA 19-2. Main Erase Lamp LA2 ON/OFF Control • LA2 is turned ON and OFF by the signal output from pin 93 of IC4A on Master Board PWB-A.
1075C19MAA M-161
20 TRANSPORT SECTION 20-1. Transport Section • Rotation of Suction Fan Motor M18 results in the paper separated from the PC Drum being drawn onto the turning Suction Belts. As a result, the paper is smoothly carried to the Fusing Unit. • The Suction Belts are turned by the Suction Belt Drive Roller which is driven by Fusing Motor M6. (For the timing at which M6 is energized and deenergized, see p. M-168.) • Four rubber belts are used as the Suction Belts.
20-2. Suction Fan Motor M18 Control Suction Fan Motor M18 turns at either half or full speed, selected by the signal output from pin 49 of IC5A on Master Board PWB-A. It is controlled at the following timings. • At the same time when Power Switch S1 is turned ON, M18 turns at half speed. • The speed of M18 rotation is switched from full to half approx. 4,600 msec. after the trailing edge of the last copy has moved past Paper Exit Sensor PC36.
21 FUSING UNIT • The Fusing Unit functions to fix permanently the developed image to the paper by applying heat to the toner and paper. A given pressure is also applied between the Upper and Lower Fusing Rollers, thereby providing a certain width of area of contact between the two rollers. This offers a longer fusing time and, at the same time, helps toner to be fused into the paper easily. • The Upper Fusing Roller is provided with two heater lamps - Main Heater Lamp H1 and Sub Heater Lamp H2.
Part Name Symbol Function 1 Web Take-Up Roller Takes up the Cleaning Web being supplied from the Web Roller. 2 Oil Supply/Web Feeding Roller Presses the Cleaning Web down onto the surface of the Upper Fusing Roller and feeds the Cleaning Web as it is taken up by the Web Take-Up Roller. 3 Web Regulating Plate Held tightly up against the Web Roller to prevent the Cleaning Web from developing slack as it is being fed out.
21-2. Fusing Rollers and Web Roller • A teflon-coated roller is used, which makes for improved fusing performance and a reduced consumption of silicone oil. In addition, it stands up well to high temperature and repels the adherence of melted toner. It is so hard that it is resistant to wear and damage. This ensures a longer life. • A conductive coating has been applied to the surface of the Upper Fusing Roller, which neutralizes any charges and helps prevent the production of offsets.
21-3. Drive for the Fusing Unit • The Fusing Unit is driven by Fusing Motor M6 fitted to the Fusing Drive Unit in the rear of the copier. (M6 is fitted to the copier frame, not to the Fusing Unit.) *The illustration shows the unit viewed from the rear of the copier. Upper Fusing Roller Drive Gear Paper Exit Roller Upper Fusing Roller Lower Fusing Roller Clutch Spring Fusing Motor M6 The gears enclosed by are on the copier frame.
◆ Fusing Motor M6 Control • M6 is energized at the same time when the Start Key is pressed and deenergized approx. 600 msec. after the trailing edge of the last copy has deactivated Paper Exit Sensor PC36. (The Start Key should be pressed when the copier is ready to make copies after having completed warming up.) Start Key ON ON Fusing Motor (M6) OFF Paper Exit Sensor (PC36) H L Energized 600 msec No Copy Last Copy The trailing edge of the last copy moves past PC36.
21-4. Fusing Rollers Pressure Mechanism • To ensure that there is a certain width of area of contact between the Upper and Lower Fusing Rollers, a pressure spring is installed to each of the front and rear Pressure Holders. • The Lower Fusing Roller is held pressed against the Upper Fusing Roller at all times. It is released only when servicing the copier. Pressure can be adjusted with the Pressure Adjusting Screws at the front and rear.
21-6. Cleaning Web Take-Up Mechanism/Control • The Cleaning Web wound around the Web Roller is taken up by the Web Take-Up Roller which is driven by Cleaning Web Drive Motor M16. • M16 is turned about one turn in every ten copy cycles. * The length of the Cleaning Web taken up per one revolution of M16 varies depending on the amount of Cleaning Web which has already been taken up.
◆ Cleaning Web Drive Motor M16 Control • Cleaning Web Drive Motor M16 is energized by a LOW M16 Remote signal output from pin 2 of PJ4A on Master Board PWB-A, which occurs each time when five copies have been made. • The LOW M16 Remote signal output from pin 2 of PJ4A is input to pin 5 of PJ10 on M14/M16 Drive Board PWB-O. Then, power (ac converted from dc) is supplied from pins 3 and 4 of PJ20 on PWB-O to M16, turning M16 about one turn.
21-7. Fusing Temperature Control • The Fusing Unit is provided with three heater lamps, each turning ON to provide fusing temperature control at a particular timing so that power consumption can be minimized. Part Name Symbol Controlled Temperature Function Turns ON during the warming-up cycle, a copy cycle, and in the standby state following the completion of warm-up. (The lamp provides temperature control at all times.
• Upper Fusing Roller Thermistor TH1 and Lower Fusing Roller Thermistor TH2 detect the surface temperatures of the corresponding rollers. They provide analog voltage inputs to pin 7 of PJ5A (TH1) and pin 3 of PJ5A (TH2) on Master Board PWB-A, respectively. This controls the fusing temperature. • H1 is turned ON or OFF by the Remote signal output from pin 3 of PJ7AA on PWB-A. • H2 is turned ON or OFF by the Remote signal output from pin 2 of PJ7AA on PWB-A.
1075C21MAA M-174
• Predrive is controlled in three different ways depending on the surface temperatures of the Upper and Lower Fusing Rollers. This is done to save downtime for clearing of misfeeds and other troubles. Fusing Roller Condition Surface Temperature of Upper/Lower Fusing Roller Predrive 1 Cool The surface temperature of the Upper Fusing Roller is 170°C or less. Predrive for 85 sec.
21-8. CPM Control • The CPM (copies/minute) control is provided to keep good fusing performance even in multi-copy cycles and with the system power sourced from a single power outlet. • As we noted earlier, only Upper Fusing Roller Main Heater Lamp H1 is ON during a copy cycle. Because of that, the Fusing Roller surface temperatures go down in a multi-copy cycle, resulting in degraded fusing performance.
◆ Multi-Copy Cycle Immediately After Warm-up in Early Morning (normal CPM: 60) Start Key ON CPM Control (45 copies/min.) Normal CPM (60 copies/min.
22 EXIT/DUPLEX SWITCHING UNIT 22-1. Construction • The Exit/Duplex Switching Unit functions to switch the paper path to feed the copy: ➀ Out onto the Exit Tray; or, ➁ Down into the Duplex Unit. 5 4 6 Fusing Unit 3 Transport Roller 2 Upper Fusing Roller 1 Rear View Transport Rolls Lower Fusing Roller Turnover Feed Sensor PC37 Front View 7 Part Name Symbol Function 1 Exit Tray Receives the copy fed out of the copier. 2 Paper Exit Roller Feeds the copy out onto the Exit Tray.
22-2. Exit/Duplex Switching Mechanism/Control • Exit/Duplex Switching Solenoid SL1 is energized or deenergized to operate the Exit/Duplex Switching Plate so that the copy is fed either out onto the Exit Tray or down into the Duplex Unit.
• SL1 is energized and deenergized by the signal output from pin 1 of PJ6A on Master Board PWB-A. • The Exit/Duplex Switching Plate is operated at the following timings. H TRON Signal L Synchronizing Motor ON (M4) OFF Exit/Duplex Switching ON Solenoid (SL1) OFF 930 msec. 1,460 msec.
23 DUPLEX UNIT TURNOVER MECHANISM • The turnover mechanism of the Duplex Unit reverses the copy fed from the Exit/Duplex Switching Unit and feeds it into the Duplex Unit, the trailing edge of the copy first. 23-1.
23-2. Drive Mechanism • Duplex Unit Drive Motor M7 gives drive to each roller of the turnover mechanism. Turnover Transport Roller Turnover Feed Sensor PC37 Duplex Unit Turnover Switching Solenoid SL11 Slip Roller Turnover/Paddle Roller Duplex Unit Turnover Path Sensor PC39 Gear on Duplex Unit *M7 is in the Duplex Unit.
23-3. Duplex Unit Turnover Mechanism • The paper is turned over as follows. 1) The paper from the Fusing Unit is directed down toward the turnover mechanism by the Exit/Duplex Switching Plate. * The leading edge of the paper blocks ( L ) Turnover Feed Sensor PC37. 2) The Turnover Transport Roller is driven to feed the paper to the Turnover/Paddle Roller.
Duplex Unit 4) When the trailing edge of the paper moves past the tip of the Turnover Roll C Release Lever, the release lever returns to its original position. The paper is then moved up by Turnover Roll C and the Slip Roller. When Duplex Unit Turnover Switching Solenoid SL11 is energized, the Paddle Roller of the Turnover/Paddle Roller starts turning and the paddles feed the paper into the Duplex Unit.
• SL11 is energized 300 msec. after Turnover Feed Sensor PC37 has gone from LOW to HIGH as the trailing edge of the paper moves past it. The solenoid remains energized for 100 msec. Leading Edge of Paper Turnover Feed Sensor (PC37) H Trailing Edge of Paper Paper Present L Duplex Unit Turnover ON Switching Solenoid (SL11) OFF 220 msec. 100 msec. 1075T124CB • SL11 is energized and deenergized by the signal output from pin 2 of PJ6A on Duplex Unit S/P Board PWB-G.
24 DUPLEX UNIT • The size of the paper that can be stored in the Duplex Unit is as follows. Metric areas ... A5 lengthwise (148 mm × 210 mm) to A3 lengthwise (297 mm × 420 mm) Inch areas ..... 5-1/2" × 8-1/2" to 11" × 17" • The Duplex Unit can store up to 50 sheets of Minolta-recommended paper weighing 60 g/m2. It can also store thick paper weighing 60 to 157 g/m2. 24-1.
Part Name 1 Symbol Upper Guide Plate Assy Duplex Unit Gate 2 Switching Solenoid Function Serves as a top guide for the paper being fed into the Duplex Unit. SL2 Operates the Gate Switching Lever. When the paper length exceeds 297 mm, the solenoid is energized to allow the paper through Gate 2 into the Copy Storage. 3 Gate 1 Transport Roller Feeds the 297-mm-or-shorter paper into the Copy Storage.
24-2. Trailing Gate Unit Moving Mechanism/Control • The Trailing Gate Unit is moved as necessary to store paper of different sizes. The unit is moved as drive from Duplex Unit Gate Motor M9 is transmitted via a gear train to the Screw Cam and Screw Pin. It is moved in the direction of the arrow ↔. • This is done to enhance the Duplex Units paper storage performance (misfeed prevention, appropriate storing sequence, etc.).
24-3. Gate Switching Mechanism/Control • When paper is to be stored into the Duplex Unit, the Gate Switching Lever is operated as necessary according to the paper size to select Gate 1 or Gate 2. • The Gate Switching Lever is operated by Duplex Unit Gate Switching Solenoid SL2 which is energized or deenergized according to the paper size to select Gate 1 or Gate 2 as shown in Table 1 on the next page. • SL2 is operated at the same time when the paper take-up sequence starts.
24-4.
24-5. Front/Rear Edge Guide Plate Drive Mechanism/Control • The Front and Rear Edge Guide Plates of the Duplex Unit align the front and rear edges of the paper being stored into the Copy Storage. • The drive mechanism employs a rack and pinion gear and each of the two guide plates is moved over the same distance (because of center registration) by the gear and belt driven by Duplex Unit Front/Rear Edge Guide Drive Motor M10. • M10 turns in steps, each step moving each guide plate a distance of about 0.
◆ Operation of the Front/Rear Edge Guide Plates (for A4 lengthwise paper) • The Front/Rear Edge Guide Plates are located at a position where Duplex Unit Front/Rear Edge Guide Plate Home Position Sensor PC42 is blocked. Rear Edge Guide Plate Front Edge Guide Plate PC42 M10 307 mm 1075M033AA • Select the 2-sided copy mode and press the Start Key.
24-6. Storing of Copies in Duplex Unit • The 1-sided copy is stored into the Copy Storage of the Duplex Unit as detailed below during the 2-sided copy mode. Select the 2-sided copy mode. Press the Start Key. Duplex Unit S/P Board An M7 Remote signal is output from pin 31 of IC1G (to turn M7 forward). M9 pulse signals are output from pins 56 to 62 of IC1G (to turn M9 forward and backward). M10 pulse signals are output from pins 35 to 38 of IC1G (to turn M10 forward).
1075C31MAA M-194
24-7. Leading Edge Guide Plate and Duplex Paper Take-Up Drive Mechanism/Control • Copies stored in the Duplex Unit are taken up and fed back into the copier for the second copy cycle by the Duplex Paper Take-Up Roll and Feed Roll. These rolls are driven as Paper Take-Up Motor M1 of the copier drives the Duplex Paper Take-Up Roll shaft. The top copy is separated from the remaining ones by a paper separating mechanism with a torque limiter.
◆ Duplex Vertical Transport Rollers Drive • The paper taken up from the Duplex Unit is fed by the Duplex Vertical Transport Rollers onto the Transport Rollers of the copier. • The Duplex Vertical Transport Rollers are driven by Vertical Transport Motor M2 of the copier. Section Transport Roller Duplex Paper Take-Up Area Transport Roller Sensor PC26 Duplex Vertical Transport Roller Vertical Transport Motor M2 This gear is free on the shaft.
24-8. Duplex Paper Take-Up Operation ◆ Normal mode (Making 2 2-sided copies on A4 crosswise paper from 1-sided originals by using the Duplexing Document Feeder) Start Key ON Fusing Motor (M6) Duplex Paper Take-Up Start ON OFF Vertical Transport ON Motor (M2) OFF Paper Take-Up ON Motor (M1) OFF Align/Retract Align Return to Home Duplex Unit Front/Rear Edge ON Guide Drive Motor (M10) OFF Duplex Unit Leading Edge ON Solenoid (SL5) OFF Duplex Unit Pick-Up ON Solenoid (SL4) OFF 1st Copy 200 msec.
◆ Time Saver Mode • In the Time Saver mode, the copies stored in the Duplex Unit are taken up and fed back into the copier in a different order from when in the normal mode. When the number of copies remaining to be stored in the Duplex Unit becomes N, that copy is immediately taken up and fed back to the copier and the subsequent ones are taken up each time they have just been stored in the Duplex Unit.
The trailing edge of the 6th copy moves past Duplex Unit Paper Entry Sensor PC38 ( H ). Approx. 470 msec. The Front/Rear Edge Guide Plates move to the set paper size position to align the copy. At the same time, Duplex Unit Paper Finger Solenoid SL3 is energized and the Duplex Unit Paper Finger presses the copies stored in the Duplex Unit. The trailing edge of the 7th copy moves past PC38 ( H ).
1075C32MAA M-200
25 POWER SUPPLY The copier power is supplied as follows when the power cord is plugged in or Power Switch S1 is turned ON. 1. When Power Cord is Plugged in.
2. Power Switch S1 is Turned ON. Power Switch S1: ON DC Power Supply Board PWB-C Q1C:ON DC5V REM: H PJ1C-5 PJ10-1 DC5V is supplied to the various parts. DC Power Supply 1 PU2 PJ1A-4 Master Board PWB-A RY1 REM: L OP. RY REM: L SELF-HOLD OFF: H PJ12A-4 PJ12A-5 PJ12A7 PJ5C-4 PJ5C-3 PJ5C-1 DC5V is converted to 4.7V by VR1 and ZD1A. DC Power Supply Board PWB-C RY4C: RY5C: RY7C: RY8C: ON ON ON ON RY3C: ON RY6C: ON AC power is supplied. RY1C: ON RY2C: ON S1 is self-held.
1075C29TAA M-203
26 MEMORY BACKUP IC1 (RAM) of RAM Board PWB-R connected to Master Board PWB-A stores the setting/adjustment values set in the Tech. Rep. modes as well as the counter counts. Backup Battery BAT1 is mounted on PWB-R to prevent the contents of memory from being lost when the power cord is unplugged or PWB-R removed from the copier. BAT1 requires a voltage of 2 V or more to retain the contents of memory. Important As noted above, the RAM stores critical data.
Copyright 1994 MINOLTA CO., LTD Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA CO., LTD.
EP6000 DIS/REASSEMBLY, ADJUSTMENT
CONTENTS 1 SERVICE INSTRUCTIONS 1-1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS . . . D-1 1-2. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-3 1-3. HANDLING OF THE PC DRUM . . . . . . . . . . . . . . . . . . . . . . . D-3 1-4. PARTS WHICH MUST NOT BE TOUCHED . . . . . . . . . . . . . D-5 2 DISASSEMBLY/REASSEMBLY 2-1. DOORS, COVERS, AND EXTERIOR PARTS: IDENTIFICATION AND REMOVAL PROCEDURES . . . . . . . 2-2.
CONTENTS (10) Removal of the Lens Drive Cable . . . . . . . . . . . . . . . . . . D-32 (11) Winding of the Lens Drive Cable . . . . . . . . . . . . . . . . . . . D-35 (12) Removal of the Scanner Drive Cables . . . . . . . . . . . . . . D-37 (13) Winding of the Scanner Drive Cables . . . . . . . . . . . . . . . D-38 2-5. PC UNIT (1) Sliding Out the PC Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . D-41 (2) Removal of the Developing Unit . . . . . . . . . . . . . . . . . . . .
CONTENTS 2-7. DEVELOPING UNIT (1) Removal of the Sub Hopper . . . . . . . . . . . . . . . . . . . . . . . . D-50 (2) Disassembly of the Developing Unit and Replacement of Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-50 (3) Cleaning and Replacement of the Developer Scattering Prevention Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-53 (4) Cleaning and Replacement of the Side Seals . . . . . . . . .
CONTENTS 3 ADJUSTMENT 3-1. ADJUSTMENT JIGS AND TOOLS USED . . . . . . . . . . . . . . . D-68 3-2. ADJUSTMENT REQUIREMENTS LIST . . . . . . . . . . . . . . . . . D-69 3-3. ADJUSTMENT OF SWITCHES . . . . . . . . . . . . . . . . . . . . . . . D-70 (1) Microswitches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-70 (2) Adjustment of the Front Lower Door Interlock Switch (S2) Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS (7) Adjustment of Manual Feed Paper Pick-Up Solenoid (SL9) Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-83 (8) Adjustment of the Duplex Unit Turnover Switching Solenoid (SL11) Position . . . . . . . . . . . . . . . . . . . . . . . . . . D-84 3-7. ACCESSING THE TECH. REP. MODE AND ADJUST MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-85 (1) Accessing the Tech. Rep. Mode . . . . . . . . . . . . . . . . . . . .
CONTENTS (15) Adjustment of the Image Trailing Edge Erase Width (Adjust 2/2: A13 Trailing Edge Erase Adjust) . . . . . . . . . D-116 (16) Adjustment of the Image Erase Lamp (LA3) Position . . D-118 (17) Focus-Positioning of the Scanner and 2nd/3rd Mirrors Carriage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-119 (18) Focus Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-122 (19) Adjustment of the Image Transfer/Paper Separator Coronas Height . .
1 SERVICE INSTRUCTIONS 1-1. PRECAUTIONS FOR DISASSEMBLY/ADJUSTMENTS Observe the following precautions whenever servicing the copier. • Be sure to unplug the copier from the outlet before attempting to service the copier. • The basic rule is not to operate the copier anytime during disassembly. • • • • • • • • • • • • • • If it is absolutely necessary to run the copier with its covers removed, use care not to allow your clothing to be caught in revolving parts such as the Timing Belt and gears.
Scanner Control Processor Board PWB-J Circuit Breaker: 3.15A Exposure Lamp Thermal Switch TF1: 94°C Fusing Roller Thermal Fuse TF2: 220°C DC Power Supply 1 PU2: Metric areas: 250V, 12A Inch areas: 125V, 12A DC Power Supply Board PWB-C: 250V, T3A (4 pcs.) Circuit Breaker Metric areas: 10A (2 pcs.) Inch areas: 25A DC Power Supply 2 PU3: Metric areas: 250V, 3.15A Inch areas: 125V, 6.
1-2. INSTRUCTIONS FOR HANDLING THE PWBs WITH MOS ICs The following precautions must be observed when handling P.W. Boards with MOS (Metal Oxide Semiconductor) ICs. During Transportation/Storage: • During transportation or when in storage, new P.W. Boards must not be indiscriminately removed from their protective conductive bags. • Do not store or place P.W. Boards in a location exposed to direct sunlight.
If the surface is contaminated with fingerprints, clean it using the following procedure. 1. Place the PC Drum into one half its container. 2. Gently wipe the residual toner off the surface of the PC Drum with a dry, dust-free cotton pad. a) Rotate the PC Drum so that the area of its surface on which the line of toner left by the Cleaning Blade is present is facing staright up.
1-4. PARTS WHICH MUST NOT BE TOUCHED (1) Red Painted Screws Purpose of Application of Red Paint Red painted screws show that the assembly or unit secured can only be adjusted or set at the factory and shall not be readjusted, set, or removed in the field. Note that when two or more screws are used on the part in question, only one representative screw may be marked with red paint.
2 DISASSEMBLY/REASSEMBLY 2-1.
No. Part Name Removal Procedure 1 Front Lower Door Open the Front Lower Door. → Remove 2 belt mounting screws. → Remove 4 Front Lower Door mounting screws. 2 Front Upper Door Open the Front Upper Door. → Remove 1 belt mounting screw. → Remove 4 Front Upper Door mounting screws. 3 Control Panel Unit See p. D-8. Loosen the center upper mounting screw on the Right Upper Cover. → Pull the Upper Right Cover up. 4 Upper Right Cover 5 Right Upper Cover Open the Front Upper Door.
No. Part Name Removal Procedure 15 Rear Upper Cover Remove 3 Rear Upper Cover mounting screws. 16 Upper Rear Cover Remove 4 AFR-9 mounting screws. → Remove 2 Ornament Covers. → Remove 2 Upper Rear Cover mounting screws. 17 AFR-9 Unplug one connector. → Remove 2 AFR-9 mounting screws. 18 Original Glass 19 Original Width Scale 20 Upper Left Cover Remove the Upper Rear Cover. → Remove the Control Panel. → Remove 2 Upper Left Cover mounting screws.
2-2. REMOVAL OF CIRCUIT BOARDS AND OTHER ELECTRICAL COMPONENTS • When removing a circuit board or other electrical component, refer to "PRECAUTIONS FOR HANDLING THE PWBs" contained in SWITCHES ON PWBs and follow the corresponding removal procedures. • The removal procedures given in the following omit the removal of connectors and screws securing the circuit-board support or circuit board.
Symbol Name Removal Procedure PWB-A Master Board Remove the Right Upper Cover. → Remove PWB-A. PWB-B MSC Board Open the Front Lower Door. → Open the Front Upper Door. → Remove the Panel Lower Cover. → Remove PWB-B. PWB-C DC Power Supply Board Remove the Rear Lower Cover. → Remove PWB-C. PWB-D Noise Filter Board Remove the Rear Lower Cover. → Remove the Power Unit Assy. → Remove PWB-D. PWB-F Drawer S/P Board Remove the Rear Lower Cover. → Remove PWB-F.
Symbol Name Removal Procedure PU4 Pre-Image Transfer Lamp Power Supply Open the Front Lower Door. → Slide out the PC Unit. → Remove the Cleaning Unit. → Remove PU4. PU5 Exposure Lamp Regulator Remove the Rear Upper Cover. → Remove the Upper Rear Cover. → Remove the PWB-J. → Remove the PU5 Cover. → Remove PU5. HV1 PC Drum Charge HV Remove the Rear Upper Cover. → Remove the Upper Rear Cover. → Remove PWB-J. → Remove the HV1 mounting bracket. → Remove HV1.
2-3. PAPER TAKE-UP/TRANSPORT SECTIONS (1) Removal of the Paper Take-Up Unit 1. Remove the Right Door (Multi Bypass Unit). 2. Slide out the drawer. 3. Remove one screw and the harness cover. 4. Remove the locking wiring saddle. 5. Unplug connectors from Drawer S/P Board PWB-F. 6. Remove four screws each and slide the Paper Take-Up Unit in the direction shown in the illustration.
(2) Replacement of the Paper Take-Up Clutch 1. Remove the Paper Take-Up Unit. 2. Unplug one connector of the Paper Take-Up Clutch. 3. Remove three screws and the Paper Take-Up Clutch mounting bracket. 4. Remove the bushing and Paper Take-Up Clutch Assy. 5. Remove the E-ring and Paper Take-Up Clutch. NOTE When reinstalling the Paper Take-Up Clutch, secure it in position with the protrusion of the clutch aligned with the cutout in the mounting bracket.
(3) Replacement of the Paper Take-Up Roll, Paper Feed Roll, and Paper Separator Roll Assy 1. Open the Right Door. 2. Remove two screws and the Paper Separator Unit. 3. Remove the pivot pins on both ends and the Guide Plate. 4. Remove two shoulder screws of the Paper Separator Roll Assy. 5. Remove two C-clips and slide the bushing off to remove the Paper Separator Roll Assy. 6. Remove two screws and the Paper Guide Plate.
7. Remove the C-clip and slide the bushing to the side. 8. Slide the coupling to the left and remove the Paper Take-Up Roll Assy. 9. Remove the C-clip and slide the bushing off to remove the Paper Take-Up Roll and Feed Roll. NOTE When reinstalling the Paper Take-Up Roll Assy, place it horizontally by holding down the torsion spring.
(4) Cleaning of the Vertical Transport Rollers 1. Open the Right Door. 2. Using a soft cloth dampened with alcohol, wipe clean each Vertical Transport Roller. (5) Replacement of the Vertical Transport Rollers 1. Remove the Paper Take-Up Unit. 2. Remove the Misfeed Removal Knob, edge cover, and two pressure springs. 3. Remove four C-clips, two bushings, one gear, and two bearings. 4. Remove the Vertical Transport Roller (white) by sliding it in the direction shown. 5.
(6) Removal of the Lift-Up Motor (Metric areas only) 1. Remove the Right Rear Cover and Rear Lower Cover. 2. Unplug the connectors from DC Power Supply Board PWB-C and Drawer S/P Board PWB-F and remove the harness from the wiring saddle. 3. Remove four screws and the mounting brackets for PWB-C and PWB-F. 1075D017AA 4. Remove the Toner Collecting Bottle. Remove two screws and the metal plate. 5. Remove four screws and unplug one connector to free the Vertical Transport Motor Assy. 6. Remove five screws.
(7) Removal of the Synchronizing Rollers Unit 1. Open the Front Lower Door and remove three screws and the Total Counter Cover. 2. Release and swing up the Upper Half of the copier and remove two screws and the Image Transfer Cover. 3. Unplug two connectors and remove one screw and the Image Transfer/Paper Separator Coronas. 4. Open the Right Door (Multi Bypass Unit). 5. Unplug two connectors, remove the two screws shown, and pull the Synchronizing Rollers Unit out to the front.
(8) Disassembly of the Synchronizing Rollers Unit 1. Remove the Synchronizing Rollers Unit. 2. Unhook one spring. Remove the Misfeed Removal Guide Plate by turning it 90° and then lifting it. 3. Remove the pressure springs at the front and rear, Upper Transport Roller, and Upper Synchronizing Roller. NOTE Different types of pressure springs are used for the Transport Roller and Synchronizing Roller. That for the Transport Roller is thinner than that for the Synchronizing Roller.
6. Remove the M4 Misfeed Removal Knob and E-ring and pull out the bushing for the Lower Transport Roller. 7. Remove the M2 Misfeed Removal Knob, gear, and E-ring and pull out the bushing for the Lower Synchronizing Roller. 8. Remove the Lower Transport Roller by sliding it in the direction shown. 9. Remove the Lower Synchronizing Roller by sliding it in the direction shown.
(9) Removal of the Suction Belts 1. Open the Front Lower Door and release and swing up the Upper Half of the copier. 2. Remove two screws and the Image Transfer Cover. 3. Remove four screws and the Suction Unit. TIP Remove the Fusing Unit first, which will make the job easier. NOTE At reinstallation, press the Suction Unit against the Suction Base Plate. 4. Work the Suction Belts Driven Roller off the Suction Unit Frame to remove the Suction Belts.
(10) Disassembly of the Multi Bypass Unit 1. Remove the Right Door (Multi Bypass Unit). 2. Remove the three screws shown and the Multi Bypass Unit. 3. Loosen two screws, slide the pivot shaft to the side and remove the Multi Bypass Table. 4. Remove two screws and the Manual Feed Paper Pick-Up Solenoid Assy Cover.
5. Remove three screws, unplug two connectors, and remove the Manual Feed Paper Pick-Up Solenoid Assy. 6. Remove the Paper Take-Up Roll Assy by removing the two C-clips, gear, and bushings shown. 7. Disassemble the Paper Take-Up Roll Assy.
8. Remove four screws and the Guide Plate. 9. Remove the Paper Separator Roll pressure spring. 10. Remove the C-clip and Paper Separator Assy. 11. Remove the C-clip, slide the bushing off, and remove the Paper Separator Roll Assy.
(11) Removal of the 3rd Drawer 1. Press the Paper Descent Key and slide out the 3rd Drawer. ∗ If pressing the Paper Descent Key does not allow you to slide out the 3rd Drawer, insert a screwdriver or similar object through the hole in the Rear Lower Cover and unlock the drawer. 2. Remove four screws on the Slide Rails and pull the 3rd Drawer out to the front. 3. Unplug one connector, loosen two thumbscrews to remove the Connector Board Assy, and remove the 3rd Drawer.
5. Remove three screws and the drive base plate. 6. Remove four E-rings, four pulley covers and four pulleys. 7. Remove four wire holders and the Main Tray. NOTES • Use care not to bend the wire. • Use new wire holders at reinstallation. 8. Remove four screws each and the Frame Assy at the front and rear. 9. Remove the E-ring, slide the bushing off, and remove the Wire Take-Up Pulley Assy.
(13) Removal of the Paper Drawer (Inch areas only) 1. Press the Paper Descent Key and slide out the drawer. ∗ If pressing the Paper Descent Key does not allow you to slide out the drawer, open the Right Door and push the Lock Release Lever shown in the illustration with a screwdriver or similar object to unlock the drawer. 2. Remove two screws and the metal plate. 3. Remove one screw and the connector cover. 4. Unplug one connector and remove one screw and flat cable mounting bracket. 5.
(14) Removal of the Lift-Up Motor (Inch areas only) 1. Slide out the drawer. 2. Remove one screw and the Lift-Up Motor Cover. 3. Unplug one connector. 4. Remove one E-ring and the Lift-Up Motor. NOTE If the Lift-Up Motor is replaced with a new one, loosen the screw and, while lightly pressing the Lift-Up Motor fixing bracket in the direction of the arrow, tighten the screw.
2-4. OPTICAL SECTION (1) Cleaning of the Original Glass 1. Wipe clean the Original Glass with a soft cloth. NOTE The surface of the Original Glass is coated with conductive material. Do not use a wax-based detergent. An alcohol-dampened cloth may be used if the glass is seriously contaminated. 1075D040AA (2) Cleaning of the Scanner Rails/Bushings 1. Remove the Original Glass. 2. Using a soft cloth, wipe clean the Scanner Rails/Bushings (at the front). 3.
4. Remove two screws shown and turn the Scanner sideways to remove the Scanner from the copier. (4) Cleaning of the Exposure Lamp 1. Remove the Scanner. 2. Remove one screw and the Exposure Lamp terminal. 3. Remove the Exposure Lamp. NOTE When the Exposure Lamp has been cleaned or replaced, be sure to make the "adjustment of exposure level in the Auto Exposure mode." (See p. D-90.) 4. Using a soft cloth dampened with alcohol, clean the lamp by gently wiping its surface in one direction.
(6) Cleaning of the 1st, 2nd, and 3rd Mirrors and Original Size Detecting Sensors 1. Remove the Original Glass. 2. Wipe clean the 1st Mirror with a soft cloth. 3. Wipe clean the 2nd and 3rd Mirrors with a soft cloth. NOTE After the 1st, 2nd, and 3rd Mirrors have been cleaned, make the "adjustment of exposure level in the Auto Exposure mode." (See p. D-90.) 4. Clean the Original Size Detecting Sensors with a soft cloth. (7) Cleaning of the Lens and 4th and 5th Mirrors 1. Remove the Original Glass. 2.
4. Wipe clean the 4th and 5th Mirrors with a soft cloth. NOTE After the Lens and 4th and 5th Mirrors have been cleaned, make the "adjustment of exposure level in the Auto Exposure mode." (See p. D-90.) (8) Cleaning of the 6th Mirror and Image Erase Lamp 1. Open the Front Lower Door, slide out the PC Unit and release and swing up the Upper Half of the copier. 2. Wipe clean the 6th Mirror and Image Erase Lamp with a soft cloth.
4. Remove one screw and the AE Sensor mounting bracket. 5. Remove two screws and the Lens Drive Cover. 6. Remove one screw and the Light Blocking Mylar mounting bracket. 7. Remove one screw that secures the Lens Drive Cable. 8. Open the Front Upper Door, turn the Toner Bottle 90° and remove three screws and the cover shown. 9. Unplug the connector of the Lens X Direction Drive Motor.
10. Snap off the E-ring that secures the 4th/5th Mirrors Moving Lever. 11. Remove three screws and the Lens Drive Motor Assy. 1075D064AA 12. Snap off the E-ring and remove the 4th/5th Mirrors Positioning Lever. 1075D065AA 13. Loosen the screw that secures the cam and remove the cam. 14. Remove three screws and the upper frame.
15. Work off the cable and remove the drive gear. (11) Winding of the Lens Drive Cable 1. Hold the Cable Drive Gear with the bead at the bottom. 2. Wind the length of the cable with a bead on its end four and 1/2 turns clockwise around the Cable Drive Gear, working from the back to the front side. Then, tape it. NOTE When winding the cable, make sure that no part of the cable rides on the other.
3. Wind the other length of the cable two and 1/2 turns counterclockwise around the Cable Drive Gear, working from the front to back side. Then, tape it. NOTE When winding the cable, make sure that no part of the cable rides on the other. 4. Place the Cable Drive Gear onto the lower frame and insert a wrench into the hole to position the gear. 5. Wind both lengths of the cable around the pulleys and pull the spring to connect the two lengths. 6. Remove the wrench and peel off two pieces of tape. 7.
8. Turn ON the Power Switch to bring the Lens to the full size position. NOTE Be careful, the Scanner moves when the Power Switch is turned ON. 9. Install the 4th/5th Mirrors Positioning Jig and, when the hole in the cam is aligned with the pin on the jig, tighten the set screw. NOTE From a safety viewpoint, turn OFF the Power Switch before tightening the set screw that secures the cam. (12) Removal of the Scanner Drive Cables 1.
7. Remove six screws. Remove the holding brackets at the front and rear of the Scanner Drive Shaft and the Scanner Drive Shaft Assy. 8. Disassemble the Scanner Drive Shaft Assy as illustrated below.
Front 1. Pass the Scanner Drive Cable into the pulley as shown so that the round bead is at the center of the pulley. 1075D363AA 2. Holding the pulley as shown, wind the side of the cable with two fixing beads clockwise six turns around the pulley, working from the back to front side. 3. Wind the shorter length of the cable counterclockwise two turns, working from the front to the back side. Then, slip the Cable Holding Jig onto the pulley.
6. Wind the shorter length of the cable counterclockwise two turns, working from the front to the back side. Then, slip the Cable Holding Jig onto the pulley. NOTE Make sure that no part of the cable rides on the other. 7. Assemble the Scanner Drive Shaft Assy and install it in the copier. NOTE When securing the Scanner Drive Shaft Assy, press it against the optical frame. 8.
2-5. PC UNIT (1) Sliding Out the PC Unit 1. Open the Front Lower Door. 2. Loosen one screw and slide out the PC Unit. 1075U007AA (2) Removal of the Developing Unit 1. Slide out the PC Unit. 2. Loosen two screws and remove the Developing Unit. ∗ For the Developing Unit, see 2-7. DEVELOPING UNIT. 1075U008AA (3) Removal of the PC Drum Charge Corona 1. Remove the Developing Unit. 2. Unplug one connector and remove the PC Drum Charge Corona. ∗ For the PC Drum Charge Corona, see 2-6.
(5) Replacement of the PC Drum 1. Remove the PC Drum Charge Corona. 2. Unlock two PC Drum Lock Levers and remove or replace the PC Drum. NOTE When the PC Drum has been replaced, clear the "PC Drum" count of "Port/Option 3/3" available from "Counter" under the Tech. Rep. mode and make the adjustment of exposure level in the Auto Exposure mode. (6) Cleaning of the Pre-Image Transfer Erase Lamp 1. Remove the PC Drum. 2. Blow all foreign matter off the Pre-Image Transfer Erase Lamp with a blower brush.
3. Remove one screw and the Main Erase Lamp. 1075D089AA (9) Cleaning of the Pre-Cleaning Erase Lamp, Toner Antispill Seal, AIDC Sensor, and PC Drum Paper Separator Fingers 1. Remove the PC Drum. 2. Using a brush or soft cloth, clean the Pre-Cleaning Erase Lamp, Toner Antispill Seal, AIDC Sensor, and PC Drum Paper Separator Fingers. (10) Disassembly of the PC Drum Paper Separator Fingers Assy 1. Remove the PC Drum. 2. Remove the Cleaning Unit. 3.
5. Remove the PC Drum Paper Separator Fingers and AIDC Sensor UN9 as illustrated below. NOTE During removal and reinstallation of the PC Drum Paper Separator Fingers, use care not to damage the tips of the fingers (scratches, bend, etc.). Be also careful not to hurt yourself with the tips of the fingers. 6. When reinstalling the PC Drum Paper Separator Fingers, be sure to rehook the torsion coil spring correctly as shown. After reinstallation, check that the fingers move smoothly.
(11) Removal of the Toner Antispill Seal and Pre-Cleaning Erase Lamp 1. Remove the PC Drum Paper Separator Fingers Assy. 2. Remove two screws shown. 3. Unplug one connector and remove the Toner Antispill Seal and Pre-Cleaning Erase Lamp. 1075D095AA (12) Replacement of the Cleaning Blade 1. Remove the PC Drum and Main Erase Lamp. 2. Remove two screws and the Cleaning Blade and replace it. 1075D096AA NOTE When installing the Cleaning Blade, press it against the mounting bracket.
3. Holding onto both ends of the PC Drum, turn the PC Drum 1/2 turn in the direction of arrow A, then turn it one turn in the direction of arrow B. A B Function Menu F1 Paper Passage F7 Orig. Sensor F2 Drum/Trans F8 ATDC Adjust F3 Exp. Lamp FD Paper Width F4 HV Separator FE Blade Priming 4. Reinstall the PC Unit and run the FE operation (Blade Priming) of "Function" available from the Tech. Rep. mode. F5 Optimum & AE F6 Edit Ref. Adj 1075U063CA (13) Replacement of the PC Ground Plate 1.
2-6. PC DRUM CHARGE CORONA AND IMAGE TRANSFER/PAPER SEPARATOR CORONAS (1) Replacement of the PC Drum Charge Corona Wires and Wire Cleaner 1. Remove the PC Drum Charge Corona. 2. Remove the Grid Meshes. 3. Remove the holder covers at the front and rear. 1075D103AA 4. Extend the corona wire spring and remove the corona wire and wire cleaner. 1075D104AA 5. Unlock the wire cleaner lock and remove the wire cleaner. (2) Cleaning of the PC Drum Charge Corona Housing 1.
(3) Cleaning and Replacement of the Grid Mesh 1. Blow all foreign matter off the Grid Mesh with a blower brush. NOTE If the blower brush is not effective in cleaning the Grid Mesh, use a soft cloth dampened with alcohol to clean serious contamination. NOTE Place the Grid Mesh on a flat surface and sweep the cloth along the mesh. Do not touch the cleaned Grid Mesh with bare hands. 2. When installing the Grid Mesh, make sure that it does not ride on the protrusions indicated by the arrows.
(5) Replacement of the Image Transfer/Paper Separator Corona Wires and Wire Cleaners 1. Remove the Image Transfer/Paper Separator Coronas. 2. Remove the holder covers at the front and rear and four paper guides. 1075D110AA 3. Extend the corona wire spring and remove the corona wire and wire cleaner. 4. Unlock the wire cleaner lock and remove the wire cleaner. (6) Cleaning of the Image Transfer/Paper Separator Coronas Housing 1. Using a soft cloth dampened with alcohol, wipe the housing clean of dirt.
Copyright 1994 MINOLTA CO., LTD Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA CO., LTD.
EP6000 SWITCHES ON PWBs, TECH. REP.
CONTENTS 1 PRECAUTIONS FOR HANDLING THE PWBs 1-1. Precautions for Transportation and Storage . . . . . . . . . . . . . . . . S-1 1-2. Precautions for Replacement/Inspection . . . . . . . . . . . . . . . . . . . S-1 2 CONTROL PANEL KEYS AND TOUCH PANEL 2-1. Control Panel Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-2 2-2. Explanation of the Touch Panel . . . . . . . . . . . . . . . . . . . . . . . . . . S-4 3 FUNCTIONS OF SWITCHES AND VARIABLE RESISTORS ON PWBs 3-1.
CONTENTS 3. System Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-33 3-1. System Setting setting procedure. . . . . . . . . . . . . . . . . . S-33 3-2. Settings in the System Setting mode . . . . . . . . . . . . . . . S-33 4. Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35 4-1. Counter setting procedure. . . . . . . . . . . . . . . . . . . . . . . . S-35 4-2. Settings in the Counter mode . . . . . . . . . . . . . . . . . . .
1 PRECAUTIONS FOR HANDLING THE PWBs 1-1. Precautions for Transportation and Storage a) Before transporting or storing the PWBs, put them in protective conductive cases or bags so that they are not subjected to high temperature (they are not exposed to direct sunlight.) b) Protect the PWBs from any external force so that they are not bent or damaged.
2 CONTROL PANEL KEYS AND TOUCH PANEL * For more details, see the "Operator’s Manual" shipped together with the copier. 2-1. Control Panel Keys 1 2 Auxiliary User Mode Finishing Orig. 3 Copy Job Recall 1 2 3 4 5 6 7 8 9 0 C 4 Basic Ready to Copy 1 Auto Exp. x1.000 Auto Paper Exposure Zoom Paper 5 6 Mode Check 7 1134P476DA 12 1 11 10 9 8 1134P476DA User Mode Key • Shows the User Mode setting screen on the Touch Panel. It looks like as follows.
1 2 Auxiliary User Mode Finishing Orig. Copy Ready to Copy Job Recall 3 4 1 2 3 4 5 6 7 8 9 0 C Basic 1 Auto Exp. x1.000 Auto Paper Exposure Zoom Paper 5 6 Mode Check 7 1134P476DA 12 2 Touch Panel 3 10-Key Pad 4 5 11 10 • A large liquid-crystal display is used for greater ease of operation. 8 9 Access Mode Key • Enables and disables a copy cycle if "Copy Track" has been turned ON of User’s Choice.
2-2. Explanation of the Touch Panel • The screen shown on the Touch Panel is classified into the four types: the Basic, Warning, User Mode, and Tech. Rep. Mode screens. • Following is the detailed explanation of what is shown on the Basic and Warning screens. (1) Basic Screen • The Basic screen is the initial screen that appears when the power is turned ON, the control panel is reset, or auto clear function is activated. 1 2 Auxiliary 3 Finishing Orig. Copy Basics Ready to copy. Auto Expo.
1 2 Auxiliary 3 Finishing Orig. Copy Basics Ready to copy. Auto Expo. 1 x1.000 4 Auto Paper 5 8 Exposure Zoom Paper 6 £ Staple 1134P429CA 7 5 Paper Key • When the Paper key is touched, a screen appears that allows the operator to select the paper size. • The graphic symbol " " appears on the paper size key when the corresponding drawer runs out of paper. 6 Zoom Key • When the Zoom key is touched, a screen appears that allows the operator to select the zoom ratio.
(2) Warning Screen • The warning screen may be a malfunction display, error display, warning display, or a caution display. • Here are examples to show what kind of information each display gives. A malfunction display is given when trouble occurs which cannot be corrected by the user and requires remedial action by the Tech. Rep. (For example, a malfunction that can be identified with a specific code.
3 FUNCTIONS OF SWITCHES AND VARIABLE RESISTORS ON PWBs 3-1.
3-2. Power Supply Board (PWB-C) • When the DT-103 is fitted to the copier, this switch is used to keep the power (DC5V) supplied to the DT-103 if the Power Switch is turned OFF. S1C Description Position A DC5V is shut off when the Power Switch is turned OFF. Position B DC5V is supplied if the Power Switch is turned OFF.
3-3. Tech. Rep. Settings Switches Board (PWB-I) Symbol Name Description Trouble Reset Switch Used to reset trouble related to Exposure Lamp malfunction (C04XX) and Fusing malfunction (C05XX). Contrast Adjusting Variable Resistor Used to adjust the contrast of the Display. Initialize Points Used to forcibly reset a jam/trouble that occurred due to incorrect operation, etc. when it cannot be reset by opening and closing the Front Door or pressing S1. GND Test Point Ground used for memory clear.
• Initialize Points (PJ2) 1. Turn the Power Switch OFF. 2. With the PJ2I points (1, 2) shorted, turn the Power Switch ON. • Memory Clear Test Point (TP2) 1. Turn the Power Switch OFF. 2. With the TP1 and TP2 points shorted, turn the Power Switch ON.
4 USER’S CHOICE MODE • This mode is used by the user to make various settings according to user requirements. 4-1. User’s Choice Mode Menu Screen • Select the User Mode key on the control panel. User Mode Exit Select a function by pressing the key. Data Send Job Memory Input Zoom Memory Input Meter Count Toner RePlenisher Drum Dehumidifier User's Choice 1134P359CA • From among the modes displayed, select User’s Choice to enter the User’s Choice mode.
4-3. Settings in the User’s Choice Mode 4-3-1. Menu screen 1/6 User's Choice 1/6 Exit Select a key to change settings, or press Pg.# key for additional menu. Mixed Orig. Detection: OFF Language Selection: English Paper Priority: Letter Copy Mode Priority: Auto Size 1/6 2/6 3/6 4/6 5/6 /1 6/6 1134P368EA 1. Mixed Original Detection mode Used to select "Mixed Original Detection" or "High Speed". Mixed Orig.
3. Paper Priority Used to select the paper in the priority paper source in the AMS or Manual Mode. Paper Source Initial Setting 1st Drawer ∗ 2nd Drawer 3rd Drawer C-302 4. Copy Mode Priority Used to select the Auto Mode which is given priority when the Power Switch is turned ON or Panel Reset Key pressed. Screen Display Initial Setting Auto Paper ∗ Auto Size Manual 4-3-2. Menu screen 2/6 User's Choice 2/6 Exit Select a key to change settings, or press Pg.# key for additional menu. Expo.
2. Exposure Level Priority • Used to select the auto exposure level in the Auto Exposure mode. • Used to select the manual exposure level when the Auto Exposure mode has been switched to the Manual Exposure mode. Screen Display Description Lighter Equivalent to EXP. 4.5 Initial Setting Normal Equivalent to EXP. 5.0 Darker Equivalent to EXP. 5.5 ∗ Description Initial Setting Description EXP. 1 EXP. 6 EXP. 2 EXP. 7 EXP. 3 EXP.
4. Priority Sort Used to select the priority exit mode when the copier is fitted with an exit option. Screen Display Initial Setting Non Sort ∗ Sort Sort & Staple Group 4-3-3. Menu screen 3/6 User's Choice Exit Select a key to change setting, or press Pg.# Key for additional menu. Auto Panel Reset: 1min. Energy Saver Mode: OFF Drum Dehumidifier: OFF Counter Removal: ON 1/6 2/6 3/6 4/6 5/6 6/6 1134S029CA 1.
2. Energy Saver Mode Used to turn "ON" or "OFF" the Energy Saver Mode. Set the time for this Mode when "ON" is selected. Description Initial setting 1 to 10 min. ∗ OFF • To select "ON", enter the required value from the 10-key pad. When the value entered is wrong, press the Clear Key to clear the value to zero. Then, enter a correct value. • To select "OFF", press "OFF" on the screen. 3. Drum Dehumidifier Used to turn "ON" or "OFF" the Drum Dehumidifier when the Power Switch is turned ON.
4-3-4. Menu screen 4/6 User's Choice Exit Select a key to change setting, or press Pg.# Key for additional menu. Intelligent Sort: ON Confirmation Beep: ON Original Thickness: Standard Smaller Originals: EnableCopy 1/6 2/6 3/6 4/6 5/6 6/6 1134S030CA 1.
4. Smaller Originals Used to turn "ON" or "OFF" the copying of originals of the minimum detectable size (less than A5 lengthwise). Screen Display Description Initial Setting ON Originals are copied onto paper fed through the priority paper source. ∗1 OFF Warning is displayed and copying is disabled. ∗2 ∗1: Europe Area, ∗2: USA/Canada Area 4-3-5. Menu screen 5/6 User's Choice Exit Select a key to change setting, or press Pg.# Key for additional menu.
2. Custom 2-in-1 Separation Used to specify the priority modes (Paper, Zoom, Margin, Erase) when 2-in-1 Separation is selected. Mode Paper Description Auto paper/select a give drawer Initial Setting Auto paper ×1.
4. Special Paper Used to specify the type of paper loaded in each paper source. Screen Display S0: Normal S1: Recycled S2: Insert Paper S3: Not for 2-Sided The initial settings are all S0.
4-3-6. Menu screen 6/6 User's Choice Exit Select a key to change setting, or press Pg.# Key for additional menu. CopyTrack: OFF User Help: OFF Max. Copy Sets: 1/6 2/6 3/6 4/6 5/6 6/6 1134S032CA 1. Copy Track Used to turn "ON" or "OFF" the Copy Track function per account (max. 26 accounts). Screen Display Description ON Copy Track is made. Initial Setting OFF Copy Track is not made.
2. User Help When the user sends a User Help code according to the status of the copier fitted with the DT-103, this function transmits that status to the center. • Enter a 3-digit value from the 10-key pad (max. six codes). Note: To transmit the User Help code, enter the value and press "Data Send" on the User Mode screen. 3. Max. Copy Sets Used to turn "ON" or "OFF" the maximum number setting of copy cycles.
5 TECH. REP. MODE • This mode is used by the Tech. Rep. to set, confirm, adjust and/or register various Tech. Rep. functions. 5-1. Tech. Rep. Mode Menu Screen Tech. Rep. Mode Menu Exit Function ROM Version Tech. Rep. Choice RD Mode System Input ADF Check Counter Level History I/O Check Machine status Last Trouble Admin. Mode 1134S034CA 5-2. Tech. Rep. Mode Setting Procedure 1. Place the copier in the Tech. Rep.
5-3. Settings in the Tech. Rep. Mode 1. Function • Used to adjust/confirm various Tech. Rep. functions. Function Menu F1 PaperPassage F7 Orig. Sensor F2 Drum/Trans F8 ATDC Adiust F3 Exp. Lamp FD Paper Width F4 HV Separator FE Blade Priming F5 Optimum & AE F6 Edit Ref. Adj 1075S003CB 1-1. Function mode setting procedure 1. Select "Function". 2. Select the function mode to be adjusted/confirmed. 3. Press the Start Key to start the operation of the corresponding mode. 4.
● F4 (HV Separator) Used to confirm the output of the High Voltage Unit (HV) for the Paper Separator Corona. (For factory setting) • This function runs for 60 seconds. • This function runs until the Stop Key is pressed. ● F5 (Optimum & AE) Used to make Vg level adjustment, manual optimum exposure adjustment, and automatic AE Sensor optimum exposure adjustment. • This function runs for 30 seconds. • This function runs until the Stop Key is pressed. ● F6 (Edit Ref.
1-3.
2. Tech. Rep. Choice • Used by the Tech. Rep. to make adjustments and confirmations of various Tech. Rep. functions. Tech. Rep. Choice Tech. Rep. Choice Enter Tech. Rep. Choice 1 Plug-In Counter Size Counter Total Counter Maintenance Call Copy Kit Counter Toner Empty Stop BackUp Auto Paper Config.
● Size Counter Used to select the paper size counted by the Paper Size Counter. Screen Display Initial Setting Screen Display No ∗ A3 Initial Setting Screen Display A3/B4 No A3/B4 11 × 17 Initial Setting Screen Display Initial Setting ∗ 11×14+LGR 11×14+LGR Note: For the counting methods, see the Count-Up List given below. ● Total Counter Used to select the counting method of each Counter according to the paper size and copy mode.
• When the D-102 is fitted to the copier, set the Tech. Rep. Choice Mode as follows according to the count-up mode of the D-102. Tech. Rep.
● Copy Kit Counter Used to select "Yes" or "No" for "Copy Kit" counting by the Consumables Counter or to "Enable" or "Disable" a copy cycle when the Counter reaches the set count. Screen Display No Description Initial Setting ∗ No count Mode 1 Copy enabled when the Counter reaches the set count. Mode 2 Copy disabled when the Counter reaches the set count. Note: Select Mode 1 or 2 to start the Copy Kit Counter counting.
● Sorter Trouble Used to select "Enable Copy" or "Disable Copy" when a malfunction of the paper exit option is detected. Screen Display Description Initial Setting Enable Copy Copy is enabled after detection of a malfunction. Disable Copy Copy is disabled after detection of a malfunction. ∗ Note: If a malfunction has already been detected when "Enable Copy" is selected, a warning is displayed only when the malfunctioning Mode detected is selected, and the Mode selected is not accepted.
● Loop Adjust (Man/LCT) Used to adjust the loop length (before the Synchronizing Roller) of the paper fed manually or from the paper feed option. Code Loop Length Initial Setting Code Loop Length 47 Approx. 4 mm 51 Approx. 12 mm 48 Approx. 6 mm 52 Approx. 14 mm 49 Approx. 8 mm 53 Approx. 16 mm 50 Approx. 10 mm Initial Setting ∗ ● Exp. Lamp Manual Adj. Used to make fine-adjustment of the Lamp voltage in the Manual Exposure mode.
3. System Setting • This mode is used to set the fixed zoom ratio, paper size input, marketing area and Plug-In Counter, or to advance the Drum Charge Corona Wire. System Input Menu Change Fixed Zoom Ratio Paper Size Input Marketing Area Plug-In Counter Charge wire cleaning Telephone # Input 1075S005CB 3-1. System Setting setting procedure 1. Select "System Setting". 2. Select the mode to be set. 3. Make the various settings according to the screens selected. 3-2.
● Marketing Area Used to change the paper size/fixed zoom ratio according to the marketing area. Screen Display Factory Setting Screen Display Factory Setting MC U.S.A Area Europe Area Others Area MJ MH Note: When the marketing area has been changed, the copier must be momory cleared. ● Plug-In Counter Used to disable or enable the copier depending on whether or not a Plug-In Counter or Magnetic Card is used when the copier is equipped with a Plug-In Counter or D-102.
4. Counter • This mode is used by the Tech. Rep. to set the counts of the Maintenance Counter and Consumables Counter or to show the counts of various counters. Counter Menu Paper Port/Option Jam Consumable Retry Auto CPU Reset Trouble Maintenance 1134S040CA 4-1. Counter setting procedure 1. Select "Counter". 2. Select the mode to be set/displayed. 3. Set or clear the count according to the screen selected. 4-2.
● Jam Counts the number of jams that occurs in the copier or entire system (MCBJ) and per section.
● Retry Counts the number of feed retries which are made when no paper reaches the Paper Take-Up Sensor in a given period of time in order to reduce misfeeds (jams) caused by slip, etc. of the Paper Take-Up Roll.
Screen Display Code Description Location C0070/1 Main Hopper Motor Main Hopper Toner Replenishing Motor rotation malfunction C0072/3 Sub Hopper Motor Sub Hopper Toner Replenishing Motor rotation malfunction C0080 Sync. Roller Motor Synchronizing Motor rotation malfunction C0100 CH Wire Cleaning PC Drum CH Wire Cleaning malfunction C0110 Trans. Wire Cleaning Image Tran.
Screen Display Code Description Location C0660 Scanner System Scanner load malfunction C06FX Scanner Interface Scanner Interface malfunction C090X 3rd Drawer Not count C091X 2nd Drawer 2nd Drawer malfunction C092X 1st Drawer 1st Drawer malfunction 4th Drawer Not count C0990-6 C095X LCC Main-Tray 3rd Drawer malfunction C0998-d LCC Shift System 3rd Drawer malfunction Screen Display Code Description Location C09CX LCT C-302 malfunction C0E0X Main Er
Screen Display Code C0F66 Description Location Paper Size Sensor Paper Size Sensor malfunction C0F79 Paper Empty Sensor 3rd Drawer Paper Empty Sensor malfunction C0FE/FX Orig. Size Det. Sens.
● Maintenance Set the next maintenance time based on copy cycle count. The count is increased by 1 per copy cycle. When the count reaches the setting, the Maintenance Call message and inspection code "M1" are displayed together. Note: The Maintenance Call message is displayed or not displayed depending on the setting of "Maintenance Call" in the Tech. Rep. Choice mode. Note: If the Maintenance Call message is displayed, the copy cycle can be continued and copy is not disabled.
● Port/Option Counts the frequency of use per port/option as reference data to be used by the Tech. Rep. in maintenance.
● Consumables Set the life of the consumables. When the count which increases one per copy cycle reaches the set count, the Maintenance Call message and a code are displayed. Note: Code display Toner Collect: Code "M2", Web Roller: Code "M3" Copy Kit: Code "M4" Note: Toner Collect should not be set higher than 400 K, Web Roller should not be set higher than 200 K, The Tech. Rep. Call message is displayed when these two respective settings are reached, Copying is inhibited after 5000 more copies are made.
- Maintenance Code Display Resetting Procedures - • Code: M1 Displayed to indicate that the count of any Maintenance Counter has reached the set count. 1. Select "Count" in the Tech. Rep. mode and access the"Maintenance" screen. 2. Select the count that has reached the set count and press the Clear Key to clear the count. • Code: M2 Displayed to indicate that the Toner Collect count of the Consumables Counter has reached the set count. 1.
5. I/O Check • This mode is used to check the Sensors and Boards at the occurrence of a jam or malfunction to determine the location of the fault. I/O Check Menu IC Port Data Check Paper Path Sensors Check Memory Check Controller Board Check Panel Indication Check 1134S041CA 5-1. I/O Check setting procedure 1. Select "I/O Check". 2. Select the mode to be checked. 3. Check the mode and change data according to the screen selected. 5-2.
IC No. PWB-A (IC1A) PWB-A (IC4A) Data Port 7 6 5 4 P47-0 P57-0 P67-0 P87-0 1 H 1 1 1 1 1 1 0 1 L 1 1 1 APA7-0 APB7-0 APC7-0 BPA7-0 H H H H 1 0 0 1 1 1 1 1 L H H H ∗ / ∗ 1 0 0 ∗ ∗ 0 1 0 H H L 1 ∗ H 3 2 ∗ 1 1 ∗ L 1 L 1 L L L L 1 1 ∗ H H L H H 3 2 1 0 1 L 1 0 L 1 Note: "∗" indicates either an unused or non-existing port. IC No.
IC No. Data Port 7 PWB-A (IC5A) BPC7-0 φ3-0 PWB-F (4) (IC1F) PB3-0/PA3-0 PD3-0/PC3-0 PF3-0/PE3-0 PH3-0/PG3-0 PB3-0/PA3-0 PD3-0/PC3-0 6 5 4 / H H H H ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ 3 2 1 0 ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ 1 1 3 2 1 0 H L H H 1 1 1 1 ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ Note: 4: Japan Only IC No.
IC No. Data Port 3 2 1 0 0 0 0 1 0 0 / 3 2 1 0 0 0 L H 0 1 0 0 PWB-F (3MC) (IC1F) PF3-0/PE3-0 PH3-0/PG3-0 ∗ ∗ PWB-F (3MC) (IC2F) PB3-0/PA3-0 PD3-0/PC3-0 PF3-0/PE3-0 PH3-0/PG3-0 L H H H L H H H L ∗ ∗ L L L L L H PWB-G (Dup) (IC1G) PB3-0/PA3-0 PD3-0/PC3-0 1 1 ∗ ∗ ∗ ∗ ∗ ∗ 1 1 1 1 L H H H L ∗ ∗ H H H L H L H H H L H H Note: Dup: Duplex Unit IC No.
● Paper Path Sensors Check The passage of paper causes the states of the Paper Path Sensors to be switched from "1 to 0" or "0 to 1" in order of paper passage. This allows checking whether the Sensors are "normal" or "faulty".
● Memory Check Used to check whether the ROM/RAM on the PWB-B Board (MSC Board) is accessed properly or not. Check Result Normal Faulty Screen Display Action "Memory check completed. Turn the Power Switch OFF, and then ON. The Power Switch must be turned OFF and ON. "ROM ERROR" Change PWB-B (IC2B). "Message ROM ERROR" Change PWB-B (IC4B). "RAM ERROR" Change the PWB-B Board. "VRAM ERROR" Change the PWB-B Board. "LCDTC ERROR" Change the PWB-B Board.
6. Last Trouble • Displays the copy mode in which the most recent malfunction occurred. Item Copy paper Description APS, paper size Zoom ratio AMS, zoom ratio Image density AE, Manual Exposure Copy cycle Copy cycle Original copy mode 1-sided → 2-sided, 2-sided → 2-sided, etc.
7. ROM Version • Displays the current ROM version loaded in the system.
8. RD Mode • Select this mode when the copier is fitted with the DT-103. RD Mode Menu End of normal data trans. ID Code ******* Initial Transmission DT Setting Data Save Call Completion Data Load Counter Clear 1134S052CA • With this screen displayed, enter the ID Code from the 10-key pad (seven digits). 8-1. Settings in the RD mode ● DT Setting When the copier is fitted with the DT-103, make the necessary settings.
4. Press the "Next" key. 5. Select "Dial Mode" and set the Dial Mode with the "Change" key according to the type of the telephone line used. Pulse line P10/P20 Tone line Tone 6. Select "Auto Receive" and specify "Yes" or "No" using the"Change" key. Yes There is a DT-103 dedicated line. No There is no DT-103 dedicated line. Note: When there is no DT-103 dedicated line, specify "No". 7. Select "RAM Clear" and select "No" using the "Change" key. Yes To make setting again.
● Counter Clear Used to clear the Spare Counter to be cleared. RD Mode Menu SpareCounter Clear 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1134S055CA • Selecting the Counter to be cleared clears the selected Counter.
9. ADF Check/Setting • This mode is used to check the operation of the Automatic/Duplexing Document Feeder and to adjust the document stop position in each mode. ADF Check/Setting Menu Paper Passage & Input Check Output Check Doc. Stop Position Set 1134S050CA 9-1. ADF Check/Setting setting procedure 1. Select "ADF Check/Setting". 2. Select the mode to be checked/set. 3. Make the check or adjustment in the corresponding mode according to the screen selected.
9-2. Settings in the ADF Check/Setting mode ● Paper Passage & Input Check The results of the Paper Passage Check and Sensor Check of the document path in each mode are indicated by "1/0".
● Doc. Stop Position Set Used to adjust the document stop position in each mode. - 1-Sided Used to adjust the stop position of 1-sided documents when the Automatic/Duplexing Document Feeder is used on the copier. Setting Description Setting Description 43 Approx. −7 mm Initial Setting 51 Approx. +1 mm 44 Approx. −6 mm 52 Approx. +2 mm 45 Approx. −5 mm 53 Approx. +3 mm 46 Approx. −4 mm 54 Approx. +4 mm 47 Approx. −3 mm 55 Approx. +5 mm 48 Approx. −2 mm 56 Approx.
- 2in1Used to adjust the stop position of 2-in-1 documents when the Automatic/Duplexing Document Feeder is used on the copier. Setting Description Setting Description 43 Approx. −7 mm Initial Setting 51 Approx. +1 mm 44 Approx. −6 mm 52 Approx. +2 mm 45 Approx. −5 mm 53 Approx. +3 mm 46 Approx. −4 mm 54 Approx. +4 mm 47 Approx. −3 mm 55 Approx. +5 mm 48 Approx. −2 mm 56 Approx. +6 mm 49 Approx. −1 mm 57 Approx. +7 mm 50 Approx. 0 mm 58 Approx.
10. Level History • This mode is used to display and set various level operating values to the operating status of the machine. Screen Display Set ATDC Level Variable Range Increments Description 2 to 254 2 Reference value of ATDC control Target 1.0 to 9.0 (%) 0.5% Target ATDC level Correction 1.0 to 9.0 (%) 0.
11. Machine Status • This mode is used to display up to five codes of isolated malfunctions that have occurred. The following malfunctions are detected as isolated malfunctions.
12. Administrator Mode • This mode is used to set the administrator number in addition to the functions on "Menu Screen 6/6" in the User’s Choice mode. Administrator Mode Menu Select a function by pressing the key. Copy Track: OFF User Help: OFF Max. Copy Sets: Administrator # Input: 1134S044CA ● Copy Track ● User Help ● Max. Copy Sets ∗: For these functions, see "Menu Screen 6/6" in the User’s Choice Mode.
6 ADJUST MODE • This mode is used to adjust the optical components before shipment from the factory and must not be executed except when the PWB-R (RAM Board) has been changed. When the PWB-R has been changed, enter the factory settings indicated on the Label inside the Front Door. 6-1. Adjust Mode Screens Adjust Adjust Enter Adjust 1/2 BackUp Enter Adjust 2/2 A0 Lens Focus A1 Lens Full Size Position 50 50 A3 Feed Direction Mag.
6-3. Settings in the Adjust Mode ● Lens Focal Length Adjustment (A-0) Corrects the focal length of the Lens. Setting Description 49 Short focal length adjustment 50 Standard 51 Long focal length adjustment Initial Setting ∗ ● Lens Full Size Position Adjustment (A-1) Adjusts the magnification ratio in the crosswise direction by finely adjusting the Lens home position.
● Feeding Direction Magnification Ratio Adjustment (A-3) Adjusts the magnification ratio in the feeding direction by finely adjusting the scan speed.
● Lens Position Full Size Registration (A-4) Adjusts the leading edge for a full size copy by changing the engagement timing of the Synchronizing Roller.
● Lens Position Reduction Registration (A-5) Adjust the leading edge for a reduction copy by changing the engagement timing of the Synchronizing Roller.
● Book B Scan Registration (A-6) Adjust Book Scan B by changing the engagement timing of the Synchronizing Roller. Setting Description Setting Description 45 −5 pulses Initial Setting 51 +1 pulse 46 −4 pulses 52 +2 pulses 47 −3 pulses 53 +3 pulses 48 −2 pulses 54 +4 pulses 49 −1 pulse 55 +5 pulses 50 ±0 Initial Setting ∗ Note: Increments: Approx. 0.
● Leading Edge Erase Adjustment (A-12) Corrects the width of erase on the leading edge of an image by changing the ON timing of the Image Erase Lamp. Setting Description Setting Description 45 −5 mm Initial Setting 51 +1 mm 46 −4 mm 52 +2 mm 47 −3 mm 53 +3 mm 48 −2 mm 54 +4 mm 55 +5 mm 49 −1 mm 50 ±0 mm Initial Setting ∗ ● Trailing Edge Erase Adjustment (A-13) Corrects the width of erase on the trailing edge of an image by changing the ON timing of the Image Erase Lamp.
7 LIST OF SETTINGS TO BE MADE DUE TO PARTS REPLACEMENT Parts Changed Original Original RAM Board PC Drum Starter AIDC Sensor ATDC Sensor Setting Item Size Exposure Size Detecting Lamp Detecting Board Sensor Copy Mode Program O — — — — — — User’s Choice Mode O — — — — — — — — Tech. Rep.
Copyright 1994 MINOLTA CO., LTD Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA CO., LTD.
EP6000 TROUBLESHOOTING
CONTENTS 1 1 INTRODUCTION 1-1. 1-2. 1-3. 1-4. General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-1 How to Use This Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-1 Reading the Text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-1 Method for Checking the Control Parts with Loads . . . . . . . . T-2 2 2 PAPER TRANSPORT FAILURE 1. Paper Misfeed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONTENTS 2-4. C0040: Suction Fan Motor M18’s Failure to Turn . . . . . . . . . T-72 C0042: Toner Suction Fan Motor M20’s Failure to Turn C0043: Toner Suction Fan Motor M20 Turning at C0043:Abnormal Timing C004A: Optical Section Cooling Fan Motor M17’s Failure to C004A: Turn C004b: Optical Section Cooling Fan Motor M17 Turning at C0021: Abnormal Timing C004E: Power Supply Unit Cooling Fan Motor M29’s C004A: Failure to Turn C004F: Power Supply Unit Cooling Fan Motor M29 C004F: Turning at Abnormal Timing 2-5.
CONTENTS 2-13. C0511: Lower Fusing Roller Abnormally Low C0511: Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T-89 C0521: Lower Fusing Roller Abnormally High C0511: Temperature C0523: Lower Fusing Roller Thermistor TH2 Malfunction C0540: Fusing Roller Thermistor Loading Failure 2-14. C0600: Scanner Motor M11 Malfunction . . . . . . . . . . . . . . .
CONTENTS 2-20. C0998: Shifter Transfer Failure. . . . . . . . . . . . . . . . . . . . . . . T-106 C0999: Shifter Return Failure C099A: Shifter Return Failure C099b: Shifter Transfer Failure C099C: 3rd Drawer Shift Motor M28’s Failure to Trun 2-21. C0996: 3rd Drawer Lock Release Failure . . . . . . . . . . . . . . T-109 C0F79: Paper Empty Sensor Failure 2-22. C0d00: Duplex Unit Front/Rear Edge Guide Plates C0d00: Home Position Detection Failure . . . . . . . . . . . . . . .
1 INTRODUCTION 1-1. General Precautions 1. When servicing the copier with its covers removed, use utmost care to prevent your hands, clothing, and tools from being caught in revolving parts including the chains and gears. When servicing the copier with the Lower Rear Cover removed, be sure to install the jig. 2. Before attempting to replace parts and unplug connectors, make sure that the power cord of the copier has been unplugged from the wall outlet. 3.
1-4. Method for Checking the Control Parts with Loads To check the Control parts easier and safer, this copier allows the Technical Representative to determine whether a control part is fully operational and signals are input and output properly by changing or checking the I/O port data of the board IC with the copier in the standby state (including where a misfeed, malfunction or setting fault condition exists). Procedure 1.
Example The 1st Drawer Paper Take-Up Sensor PC6 is probably faulty when a misfeed occurs at the Paper Take-Up Section of the copier. 1) Remove the misfed paper. 2) From the circuit diagram accompanying the text, the port for the input signal indicating that PC6 is HIGH or LOW is identified as PA2 on PWB-F (IC2F). 1075C01TAA 3) Select "IC Port Data Check" of "I/O Check" in the Tech. Rep.
➀ 4) Make sure that the on-the-screen data of PA2 input port on PWB-F (IC2F) is " H " (sensor not blocked). 5) Move the Actuator of PC6 and block PC6 with paper, etc. 6) Return to the "I/O Check" menu screen, select "IC Port Data Check" again, call up the screen which contains the PA2 input port, and make sure that the data has changed from " H " to " L ".
Example The Manual Feed Paper Take-Up Clutch CL5 is probably faulty when a multi-bypass misfeed occurs. 1) Remove the misfed paper, and reset the misfeed. 2) From the circuit diagram accompanying the text, the port for the CL5 energization/deenergization output signal is identified as APA2 on PWB- A (IC5A). 1075C02TAA 3) Select "IC Port Data Check" of "I/O Check" in the Tech. Rep.
➀ 4) Make sure that the on-the-screen data of APA2 output port on PWB-A (IC5A) is "1" (CL5: deenergized). 5) Press the "Change" key on the screen to change the data from "1" to "0" and energize CL5 for approx. 5 seconds. Check if the clutch makes a sound or not to determine whether it is "normal" or "faulty". Normal: CL5 makes a sound. Faulty: CL5 does not make a sound. 6) If CL5 did not operate, make a "Board Check" in the Tech. Rep. mode.
— Port Check Screens — * The following screens are those in the standby state.
2 PAPER TRANSPORT FAILURE 1. Paper Misfeed When a paper misfeed occurs in the copier, the misfeed message, misfeed location, and paper location are displayed on the screen. 13 11 12 14 3 2 10 1 9 6 7 8 5 4 15 Blinking Misfeed location Lit Paper location 1075T110CA Blinking/Lit Misfeed/Paper Location Ref.
Transport Roller Sensor PC26 Duplex Unit Paper Take-Up Sensor PC40 Paper Leading Edge Sensor PC27 Manual Feed Paper Empty Sensor PC28 Paper Exit Sensor PC36 Turnover Feed Sensor PC37 Vertical Transport Sensor 1 PC10 Duplex Unit Paper Empty Sensor PC41 1st Drawer Paper Take-Up Sensor PC6 Duplex Unit Paper Entry Sensor PC38 Vertical transport Sensor 2 PC11 2nd Drawer Paper Take-Up Sensor PC7 Duplex Unit Turnover Path Sensor PC39 Vertical Transport Sensor 3 PC12 3rd Dra
2. Types of Misfeed Detection and Detection Timings Type Detection Timing The Vertical Transport Sensor 1 PC10 is not blocked ( L ) approx. 2.038 second after the 1st Paper take-up Drawer Paper Take-Up Clutch failure detection CL1 is energized. Note: This also applies to the 2nd and 3rd Drawers.
Type Bypass paper take-up failure detection Detection Timing The Transport Roller Sensor PC26 is not blocked ( L ) approx. 2.08 second after the Manual Feed Paper Take-Up Clutch CL5 is energized. ON CL5 OFF Approx. 2.08 sec H PC26 L 1075T100CB Type Detection Timing H TRON Trailing edge detection by Transport Roller Sensor PC26 PC26 is not unblocked ( H ) "T" seconds (Which depends on the Paper Size) after the TRON signal is input.
Type Detection Timing TRON Leading edge detection by Turnover Feed Sensor PC37 H PC37 is not blocked ( L ) approx. 1.92 seconds after the TRON signal is input. L Approx. 0.8 sec H PC37 L 1075T106CA H Trailing edge detection by Turnover Feed Sensor PC37 PC37 is not unblocked ( H ) approx. 1.98 seconds after the Paper Leading Edge Sensor PC27 is unblocked ( H ). PC27 L Approx. 1.
3. Misfeed Clearing Procedures 3-1.
Symptom Step • Paper is not taken up at all. 1 • Paper is at a stop before the Vertical Transport Sensor. Check Item Does the paper being used meet product specifications? Result NO YES Change the paper. Instruct the user on the storage of paper.
Symptom Step • Paper is at a Check Item When the 2nd Drawer is used Check the operation of Paper Take-Up Clutch CL2. stop before the Vertical Transport Sensor. Result Action 1) Remove the misfed paper and reset the misfeed. 2) Select "IC Port Data Check". 1 3) Is the data of BPC5 on PWB-A (IC4A) "1"? (See the 2/8 screen on T-7.) 4) By pressing the "Change" key to change the data from "1" to "0", does CL2 operate? (Check that CL2 makes a sound.
Symptom Step • Paper is at a stop in the Vertical Transport Section. Check Item Result 1 Are the Vertical Transport Rollers deformed, worn, or dirty with paper dust? YES 2 Is the Paper Take-Up or Vertical Transport Guide Plate deformed or dirty? YES 3 Does Vertical Transport Motor M2 rotate when the Start Key is turned ON? When the 1st Drawer is used Check 1st Drawer Paper Take-Up Sensor PC6 Action Clean or change the Vertical Transport Rollers. Clean, correct, or change.
Symptom Step • Paper is at a stop in the Vertical Transport Section. Check Item Result Action When the 2nd Drawer is used Check the 2nd Drawer Paper Take-Up Sensor PC7. 1) Remove the misfed paper. 2) Select "IC Port Data Check". 1 3) Is the data of PE2 on PWB-F (IC2F) " H ". (See the 5/8 or 6/8 screen on T-7.) NO 4) Operate the Actuator to block PC7. 5) Return to the "I/O Check" menu screen and select "IC Port Data Check" again.
Symptom Step • Paper is at a Check Item Check the Vertical Transport Sensor 3 PC12. stop in the Vertical Transport Section. Result Action 1) Remove the misfed paper. 2) Select "IC Port Data Check". 2 3) Is the data of PG3 on PWB-F (IC2F) " H ". (See the 5/8 or 6/8 screen on T-7.) NO 4) Operate the Actuator to block PC12. 5) Return to the "I/O Check" menu screen and select "IC Port Data Check" again.
3-2.
Symptom • Paper is at a stop in the Transport Roller Section. Step Check Item 1 Are the Transport Rollers deformed, worn, or dirty with paper dust? 2 Does the Transport Motor M3 rotate when the Start Key is turned ON? Check the Transport Roller Sensor PC26. Result YES Action Clean or change. YES Check for overload. NO Change PWB-F, PWB-A or M3. 1) Remove the misfed paper. 2) Select "IC Port Data Check".
Symptom • Paper is at a stop near the PC Drum. Step Result Action 1 Is the Pre-Image Transfer Guide Plate deformed or dirty? YES Clean, correct or change the Guide Plate. 2 Are the Image Transfer/Paper Separator Corona Wires dirty or deteriorated? YES Clean or change the Corona Wires. 3 Is the Paper Guide above the Paper Separator Corona dirty or deformed? YES Clean or change the Paper Guide.
Symptom • Paper is at a stop on the Suction Belts. Step 1 Check Item When the Main Drive Motor is run, do the Suction Belts turn? Check whether the Suction Fan Motor M18 is switched from half speed to full speed when the Start Key is turned ON. Result NO Action Check the drive gear and timing belt. 1) Remove the misfed paper and reset the misfeed. 2) Select "IC Port Data Check". 2 3) Is the data of APA1 on PWB-A (IC5A) "1" when M18 is running at half speed? (See the 2/8 screen on T-7.
3-3.
Symptom Step Check Item Result Action 1 Is the paper fed out of the copier properly when it is taken up and fed in from the copier drawer? NO Refer to the section on Copier Take-Up Misfeed. 2 Is the Manual Feed indicator displayed on the screen when a sheet of paper is placed on the Multi Bypass Table. YES • Paper is not taken up at all. Check Manual Feed Paper Empty Sensor PC28. To Step 4. 1) Remove the misfed paper.
Symptom Step • Paper is not Check Item Result Action Check the operation of Manual Feed Paper Pick-Up Solenoid SL9. taken up at all. 1) Remove the misfed paper and reset the misfeed. 2) Select "IC Port Data Check". 6 3) Is the data of APA6 on PWB-A (IC5A) "1"? (See the 2/8 screen on T-7.
3-4.
Symptom Step • Paper is at a stop before the Fusing Roller. • Paper is at a stop in the Fusing Roller Section. 1 Check Item Is the Fusing Guide Plate dirty or deformed? Result YES 2 Refer to Section 3-2 "Transport/Separator Misfeed" and check the Suction Fan Motor M18.
3-5.
Symptom Step • Paper is at a Check Item Result Action Check the operation of the Exit/Duplex Switching Solenoid SL1. stop in the Exit Section. 1) Remove the misfed paper and reset the misfeed. 2) Select "IC Port Data Check". 1 3) Is the data of BPB1 on PWB-A (IC4A) "1"? (See the 2/8 screen on T-7.) 4) By pressing the "Change" key to change the data from "1" to "0", does SL1 operate? (Make sure that SL1 makes a sound.
Symptom Step • Paper is at a stop in the Turnover Section of the Duplex Unit. 1 2 Check Item Result Action Refer to Step 1 above, run Duplex Unit Drive Motor M7, and check the operations of the Paddle Roller, Slip Roller and Duplex Unit Drive Connection.
Symptom • The leading edge of the paper is at a stop inside the Duplex Unit. Step 1 Check Item Is the Paper Guide Mylar dirty or deformed? Check the Duplex Unit Paper Entry Sensor PC38. Result YES Action Clean or change the Mylar. 1) Remove the misfed paper. 2) Select "IC Port Data Check". 2 3) Is the data of PC1 on PWB-G (IC1G) " H "? (See the 6/8 screen on T-7.) NO 4) Operate the Actuator to block PC38.
3-6.
Symptom Step • Paper is not taken up at all. 1 Check Item Result Are the Take-Up Roll, Feed Roll and Separator Roll deformed, worn, or dirty with paper dust? Action Clean or change the Rolls. YES Check the operation of the Duplex Unit Paper Pick-Up Solenoid SL4. 1) Remove the misfed paper and reset the misfeed. 2) Select "IC Port Data Check". 2 3) Is the data of PB2 on PWB-G (IC1G) "1"? (See the 6/8 screen on T-7.
3 MALFUNCTION The copier CPU has a function to self-diagnose the copier conditions. On detection of a malfunction, the corresponding malfunction name, location and definition codes are shown on the Touch Panel of the copier together with a technical representative call message. C0 ∗∗∗ Malfunction definition code Malfunction location code Malfunction name code • Reset malfunctions and isolation malfunctions by the following procedures.
1. Detection Timing • The codes preceded by ∗ apply to isolation malfunctions. Copier-related malfunctions C00 ∗∗ (Drive system malfunctions) * Code Description C0000 Fusing Motor M6’s failure to turn Detection Timing The Fusing Motor Lock signal remains HIGH for a continuous 1.2-second period after M6 has been energized. ON M6 Fusing Motor Lock Signal OFF H L 1.
C00 ∗∗ (Drive system malfunctions) * Code Description C0020 Paper Take-Up Motor M1’s failure to turn Detection Timing The Paper Take-Up Motor Lock signal remains HIGH for a continuous 1-second period after M1 has been energized. ON M1 OFF H Paper Take-Up Motor Lock Signal L 1 sec C0021 Paper Take-Up Motor M1 turning at abnormal timing 1075T117CC The Paper Take-Up Motor Lock signal remains LOW for a continuous 1.5-second period after M1 has been deenergized.
C00 ∗∗ (Drive system malfunctions) * Code Description C004A Optical Section Cooling Fan Motor M17’s failure to turn Detection Timing The Optical Section Cooling Fan Motor Lock signal remains HIGH for a continuous 2-second period after M17 has been energized.
C00 ∗∗ (Drive system malfunctions) * Code Description C004d Fusing Unit Ventilation Fan Motor M8 turning at abnormal timing Detection Timing The Fusing Ventilation Fan Motor Lock signal remains LOW for a continuous 20-second period after M8 has been deenergized.
C00 ∗∗ (Drive system malfunctions) * Code Description Detection Timing The output from PC30 does not go Low within 10 seconds after it has gone HIGH following the energization of M14. ON M14 OFF 10 sec H PC30 L 1075T129CA C0071 Main Hopper Toner Replenishing Motor M14 turning at abnormal timing The PC30 output goes HIGH 2 seconds after M14 has been deenergized.
C01 ∗∗ (PC Drum Charge, Image Transfer/Paper Separator Corona cleaning malfunctions) * Code Description C0110 Image Transfer/Paper Separator Charge Wire Cleaning Motor M22’s failure to turn Detection Timing The output from the Transfer Separator Wire Cleaner Home Position Sensor PC55 does not go HIGH 7 seconds after M22 has started forward rotation (cleaning).
C03 ∗∗ (Control Board/Harness malfunctions) • The copier performs a self-diagnostic sequence to determine if the microprocessor outputs a signal to each of the IC ports on the Master Board PWB-A properly. It is intended to detect the following malfunctions (C03**). If the microprocessor fails to output any of these signals or if any of the electronic components on the board (driver IC, etc.
∗ Code Description (Input or output signal fault) Port on Master Board C0321 Exit/Duplex Switching Solenoid (SL1) REM IC4A BPB1 C0322 Developing Bias REM IC5A φ2 C0323 PC Drum Charge REM IC5A φ3 C0326 Manual Feed Paper Take-Up IC5A APA2 Clutch (CL5) REM C0329 Fusing Motor (M6) REM Detection Timing • When the "Board Check" of "I/O Check" in the Tech. Rep. Mode is executed. • When the "Board Check" of "I/O Check" IC5A APA5 in the Tech. Rep. Mode is executed.
∗ Code Description (Input or output signal fault) Port on Master Board C0341 Synchronizing Motor (M4) REM C0342 Cleaning Web Winding Motor IC4A APC6 (M16) REM C0343 Pre-Image Transfer Erase Lamp (LA4) REM IC4A BPB4 C0344 Fusing Unit Ventilation Fan Motor (M8) REM IC4A BPB0 C0345 Pre-Cleaning Erase Lamp (LA5) REM IC4A BPB3 IC5A BPA3 Detection Timing • When the "Board Check" of "I/O Check" in the Tech. Rep. Mode is executed. • When the "Board Check" of "I/O Check" in the Tech. Rep.
C04 ∗∗ (Exposure Lamp malfunctions) ∗ Code Description C0400 Exposure Lamp LA1’s failure to turn ON Detection Timing The output from the AE Sensor Board PWB-H has not become 4.27V or less from when LA1 turns ON and the Scanner starts a scan motion until when the Image Leading Edge signal (BASE) turns ON (goes LOW). LA1 ON OFF H L BASE PWB-H 4.27V 1075T137CB C0410 Exposure Lamp LA1 turning ON at abnormal timing The output from PWB-H remains 3.9V or less for a continuous 0.
C05 ∗∗ (Fusing Unit malfunctions) ∗ Code Description Detection Timing C0520 Abnormally high fusing temperature (Upper Fusing Heater Lamp turning ON at abnormal timing) The surface temperature of the Upper Fusing Roller remains 210°C or more for a continuous 5-second period after the copier has warmed up.
C06 ∗∗ (Optical Section malfunctions) ∗ Code Description C0601 SCP Board PWB-J malfunction Detection Timing With no encoder pulses input to PWB-J for 100 to 130 msec. while M11 is turning, the Forward/Backward Rotation signal from PWB-J goes from LOW to HIGH, or vice versa, when an attempt is made to turn M11 backward.
C06 ∗∗ (Optical Section malfunctions) ∗ Code Description Detection Timing C06F0 SHOME signal failure (SHOME does not go LOW) • When the Scanner is at other than the home position, the SHOME signal does not go LOW 5 seconds after the Power Switch has been turned ON. • The SHOME signal does not go LOW 5 seconds after the SCEND signal has gone from LOW to HIGH.
C09 ∗∗ (Paper Take-Up Section malfunctions) * * Code Description Detection Timing C0900 3rd Drawer Lift-Up failure • The 3rd Drawer Lift-Up Sensor PC16 is not blocked ( L ) 5 seconds after the 3rd Drawer Paper Lift-Up Motor M25 has started rotating forward. • The 3rd Drawer Lift-Up Motor Pulse Sensor PC58 detects 75 pulses after M25 had started rotating forward.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0910 2nd Drawer Lift-Up failure Description Detection Timing • The 2nd Drawer Lift-Up Sensor PC15 is not blocked ( L ) 5 seconds after the 2nd Drawer Lift-Up Motor M24 has started rotating forward. • The 2nd Drawer Lift-Up Motor Pulse Sensor PC57 detects 75 pulses after M24 had started rotating forward.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0912 2nd Drawer (Inch Lower-Down failure Areas) 2nd Drawer Lock failure Description Detection Timing • The 2nd Drawer Lower Limit Position Sensor PC50 is not blocked ( L ) 5 seconds after the 2nd Drawer Lift-Up Motor M24 has started rotating backward. • The 2nd Drawer Lift-Up Motor Pulse Sensor PC57 detects 75 pulses after M24 had started rotating backward.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0914 2nd Drawer Lift-Up Motor M24’s failure to turn Description Detection Timing • The 2nd Drawer Lift-Up Motor Pulse Sensor PC57 detects no pulses 500 msec. after M24 had been energized. • The 2nd Drawer Lift-Up Motor Pulse Sensor PC57 detects no pulses for 200 msec. while M24 was being energized.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0922 1st Drawer Lower-Down (Inch failure Areas) 1st Drawer Lock failure Description Detection Timing • The 1st Drawer Lower Limit Position Sensor PC49 is not blocked ( L ) 5 seconds after the 1st Drawer Lift-Up Motor M23 has started rotating backward. • The 1st Drawer Lift-Up Motor Pulse Sensor PC56 detects 75 pulses after M23 had started rotating backward.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0924 1st Drawer Lift-Up Motor M23’s failure to turn Description Detection Timing • The 1st Drawer Lift-Up Motor Pulse Sensor PC56 detects no pulses 500 msec. after M23 had been energized. • The 1st Drawer Lift-Up Motor Pulse Sensor PC56 detects no pulses for 200 msec. while M23 was being energized.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0990 Main Tray upward motion failure Description Detection Timing The 3rd Drawer Lift-Up Sensor PC16 is not blocked ( L ) 10 seconds after the 3rd Drawer Elevator Motor M27 has started rotating forward (upward motion), or the 3rd Drawer Elevator Motor Pulse Sensor PC44 detects 120 pulses after M27 had started rotating forward (upward motion). Forward rotation M27 Backward rotation 10sec.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0992 Main Tray downward motion failure Description Detection Timing 3rd Drawer Tray Lower Position Sensor PC46 is not blocked ( L ) 10 seconds after M27 has started rotating backward (downward motion), or PC44 detects 120 pulses after M27 has started rotating backward (downward motion). Forward rotation M27 Backward rotation 10sec.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C0998 Shifter transfer failure Description Detection Timing The 3rd Drawer Shifter Return Position Sensor PC48 does not detect the second trailing ( H → L ) edge 10 seconds after the 3rd Drawer Shift Motor M28 has started forward rotation (right shift), or the 3rd Drawer Shift Motor Pulse Sensor PC45 detects 125 pulses after M28 has started forward rotation (right shift). Forward rotation M27 Backward rotation 10 sec.
C09 ∗∗ (Paper Take-Up Section malfunctions) * Code * C099b Shifter transfer failure Description Detection Timing PC47 cannot detect a leading ( L → H ) edge though PC45 has detected 10 pulses after M28 has started forward rotation (right shift). Foward rotation M28 Backward rotation H PC47 L 10 sec or more H PC45 L 1075T168CB * C099c 3rd Drawer Shift Motor’s failure to turn The 3rd Drawer Shift Motor Pulse Sensor PC45 detects no pulses when 200 msec. (500 msec.
C0d ∗∗ (Duplex Unit malfunctions) ∗ ∗ Code Description C0d00 Duplex Unit Front/Rear Edge Guide Plates home position detection failure Detection Timing This position is only detected during initial operation. (When the Power Switch is turned ON, the Duplex Unit is loaded, Duplex Unit take- up ends, or the Duplex Unit is unloaded). This failure occurs when the Front/Rear Edge Guide Plate Home Position Sensor PC42 is not blocked ( L ) within 2.37 seconds after the initial operation is started.
C0d ∗∗ (Duplex Unit malfunctions) ∗ ∗ Code Description C0d51 Duplex Unit Drive Motor M7 turning at abnormal timing Detection Timing The Motor Lock signal ( L ) is detected for a continuous 1-second period 100 msec. after M7 has been deenergized. (Detected any time during the stop of the Motor.) ON M7 OFF Motor Lock 100msec. H 1 sec.
C0F ∗∗ (Sensor malfunctions) ∗ ∗ Code Description C0F02 Original Size Detecting Board UN2 malfunction Detection Timing 1) The Busy signal does not go LOW within approx. 800 msec. after the Initial signal has gone LOW, or undefined data is input to the Master CPU. 2) If 1 is checked okay, the Busy signal goes HIGH within approx. 200 msec. 3) If both 1 and 2 are checked okay, the Busy signal does not go HIGH within approx. 400 msec.
C0F ∗∗ (Sensor malfunctions) ∗ Code Description C0F10 AE Sensor Board PWB-H malfunction Detection Timing • The output from PWB-H remains approx. 0.18V or less for a continuous 2-second period when LA1 is OFF, PC1 output is LOW, or S7 output is LOW (i.e. the Original Cover is closed). • The output from PWB-H is less than 1.8V when the gain of the AE Sensor is 100%. • The output from PWB-H is 1.8V or more when the gain of the AE Sensor is 0%.
C0F ∗∗ (Sensor malfunctions) ∗ ∗ Code Description Detection Timing C0F23 AIDC Sensor UN9 exposure correction failure The AIDC Sensor output voltage does not become 1.6 ±0.2V even after the eighth correction sequence. C0F30 ATDC Sensor UN8 malfunction The UN8 output remains approx. 0.18V or less or approx. 4.52V or more for a continuous 3-second period while M1 remains energized.
Code Description Detection Timing and Sensor Layout C0FE1 Original Size Detecting Sensor ➊ failure After having read the output data from UN3 to UN7, UN2 determines that there is a failure.
∗ Code Description Sensor Layout C0FF0 Original Size Detecting Sensor ➎ failure C0FF1 Original Size Detecting Sensors ➊ and ➎ failure C0FF2 Original Size Detecting Sensors ➋ and ➎ failure C0FF3 Original Size Detecting Sensors ➊, ➋, and ➎ failure Metric Areas • ➊: UN5, ➋: UN4, ➌: UN3 (option), ➍: UN6, ➎: UN7 (option) ∗ UN3 and UN7 are standard for Hong Kong area.
C09C∗ (C-302 malfunctions) ∗ ∗ Code Description Detection Timing C09C0 Elevator ascent failure • The Paper Raised Position Sensor LEV SEN is not blocked ( L ) 125 seconds after the Elevator Motor (H MOT) has been energized. • LEV SEN is not blocked ( L ) 3 seconds after H MOT has been energized and the Paper Empty Sensor EMP SEN unblocked ( H ). ∗ C09C1 Elevator descent failure • The Paper Lowered Position Sensor LOW SEN is not blocked ( L ) 12 seconds after H MOT has been energized.
2. Troubleshooting Procedures 2-1.
Step 1 Check Item Result Is the malfunction code C0000? NO Check the M6 REM signal as described below: 1) Reset the malfunction. 2 Action • To Step 5. 2) Select "IC Port Data Check". 3) By changing the data of APA5 on PWB-A (IC5A) from "1" to "0", does M6 rotate? (See the 2/8 screen on T-7.) Check the M6 Lock signal as described below: • To Step 4. NO 1) Select "IC Port Data Check". 3 2) Is the data of APB7 on PWB-A (IC5A) " L "? (See the 2/8 screen on T-7.
2-2.
Step 1 Check Item Result Is the malfunction code C0010? NO Check the M5 REM signal as described below: 1) Reset the malfunction. 2 Action • To Step 5. 2) Select "IC Port Data Check". 3) By changing the data of APA4 on PWB-A (IC5A) from "1" to "0", does M5 rotate? (See the 2/8 screen on T-7.) Check the M5 Lock signal as described below: • To Step 4. NO 1) Select "IC Port Data Check". 3 2) Is the data of APB4 on PWB-A (IC5A) " L "? (See the 2/8 screen on T-7.
2-3.
Step 1 Check Item Result Is the malfunction code C0020? NO Check the M1 REM signal as described below: 1) Reset the malfunction. 2 Action • To Step 5. 2) Select "IC Port Data Check". 3) By changing the data of APA0 on PWB-A (IC5A) from "1" to "0", does M1 rotate? (See the 2/8 screen on T-7.) Check the M1 Lock signal as described below: • To Step 4. NO 1) Select "IC Port Data Check". 3 2) Is the data of APC4 on PWB-A (IC5A) " L "? (See the 2/8 screen on T-7.
2-4.
∗ Failure to Turn (C0040/C0042/C004A/C004E) Step Check Item Check the Motor REM signal as described below: 1) Reset the malfunction. 1 Result Action 2) Select "IC Port Data Check". 3) By changing the data of APA1 on PWB-A (IC5A) from "1" to "0", does the Motor corresponding to the malfunction code rotate? (See the 2/8 screen on T-7.) By making a "Board Check" in "I/O Check", is the malfunction code displayed? • To Step 3. NO YES • Change PWB-A. • Check the fan for overload.
2-5.
Step 1 Check Item Result Is the malfunction code C004c? NO Check the M8/M19 REM signal as described below: 1) Reset the malfunction. Action • To Step 5. 2) Select "IC Port Data Check". 2 3) By changing the data of BPB0 on PWB-A (IC4A) from "1" to "0", does M8 rotate? Also, by changing the data of APA1 on PWB-A (IC5A) from "1" to "0", does M19 rotate? (See the 2/8 screen on T-7.) Check the M8/M19 Lock signal as described below: • To Step 4.
2-6.
∗ C0070, C0071 Step Check Item Result Action Do as described below to check whether M14 rotates: 1 1) Open the Upper Front Door and turn the Toner Bottle slightly toward you. 2) Turn the Power Switch OFF and ON. 2 3 NO Does the Toner Bottle stop after turning? YES • Change PWB-A. NO • Change PC30. Do as in Step 1 again. Is the voltage across PJ4A-1 on PWB-A and GND DC0V? Do as described below to check whether power is supplied to M14: 4 • To Step 3.
2-7.
Step 1 Check Item Result Is the voltage across CN30 (2P) Pin 2 and GND DC36V? Are PJ3A and CN29 securely plugged into PWB-A? NO • Change PWB-A. If the YES 2 NO T-79 Action • Check PU3 and PWB-C. malfunction occurs again, change PWB-T. • Plug in PJ3A and CN29 securely.
2-8.
∗ The procedures for C0100 and C0110 are the same. The parts for C0110 are indicated in the parentheses. Step 1 Check Item Result Is the Cleaner Holder at a stop in the home position? (In the back part of the Corona) Check PC54 (PC55) as described below: 1) Select "IC Port Data Check". 2 YES Action • To Step 4. • Check the operation of the 2) Is the data of BPB4 (BPB3) on PWB-A (IC5A) " H "? (See the 2/8 screen on T-7.
2-9.
∗ C0200 Step Check Item Result 1 Is the PC Drum Charge Corona installed properly? 2 Are the PC Drum Charge Corona wires dirty or have they snapped? 3 Is "C0200" shown even when PJ70 is unplugged from PC Drum Charge HV HV1? NO YES YES NO Action • Install the PC Drum Charge Corona properly. • Clean or replace the corona wires. • Replace PWB-A. • Replace HV1.
2-10. C03** (Master Board, Harness malfunction) ∗ C0300 to C0334D Step 1 Action Change PWB-A. ∗ C0351, C0352, C0371, C0372 Step Action 1 Check that PJ11A is securely plugged into PWB-A and PJ9F into PWB-F. 2 Change PWB-F or PWB-A. ∗ C0353, C0373 Step Action 1 Check that PJ13A and CN58 are securely plugged into PWB-A and PJ8F into PWB-F. 2 Change PWB-G or PWB-A. ∗ C0354, C0374 Step 1 Action Check that the connector for connection of the copier and C-302 is without fault.
2-11.
Step Check Item Do as described below to check whether the Exposure Lamp LA1 turns ON: 1) Reset the malfunction. 1 Result Action 2) Select "IC Port Data Check". • To Step 7. 3) By changing the data of BPA0 on PWB-A (IC5A) from "1" to "0", does LA1 turn ON? (See the 2/8 screen on T-7.) YES 2 By making a "Board Check" in "I/O Check", is C0300 displayed? YES 3 Unplug PJ2L (3P) from PWB-L.
2-12.
∗ C0500, C0510 Step 1 2 3 4 Check Item Result When the Fusing Unit Front Door is removed and the Power Switch is turned ON, do the Upper Fusing Roller Main and Sub Heater Lamps H1 and H2 light up? Is TH1 connected securely or clean? Disconnect CN24 (4P).
2-13.
∗ C0511, C0523 Step 1 2 3 Check Item Result When the Fusing Unit Front Door is removed and the copier has completed warming-up, does the Lower Fusing Roller Heater Lamp H3 light up? Is TH2 connected securely or clean? Disconnect CN25 (4P). Is the resistance across CN25-2 and -3 on the Fusing Unit side infinite? 4 After the copier has completed warming-up, is the voltage across PJ7-1A on PWB-A and GND DC0V? (When H3 is turned ON) 5 Disconnect CN6 (6P).
2-14.
∗ C0600, C0601 Step Check Item Result Action • Plug it in securely. • Check the DC5V line. 1 Is PJ6J securely plugged into PWB-J? NO 2 When the Power Switch is turned ON, is the voltage across PJ6J-6 on PWB-J and GND DC5V? NO 3 Is C0600 being displayed? YES • Change M11. 4 Is C0601 being displayed? YES • Change PWB-J. ∗ C0650 Step 1 2 Check Item Result Action • Plug them in securely.
2-15.
∗ C0610 Step 1 2 Check Item Result Action • Change PC2. When PC2 is blocked, does the voltage across PJ3J-2 on PWB-J and GND change from DC5V to DC0V? NO By opening and closing the Front Door, does the Lens move in the X direction? YES NO • Check the Cable Drive Section for any overload. • Change M12 or PWB-J.
2-16.
1075C31TDA T-96
∗ C0910 Step Check Item Slide out the 2nd Drawer and check the 2nd Drawer Lift-Up Sensor PC15 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check the Paper Take-Up Roll 2) Is the data of PE3 on PWB-F (3MJ) (IC2F) " H "? (See the 5/8 Screen on T-7.) Is the data of PE3 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 Screen on T-7.) NO 3) Slide the 2nd Drawer back in to complete lift-up. (PC15: blocked).
∗ C0914 Step Check Item Result 1 YES 2 When the 2nd Drawer is slid in, does the voltage across PJ17F-3 (Metric Areas) or PJ16F-3 (Inch Areas) on PWB- F and GND change from DC0V to DC24V and then change to DC0V again? While M24 is rotating, does the voltage across PJ12F-5 (Metric Areas) or PJ14F-4 (Inch Areas) on PWB-F and GND change in the range DC0V to DC5V? YES 3 Action • To Step 3. Slide out the 2nd Drawer and slide it back in. Does the 2nd Drawer Lift-Up Motor M24 rotate? YES • Change M24.
2-17.
∗ C0911 (Inch Areas) Step Check Item Slide out the 2nd Drawer and check the 2nd Drawer Lift-Up Sensor PC15 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check the Paper Take-Up Roll 2) Is the data of PE3 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 screen on T-7.) NO 3) Slide the 2nd Drawer back in and press the 2nd Drawer Paper Descent Key to complete lift-up. (PC15: blocked) 4) Select "IC Port Data Check" again.
2-18.
∗ C0921 (Inch Areas) Step Check Item Slide out the 1st Drawer and check the 1st Drawer Lift-Up Sensor PC14 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check the Paper Take-Up Roll 2) Is the data of PA3 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 screen on T-7.) NO 3) Slide the 1st Drawer back in and press the 1st Drawer Paper Descent to complete lift-up. (PC14: blocked) 4) Select "IC Port Data Check" again.
2-19.
∗ C0990, C0991 Step Check Item Slide out the 3rd Drawer and check the 3rd Drawer Lift-Up Sensor PC16 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check the Paper Take-Up Roll 2) Is the data of PC3 on PWB-F (3MJ) (IC2F) " H "? (See the 5/8 Screen on T-7.) Is the data of PC3 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 Screen on T-7.) NO 3) Slide the 3rd Drawer back in to complete lift-up. (PC16: blocked).
∗ C0992, C0993 Step Check Item Slide out the 3rd Drawer and check the 3rd Drawer Tray Lower Position Sensor PC46 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check that the Main Tray is in 2) Is the data of PB0 on PWB-F (3MJ) (IC2F) " L "? (See the 5/8 Screen on T-7.) Is the data of PB0 on PWB-F (3MC) (IC2F) " L "? (See the 6/8 Screen on T-7.) NO 3) With the 3rd Drawer slid out, lift up the Main Tray to unblock PC46.
2-20.
∗ C0998, C0999 Step Check Item Result Action Slide out the 3rd Drawer and check the 3rd Drawer Shifter Return Position Sensor PC48 as described below: 1) Select "IC Port Data Check". 1 • Check the position of the 2) Is the data of PB1 on PWB-F (3MJ) (IC2F) " H "? (See the 5/8 Screen on T-7.) Is the data of PB1 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 Screen on T-7.) NO 3) With the 3rd Drawer slid out, lift up the Main Tray to unblock PC48.
∗ C099A, C099b Step Check Item Slide out the 3rd Drawer and check the 3rd Drawer Shifter Home Position Sensor PC47 as described below: Result Action 1) Select "IC Port Data Check". 1 • Check that the Shifter is in the 2) Is the data of PF0 on PWB-F (3MJ) (IC2F) " L "? (See the 5/8 Screen on T-7.) Is the data of PF0 on PWB-F (3MC) (IC2F) " L "? (See the 6/8 Screen on T-7.) NO 3) Remove the Shift Tray and Blocking Plate to unblock PC47.
2-21.
∗ C0996 Step Check Item Check the operation of the 3rd Drawer Lock Solenoid SL8 as described below: 1) Reset the malfunction. Result Action 2) Select "IC Port Data Check". 1 3) Is the data of PC3 on PWB-F (3MJ) (IC1F) "1" (SL8: deenergized)? (See the 4/8 Screen on T-7.) Is the data of PC3 on PWB-F (3MC) (IC1F) "1" (SL8: deenergized)? (See the 5/8 Screen on T-7.
∗ C0F79 Step Check Item Result 1 Does this failure occur when the Main Tray has completed upward motion? 2 Does this failure occur when the Main Tray has completed downward motion or on completion of paper transfer from the Shift Tray to the Main Tray? With the paper stack lifting up the Actuator, check the 3rd Drawer Paper Empty Sensor PC24 as described below: YES Action • To Step 3. • To Steps 4, 5. YES 1) Select "IC Port Data Check".
∗ C0F79 Step Check Item With no paper on the Shift Tray, check the 3rd Drawer Shift Tray Paper Empty Sensor PC60 as described below: Result Action 1) Select "IC Port Data Check". 5 • Change PC60 or PWB-H. 2) Is the data of PD1 on PWB-F (3MJ) (IC2F) " H "? (See the 5/8 Screen on T-7.) Is the data of PD1 on PWB-F (3MC) (IC2F) " H "? (See the 6/8 Screen on T-7.) NO 3) Using a sheet of paper, block PC60. 4) Select "IC Port Data Check" again.
2-22.
∗ C0d00 Step 1 Check Item Result Slide out the Duplex Unit, move the Front/Rear Edge Guide Plates to other than their home positions, and slide the Duplex Unit back in. At this time, does the Front/Rear Edge Guide Drive Motor M10 rotate? Check the Front/Rear Edge Guide Plate Home Position Sensor PC42 as described below: 2 1) Block PC42. (The Front/Rear Edge Guide Plates are at their home positions.) YES NO Action • Check for overload. • Change M10. • Change PWB-G or PWB-A.
2-23.
∗ C0E00 Step Check Item Result 1 When the Start Key is turned ON, does the Main Erase Lamp LA2 light up? YES 2 When the Start Key is turned ON, does the voltage across PJ4A-12 on PWB-A and GND change from DC0V to DC24V? NO Do as described below to check the Malfunction signal provided when the Main Erase Lamp LA2 is turned ON: 3 Action • To Step 3. • Change PWB-A. 1) Select "IC Port Data Check". 2) Is the data of APB0 on PWB-A (IC5A) " L "? (See the 2/8 screen on T-7.
2-24. C0E20: Image Erase Lamp LA3 Connection Failure CN83 PWB-A Symbol Name LA3 PWB-A Image Erase Lamp Master Board LA3 1075C23TAA Step Check Item Check the Loading signal as described below: 1 Action 1) Select "IC Port Data Check". 2) Is the data of APC0 on PWB-A (IC5A) " L "? (See T-5.) 2 Result Is PJ7AB and CN83 (10P) securely plugged into PWB-A? YES YES NO T-117 • Change PWB-A. • Change LA3. • Plug PJ7AB and CN83 in securely.
2-25. C0F10: AE Board PWB-H Malfunction Symbol PWB-A PWB-H PWB-A Name Master Board AE Board PWB-H 1075C24TAA Step 1 Check Item Result When the Scanner is at its home position, the Exposure Lamp is OFF, and the AFR-9 is closed, is the voltage across PJ2A-3 on PWB-A and GND 0.18V or less? and PJ1H. YES • Check the photo receiver of PWB-H for contamination, or change PWB-H. NO T-118 Action • Check the connection of PJ2A • Change PWB-A.
2-26. C0F20: AIDC Sensor UN9 Variation Correction Failure C0F21: AIDC Sensor UN9 Contamination Correction Failure C0F23: AIDC Sensor UN9 Exposure Correction Failure Symbol UN9 PWB-A PWB-A Name AIDC Sensor Master Board CN44 UN9 CN50 CN43 1075C25TAA Step 1 2 Check Item Result Are PJ4A, CN43 (24P), CN44 (10P) and CN50 (3P) plugged securely into PWB- A? Is the photo receptor/LED of the AIDC Sensor contaminated? NO YES NO T-119 Action • Plug them in securely. • Clean the AIDC Sensor.
2-27. C0F30: ATDC Sensor UN8 Failure C0F31: ATDC Sensor UN8 Failure Symbol UN8 PWB-A PWB-A Name ATDC Sensor Master Board CN99 UN8 1075C26TAA Step 1 2 Check Item Result Is the value for "Set" of "ATDC Level" of "Level History" equal to the value given on the Adjust Label? After the Power Switch has been turned ON, is the voltage across PJ6A-5 on PWB-A and GND in the range DC0.18V to DC4.52V? Action • Enter the value given on the NO YES NO Adjust Label. • Change PWB-A.
2-28.
Step 1 2 Check Item Result Is this malfunction code displayed when the function mode Fd-0 (Inch Area) or Fd-2 (Metric Area) is executed? Is the Manual Feed Guide Plate set to the maximum width position? Action • To Step 4. NO • Move the Guide Plate to the NO maximum width position. • Check the Rack Gear. 3 Is the voltage across PJ7AB-14 on PWB-A and GND DC 2.35V or less? YES NO 4 Is the Manual Feed Guide Plate in the minimum width position? • Change PWB-A.
2-29.
∗ C0F02 Step Check Item Result 1 Is the jumper connector fitted properly across J1 and J2 on UN2? 2 Is PJ116 (CN2) plugged securely into UN2 and PJ8A into PWB-A? 3 Is the voltage across PJ8A-6 on PWB-A and GND changing between DC0V and DC5V? Action • Change the position of the NO jumper connector. • Plug them in securely. NO • Change PWB-A. • Change UN2.
3. Power is not Turned ON Symbol S1 S2 PWB-A UN1 S5 RY1 UN1 PU2 PWB-A PWB-B PWB-C PWB-D PWB-C S5 S1 S2 RY1 PU2 PU3 Name Power Switch Lower Front Door Interlock Switch Right Door Interlock Switch Main Relay Control Panel DC Power Supply 1 Master Board MSC Board DC Power Supply Board Noise Filter Board PWB-D Symptom Step RY1 is not turned ON. Check Item 1 2 Though RY1 is turned ON, no control panel indicators light up.
1075C29TBA T-126
Copyright 1994 MINOLTA CO., LTD Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA CO., LTD.
