Service manual

ManualsBrandsSharp ManualsBusiness equipmentSF-2414

SERVICE MANUAL

CODE: 00ZSF2314SM1E

Copier

MODEL SF-2314

MODEL SF-2414

MODEL SF-2514

[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

[ 3 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . 3-1

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

[ 5 ] GENERAL DESCRIPTIONS OF EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . 5-1

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

[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

[10] SERVICE AT MEMORY TROUBLE AND

[10] MAIN CONTROL PWB REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1

SHARP CORPORATION

CONTENTS

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.

SF-2514

SF-2414

SF-2314

Summary of content (131 pages)

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SERVICE MANUAL CODE: 00ZSF2314SM1E Copier SF-2414 SF-2314 MODEL SF-2414 MODEL SF-2514 MODEL SF-2314 SF-2514 CONTENTS [ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 [ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 [ 3 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . 3-1 [ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . .
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CONTENTS [ 1 ] GENERAL DESCRIPTION ................... 1. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. Target users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. System outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [ 2 ] PRODUCT SPECIFICATIONS 5-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . .5-3 (1) Original table . . . . . . . . . . . . . . . . . . . . . . . . .5-3 (2) Copy lamp . . . . . . .
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5. 6. 7. 8. 9. G. Copy density adjustment in the SPF copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-28 (6) Copy density adjustment table . . . . . . . . . . . . . . .7-29 4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-30 (1) Transfer charger wire installation . . . . . . . . . . . . .7-30 (2) DV bias adjustment . . . . . . . . . . . . . . . . . . . . . . .7-30 (3) Separation charger output adjustment . . . . . . . . .7-30 4-2.
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[1] GENERAL DESCRIPTION 1. Features [Small] • Compact design • Small area for operation [Soft] • The energy save mode reduces the total power consumption. • Ozone generation is limited. • Use of materials which can be recycled. [Speedy] • Warm-up time 30 sec or less, the first copy 5.9 sec ∼ the fastest in • User simulation the class. The automatic document feeder (standard provision in the SF2514 only) increases copy productivity. The user can select the desired operating conditions easily.
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(9) [2] PRODUCT SPECIFICATIONS Exposure Exposure mode Manual steps 1.
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• (3) AB series Each paper feed port Paper feed size Paper weight Special paper B4 ∼ A5 (Landscape) 56 ∼ 80g/m2 Recommended Front recycle paper No. 2 tray (OP) B4 ∼ A5 (Landscape) 2 56 ∼ 80g/m Recommended Front recycle paper Single manual feed B4 ∼ A6 postcard (Portrait) 52 ∼ 130g/m2 No. 2 original, OPH, label, postcard sheet, recommended recycle paper, postcards No. 1 tray * For paper of 104 ∼ 130g/m2, A4 or smaller.
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3. Supplies SEC/SECL No. Name 1 OPC drum kit 2 Black developer 3 Black toner 4 Heat roller kit Content Product name OPC drum x 1 Cleaning blade x 1 Black developer (560g) x 10 SF234MD (SF234NDx10) Black toner cartridge (200g) x 10 SF234MT (SF234NTx10) Upper heat roller x 1 Upper fusing separation pawl x 3 Fusing bearing x 1 Lower heat roller x 1 Lower fusing separation pawl x 4 SF234DR SF214HR1 Middle and South America/Asia No.
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3 Numeral The end digit of the year of coating. Environmental conditions Observe the following environmental conditions to ensure the copy quality and machine performance. 4 Numeral or X, Y, Z Indicates the month of coating. X means October, Y November, and Z December. 1 Standard condition 20 ∼ 25 ˚C, 65 ±5% RH 5 6 Numeral Indicates the day of coating. 2 Operational condition 7 Numeral or X, Y, Z Indicates the month of packing. X means October, Y November, and Z December.
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[3] EXTERNAL VIEW AND INTERNAL STRUCTURE 1. External view and internal structure (SF-2514 as the example model) 7 1 2 3 4 5 6 8 9 13 12 11 10 Upper unit 17 16 15 14 18 Lower unit 20 No. 1 4 7 F I L O Name Exit tray Document cover Manual bypass guide Paper tray Power switch Toner cartridge Fusing unit (High temperature) 19 No. 2 5 8 G J M P Name SPF exit tray Original guide Manual bypass Front cover Toner cartridge release lever Open/close lever Fusing unit lever 3–1 No.
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2.
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3. Cross section (SF-2514 as the example model) 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 5 4 3 2 21 22 23 24 1 25 26 42 27 28 29 30 31 41 40 39 No. 1 4 7 F I L O R U X [ ^ a d Name No.3 mirror SPF transport roller SPF PS roller lower SPF document takeup roller Discharge lamp Copy lamp Blank lamp No.5 mirror Manual feed take-up roller Tray transport follower roller Option tray transport roller Transfer charger Upper heat roller Lower separation pawl 38 37 36 35 34 No.
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4. Switches, sensors, detectors (The SF-2514 as the typical example) 4 5 6 7 3 2 9 1 8 11 10 No. Abbreviation Function Type Operation 1 2 3 4 5 6 7 8 9 F POD Paper out sensor Transmission photo sensor H when paper is sensed. MHPS Mirror home position sensor Transmission photo sensor H at the home position. SDSW SPF cover open/close sensor Lead switch H when the cover is open. SPOD SPF document out sensor Transmission photo sensor L when paper is sensed.
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5. Clutches, solenoids (The SF-2514 as the typical example) 1 2 3 4 8 5 7 6 No.
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6. Motors (The SF-2514 as the typical example) 2 8 3 4 1 6 5 7 No. Abbreviation Name Function Type 1 VFM Paper exit fan motor For ventilation of the fuser unit. For cooling the machine and removing ozone.
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7. PWBs (The SF-2514 as the typical example) 8 2 1 4 3 9 5 6 7 No. 1 2 3 4 5 6 7 8 9 Name Description AC circuit PWB AC power input Discharge lamp PWB Discharge lamp drive Main PWB Main body control AE PWB Document density auto exposure detection Blank lamp PWB Blank lamp control Lower unit PWB Lower unit parts control High voltage PWB Supply of the process high voltage and the developer bias voltage.
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List of packing materials and accessories [4] UNPACKING AND INSTALLATION Name 1.
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2 Avoid installation in high temperature or high humitity environments. Also, avoid installation where temperature or humidity may change quickly. (e.g., near an air conditioner). Otherwise copy papers may be dampened and condensation may be generated in the machine. This may result in paper jams or poor copy quality. (Ideal conditions): 5 Install in a well ventilated place.
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[In the case of SF-2314/2414/2514 with SF-MF14 (Optional) equipped.] Open the paper feed tray on the right side of the copier. (4) Power source 1 The power source should be the rated voltage ±10% with the capacity corresponding to the max. power consumption. 2 Do not use an extension cord, or operate any other equipment from the same wall outlet. Remove the No.4/No.5 mirror unit fixing screws (2 pcs.). Then close the paper feed tray.
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4 Remove the developing unit. Loosen the fixing screw (step screw) which is fixing the copier and the developing unit, and slowly pullout the developing unit and Lenz hold Plate from the copier. Gently insert the cassette fully into the copier. Fixing screw (step screw) Lenz hold plate (SF-2414/2514 only) 1 (3) Developer setting 2 1 Open the front cabinet. Push the front cabinet open buttons which are on the left and right sides of the copier, and open the front cabinet.
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8 Install the developing unit. Slowly insert the developing unit into the copier along the guide of the copier until it stops. Tighten the fixing screw which was removed in procedure (D), and fix the developing unit to the copier. 4 Close the front cabinet. Fixing screw (step screw) 2 (5) Toner density sensor level check 1 Developer unit 1 Turn on the power switch of the copier. (4) Toner supply 1 Shake the toner cartridge up and down. Shake the toner cartridge up and down 9 to 10 times.
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(6) Accessory attachment (2) No.4/no.5 mirror unit (Mirror base C) lock 1 Attach the copy tray. 1 Perform locking with the unit at its home position and with the external fitting installed. 2 Lock the unit with two mirror unit fixing screws. (The hole in the right cabinet) 2 Attach the document tray. Mirror unit fixing screw [SF-2514 only] [SF-2314/2414/2514 with SF-MF14 (Optional) equipped.] 1 Turn off the power at the 64% position. Perform locking with the external fitting installed. 2 1 4.
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(2) Remove the paper tray from the main copier unit. 5. Optional paper feed unit (SF-CM14), Installation Manual 1 While lifting up slightly, gently pull out on the paper tray until it stops. For use with compatible SHARP copies. See SHARP copier Installation Manual to determine suitability. 2 Then, lift up on the paper tray with both hands and remove it. Included parts Mounting screw A, 1 pc Mounting screw B, 2 pc [SF-2414/2514 only] (1) Set the main copier unit on the paper feed unit.
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6. Optional multi bypass feeder unit Installation Manual Upper unit (1) Open the upper unit of the main copier unit. 1 Press the release buttons on the left and right sides of the main copier unit’s front cover, then open the front cover. 2 Push the upper half release lever (green) to the right and down, then gently open the upper unit. (2) Release the lock for the manual bypass unit and remove the manual bypass unit.
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(3) Mount the multi bypass feeder unit onto the main copier unit. 1 Slide the positioning pins which project from the multi bypass feeder unit in to the grooves in the main copier unit, then push the multi bypass feeder unit into place to in stall it. At this time, to be sure that the multi bypass feeder unit is securely installed, push down once more on the fourcorners of the unit. (If it has not been securely installed, "CH" may appear in the COPIES MADE display when the power is turned on.
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[5] GENERAL DESCRIPTIONS OF EACH SECTION The general descriptions of the following sections are given: 1 Paper feed section 2 Separation, transport section 3 Fuser, paper exit section 4 Developer section When the CPCF turns off, rotation is stopped, and the takeup roller is pushed up by the roller release arm spring to the position.
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2. Separation, transport section 4. Developer section After passing the resist roller section, the paper is transported to the transfer section. After transfer, the paper is separated from the drum by the separation electrode and the drum separation pawl, then transported to the fuser section by the transport belt. 4-1. General descriptions (1) Two-component developer The developer is composed of toner and carrier.
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5. Optical system 5-1. General descriptions • The optical system is composed of the fixed focus lens and six mirrors. Since the fixed focus lens is employed, No.4/No. 5 mirror base is moved as well as the lens to change the distance between the document and the drum (OID, Original Image Distance) for reduction and enlargement. To move the lens and No.4/No. 5 mirror unit, he stepping motor is driven by the signal from the main control PWB to allow zooming of 0.70 to 1.22 (inch series: 0.64 ∼ 1.
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(7) Lens drive shaft 5-2. Basic operations This shaft is to control the optical axis of the lens in zoom copying. The lens follows on the slide base shaft. (Relationship among the original, the lens and the image in each magnification ratio) Normal copy: The distance between the surface of original on the table glass and the lens is made equal to the distance between the lens and the exposure surface of the photoconductor to make the original and the image equal to each other.
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(Optical system dirt correction) The SF-2314/2414 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 67.7V (135.4V) at power ON. This value is checked with sim 44-02.
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6. Copy process (1) Photoconductor • This model uses OPC (organic photoconductor) as photoconduc- tive material.
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(3) Actual process Step 1 (charging) The OPC drum is negatively charged by corona discharge of the transfer charger . Positive charges are generated in the aluminum layer.
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Step 3 (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. • When the drum surface potential is lower than the grid voltage, electric charges generated by discharging of the charger go through the screen grid to charge the drum surface potential until it becomes equal to the grid voltage.
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Low intensity in the area corresponding to the darker density portion of the document Medium intensity in the area corresponding to the medium density portion of the document HIgh intensity in the area corresponding to the lighter density of the document CTL CGL Main corona unit Aluminum layer Blank lamp Discharge lamp OPC drum Developer unit Cleaning blade MG roller Surface potential (High) CTL Surface potential (Medium) CGL Surface potential (Low) Resist roller Seperation pawl Aluminum layer S
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Step 6 (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 8 (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.
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(5) Process correction system 1) Outline of the correction system This model is provided with the correction system for the optical unit and the photoconductor drum unit. The combination of the two correction systems provides stable clear copy. These functions are to maintain the copy quality for a long time and to correct the characteristics of the parts, and are controlled by the software and invisible from the outside. 2) Correction operation 1.
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2.
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Original transport path and the basic composition 7. SPF section (SF-2514 only) 1. Outline The SPF (Single pass feeder) is a standard provision of the SF-2514, and allows automatic copying of max. 20-sheet documents (of the same size and max. thickness of 3 mm).
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2 Disconnect the CN-B connector of the lower PWB, remove the paper feed unit fixing screws (4 pcs.), and lift the paper feed unit to remove. [6] DISASSEMBLY AND ASSEMBLY The descriptions of this chapter are divided into the following sections: 1. Paper feed section, paper transport section, power section 2. Manual paper feed section 3. Fuser section 4. Optical system 5. SPF section 6. Drum section 7. Developer section 8. Operation panel/medium cabinet 9. Major parts in the frame side 1.
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4 Remove the bearing in the rear frame and remove the paper feed roller ass’y. 1-3. Separation roller 1 Remove the paper feed unit and remove the separation roller. Note for assembly (1): Hang the roller release arm spring on the spring hook of the roller release arm. Attach the paper feed roller ass’y to the paper feed unit, and hang the spring on the paper feed frame. A A Note for assembly (2): Attach the paper feed roller ass’y so that the paper feed roller clutch faces the lower frame.
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3 Remove the clutch, and the gear as shown below: Note for assembly (1): Attach the paper feed roller so that the one-way clutch in the rear frame side. (Be careful to the installing direction.) Attach the roller holder as shown below: One-way clutch side Note for assembly (1): When assembling, attach the positioning pin of the resist roller clutch in the direction of paper exit. 1-5. Resist roller 1 Insert a screwdriver into the front frame hole to release the lock pawl, and remove the TC case.
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1-6. Transport belt 1-8. Lower unit PWB 1 Remove the fuser unit. 1 Open the body up, and remove the rear lower cabinet. 2 Remove the TC case. 2 Remove the connector, the PWB fixing screw (1 pc.), and the CN-F fixing screws (2 pcs.). Slide the lower unit PWB to the front frame side and remove it upwards. 3 Remove the transport belt drive shaft in the TC case from the holder, and remove the drive shaft in the paper exit side, and remove the belt. 1-9.
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4 Remove the manual arm and the E-ring, and remove the manual paper feed roller. Note for assembly (1): When attaching the harness, be careful to the connector color and the lead wire color. (Carefully refer to the indication on the PWB for connection of the harness.) Example: YE (WH) → Yellow connector and white lead wire YE = Yellow, WH = White, BK = Black, GR = Green, BL = Blue Note: Gear 20T has a positioning pin. When removing the manual arm, be careful not to miss the positioning pin.
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8 Remove an E-ring and two connectors. 3. Fuser section 3-1. Fuser unit removal 1 Open the front panel 2 Remove the table glass. 3 Turn the open/close lever to the right and open the upper unit slowly. 4 Remove the connectors (2 pin × 2), slightly lift the right side of the unit and pull it out. 3-2. Heater lamp replacement 1 Remove the fuser cover fixing screw (1 pc.), and slide it to the front side, and remove it.
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3-3. Upper heat roller ass’y removal 3-5. Lower cleaning roller and lower heat roller replacement 1 Remove the bearing fixing screws (2 pcs.) in the front and the rear frames. 1 Remove the fuser unit. 2 Put the paper guide to the paper exit side and separate the separation pawl from the roller and fix it. 2 Remove the CL roller springs (2 pcs.) which is fixing the lower cleaning roller from the hook section. 3 Rotate the fixing screw section of the bearing about 45 degrees below and pull it upwards.
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3-6. Scraper replacement 3-7. Thermistor/thermostat removal 1 Remove the upper fuser unit. 2 Remove the paper exit paper guide fixing screw (step screw) in the front frame side, and remove the paper exit paper guide. Press this projection to desassemble Paper exit paper guide 3 Remove the scraper hook section from the paper exit paper guide, and remove the scraper. * Note for assembly Scraper Note: When attaching the scraper, be careful not to deform it.
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4. Optical system 4-2. Copy lamp unit replacement 4-1. Copy lamp replacement 1 Remove the manual paper feed unit, the right upper cabinet, the glass holder, the table glass, and the operation panel. 2 Move the copy lamp unit to the frame notch (refer to the figure). 1 Open the body up. Release the lock lever of the manual paper feed unit and remove the manual paper feed unit. 3 Remove the terminal section of the copy lamp lead wire. (One screw and insertion terminal) 2 Remove the fixing screws (2 pcs.
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2 5 4 7 2 7 6 6 3 5 5 4 1 2 5 1 3 2 Note: After replacement of the mirror base drive wire, perform the vertical skew copy adjustment, the focus adjustment, and the horizontal skew copy adjustment. 4-4. Lens and lens drive wire replacement (Only the zoom function model) 1 Remove the manual paper feed unit, the right upper cabinet, and the table glass. 2 Remove the dark box cover fixing screw (1 pc.) and the cover.
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Note: When the lens drive wire is removed, the magnification adjustment and the focus adjustment are required. 4-6. Optical unit removal 4-5. No. 4/5 mirror unit and peripheral parts replacement 2 Remove the right cabinet, the left cabinet, the operation panel, the medium cabinet, and the rear cabinet. 1 Remove the drum unit and the developer unit. 3 Remove three connectors A from the sensors in the rear as shown in the figure.
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3 Remove the connector and the fixing screw (1 pc.), and remove the mirror home position sensor (MHPS) towards the rear frame. 4-8. Light adjustment plate/temperature fuse removal 4 Remove the connector and the fixing screw and pull out the lens home position sensor (LHPS) towards the rear frame. 1 Remove the document glass. 2 Remove the parts as shown in the figure. 5 Remove the fixing screw (1 pc.) of the upper frame and the screw and the connector in the rear frame, then remove the main PWB.
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4 Remove the SPF motor ass’y fixing screws (4 pcs.) and the CN-C connector (4 pin) of the SPF control PWB. Then remove the SPF motor ass’y. 5. SPF section 5-1. SPF mechanism removal 1 Open the OC cover, and remove the SPF cover fixing screws (5 pcs.). 2 Remove the SPF upper cover. 3 Remove two fixing screws of paper exit reverse paper guide. (Reference) The SPF motor can be removed by removing two screws from the SPF motor ass’y.
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3 Remove the E-rings (3 pcs.), slide the gear to the clutch once, and pull out the pin inside the gear. Then the gear and the paper feed roller can be removed. 5 Remove four screws from the SPF mechanism, the 2-pin connector from the clutch, the 2-pin connector from the SPF cover open/close sensor, the CN-C (16-pin) connector from the SPF control PWB, then remove the SPF mechanism. 4 Since the takeup roller is of the insertion type, remove it from the grip side. 5-2.
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5-4. SPF control PWB replacement 1 Remove the SPF upper cover as shown in "5-1-1, 2." 2 Remove three connectors and two screws from the SPF control PWB and remove the PWB. 5-6. Sensor removal 5-5.
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7. Developer section 7-1. Developer unit removal 1 Open the front cover. 2 While pressing down the release lever, open the toner cartridge slowly and remove it. 3 Loosen the step screw A. 4 Pull out the developer unit. A 6. Drum section 6-1. Drum unit removal 1 Open the front cover. 2 While pressing down the release lever A, open the toner cartridge slowly. (Arrow B) 3 Remove the screw and remove the drum unit. 7-2.
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2 As shown in the figure below, open the section which is pressing the cartridge pawl with a screwdriver, and pull out the developer cartridge. 7-4. Toner density sensor 7-3. Toner motor removal 8. Operation panel section/medium cabinet 1 Remove four short screws A and one long screw B, and the connector, and separate the toner cartridge section. 1 Open the front cabinet. 2 Remove three screws A and two harnesses from the operation panel. 3 Remove the operation panel unit.
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9. Major parts in the frame side 9-1. Ozone filter 1 Remove the document glass. 2 Remove the black sheet and remove the ozone filter. 9-3. Ventilation fan motor 1 Remove the optical unit. (For details, refer to "4. Optical unit removal.") 2 As shown in the figure below, remove the ventilation fan motor. 9-2. Optical unit/SPF unit cooling fan removal 1 Remove the rear cabinet. 2 Remove as shown below.
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9-4. Transport roller clutch 1 Remove the rear cabinet. 2 Remove the transport clutch as shown in the figure below. 9-5. Paper exit sensor 1 Open the front panel. 2 Move the open/close lever to the right and open the upper unit slowly. 3 Remove the sensor as shown in the figure below.
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[7] ADJUSTMENTS 2 Tie a string to a needle as shown in the figure below. The descriptions of this chapter are divided into the following sections: 4 Mark the point where the needle makes contact with the MG 3 Hold the string and move the needle to the MG roller. roller. 1. Developer section (1) MG roller main pole position adjustment (2) Adjustment of clearance between DV doctor and MG roller 2.
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4 Press the DV doctor in the arrow direction and tighten the DV (2) Adjustment of clearance between DV doctor and MG roller doctor fixing screw. 5 Check that the clearance of the DV doctor is 0.625 ±0.03mm in If the clearance between the DV doctor and the MG roller is improper, the following troubles may occur: • • • the range of 30mm width under the DV doctor fixing screw. Insufficient copy density 0.625±0.03mm Copy dirt Toner splash 1 Remove the DV cover. 2 Loosen the DV doctor fixing screw.
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2. Optical section A. Adjustments list Classification No. (1) Parts installation position (2) Adjustment content Lens Mirror a a b Copy picture quality (3) a Image distortion adjustment b (4) (5) (6) Copy image center position adjustment Focus adjustment (Resolution adjustment) Copy magnification ratio adjustment a b c (7) (8) Uniformity adjustment Image loss, void area adjustment a b Lens unit right angle adjustment No.4/5 mirror unit right angle adjustment No.
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1' 2' (3)-a Make a test chart. (Draw a rectangle NO on B4 or 8 1/2" x 14" paper.) (5) With the document cover open, make a 90% copy on B4 or 8 1/2" x 14"paper. Use the test chart (UKOG-0089CSZZ) or the resolution chart to make a NO 100% copy on B4 or 8 1/2" x 14" paper so that the resolution patterns are copied at the center and the four corners. Check the resolution at the center and the four corners. Check horizontal image distortion.
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3' 4' Use a half-tone document and make a 100% copy on B4 or 8 1/2" x 14" paper in the half tone mode. Make copies at the max. enlargement ratio and the min. enlargement ratio. (7) Measure the distances between the copy image lead edge and the copy paper lead edge of the max. enlargement copy and the min. enlargement copy, and compare the two. Check the uniformity. Is the uniformity OK ? NO Change the installing position of the exposure adjustment plate to adjust the uniformity. NO 0 ± 1.
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C. Adjustment contents Optical unit cover (1) Lens a. Lens unit right angle adjustment I. Summary By setting the optical axis of the copier body and that of the lens in parallel with each other, copy image distortion due to the lens can be reduced. The horizontal angle of the lens unit slide shaft is changed by changing the position of the lens unit slide shaft fixing plate.
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VII. Troubles caused by improper adjustment 2) Remove the document glass. (2) Mirror Optical unit cover There are following adjustments of parts installation positions related to the mirror. * No. 4/5 mirror unit right angle adjustment * No. 4/5 mirror unit drive cam position adjustment a. No. 4/5 mirror unit right angle adjustment I. Summary Copy image distortion caused by No. 4/5 mirror unit van be reduced by setting the optical axis of the copier and No. 4/5 mirror unit.
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VII. Trouble caused by improper adjustment 5) Loosen the No. 4/5 mirror unit drive cam fixing screw without moving the lens unit drive gear. b. No. 4/5 mirror unit drive cam position adjustment (SF-2414/2514 only) I. Summary The copy magnification ratio and focus are properly adjusted by matching the lens unit movement and the No. 4/5 mirror movement. This adjustment is performed by changing the relative positions of the lens unit drive gear and the No. 4/5 mirror unit drive cam. Cam II.
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2) Remove the document glass. Install the No. 1 and No. 2 scanner units to the specified positions, adjust the mechanical horizontal parallelism, and perform the final adjustment while making copies. 3) Loosen the fixing screw of the No. 1 scanner unit wire. II. Purpose The purpose of this adjustment is to reduce horizontal image distortion by setting the horizontal optical axis of the copier and the No. 1 and No. 2 scanner unit horizontal optical axis in parallel with each other.
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6) Procedures 1) to 8) are for adjustment of mechanical horizontal parallelism. No.1 scanner unit and No.2 scanner unit are fixed to the specified positions and the mechanical horizontal parallelism of No.2 scanner unit is adjusted. Without moving the scanner unit drive pulley shaft, manually turn the scanner unit drive pulley in the same side of the loosened setscrew. When it makes contact with No.2 scanner unit positioning plate, tighten and fix the setscrew. Do not move the shaft. No.
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10) Check the horizontal image distortion. If LL = LR, there is no horizontal distortion. b. Vertical image distortion adjustment I. Summary This adjustment is to adjust parallelism of the vertical optical axis of the copier and that of each mirror to eliminate vertical image distortion. For adjusting vertical image distortion, the overall adjustment and the right-left balance adjustment must be performed independently. The overall adjustment is performed by changing the height of No.
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VI. Adjustment procedure 4) Change the height of the roller in No.4/5 mirror unit front frame side to adjust the vertical image distortion. If the copy image is tilting as shown in sample (X) below, lower No.4/5 mirror unit. If it is tilting as shown in sample (Y) below, lift No.4/5 mirror unit. 1) Set the test chart for image distortion adjustment on the document glass, and make a normal copy on a paper of A4 or 8 1/2" x 11". 2) Check image distortion in the right and the left sides.
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III. Note Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly. * Lens unit right angle adjustment * No.4/5 mirror unit right angle adjustment 5) Remove the right side cabinet and the document reference plate. Document reference plate Document table glass * Image distortion adjustment IV. Cases when the adjustment is required 1) When the lens unit is disassembled or its part is replaced.
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VII. Troubles caused by improper adjustment 4) Remove the right cabinet and the document reference plate. (5) Focus adjustment (Resolution adjustment) Document reference plate Document table glass I. Summary The distance between the document and the photoconductor drum is changed by changing No.4/5 mirror unit drive lever position to adjust the focus. II.
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IV. Cases when the adjustment is required VII. Troubles caused by improper adjustment 1) When the lens and the mirror unit are disassembled or the part is replaced. (6) Copy magnification ratio adjustment The copy magnification ratio adjustment must be performed in the vertical direction and in the horizontal direction. In addition, the horizontal copy magnification ratio adjustment must be performed both in the document table mode and in the SPF mode.
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(When a 100mm scale is used as the original.) Original scale mm 1/2mm HARDDENCD STAINLESS JAPAN 10 20 100 110 120 130 140 150 Shizuoka Paper feed direction mm 1/2mm HARDDENCD STAINLESS JAPAN 10 20 100 110 120 130 140 150 Shizuoka Reference Comparison point Copy 110 5) Calculate the vertical copy magnification ratio. Vertical copy magnification ratio = Copy image size x 100 (%) Original size 6) Check that the actual copy magnification ratio is within the specified range (100 ±0.
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II. Purpose The purpose of this adjustment is to fit the displayed copy magnification ratio with the actual copy magnification ratio. VI. Adjustment procedure (Document table copy mode: Horizontal copy magnification ratio adjustment) III. Note Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly. 1) Set the scale on the document table as shown below. (Use a long scale for precise adjustment.
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Repeat procedures 1) to 8) until the horizontal copy magnification ratio in the normal (100%) copy mode is within the specified range. (SPF copy mode: Horizontal copy magnification ratio adjustment) 1) Set the copied scale image paper which was made in the horizontal copy magnification ratio adjustment in the document table copy mode so that the scale image is horizontal in the SPF. Note that the copy magnification ratio of the copied scale image must be proper. 2) Set the copy magnification ratio to 100%.
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VI. Adjustment procedure (8) Image loss/void area adjustment 1) Set a half-tone paper of A4 or 8 1/2" x 11" on the document table. The image loss/void area adjustment is performed by the combination of the copied image position adjustment on the copy paper and the void area adjustment. Since the image loss and the void area are closely related each other, they must be adjusted simultaneously.
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IV. Cases when the adjustment is required Adjustment value C: Corresponds to the time interval from (SF-2514 only) the SPF resist roller ON to the copier resist roller ON. This value is used to change the paper feed timing for the image on the photoconductor drum and to change the copy image position on the copy paper. When the set value is changed by "1," the copy image position is changed by about 0.123 mm. When the set value is made greater, the copy image position for the copy paper moves backward.
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5) Press the scale onto the document alignment plate and set it horizontally as shown below: L2 10 20 30 40 50 60 70 Scale Scale image lead edge Reduction copy (x 0.64) 6) Execute simulations 50-1 to make several copies at each of 129% and 64%. (For the models without zoom functions, make several copies at 100%.) 8) Enter the measure values in procedure 7) into the formula below to calculate adjustment value A and adjustment value B. (Not required for the SF-2314.) A = 8.
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12) Check that the difference between the distance from the copy paper lead edge to the copy image lead edge of 129% copy and that of 64% copy is in the range of 0 ± 1.0 mm. (Not required for the models without zoom functions.) If the difference is out of the above range, change adjustment value A and repeat procedures 10) and 12) until the difference is within the above range. If adjustment value A is improper, the copy image lead edge position fluctuates in proportion to the copy magnification ratio.
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IV. Cases when the adjustment is required 18) Set documents in the SPF, make 100% copies, and check that the copy image lead edge is in the range of 0 ± 1mm from the paper lead edge position reference. (Only the SPF models) If it is out of the above range, change adjustment value C and repeat procedure 18) until it is in the range of the above range. 1) When the optical section is disassembled or its part is replaced (including the scanner home position sensor).
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13) Make a copy in the SPF mode and check that the void area is within the specified range. 5) Measure the lead edge void area of each copy. Void area Void area Copy scale image mm 1/2mm 10 20 Copy scale image 30 mm 1/2mm 10 20 30 Black background edge Black background edge Paper lead edge Paper lead edge 6) Calculate the average void area. Standard: 7) Calculate the void area adjustment value from the formula shown below. 1 ∼ 3 mm current void area (mm) Current set value (99) – 0.
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5) Measure the end edge void area of each copy. (End edge void area adjustment) Paper feed tray mode 1) Press the paper feed unit select button to blink the manual paper feed lamp and to set the machine to the rear edge void adjustment mode in the manual paper feed mode. Void area 2) Perform the end edge void adjustment in the manual paper feed mode similarly with the end edge void adjustment in the cassette paper feed mode.
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3. COPY DENSITY ADJUSTMENT (4) Copy density adjustment mode (1) Copy density adjustment timing The copy density adjustment must be performed in the following five mode: The copy density adjustment must be performed in the following cases: ✱ ✱ ✱ ✱ ✱ ✱ ✱ ✱ ✱ When in maintenance. When the high voltage unit output current or voltage is adjusted. When the developing bias voltage is adjusted. When the copy lamp is replaced. When the optical section is cleaned. When an optical part is replaced.
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3) Set the density level to "1" with the copy density adjustment key. (The currently set copy lamp voltage level will be displayed on the COPIES SELECTED display.) Copy mode lamp Copy density display lamp EXPOSURE AUTO MANUAL PHOTO C. Normal copy mode (Toner save mode) copy density adjustment 1) Set the adjustment mode to the normal copy mode (Toner save mode). (Press the copy mode select key to light the normal copy mode lamp and the photo copy mode lamp.
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F. Auto copy mode (Toner save mode) copy density adjustment Copy mode lamp Copy density display lamp EXPOSURE AUTO MANUAL PHOTO Lighting Copy sheet display TRAY SELECT 1) Set the adjustment mode to the auto copy mode (Toner save mode). (Press the copy mode select key to light the auto copy mode lamp and the photo copy mode lamp.
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A : Auto copy mode P : Photo copy mode N : Normal copy mode (6) Copy density adjustment table Copy mode Mode display Density level N.TS : Non-toner-save mode TS : Toner save mode Test chart copy density 1 2 3 4 5 6 7 8 9 10 W 1 Slightly copied Not copied N.
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4. Others b After replacement, be sure to clean the charger wire with alcohol. (1) Transfer charger wire installation c After wiping with alcohol, wipe with a dry cloth. Install the transfer charger wire as shown below. (Clean the charger wire at every 40K copies and replace it at every 80K copies.) Transfer charger unit (TC unit) d Use charger wire of 70µ (DWIR-0466CSZZ). (Be sure to use alcohol only.
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2. Purpose [8] SIMULATIONS 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 Contents Purpose/kind Adjustment Section Paper feed section Main code Sub code 51 2 Ref. page Description Used to adjust contact pressure between paper and the main body resist roller or the SPF resist roller. (Amount of paper buckle at the resist roller) Change the set value when the shift between the paper and the image varies. (Operation/procedure) When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display.
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Contents Purpose/kind Adjustment Section Optical unit Main code Sub code 46 1 Ref. page Description Used to adjust the copy density (exposure level) and the copy density gradient (exposure gradient) in each copy mode. The exposure level is changed by changing the copy lamp applying voltage. The adjustment points are exposure levels "1" and "5" in each copy mode. The copy density (exposure level) and the copy density gradient (exposure gradient) can be adjusted arbitrarily.
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Contents Purpose/kind Adjustment Section Optical unit Main code Sub code 47 Ref. page Description Used to store the characteristics of the AE sensor and the optical section for the change in the copy lamp applying voltage. The exposure level in the auto copy mode is automatically determined by the stored data and the document density. This simulation is used to correct the output characteristics of the AE sensor output characteristics, which differ in different machines.
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Contents Purpose/kind Adjustment Section Optical unit Main code Sub code 50 1 Ref. page Description Used to adjust the copy image position on the copy paper. (Zoom, SPF machine) 7-19 (Operation/procedure) The adjustment is performed by changing the three set values A, B, and C. The zoom machine has two set values, the SPF machine three, but the normal machine only one. When the simulation key operation is performed, warming-up is performed and the ready lamp is lighted.
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Contents Purpose/kind Adjustment Section Main code Sub code Developer unit 25 2 Ref. page Description (Operation/procedure) After 3 minutes from start of stirring of the DV unit after the main motor rotation, toner density is sampled 16 times during 8 sec, and the average value is stored as the toner density reference value in the RAM. With this reference value as the threshold value, the toner density is controlled. 4-5 M.M DV.
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Contents Purpose/kind Setting Section Main code Sub code Specifications 26 6 Ref. page Description Used to set the destination. (Operation/procedure) When the simulation key operation is performed, the code number of the currently set destination is displayed. Enter the code number corresponding to the desired destination and press the print button, and the specifications for the destination will be set. Code No.
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Contents Purpose/kind Setting Section Fuser unit Main code Sub code 43 2 Ref. page Description Used to set the fusing temperature in the power save mode. (Operation/procedure) When the simulation key operation is performed, the lower two digits of the currently set temperature is displayed on the COPIES SELECTED display. Pressing the paper select key under that state allows selection of fusing temperature by the increment of 5 ˚C. To set the temperature, press the print button.
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Contents Purpose/kind Operation check Section Paper feed unit Main code Sub code 30 1 Ref. page Description Used to check the operations of the sensors and detectors in the paper feed section, and their related circuits. The operations of the sensors and the detector in the paper feed section can be monitored by the lamps on the operation panel. 3-4 (Operation/procedure) ON/OFF of the sensors and detectors in the paper feed section can be monitored with the lamps on the operation panel.
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Contents Purpose/kind Operation check Section Optical unit Main code Sub code 1 4 Ref. page Description Used to check the operation of the optical unit and its control circuit. (Operation/procedure) The operation of simulation 1-3 is repeatedly performed. 5 3 Used to check the operation of the copy lamp and its control circuit. (Operation/procedure) The copy lamp lights up for first one sec at full power, and lights for 4 sec at the currently set exposer level (copy density).
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Contents Purpose/kind Operation check Section Process Main code Sub code 44 2 Used to display the reference value of the optical system dirt correction. This value affects the process correction system. For details, refer to the descriptions on the process correction system. 5-5 5-13 3 Used to display the reference value of the optical system dirt correction. 5-13 Description Ref.
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6. User simulation B) Auto off mode (The energy-saving effect is greater than the preheat mode. The machine enters this mode after passing a certain time from completion of copying. When, however, the machine is temporarily stopped by paper jam, paper empty, toner empty (with the toner supply lamp ON), etc., the machine does not enter this mode.
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Energy-saving mode Machine state Auto start from D, E A. Warmup B. Ready C. Copying D. Preheating (@1) E.Auto power shut off mode F. Resetting G. Reversed (Reset) ON F ON F ON F ON F OFF D ON F ON F Blink OFF D OFF D ON F ON F Blink Blink Ready lamp ON F ON F OFF D ON F OFF D ON F OFF D Power switch ON ON ON ON ON ON ON Operation panel Energy-saving LED @1: When the copy button is pressed during preheating, the machine enters the state of "G. Reserved.
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(3) User program code table [ES conforming area] Program P code Auto clear passing time setting 1 Preheat mode setting and passing time setting 2 Auto off mode passing time setting 3 @ Stream feeding mode setting and cancel (Only models with SPF) Auto off mode setting, cancel Selection code: Set content 0: NO 1: 30 sec. 2: 60 sec. 3: 90 sec. 4: 120 sec. 0: NO 1: 30 sec. 2: 60 sec. 3: 90 sec. 4: 120 sec. 1: 30 min. 2: 60 min. 3: 90 min. 4: 120 min. 5: 240 min.
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[9] SELF DIAG 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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4. Self diag contents Error code Main Sub L1 0 Item Content Detail Cause Remedy L3 0 Content Detail Cause Remedy L4 1 Content Description Ref. page Scanner feed trouble 1) 86 pulses (45 mm) of the scanner motor drive pulse have been outputted after the scanner unit started scanning, but the scanner home position sensor (MHPS) does not turn off. 2) The scanner unit is not at its home position (MHPS does not turn on) when the scanner unit starts scanning.
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Error code Main Sub L4 1 Item Detail Cause Remedy L5 2 Content Detail Cause Remedy L8 1 Content Detail Cause Remedy 3 Content Detail Cause Description The rotary encoder signal cannot be detected for more than 50ms during delivery of the main motor On signal output.
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Error code Main Sub Item L8 3 Remedy H2 0 Content Detail Cause Remedy H3 0 Content Detail CAuse Remedy H4 0 Content Detail Cause Remedy U2 1 Content Cause Remedy 4 Content Detail Cause Description Check the following items: 1) AE sensor or its input circuit 2) Copy lamp control circuit (copy lamp control signal) After repair, turn off/on the power switch. Fuser section thermistor trouble The voltage across the thermistor input circuit remains 4.6V or more for 1500 ms or more.
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Error code Main Sub Item U2 4 Remedy U5 5 Content Detail Cause Remedy EE EU Content Detail Cause Remedy EL Content Detail Cause Remedy CH Light Content Detail Cause Remedy Light Content Detail Cause Remedy Description Ref.
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Error code Main Sub PC Item Content Detail Cause Remedy Paper empty Content Detail Cause Remedy Toner empty Light Content Detail Cause Remedy Toner empty Blink Content Detail Cause Remedy JAM Content Detail Cause Remedy Description Personal counter installation trouble The personal counter is not installed in the personal counter mode. The input circuit of the personal counter installation detect signal does not turn HIGH level.
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Error code Main Sub Item SPFJAM Content Detail Cause Remedy Description Ref. page Document misfeed trouble 1) When the document is in the SPF section, a misfeed of copy paper occurs. 1) The document detector in he SPF section remains ON or OFF.
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Memory trouble [10] SERVICING AT MEMORY TROUBLE AND MAIN CONTROL PWB REPLACEMENT Procedures for memory trouble, main control PWB replacement, and main control PWB EEPROM replacement "U2" trouble occurs 1. General The control PWB stores 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.
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1 NO Is the toner density reference value recorded? Use Sim 25-2 to set the toner density reference value YES NO Is the copy density adjustment value recorded? Enter the toner density reference value with Sim 73-1. Make a copy and adjust the copy density (Sim 46-1/ 51-6) YES Use Sim 46-1/51-6 to set the copydensity adjustment value Use Sim 43-1 to set the fusing temperature NO Set the temperature in the power save mode with Sim 43-2.
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2' Are the image lead edge position adjustment value and the resist roller ON timing adjustment value recorded? NO Make a copy and adjust the image lead efge position and the resist roller ON timing YES Use Sim 50-1 to set the image lead edge position adjustment value and the resist roller ON timing adjustment value NO Is the SPF mode horizontal copy magnification ratio adjustment value recoded? Make a copy and adjust the SPF mode horizontal copy magnification ratio YES Use Sim 48-3 to set SPF mode
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4.
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5. Memory simulation list Contents Purpose/kind Adjustment Section Paper feed section Optical unit Main code 51 Sub code 2 Default value 50 26 8 11 45 46 1 1 50 47 48 1 2 50 1 50 50 50 50 50 Process Developer unit SPF unit Setting Specifications 44 25 48 1 2 3 50 51 2 50 26 6 1 6 Ref.
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Contents Purpose/kind Setting Section Fuser unit Main code 26 Sub code 13 Default value 0 Setting of the main motor operation mode in warming up. Code No. Operation mode Normal mode Long mode 0 1 43 Counter Process Total counter Trouble cancel 44 22 20 21 22 1 2 1 5 1 1 1 2 185˚C 0 16 2 14 16 Ref. page Description 8-8 Operation When the fusing temperature reaches the specified level, the main motor stops. The main motor keeps rotating until the completion of the warming up.
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[12] ELECTRICAL SECTION 1. System block diagram 2 3 6 1 3 6 2 3 6 2 3 2 DL PWB MFD1 MFD0 2 6 2 SPFD AE PWB LM LHPS BL PWB MIR.
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3.
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31 30 Clock generating circuit Enable output E Clock output XOUT 12 – 3 74 75 76 77 78 79 80 1 I/O port P7 61 62 63 64 65 66 67 68 I/O port P8 Arithmetic logic unit (16) P7 (8) 2 Accumulator B (16) P8 (8) 3 7 8 Processor status register PS (11) I/O port P5 I/O port P4 I/O port P3 I/O port P2 37 38 39 40 41 42 43 44 Program address register PA (24) 33 34 35 36 I/O port P1 71 Reference voltage input VREF I/O port P0 26 Bus width select input BYTE 53 54 55 56 57 58 59 60 P0 (8)
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4 CPU: M37702 (IC110) pin signals Pin No.
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Pin No.
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(4) Heater lamp control circuit 1 General The heater lamp control circuit detects the heat roller surface temperature with the thermistor, converts it into voltage level, and outputs it to the CPU analog input pin. The CPU converts the analog voltage into digital signal level, compares it with the value set by simulations, turns on/off the heater lamp according to the level, and maintain the heat roller surface temperature at a constant level. 24V Q110 DTA114YK 47K 10K R105 2.
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(5) Driver circuit (Solenoid, magnetic clutch) (6) Stepping motor drive circuit 1 General 1 General The control signals of each load outputted from the CPU and I/O cannot drive the load directly. The output, therefore, is delivered to the load through the driver IC. The driver circuit drives the lens drive motor.
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(8) Toner supply motor drive circuit 2 Operation IC104 is the motor control IC which drives the toner supply motor with the pulse signals (TMa, TMb) outputted from the I/O chip. After td (= 30msec) from when the voltage exceeds 4.25V after power rising, the output becomes HIGH. "td" is set by the external capacitor.
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(10) Copy lamp control section The change in the copy lamp exposure level is adjusted by changing the ON period duty of the output pulse (CLPUM) from the CPU and controlling the copy lamp voltage. Fig. 1 and Fig. 2 show the circuit diagram and the waveform. 5V2 1 1-7C R160 FW 5 47kJ R161 10kJ 1 Ra6 10KJ V1 7 6 1 10 9 D103 1SS133 FWS 2-4C V3 T.P R167 R169 15kF 200kF R168 16kF C107 1µF 50V R166 15kF 4 C132 1000PF R163 2.2kJ V3' IC111C 8 Ra7 10KJ LM339 C131 0.
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The relationship between the CLV and the pulse ON period is as shown in the figure below: CPU output (CLPWM) V1 8 or 10 msec 0V V2 Pulse ON (Changeing) 0V (V) CLV V3 60Hz 50Hz 0V +5V V4 Pluse ON period 0V • When the pulse ON period is shorter, the CLV becomes higher, and vice versa. • The pulse ON period rises at he AC zero cross timing and is driven by the duty.
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4. Operating section (1) Outline The operating circuit is composed of the key matrix circuit and the display matrix circuit. Key detection: Keys are detected with signal matrix of W0 (Q25) ∼ W7 (Q32) and KEY0 ∼ KEY2. With W0 signal at LOW (GND) and W1 ∼ W7 at HIGH (open), the level of KEY0 ∼ KEY2 is checked and "H" or "L" state of 4K, 2K and 3K in the key matrix is judged to judge ON/OFF. For W1 ∼ W7, switching is made every 2 msec for judgement.
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(2) Display circuit Control is performed with the data signal and the control signal from the control circuit.
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(3) LED display The LED is lit up by the signal matrix of MDL0 (Q1) ∼ MDL1 (Q2) and F0 (Q3) ∼ F20 (Q23). By turning on/off ports F0 ∼ F20 with the timing of MDL0 and MDL1, the LED at the matrix cross point is lighted up. +5V1 RDL1 DTB113ZS PEL MDL0 Q1 MDL1 Q2 F1 Q4 LC7935 2m sec Cycle 4 msec 1/2 duty MDL0 GND MDL1 GND FO GND RDL1-ON PEL-ON 5.
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• In the main PWB unit VH L-7 About 32V (VH) 32V 32V 32V CHK JP L-8 32V 32V C103 470uF 63V L-5 L-6 C144 22000PF FB105 32V P-GND +24V (VB) NPN transistor P-GND 24V D101 24V CHK JP DSS131 24V Q101 2SD1769 R101 510J 1/2W C142 22000PF ZD101 RD13EB1 C143 22000PF ZD102 RD13EB1 C102 47uF 35V C145 22000PF POWER GND Zenor diode VD L-3 Three-termonal regulator +5V (VD) IC101 MC7805CT 5V1 1 5V1 3 5V1 CHK JP 2 C101 0.
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CAUTION FOR BATTERY REPLACEMENT (Danish) ADVARSEL ! Lithiumbatteri – Eksplosionsfare ved fejlagtig håndtering. Udskiftning må kun ske med batteri af samme fabrikat og type. Levér det brugte batteri tilbage til leverandoren. (English) 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 manufacturer’s instructions.
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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.