Service manual

ManualsBrandsSharp ManualsBusiness equipmentSF-1116

SERVICE MANUAL

CODE: 00ZSF1116/A1E

MODEL SF-1116

[ 1 ] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1

[ 3 ] PRODUCT VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1

[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 – 1

[ 5 ] DESCRIPTION ON EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 – 1

[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 – 1

[ 7 ] ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 – 1

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 – 1

[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 – 1

[10] MEMORY TROUBLES, FLOWCHART FOR REPLACEMENT OF

MAIN CONTROL PWB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 – 1

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 – 1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 – 1

CONTENTS

SHARP CORPORATION

This document has been published to be used

for after sales service only.

The contents are subject to change without notice.

Parts marked with "!" is important for maintaining the safety of the set. Be sure to replace these parts with specified

ones for maintaining the safety and performance of the set.

Summary of content (125 pages)

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SERVICE MANUAL CODE: 00ZSF1116/A1E MODEL SF-1116 CONTENTS [ 1 ] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 – 1 [ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 – 1 [ 3 ] PRODUCT VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 – 1 [ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Contents [1] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . 1-1 1. Product features . . . . . . . . . . . . . . . . . . . . . . . . 1-1 [5] DESCRIPTIONS OF EACH SECTION 1. 2. System configuration (options) . . . . . . . . . . . . . 1-1 2) Basic operations . . . . . . . . . . . . . . . . . . . . 5-1 2. 2) Basic composition . . . . . . . . . . . . . . . . . . . 5-2 3. Supply parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3 (1) Automatic document feeder (ADF) . . . . . .
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1) Copy lamp replacement . . . . . . . . . . . . . . 6-6 10-1. Separation roller . . . . . . . . . . . . . . . . . . . 6-24 2) Mirror base wire replacement and adjustment . . . . . . . . . . . . . . . . . . . . . . . . 6-7 10-2. Take-up roller/paper feed roller . . . . . . . 6-24 3) No. 2/3 mirror unit (mirror base B) installation (Mirror base B positioning) . . . 6-9 [7] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 7-1 1. Developing section . . . . . . . . . . . . . . . . . . . . . .
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[10] SERVICING AT MEMORY TROUBLE AND MAIN CONTROL PWB REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . 10-1 1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 3. Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 4. Set value recording sheet . . . . . . . . . . . . . . . . 10-3 5. Memory simulation list . . . . . . . . . . . . . . . . . . . 10-4 [11] MAINTENANCE . . . . . . . . .
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[1] PRODUCT OUTLINE 1. Product features (1) • • Compact body Compact body size The body width of 600mm is the smallest in the class. The employment of the front loading tray and the folding-type multi manual paper feed cassette realizes the small occupying area. (Option) • (2) Clean copy gentle to the environment Silent design, • Low level of ozone, use of recyclable materials • The energy-saving mode reduces the power consumption. (3) High capacity of copying Warm-up time is less than 35 sec.
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[2] PRODUCT SPECIFICATIONS (12) Additional functions Function Auto Paper Selection × 1.
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(2) 2. Description of each section (1) Paper feed section A3 ∼ A6/Ledger ∼ Invoice Copying size Paper feed system Paper feed capacity Cassette Tray Multi manual paper feed Multi Paper size 250 sheets × 1 Paper weight 56 ∼ 80g/m2 Inch series: Ledger ∼ Invoice 15 ∼ 21 lbs AB series: A3 ∼ A6R Single Inch series: Ledger ∼ Invoice Light source Halogen lamp Exposure system Slit exposure by moving the light source Zooming system By changing the lens positions and the scan speed.
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Middle & South America/Asia (excluding China) Name Life Product name Photoconductor drum Cleaner blade Drum separation pawl x1 x1 x2 60K SF-226DR Black developer Black developer (530g) x 10 60K x 10 SF-226CD Black toner Black toner bottle (280g) x 10 6K x 10 SF-126CT 4 Upper heat roller kit Upper heat roller Upper separation pawl Fusing bearing x1 x4 x1 120K SF-216HU 5 Lower heat roller kit Lower heat roller Lower separation pawl x1 x4 120K SF-220LH 6 Staple cartridge Staple c
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4. Optional specifications (2) 10-bin sorter (1) Automatic document feeder (ADF) Type Copier installation type/Hanging type Distribution system Bin shift by lead screw No. of bins 10 bins (The top bin is used also for non-sort.) Capacity 30 sheets/bin (L4/letter size), 100 sheets for the top bin only.
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(3) 10-bin staple sorter (10-bin SS) Staple section Type Copier stapler Type Copier installation type/hanging type Stapling time 1.8 sec Distribution system Bin shift system by lead screw No. of stapled sheets 30 sheets (80g/m2, 21 lbs.) No. of bins 10 bins (The top bin is commonly used for non-sort. Binding reference Front reference Staple supply Cartridge (5,000 pcs.
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[3] PRODUCT VIEWS 1. External view and internal structure 5 6 1 4 2 7 8 9 3 10 4 11 12 14 15 16 13 No. Name No. Name No.
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2. Operation panel 1 2 3 SORTER 4 5 EXPOSURE DUAL PAGE COPY SORT MARGIN SHIFT 1 2 3 8 81/2 x 51/2 11x 17 4 5 16 No.
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3. Clutches, solenoids, and motors 6 8 9 7 1 11 12 2 3 5 10 4 Clutches and solenoids No. Signal name Name Functions, operations 1 PSPS Paper separation solenoid Paper separation solenoid drive 2 RRC Resist roller clutch For resist roller rotation 3 TRC Transport roller clutch For transport roller rotation 4 CPFC1 Tray paper feed clutch For paper feed roller rotation 5 MPFS Manual paper feed solenoid For pressing take-up roller Motors No.
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4. PWB 15 1 2 3 4 5 14 16 7 6 11 8 13 12 9 10 No 1 Name Description No Name Description Operation PWB A Operation input, display control 2 Operation PWB B Operation input, display control 3 Blank lamp PWB Used to control the blank lamp. 4 DL PWB Used to drive the discharge lamp. 5 Optical PWB AE sensor and lens motor interface 6 Process control PWB Used to sense the toner density. 7 Main PWB Used to control the body.
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5. Sensors and switches 2 3 5 4 6 7 1 10 14 8 9 11 13 12 No. Signal name Name Type Operation, function 1 TCS 2 ILSW 3 MSW 4 TH Fusing heater thermistor Thermistor Greater resistance at low temperature 5 TS Fusing heater thermostat Thermostat Contact open at abnormally high temperature 6 POD Paper exit paper sensor Transmission photo sensor LOW when paper is present. 7 MHPS Mirror home position sensor Transmission photo sensor HIGH when paper is sensed.
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6. Rollers, mirrors, etc. 30 29 28 20 19 18 3 4 17 7 34 16 6 5 8 14 15 12 2 13 1 11 9 32 33 38 35 31 No. Name 27 26 25 24 No. 23 22 21 Name 37 36 No. Name 1 No. 3 mirror 2 No. 2 mirror 3 No. 1 mirror 4 Copy lamp 5 No. 4 mirror 6 No. 5 mirror 7 No.
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2 Avoid high temperature and high humidity, and avoid sudden [4] UNPACKING AND INSTALLATION temperature change. (Avoid installation near a cooler or a heater.) If not, paper absorbs moisture and dew forms in the machine, causing paper jam or degraded image quality. 1. Unpacking (Standard condition): 20 ∼ 25°C: (Temperature and humidity): The best condition to use the machine.
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5 Avoid installation to a poorly ventilated place. (5) Grounding wire connection 1 Connect the grounding wire to prevent against a danger. 2 When connecting the grounding wire, connect only to the grounding object (the grounding terminal of the power outlet, etc.) and never connect to a gas pipe. 6 Avoid installation to a place where there are flammable materials or ammonia gas, etc. If the machine is installed near a diazo copier, the picture quality may be degraded and malfunctions may occur.
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3. Optical system lock release 4. Charger cleaning A. No. 2/3 mirror unit lock release A. Main charger unit electrode cleaning Remove the one fixing screw of the No. 2/3 mirror unit on the left side of the copier. 1 Press the hook section of the main charger unit to release lock, and pull out and remove the main charger unit from the copier. Hook Mirror unit fixing screw main charger unit 2 Remove one fixing screw of the main charger unit (on the back side). Fixing screw Electrode section B.
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5 Insert the main charger unit along the guide groove in the copier 3 Remove three fixing screws of the toner hopper of the developing fully to the bottom. unit, and remove the toner hopper. Fixing screw Fixing screw Toner hopper Main charger unit Developing unit 5. Developing unit setting 4 While supplying developer from the developer supply port of the developing unit, turn the MG gear clockwise with a screwdriver or a scale to supply fully in the developing unit. A.
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6 Hold the hand carry strap of the developing unit and insert it into 7. Accessory installation the copier fully to the bottom. A. Copier tray installation Install the copy tray to the paper exit section on the left side of the copier. Hand carry strap Copy tray Developing unit Grip 7 Close the developing unit lever and close the front cabinet. 8. Toner supply 1 Open the front cover.
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3 Hold the new toner bottle as shown and shake it four or five times. 6 Close the toner hopper cover. 4 Open the toner hopper cover. 7 Slide the developer unit into the copier. 8 Return the developer unit lock lever into place. 5 Pour the toner evenly into the toner hopper. 9 Close the front cover.
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9. Center shift adjustment 10. Label attachment There is basically no need to perform the center shift adjustment because it is made when shipping. If the center should be shifted, adjust in the following procedures. Make a copy. If the center is shifted as shown in Fig. 1 or Fig. 2, loosen the four screws which are fixing the cassette grip cabinet. Section b A.
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2) Basic operations [5] DESCRIPTIONS OF EACH SECTION (Tray paper feed operation) When the CPFC (Cassette paper feed clutch) turn on, the paper feed roller shaft, the paper feed roller, and the take-up roller rotate in the direction of A. At the same time, the limiter spring moves down the roller release arm. As a result, the take-up roller falls by its own weight onto the paper surface, starting paper feed.
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2. Developing section (Details of DV harness connector) 1) General descriptions For bias (1) Two-component developer The developer is composed of toner and carrier. Carrier serves as a medium for attaching toner onto the electrostatic image on the photoconductor drum. By stirring toner and carrier, they are rubbed to be charged positive (+) and negative (–) respectively. Since developer will deteriorate to degrade copy quality, it should be replaced regularly.
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3) Basic operations (Cassette paper feed) When the CPFC (cassette paper feed clutch) is turned on, the paper feed roller shaft, the paper feed roller, and the take-up roller rotates in the direction of A, and the roller release arm is moved downward by the limiter spring. As a result, the take-up roller falls by its weight to reach the paper surface, feeding the paper. When the CPFC is turned off, the take-up roller is pushed up to the position by the roller release arm spring.
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(1) Original table (2) Copy lamp The original table is fixed. The original is set in the left center position. 100V series: 85V, 275W 200V series: 170V, 310W (3) Mirror This model uses six mirrors. No. 1 mirror is attached to the copy lamp unit, No. 2/3 mirrors are attached to No. 2/3 mirror base, No. 4/5 mirrors are attached to No. 4/5 mirror base. The copy lamp unit and the No. 2/3 mirror base unit are scanned in copying. The No.
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Parts identification and functions Lens home position sensor Mirror home position sensor No. 2/3 mirror unit AE sensor Reflector Copy lamp unit Lens No. 4/5 mirror unit drive motor N Mirror motor Copy lamp Lens drive wire No. 4/5 mirror unit Lens Lens unit Mirror base wire Temperature fuse (7) Lens drive shaft (14) Temperature fuse This shaft controls the optical axis of the lens in zoom copy. The lens follows along the slide base shaft. This is to shift the lens unit and the No.
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2) Basic operations Mirror base scan speed (Positions of the original, the lens, and the image in each magnification ratio) Lens and mirror positions are changed to adjust the magnification ratio Normal: The distance between the original set on the table glass and the lens is equal to the distance between the lens and the drum, resulting in the equal size of the original and the image.
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(Optical system dirt correction) This model perform dirt correction by changing the copy lamp intensity according to the dirt degree in the optical system (the copy lamp unit, No. 1 mirror, No.2 mirror, No.3 mirror) to prevent against remarkable degrading of copy quality. The reference value is the AE sensor output value which is obtained when the reference plate is exposed with the copy lamp voltage of 67.0V (134.0V) at power ON. This value is checked with sim 44-08, 09.
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4. Copy process This model basic process and structure • The Scorotron method is used to evenly charge the photoconductor surface to the given potential in the charge process. The corona wire regularly used is now replaced with a new corona charge mechanism that employs the 0.1mm thick stainless steel saw teeth plate, in order to suppress ozone generated when the oxide molecule in air is ionized. • Considering the service efficiency, the process separation mechanism is adopted.
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2) Process diagram Original Mirror lens Copy lamp High voltage unit Charging Main corona unit Discharge Discharging Discharge lamp Blank lamp Exposure High voltage unit Toner Development Cleaning blade Waste toner collection Paper exit Developer Cleaning Separation Fusing Manual paper feed Drum upper image/paper synchronization Separation Resist roller Paper feed roller Transportroller Paper cassette Transfer Heat roller Separation corona unit Heater lamp High voltage unit Transf
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3) Details of image forming process Step 1 (Main Charging) By negative discharging of the main charger, uniform negative charges are applied to the OPC drum surface. The OPC drum surface potential is controlled by the screen grid voltage to maintain the grid voltage at a constant level.
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Low intensity in the area corresponding to the darker density portion of the document HIgh intensity in the area corresponding to the lighter density of the document Medium intensity in the area corresponding to the medium density portion of the document CTL CGL Aluminum layer 2 1 OPC drum 3 9 4 Surface potential (High) CTL CGL Surface potential (Medium) 8 Surface potential (Low) 7 6 5 Aluminum layer OPC drum 1 Main corona unit 2 Blank lamp 3 Developer unit Step 3 (Development) 4 MG roller
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Step 4 (Transfer) The transfer paper is charged higher than the OPC drum surface potential by strong negative discharge of the transfer charger, making the binding force between the transfer paper and toner stronger than that between the drum and toner, attracting toner to the transfer paper.
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Step 6 (Cleaning) Residual toner on the drum is removed by the cleaning blade. The removed toner is sent to the waste toner container by the waste toner transport screw. Blade CTL CGL Aluminum layer 2 1 3 9 8 4 7 Residual toner OPC drum 5 6 Step 7 (Discharging) 1 Main corona unit When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL.
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4) Transition of photoconductor surface potential Charge Exposure BL Develop Transfer Separate Clean DL -730V Dark area Developing bias voltage -215V Light area Residual potential 5) Photoconductor drum sensitivity correction In this model, fall in sensitivity due to long use of the photoconductor drum is corrected by the copy lamp light intensity to prevent against considerable change in copy quality.
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The grid voltage value where the same density level as the reference level is obtained is displayed by Sim. 44-9 "a". This value is displayed with 50 as the center in the range of 0 ~ 99 in integer numbers. The correction for 50 is 0V (–410V), and the correction for 56 is +30V (–440V). Process control 1 Toner patch images are formed on the photoconductor surface under the three process conditions (MC grid bias voltage).
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Waste toner transport mechanism: The waste toner is passed through waste toner transport screw 1 and waste toner pipe 2 to waste toner bottle 3. Waste toner bottle 3 is rotated by the main drive gear via gear 4 to transport toner evenly. When the waste toner bottle is full of waste toner, the rotation torque of gear 4 is increased to escape gear 5 in the arrow direction A, and switch 6 is turned on at the same time to light the waste toner replacement lamp. 5.
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5 Drive system division The fuser unit is rotated by the main drive unit. In case of manual rotation of the fuser unit to remove paper jam, however, excessive loads may be applied to the gears. To prevent against this, the pressure of the upper/lower heat rollers is reduced when the machine clamshells are opened. In addition, the fusing gear is so constructed that the drive is not transferred to the drive system. Proccess unit 7.
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(Note for assembly) [6] DISASSEMBLY AND ASSEMBLY 1) There is the 8-pin connector on the back of the rear frame side. When assembling it, carefully insert. The descriptions are divided into the following sections. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 2) The belt must be on the paper feed unit gear and the resist roller gear.
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(Note for assembly 2) 1-4. Separation roller When attaching the paper feed section roller ass’y, adjust so that the paper feed roller clutch and the PS front roller ass’y clutch projection face toward the paper feed side. 1 Remove the paper feed unit and remove the separation roller. 1-3. PS front roller ass’y 1-5. Paper feed roller, take-up roller 1 Remove the paper feed unit. (For the details, refer to the 1-1.) 1 Remove the paper feed roller, and remove the take-up roller.
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4 Remove the clutch and the gears as shown below. (Note for assembly) Attach the paper feed roller so that the one-way clutch is on the rear frame side. (Be careful of the direction.) Attach the roller holder as shown below. One-way clutch side (Note for assembly) 1) Attach so that the resist roller clutch projection is on the paper exit side as shown in the figure below. 2) Arrange the cable and the power grounding wire from the resist roller clutch as shown in the figure below.
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4 Remove two connectors from the unit. 2-2. Transport belt 1 Remove the fusing unit. 2 Remove the TC case. 3 Disengage the transport belt drive shaft holder on the TC case side, then disengage the drive shaft on the paper exit side and remove the belt. 5 Remove the stop ring and remove the unit. (Note for assembly) 1 There is a mark ( î ) on the transport belt. Set so that the tip of the mark faces toward the paper exit direction.
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3-2. Heater lamp replacement 3-4. Upper separation pawl replacement 1 Remove the fusing cover fixing screw (1 pc.), and slide the cover 1 Remove the fusing unit, and remove the cover. to the front side to remove. 2 Put the fusing unit so that the paper guide is on the lower side of 2 While pressing the Fasten terminal projection connected to the the fusing unit (the separation pawl is on the upper side). thermostat, remove the lead wire from the connection section.
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3-6. Lower separation pawl replacement 3-7. Thermistor/thermostat removal 1 Remove the fusing unit. 1 Remove the fusing unit. 2 Remove the lower heat roller, after removing the lock panel. 2 Remove the fusing cover, and remove the thermistor/thermostat. 3 Remove three screws and remove the lower separation pawl unit. * Note for assembly • • Check that the thermistor center is in contact with the heat roller. Clean the thermistor surface with alcohol to remove foreign materials. 4.
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2 Remove the operation panel, the upper cabinet R, and the right cabinet. (B) 3 Remove the dark box cover upper. Optical adjustment plate Install so that the projected portion of the copy lamp is near the rear side as shown above. 4 Manually move mirror base B. (Within the range where the wire 2) Mirror base wire replacement and adjustment 5 Remove the wire fixing plate in the front/rear frame side of the fixing plate fixing screw can be removed.
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B. Mirror base wire removal 3 Rotate the mirror base B counterclockwise to remove. 1 Remove the upper cabinet L, and the left cabinet. 4 Disconnect the connector from the copy lamp unit on the rear frame side and from the No. 2/3 mirror unit. 5 Rotate the No. 2/3 mirror unit counterclockwise and remove. 3 1 2 2 Remove the mirror wire spring from the groove on the left side of the optical base plate. D. No. 2/3 mirror unit (mirror base B) assembly Reverse the above procedures. E.
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1 Hook the metal fixture of the mirror base wire on the optical base plate hook. 2 Pass the mirror base wire along the groove outside the double pulley. 2 At the time, put the No. 2/3 mirror unit on the mirror base positioning plate. Hold it so that the winding pulley groove is on the upper side, and wind the wire. 4 Pass it under the L pulley supporting plate and wind it around the 3 fixed pulley. 5 Pass it along the groove inside the double pulley. 6 Pass in through the fixed pulley.
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2 If the parallelism of the mirror base B is improper as shown in the 4) Copy lamp unit installation (Mirror base A positioning) figure below (one side of the mirror base B is in contact with the positioning plate and the other side is not in contact), perform the following procedure. This adjustment must be performed in the following cases: • • • When the mirror base drive wire is replaced. When the mirror base A or B is replaced. When any part in the dark box is replaced.
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2 Remove the dark box cover upper. 5 Remove the drive springs 4 and 5. 3 Remove the right cabinet. 6 Remove the zooming rack of the roll holder unit. 4 Remember the positions of the lens drive shaft attachment plate (in the directions of A and B) (Inscribe a line). Inscribed line 7 Remove the lens drive shaft attachment plate. A B A B * (IMPORTANT) This is to prevent against defective focusing. (Measurable with a scale.
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8 Remove the drive shafts 4 and 5. 6) Lens wire replacement A. Lens wire removal 1 Remove the OR guide L and R, and remove the table glass. * When removing the No. 4/5 mirror unit, remember the positions (scales) of the arrow marks of the drive holder 4 and 5. Zooming rack 2 Remove the dark box cover upper. No.4/5 adjustment screw No.4/5 drive latch stop screw No.4/5 drive holder B. No. 4/5 mirror unit assembly Reverse the above procedures.
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4 Remove drive spring 4 and 5. 7 Remove the drive wire spring and the wire hook from the lens carriage boss. L drive pulley Lens unit Wire SP 5 Remove the E-ring which is fixing the roll holder drive shaft, and remove the roll holder unit. Wire hook 8 Remove the L pulley and the L drive pulley from the lens wire. B. Lens wire stretching 1. This procedure is performed in the following case. (1) When the lens unit is removed. (2) When No. 4/5 mirror drive unit is disassembled.
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4 Manually turn the zooming can drive gear to fit the zooming cam 2. Procedures drive gear hole and No. 4/5 mirror drive unit base hole B. 1 Manually move the lens carriage unit to fit the lens carriage hole with the optical unit frame hole (which is not the home position hole but the reduction side hole). Insert a pin into the holes, fix the lens unit, and stretch the wire. Pin Hole Zooming cam drive gear No.
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6 Loosen the zooming cam screw, and fit the mark of zooming cam 5. High voltage section drive gear with the mark of No. 4/5 drive shaft. Clean the MC case, and the TC/SC case every 50K copies. Clean the screen grid, the charging plate (saw teeth), and the TC/SC wire every 50K copies, and replace them every 100K copies. Zooming cam 5-1. Main charger (MC) unit 1 Open the front cover. 2 Hold the MC unit lock section, and pull out the MC unit.
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4 Remove the screw and remove the charging plate (saw teeth) 5-2. Transfer/separation charger (TC/SC) unit ass’y. 1 Open the font cover, open the body up. 2 Push TC/SC unit pawl sections A (2 positions) and lift the front side and pull it out. A (Cleaning/replacement and note) 1 When attaching the screen grid, be careful not to deform and dirt the screen grid. Check that the screen grid is securely in position. (Cleaning/replacement and precautions) 1 Set the charger SP length to 17 ±1.0mm.
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5 When installing the unit to the body, check that the grounding 6-2. Waste toner bottle replacement (required when waste toner full detection/maintenance) spring is in contact with the TC/SC case (metal section) on the rear and the front sides. (Visually check, and push the center of the TC/SC unit to check that it can be moved up and down.) 1 Take out the process unit as shown above, If the unit is removed by holding the toner transport pipe, toner is spilled. Avoid this.
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4 While pushing waste toner bottle in the direction of A and lift it 6-3. Drum (Replace every 60K copies) and remove. 1 Remove the process unit from the copier. (Refer to 6-1.) 2 Loosen two blue screws which are fixing the drum, rotate the plate slightly to the right and pull it out. 3 Remove the drum. Be careful not to scratch the drum.
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6-5. Discharge lamp unit (Clean every 60K copies.) 6-6. Cleaner blade (Replace every 60K copies.) 1 Remove three blue screws which are fixing the process unit 1 Remove the holder from the process unit. (3 blue screws) holder, slide the holder and remove it. 2 Remove the cleaning blade. (3 blue screws) 2 Remove the discharge lamp unit. (one screw, one connector) 6-7. Drum separation pawl (Replace every 60K copies.) Slide and remove the blue pin to remove the separation pawl.
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B. DB blade replacement (Replace every 120K copies.) 7. Developing section 1 Remove the old DV blade from the DV cover. (Remove the duplex A. DV side seals F/R replacement (Replace every 120K copies.) tape.) 2 Attach the new DV blade with the pasteboard as shown below. 1 Remove two screws which are connecting the hopper section and (Attach the DV blade to the reference of A and the inscribed line ( 0.2). Do not allow extrusion from the edge. Do not allow covering the inscribed line.
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D. Note for toner hopper drive gear (31T) and stirring shaft attachment 8.Operation panel/intermediate cabinet • 1 Open the front cabinet. Be careful of the stirring shafts A and B attachment positions. 2 Remove two screws A, two screws B, and two harnesses con- Stirring shaft B nected to the operation panel unit. 2 Remove the operation panel unit. 3 Remove the process cover unit, remove six screws C and two connectors, and remove the intermediate cabinet.
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2 Remove the upper cabinet and the rear cabinet. When attaching the cooling fan motor, put the harness section B and the CFm duct groove section A in the same direction, and pass the harness in the groove. Check that the fan center label is on the back when viewed from the rear of the machine. Check that air blows in the arrow direction (toward the machine). 9-2. Power unit 1 Remove the rear upper and lower cabinets.
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2 Remove the ventilation fan motor (2 screws). 9-4. Main PWB unit 1 Remove the rear cabinet upper. 2 Disconnect all the connectors (6 connectors) connected to the main PWB. 3 Remove the main PWB plate (one screw). 4 Remove the main PWB from the plate. (2 screws) 3 Remove the process unit. Insert a screwdriver from the process unit position into the copier to push out the oZone filter. 9-5. AC power PWB 1 Remove the main PWB unit. (Refer to 9-3.) 2 Remove the rear cabinet lower.
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10-2. Take-up roller/paper feed roller 10. Multi paper feed unit 1 Remove the manual feed arm spring, the bearing stopper, and the 10-1. Separation roller E-ring. (At this time, slide the bearing from the guide section in advance.) 1 Remove three screws and remove the paper feed/take-up roller 2 Lift the manual feed stopper, and remove the manual feed shaft ass’y. ass’y. 3 Remove the take-up roller. 2 Remove the separation roller. 4 Remove three E-rings, and remove the manual feed shaft.
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[7] ADJUSTMENTS 1. Developing section 1-1. Developing doctor clearance adjustment Plate D a. If the clearance between the developing doctor and the MAG roller is improper, the following trouble may occur. • • • 0.6 ± 0.03mm Insufficient coy density MAG roller Background copy Toner splash A (1) Remove the developing unit from the copier. (2) Loosen four screws (A) which hold plate D fixed. (3) Insert two clearance gauges of 0.
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(5) Measure the distance from the marking position to the bottom (A) of the developing unit and check that the distance is 17.6mm. If the distance is not as specified above, loosen the MG adjustment plate fixing screw, move the adjustment plate in the arrow directions and perform procedures (3) to (5) again. 17.6mm A (6) MG adjustment plate After completion of adjustment, tighten the MG adjustment plate fixing screw. When tightening, check that the bias terminal is as shown below.
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2-2. Note for adjustments 1. Only the exposure balance adjustment, the blank lamp adjustment, and the copy lead edge adjustment can be performed individually. For the other adjustments, follow the flowchart below. 1. Mechanical reference position adjustment (without copying) A. No. 2/3 mirror unit parallelism adjustment Vertical skew copy adjustment --- Manual adjustment B. Check the following preset values according to the lens focus rank. Lens reference position adjustment --- SIM 48-01 No.
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2-3. Adjustment of each section Be sure to check that the magnification ratio cam is at the home position as shown in the figure below. A. Lens reference position adjustment In this model, the reference value according to each lens characteristics must be entered. With this value, the lens home position is determined. (1) Execute simulation 48-01 • Perform the following key operation.
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(3) Check to confirm the lens value specified on the lens value label. (4) Insert a screwdriver into hole (P) in the right rear side (paper feed side) of the optical base plate, and adjust the adjustment screw. The scale on the zoom base at section Q in the figure below determines the position of the No. 4/5 mirror corresponding to the lens value. P When the lens value is +1.2, loosen the adjustment screw and adjust so that the arrow section of the No.
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(4) Calculate the copy magnification ratio. Copy image size × 100% Original size (9) Copy magnification ratio = (5) (10) Make a copy at 50%. Check that the obtained copy magnification ratio is within the specified range (100 ± 0.8%). If it is within the specified range, go to procedure (7). If not, execute simulation 48-1. • (11) Check that the copy magnification ratio is within the specified range (100 ±0.9%). If it is in the specified range, the vertical copy magnification ratio is completed.
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No.4/5 mirror adjustment screw (Copy) 4.5 5.0 Check points 2.8 3.2 5.6 3.6 6.3 7.1 4.0 8. 0 9.0 9.1 9.2 9.2 9.2 9.2 9.2 2 Perform the focus adjustment in the enlargement mode (200%). (1) Make a copy of the test chart on an A4 or 8 1/2″ × 11″ paper. (2) Check the resolution at the four corners and the center of the copy image. If the resolutions are within the specified range, the adjustment is completed. If not, adjust by shifting the relative position of the zooming can to the drive cam.
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(2) E. Horizontal copy magnification ratio adjustment a. This adjustment is performed to meet the displayed magnification ratio with the actual one. b. This adjustment must be performed in the following cases: • • • • Replace the displayed value with the copy magnification ratio correction rate obtained in (1).
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F. Comparison table of lens values and simulation input values Zoom correction (Enlargement) Zoom correction (Reduction) Sim 48-01 — % Sim 48-01 — % — Lens display value Sim 48-01 +4.0 30 70 +3.9 31 +3.8 Zoom correction (Enlargement) Zoom correction (Reduction) Sim 48-01 — % Sim 48-01 — % — Lens display value Sim 48-01 70 –0.8 54 46 46 69 69 –0.9 54 46 46 31 69 69 –1.0 55 45 45 +3.7 32 68 68 –1.1 55 45 45 +3.6 32 68 68 –1.2 56 44 44 +3.5 33 67 67 –1.
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(4) G. Vertical skew adjustment Loosen the fixing screw of the rear frame side mirror base drive pulley. When La > Lb, rotate the rear frame side mirror base drive pulley in the arrow direction A. (Do not move the flange and the mirror base drive pulley shaft.) When La < Lb, rotate the rear frame side mirror base drive pulley in the arrow direction B. (Do not move the flange and the mirror base drive pulley shaft.) a.
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(1) Make an original for adjustment. Draw parallel lines at 10cm from the both edges of an A3 or 11" × 17" white paper. (Be careful to draw precisely parallel lines.) Parallel line Adjustment procedure (1) When La>Lb (LcLd): Rotate to decrease the height of the front frame side of the No. 4/5 mirror base unit.
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(Example) When La=12mm and Lb=9mm, shift the paper exit side mirror base B rail upward by 1.5mm. • When Lc > Ld, shift the mirror base B rail downward by half of the difference of Lc – Ld. • When Lc < Ld, shift the mirror base B rail upward by half of the difference of Lc – Ld. (5) Remove the document reference plate and the right upper side cabinet, and remove the document table glass. Document reference plate Document table glass (When moving the mirror base rail, hold the mirror base rail handle.
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(3) Remove the original reference plate and the right upper side cabinet, and remove the original table glass. (The value displayed before pressing the % key is stored in the memory by pressing the zoom up key.) (4) Move the exposure plates a, b, c, and d in arrows directions A and B to adjust exposure. Moving the plates in the direction of arrow A makes the copy darker, and moving in the direction of arrow B makes the copy lighter.
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(4) (8) Measure the distance between the copy paper lead edge and the copy image lead edge in each copy. Obtain RRC-A and RRC-B values from the following formulas. Put a scale and an A3 (11" × 17") white paper on the original table as shown below. If the RRC-A preset value is not proper, the lead edge position varies in each magnification ratio. The RRC-B is to adjust the RRC ON timing for fitting the drum image lead edge and the transfer paper lead edge.
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(11) Make a normal copy and check that the image loss and the void amount are within the specified range. (Specified range) • • [Adjustment procedure] (1) Put a scale on the original table. (2) Image loss: 0 ∼ 4mm C → P → 0/◊ → P → 5 → 0/◊ → PSW → 2 → PSW Void amount: 1 ∼ 3mm With the above key operation, simulation 50-02 is performed and the machine starts warming up. Void area 0~3mm (3) The lower two digits of L1 value is displayed on the copy quantity display.
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(2) Drum sensitivity setting 2-4. Copy density adjustment (1) Execute Sim. 26-07, and check that the top digit of the 9-digit drum number printed on the flange in front of the drum is displayed on the copy quantity display. (2) If the displayed number is different from the drum number, change the setting with the 10 digit key pad. A.
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(2) (4) Test chart setting (1) (2) Put several sheets of white paper (Sharp specified paper) of about 120mm wide and about 420mm long to the center reference. 1 Make a copy. Check that "6" of the test chart is slightly displayed. 2 3 4 5 6 7 8 9 10 W Put the test chart (UKOG-0162FCZZ) as shown below: Not copied Slightly copied Make the value displayed on the copy quantity display smaller. Make the value displayed on the copy quantity display greater.
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(2) Perform the same procedures of (2) through (4) in "1) Normal mode exposure adjustment." (4) 3) Photo mode exposure adjustment (1) 1 Make a copy. Check that "3" of the test chart is slightly copied. 2 3 Not copied COPY DENSIty AUTO MANUAL 5 6 7 8 9 10 W Slightly copied Make the value displayed on the copy quantity display smaller. Make the value displayed on the copy quantity display greater.
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Copy density adjustment Item Automatic exposure level initial setting Content 3 (Standard level) TSM mode initial setting 5 (Standard mode) AE sensor level adjustment Execution of Sim. 47 Drum sensitivity setting Execution of Sim. 26-07 Test chart setting Test chart comparison table UKOG-0162FCZZ DENSITY No. 1 UKOG-0089CSZZ DENSITY No. 0.1 KODAK GRAY SCALE 2 3 4 5 0.2 1 6 7 8 0.3 2 3 9 10 W 0.5 1.
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Item Automatic exposure copy density adjustment Content Enter "0" with the 10 digit key pad. Normal mode AE1 AE5 1 2 Not copied TSM mode AE1 (TS) AE5 (TS) 3 4 5 6 7 8 9 10 W 6 7 8 9 10 W Slightly copied Enter "0" with the 10 digit key pad. 1 2 Not copied 2-5. Process section adjustment 3 4 5 Slightly copied B.
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5 Attach the process unit to the copier. (Attach so that the electrode sheet lead wire extends from the developing unit side.) A. Use of special measurement tools Tool: UKOGE0043CS01 (Digital multi meter) 6 Clean the transfer charger wire, and attach the transfer/separation charger unit to the copier. (Do not install the main charger unit.) Electrode sheet (UKOG-0110FCZZ) UK0G-0110FCZZ • • UKOG-0110FCZZ MC grid voltage DV bias voltage F/R difference Tester range 7.
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9 Check the drum current in the front frame side and the rear frame side. Difference between the front frame side current and the rear frame side current must be within 7.0 uA. 4 Select the standard mode (A) with the magnification ratio display key on the operation panel. (The mode is displayed on the copy quantity display.) a. Turn on the main switch and execute simulation 8-02. (MTHV is turned on for about 30 sec.
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2. Purpose [8] SIMULATION The purpose of the simulations feature is to improve serviceability in repairs and adjustments. Since the mechanical adjustments can be performed electrically, the above purpose is achieved with low costs. 1. Outline This model is equipped with the simulations feature which allows the following operations with the keys on the operation panel: 1) 2) 3) 4) 3.
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4.
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5. Details of simulations Simulation input procedure: C → ë → 0 → ë Main code Sub code Content 01 01 Mirror operation check When the print button is pressed, the mirror is scanned at a speed corresponding to the currently set copy magnification ratio. The copy magnification ratio can be arbitrarily set. 02 Optical system sensors (MHPS, LHPS) state display ON/OFF state of the optical system sensor can be monitored by the LED on the operation panel.
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Main code Sub code 03 02 Content Sorer sensor state display The ADF sensor ON/OFF states can be monitored with the LED on the operation panel. When the third digit of the multi display is “0” the following display is made.
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Main code Sub code 06 01 Content PSPS operation check The separation pawl is turned on/off 30 times in the following sequence. PSPS 0.5s 07 0.5s 01 Warm-up time display and aging After execution of the simulation, warm-up is started, and the swarm-up time is displayed every second on the copy quantity display. When warm-up is completed (RPL ON), count adding of the display is stopped.
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Main code Sub code 21 01 22 24 Content Maintenance cycle setting Used to set the lighting cycle of the maintenance lamp (è). When this simulation is executed, the currently set maintenance cycle is displayed on the copy quantity display. After setting the number, press the print button to memory the value. Set value Maintenance cycle 0 60,000 sheets 1 30,000 sheets 2 10,000 sheets 3 5,000 sheets 4 2,500 sheets 5 Free (Not lighted.
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Main code Sub code Content 25 01 Drive system check Used to turn on the main motor, the developing bias, and the discharge lamp for 3 min. The input value of the toner density is displayed on the second digit of the copy quantity display during the main motor is rotating. Copy quantity display 26 Third digit Second, first digit A 1 ∼ 99 Color of developer Black 02 Automatic developer adjustment Same as SIM 25-1.
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Main code Sub code 26 10 Content AE original density setting Used to set the original density. When this simulation is executed, the currently set original density is displayed on the copy quantity display. Enter the set value and press the PRINT button to store it. Set value Original density ← Initial value 0 Normal 1 Thin original When a dark original is copied in the AE mode, the lead edge (about 4mm) is not copied. If it is necessary to copy the lead edge, set this simulation to “1.
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Main code Sub code 30 01 Content Paper sensor state display Used to monitor the ON/OFF state of the sensors in the main body with the LED on the operation panel.
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Main code Sub code Content 44 05 Grid voltage correction operation test Used to perform the grid voltage correction and to display the measure data on the copy quantity display. When this simulation is executed, the grid voltage correction is automatically performed. The image density sensor is read when -30V, 0V, and +30V are applied to the latest patch forming grid voltage. After completion of the operation, the measure data are displayed on the copy quantity display.
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Main code Sub code Content 44 08 Grid voltage correction, optical dirt correction, drum membrane decrease correction data display Used to display each correction data of the grid voltage correction, the optical dirt correction, and the drum membrane decrease correction on the copy quantity display.
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Main code Sub code Content 44 10 Drum voltage correction drum surface data, patch data display Used to display the drum surface data and the patch data after execution of the grid voltage after simulation 44-5, 6 or during normal operation is displayed on the copy quantity display. Since there are two or more display items, the third digit is used to make distinction between the light reception level and the original judgment level, and the lower two digits are used to display the data.
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Main code Sub code Content 46 01 Exposure level adjustment Used to set the copy density (copy lamp output voltage) in each exposure mode. When this simulation is executed, warm-up is started and the currently set manual (ME) upper limit value is displayed on the copy quantity display. When warm-up is completed, the ready lamp lights up. When the PRINT button is pressed, copying is performed in the currently set exposure mode.
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Main code Sub code Content 48 02 Paper transport direction magnification ratio adjustment Used to set the horizontal (paper transport direction) magnification ratio. When this simulation is executed, warm-up is started and the currently set mirror speed correction value is displayed on the copy quantity display. When warm-up is completed, the ready lamp is lighted. Press the PRINT button to start copying. After completion of setting, press the CA key to cancel the adjustment mode.
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Main code Sub code Content 51 02 Resist amount adjustment Used to set the warp amount of paper in the resist section. When this simulation is executed, warm-up is started and the currently set tray resist amount is displayed on the copy quantity display. After completion of warm-up, the ready lamp is lighted. Press the PRINT button to start copying.
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6. User simulation This simulation allows to change and set the following setting which has been set when shipping from the factory. (1) Functions which can be set and canceled by the user simulation Function name Function and setting content • Auto clear • When the copier is left without copying with the power ON, the power consumption is automatically lowered to 60Wh. The time to start this function is set in the range of 1 min - 120 min.
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(3) User simulation code table Sim.
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[9] SELF DIAGNOSTICS 1. Summary/purpose This model has the self diag function for the following purposes: 1) When a trouble occurs in the machine, the machine detects the trouble and displays the trouble content on the copy quantity display to alert the customer and the serviceman. 2) When any abnormality is detected, the power supply line is cut off immediately for safety and to protect the machine from damage. 2. Operation The self diag content is displayed in the following procedure.
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Trouble code Sub code L1 00 L3 00 Content Condition Mirror feed trouble Mirror return trouble • When initializing, MHPS is not turned off within 1.5 sec from starting feeding of the mirror. • When copying, MHPS is not turned off within 0.5 sec from starting feeding of the mirror. • When feeding the mirror is started during copying, the mirror is not at the home position (MHPS is turned off). • When initializing, MHPS is not turned on within 2.5 sec from starting returning of the mirror.
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Trouble code Sub code F2 31 32 EE Content Condition Image density sensor trouble Drum mark sensor trouble • When the light emitting quantity of the image density sensor is increased to the maximum level, the input value does not reach 3.75V. • When the light emitting quantity of the image density sensor is decreased to the minimum level, the input value does not fall below 4.5V. • During execution of the grid voltage correction, the element level is 3V or lower.
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[10] SERVICING AT MEMORY TROUBLE AND MAIN CONTROL PWB REPLACEMENT 1. General 2. Purpose The EEPROM in the control PWB and the EEPROM are storing various set values, adjustment values, and counter values. These data are very important and used for operating the machine properly and for service control. In the following cases, therefore, various set values, adjustment values and counter values must be set again. The purpose is to reset the memory data to operate the machine properly.
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1 Is the toner density reference value recorded? NO Use Sim 25-2 to set the toner density reference value Is the adjustment value of contact pressur between the main body resist roller and the copy paper recorded? YES Make a copy and adjust the contact pressure between the main body resist roller and the copy paper YES Use Sim 43-01 to set the fusing temperature Use Sim 51-02 to set the adjustment value of contact pressure between the main body resist roller and the copy paper Use Sim 22-07 to set
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4.
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5.
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[11] MAINTENANCE 1. Maintenance cycle and maintenance items Maintenance of this model should be performed at every 60K. ★ = Lubricate, F = Clean, v = Adjust, b = Replace/attach, ê = Shift position ✕ = Check (Clean, replace, or adjust if necessary.) * The toner consumption and the waste toner bottle replacement cycle are those when the reference chart is used.
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M uN PID PWB VB1 GND VHM MIRM O LR ES D VH1 GND VB1 GND GND VB1 VD1 O C S W TM V UN DV VB1 GND VD1 PWB KOUGAKU LM T F D P S P S M M VB1 GND VB1 GND C F M VD1 GND M M R E 12 – 1 DPPD2 PWB CPFC2 CSD PWB2 GND ADF CM PWB CSM2 MS2 MOTOR PWB2 VB1 GND VH1 VD2 MAIN PWB VB1 VD1 GND VD1 GND SOTER M H P S VB1 GND PODPWB TH VFM POWER TRANSE VC VHM VH1 VB1 VD1 VD2 GND VCL CSD PWB KT PWB VB1 VB1 GND AC PWB SUB DC PWB DH CL HL VH1 VB1:24V VCL:8V VD2:5V VD1:5V GND FW PPD1 C
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System operation when the power is turned on: Power ON Initial setting Memory transfer Trouble No No JAM Warm up End of warm up Racing Heater lampp ON Mirror initial operation Lens initial operation Process contorol Toner density control End of racing RPL ON PSW ON RPL OFF Copy cycle End of copying 12 – 2
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12 – 3 14 LS151 IC15 ULN2004 IC19 7 GBPWM SELA SELB SELC DATA0 7 11 10 9 5 SORTD ADFD SHV 5 6 GND +5V1 +VCL +24V AD0-1 DC PWB +5V2 EEPROM ROM /CS2 8 MPS 2 13 10 THV/MHV AEG0, AEG1 6 AES 12 ULN2004 DVBIAS TXD,DTR SEL 5 +VH SDA SCL A0-A16 D0-D7 /RD /CS1 MCS DVBIAS THV/MHV SHV GBPWM IC9 5 IC12 PROCON 11 12 RXD A-TXD S-TXD ICA1 IC21 BL PWB IC17 ICA2~4 CPU A0-A2 A B IC11 TD82504 S-DTR A-RES,S-RES FWS, RTH SRES IC14 PCG MCG IC18 Q2 Q8 PCG
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(2) CPU (IC6) SC3041K12F 1 General The CPU controls the loads of the main body and controls the system in synchronization with data transmission and reception through the optional controllers and serial data communication line. 2 Features The SC3041K12F is a high performance single-chip micro computer which is integrated with the necessary peripheral devices as well as the main core of 32-bit H8/300H CPU.
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P37/D15 P36/D14 P35/D13 P34/D12 P33/D11 P32/D10 P31/D9 P30/D8 P47/D7 P46/D6 P45/D5 P44/D4 P43/D3 P42/D2 P41/D1 P40/D0 Vcc Vcc Vcc Vss Vss Vss Vss Vss Vss 4 Internal block diagram Port 3 Port 4 Address bus Port 5 Bus contoller Port 6 P27/A15 P26/A14 P25/A13 P24/A12 P23/A11 P22/A10 P21/A9 P20/A8 P17/A7 P16/A6 P15/A5 P14/A4 P13/A3 P12/A2 P11/A1 P10/A0 P95/SCK1/IRQ5 P94/SCK0/IRQ4 P93/RXD1 P92/RXD0 P91/TXD1 P90/TXD0 HS/300H CPU Interruption controller P66/LWR P65/HWR P64/RD P63/AS P62/BACK P61/BREQ
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5 CPU SC3041K12F (IC1) pin signal Pin No.
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Pin No. Port Signal name 52 P27 AD15 IN/OUT H/L Specifications 53 P50 AD16 54 P51 LHPS IN L Lens home position signal (LOW at 100%) 55 P52 PPD IN H Transport pass sensor signal (HIGH when paper is sensed.
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(3) Detector circuit of sensor signal The LS151 selects one signal of D0 ∼ D7 according to the combination of SEL A ∼ C signals (H, L) and outputs it to Y. Selection of D0 ∼ D7 for SEL A ∼ C is made as shown in the table below. SEL C SEL B SEL A Y 0 0 0 0 0 0 1 1 0 1 0 2 0 1 1 3 1 0 0 4 1 0 1 5 1 1 0 6 1 1 1 7 +5V SEL B +5V CSD1 I/O S2 SW602 HC04 24K +5V 4.7K S0 +5V 4.
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(5) Heater lamp control circuit +5V1 R67 1KJ R71 47KJ 11 13 R75 10 IC20D NJM2901 C7 R68 5.6KJ R84 10KJ 0.22µ F +5V2 8 ~ 20 PR Q5 2SA673 R54 R63 47KJ +5V2 16 15 14 13 12 11 10 9 4 IC10 I1 I2 I3 I4 I5 I6 I7 G O1 O2 O3 O4 O5 O6 O7 SK 1 2 3 4 5 6 7 8 R87 1MJ OP-LATCH CPU 17PIN D47 R89 4.7KF D38 9 IC20C NJM2901 DSM101 1KJ 0.22µ F 8 14 D6 R83 3.9KJ Vref R91 8.2KJ R34 1KJ D16 C6 Q7 2SC945 75J IC15 MA700 C55 R93 680J R92 47KF 22000PF 5 R32 PR 2.
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[When the heat roller surface temperature is lower than the set temperature] a. Since the thermistor pin voltage is higher then the set level, the output signal HL from the CPU is driven to LOW. (7) Stepping motor drive circuit 1 General The driver circuit drives the lens drive motor, the mirror base drive motor, the automatic duplex copy tray, the side plate motor, and the rear plate motor. b. This HL signal is passed through TR Q3 to the solid state relay (SSR).
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(8) AE (Auto Exposure) sensor circuit The AE sensor circuit is composed of the AE sensor PWB; which is composed of the photo diode, the I-V convertor circuit, and the amplifier circuit; and the amplifier circuit on the control PWB. +24V R50 4 CPU AN0 R40 AES 1 1KJ C38 ZD2 HZS883 1000PF IC14A LM324 11 3 1KJ 15KF C48 100KJ 0.
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2 Operation • When "td" (= 30msec) passes after the voltage reaches 4.25V by turning on the power, the output is drive to HIGH. "td" is set by the external capacitor (C106). Block diagram Power 5µA reference R1 Output R2 + 1.25V Output state Power voltage GND Delay capacity 4.25V 0.65V t H ta ta L t Output not constant ta = 30m sec (11) Operation panel 1 General • The operation circuit is composed of the key matrix circuit and the display matrix circuit.
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(12) EnergyStar circuit description The EnergyStar circuit composition saves power consumption when the user leaves the machine with the power ON. Normally in a copy mode or in the standby mode, the main PWB connector HL signal is HIGH (5V) and the AC PWB relay (TY201) is turned on to supply power to all the power transformers and the optional power source.
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q COPYRIGHT  1997 BY SHARP CORPORATION All rights reserved. Printed in Japan. No part of this publication may be reproduced, stored in a retrieval system, or transmitted. In any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.