Sharp SF-2314 Service Manual

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Summary of Contents for Sharp SF-2314

Page 1: Table Of Contents
SERVICE MANUAL CODE: 00ZSF2314SM1E Copier SF-2414 SF-2314 MODEL SF-2414 MODEL SF-2314 SF-2514 MODEL SF-2514 CONTENTS [ 1 ] GENERAL DESCRIPTION ......... . 1-1 [ 2 ] PRODUCT SPECIFICATIONS .
Page 2: 1 ] General Description
CONTENTS 5-1. General descriptions ......5-3 [ 1 ] GENERAL DESCRIPTION ....1-1 (1) Original table .
Page 3: 7 ] Adjustments
4-2. Copy lamp unit replacement ....6-9 G. Copy density adjustment in the SPF copy mode ......7-28 4-3.
Page 4 Single manual feed (Standard) 250-sheet tray 50-sheet multi manual feed unit (SF-MF14) (Option) 250 sheets No.2 tray unit (Option) Zooming range 250-sheets paper tray (1:1) SF-2314 (SF-UB14) Single manual feed (Standard) 250-sheet tray 50-sheet multi manual feed unit (SF-MF14) (Option) 1 – 1...
Page 5 Table top Lead edge Lead edge Lead edge (2) Copy speed 3.0mm or less 3.0mm or less 3.0mm or less • SF-2314 Side (front) Side (front) Side (front) Void area 3.0mm or less 3.0mm or less 3.0mm or less Paper size...
Page 6 • AB series (3) Process section Each paper Paper feed Charging system (–) DC scorotron system Paper weight Special paper feed port size Transfer system (–) DC scorotron system B4 ∼ A5 56 ∼ 80g/m No. 1 tray Recommended Front Separation Discharge plate/separation pawl (Landscape)
Page 7: Supplies
(SF234Tx10) Upper heat roller Upper fusing separation pawl Heat roller kit SF214HR Fusing bearing Lower heat roller Lower fusing separation pawl Note 1: The heat roller kit for this series is common with the previous models SF-2314/2414/2514. 2 – 3...
Page 8 Environmental conditions 3 Numeral The end digit of the year of coating. Observe the following environmental conditions to ensure the copy 4 Numeral or X, Y, Z quality and machine performance. Indicates the month of coating. 1 Standard condition X means October, Y November, and Z December. 20 ∼...
Page 9: External View And Internal Structure
[3] EXTERNAL VIEW AND INTERNAL STRUCTURE 1. External view and internal structure (SF-2514 as the example model) Upper unit Lower unit Name Name Name Exit tray SPF exit tray SPF tray Document cover Original guide Document table Manual bypass guide Manual bypass Operation panel Paper tray...
Page 10 2. Operation panel SF-2314 EXPOSURE TRAY SELECT POWER SAVE AUTO MANUAL 1 2 3 4 PHOTO SF-2414 COPY RATIO TRAY SELECT EXPOSURE POWER SAVE 129% 1 2 x 1 2 x AUTO ZOOM 117% 1 2 x 11 10 14...
Page 11: Cross Section (Sf-2514 As The Example Model)
3. Cross section (SF-2514 as the example model) 11 12 13 16 17 18 19 Name Name Name No.3 mirror No.2 mirror SPF transport follower roller SPF transport roller SPF document exit roller SPF PS roller upper SPF PS roller lower SPF document feed reverse roller SPF document feed roller SPF document takeup roller...
Page 12 4. Switches, sensors, detectors (The SF-2514 as the typical example) Abbreviation Function Type Operation 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.
Page 13 5. Clutches, solenoids (The SF-2514 as the typical example) Abbreviation Name Function and operation SRRC SPF resist roller clutch For SPF resist roller rotation SPF document transport clutch For SPF transport roller rotation PSPS Paper separation solenoid For paper separation solenoid drive Resist roller clutch For resist roller rotation Transport roller clutch...
Page 14: Motors (The Sf-2514 As The Typical Example)
6. Motors (The SF-2514 as the typical example) Abbreviation Name Function Type For ventilation of the fuser unit. Paper exit fan motor DC brushless For cooling the machine and removing ozone. SPFM SPF motor For SPF drive DC brushless Cooling fan motor For cooling the optical system DC brushless Main motor...
Page 15: Pwbs (The Sf-2514 As The Typical Example)
7. PWBs (The SF-2514 as the typical example) 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...
Page 16 List of packing materials and accessories [4] UNPACKING AND INSTALLATION Name Q’ty Packing case 1. Packing drawing (SF-2514) SPF tray SPF cover protection material Body Polyethylene bag for paper exit tray Vinyl sheet for body Bottom case Bottom case pad (L) Bottom case pad (R) AC cord sleeve Paper exit tray...
Page 17: Space Around The Machine
2 Avoid installation in high temperature or high humitity en- 5 Install in a well ventilated place. vironments. 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.
Page 18: Power Source
[In the case of SF-2314/2414/2514 with SF-MF14 (Optional) (4) Power source equipped.] 1 The power source should be the rated voltage ±10% with the Open the paper feed tray on the right side of the copier. capacity corresponding to the max. power consumption.
Page 19: Developer Setting
Gently insert the cassette fully into the copier. 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. Lenz hold plate Fixing screw (SF-2414/2514 only)
Page 20: Toner Supply
8 Install the developing unit. 4 Close the front cabinet. 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. Fixing screw (step screw) (5) Toner density sensor level check...
Page 21: Accessory Attachment
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. 4. Locking procedure for transit or repacking In general, reverse the procedures in "3.
Page 22: Installation Manual
1 While lifting up slightly, gently pull out on the paper tray until it For use with compatible SHARP copies. stops. See SHARP copier Installation Manual to determine suitability. 2 Then, lift up on the paper tray with both hands and remove it. Included parts...
Page 23: Connect The Main Copier Unit And The Paper Feed Unit
6. Optional multi bypass feeder unit Upper unit Installation Manual (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.
Page 24: The Main Copier Unit
(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.
Page 25 250 sheets. It is attached and detached at the front cabinet, that is, the front loading system. The manual paper feed is single for the SF-2314 and multi for the SF-2414/2514. (The multi paper feed unit (SF-MF14) is an option for the SF-2314 only.)
Page 26: Separation, Transport Section
2. Separation, transport section 4. Developer section After passing the resist roller section, the paper is transported to the 4-1. General descriptions transfer section. After transfer, the paper is separated from the drum by the separation electrode and the drum separation pawl, then (1) Two-component developer transported to the fuser section by the transport belt.
Page 27: Optical System
PWB to allow zooming of 0.70 to 1.22 (inch series: 0.64 ∼ 1.29) with 1% increment. (The SF-2314 has no zooming function, and its lens and No.4/No.5 mirror base are fixed.) Copy lamp Reflector No.
Page 28: Lens Drive Shaft
(7) Lens drive shaft 5-2. Basic operations This shaft is to control the optical axis of the lens in zoom copying. (Relationship among the original, the lens and the image in each The lens follows on the slide base shaft. magnification ratio) Normal copy: The distance between the surface of original on the (8) Lens drive wire...
Page 29 (Optical system dirt correction) The mirror base scan speed (mirror motor rpm) The SF-2314/2414 perform dirt correction by changing the copy lamp is changed to zoom. 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.
Page 30: Copy Process
6. Copy process (1) Photoconductor • This model uses OPC (organic photoconductor) as photoconduc- tive material. OPC layer CTL (Electric charge moving layer) CGL (Electric charge generating layer) Aluminum layer (2) Process diagram Original Mirror lens Copy lamp High voltage unit Main corona unit Charging Exposure...
Page 31: Actual Process
(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. Aluminum layer Blank lamp Main corona unit OPC drum Discharge lamp Developer unit Cleaning blade MG roller Seperation pawl...
Page 32 Step 3 (Main Charging) By negative discharging of the main charger, uniform negative char- ges 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. •...
Page 33 Low intensity in Medium intensity HIgh intensity in the area corre- the area corre- in the area corre- sponding to the sponding to the sponding to the darker density medium density lighter density of portion of the portion of the the document document document...
Page 34 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.
Page 35: Potential
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. Blade Aluminum layer Blank lamp Main corona unit Discharge lamp Developer unit Cleaning blade MG roller...
Page 36: Process Correction System
(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 cor- rection 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.
Page 37 2. Optical unit correction (Dirt correction) Referance refrection plate Table glass Diagram of correction system in the optical section AE sensor (Next to the lens) Referance refrection plate Mirror AE SENSOR Copy lamp MAIN CONTROL PWB EE-PROM Timer Copy lamp Arithmetic unit referance control converter...
Page 38: Spf Section (Sf-2514 Only)
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). (Only one set of copies per run) Original takeup roller SPFD...
Page 39 2 Disconnect the CN-B connector of the lower PWB, remove the [6] DISASSEMBLY AND ASSEMBLY paper feed unit fixing screws (4 pcs.), and lift the paper feed unit to remove. The descriptions of this chapter are divided into the following sec- tions: 1.
Page 40: Separation Roller
4 Remove the bearing in the rear frame and remove the paper feed 1-3. Separation roller roller ass’y. 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.
Page 41: Resist Roller
Note for assembly (1): Attach the paper feed roller so that the 3 Remove the clutch, and the gear as shown below: 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 1-5.
Page 42: Transport Belt
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.).
Page 43: Manual Paper Feed Section
Note for assembly (1): When attaching the harness, be careful to 4 Remove the manual arm and the E-ring, and remove the manual the connector color and the lead wire paper feed roller. color. (Carefully refer to the indication on Note: Gear 20T has a positioning pin.
Page 44: Fuser Section
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.
Page 45: Upper Heat Roller Ass'y Removal
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 2 Remove the CL roller springs (2 pcs.) which is fixing the lower separation pawl from the roller and fix it.
Page 46: Scraper Replacement
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 Press this projection to desassemble the front frame side, and remove the paper exit paper guide. Paper exit paper guide 3 Remove the scraper hook section from the paper exit paper guide, and remove the scraper.
Page 47: Optical System
4-2. Copy lamp unit replacement 4. Optical system 1 Remove the manual paper feed unit, the right upper cabinet, the 4-1. Copy lamp replacement 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.
Page 48 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) <Removal> 1 Remove the manual paper feed unit, the right upper cabinet, and the table glass.
Page 49 Note: When the lens drive wire is removed, the magnification adjust- 4-6. Optical unit removal ment and the focus adjustment are required. 1 Remove the drum unit and the developer unit. 2 Remove the right cabinet, the left cabinet, the operation panel, the 4-5.
Page 50 3 Remove the connector and the fixing screw (1 pc.), and remove 4-8. Light adjustment plate/temperature fuse the mirror home position sensor (MHPS) towards the rear frame. removal 4 Remove the connector and the fixing screw and pull out the lens 1 Remove the document glass.
Page 51 4 Remove the SPF motor ass’y fixing screws (4 pcs.) and the CN-C 5. SPF section connector (4 pin) of the SPF control PWB. Then remove the SPF motor ass’y. 5-1. SPF mechanism removal 1 Open the OC cover, and remove the SPF cover fixing screws (5 pcs.).
Page 52 5 Remove four screws from the SPF mechanism, the 2-pin connec- 3 Remove the E-rings (3 pcs.), slide the gear to the clutch once, and tor from the clutch, the 2-pin connector from the SPF cover pull out the pin inside the gear. Then the gear and the paper feed open/close sensor, the CN-C (16-pin) connector from the SPF roller can be removed.
Page 53 5-4. SPF control PWB replacement 1 Remove the SPF upper cover as shown in "5-1- ." 2 Remove three connectors and two screws from the SPF control PWB and remove the PWB. 5-6. Sensor removal 5-5. Clutch/solenoid removal 6 – 15...
Page 54: Developer Section
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 4 Pull out the developer unit. 6. Drum section 6-1.
Page 55 2 As shown in the figure below, open the section which is pressing 7-4. Toner density sensor the cartridge pawl with a screwdriver, and pull out the developer cartridge. 8. Operation panel section/medium 7-3. Toner motor removal cabinet 1 Remove four short screws and one long screw , and the connector, and separate the toner cartridge section.
Page 56 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.
Page 57: Paper Exit Sensor
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.
Page 58: Image Distortion Adjustment
Tie a string to a needle as shown in the figure below. [7] ADJUSTMENTS Hold the string and move the needle to the MG roller. The descriptions of this chapter are divided into the following sec- Mark the point where the needle makes contact with the MG roller.
Page 59 (2) Adjustment of clearance between DV doctor Press the DV doctor in the arrow direction and tighten the DV doctor fixing screw. and MG roller 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 range of 30mm width under the DV doctor fixing screw.
Page 60: Optical Section
2. Optical section A. Adjustments list Adjustment Necessary Ref. Classification Adjustment content value/Standard special tool page value Parts installation Lens Lens unit right angle adjustment — — position Mirror No.4/5 mirror unit right angle — — adjustment No. 4/5 mirror unit drive cam position —...
Page 61 (3)-a Use the test chart (UKOG-0089CSZZ) Make a test chart. (Draw a rectangle or the resolution chart to make a 100% on B4 or 8 1/2" x 14" paper.) copy on B4 or 8 1/2" x 14" paper so that the resolution patterns are copied at the center and the four corners.
Page 62 Change the Sim50-1 set value A so that the difference is 0 ± 1.0 mm ? within the specified range. (SF-2314) Is it the zoom machine ? (8)-a Is the SPF installed ? Set the Sim50-1 set values A and B Make copies at the max.
Page 63 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.
Page 64 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.
Page 65 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.
Page 66 Install the No. 1 and No. 2 scanner units to the specified posi- 2) Remove the document glass. tions, adjust the mechanical horizontal parallelism, and perform 3) Loosen the fixing screw of the No. 1 scanner unit wire. the final adjustment while making copies. II.
Page 67 Without moving the scanner unit drive pulley shaft, manual- Procedures 1) to 8) are for adjustment of mechanical ly turn the scanner unit drive pulley in the same side of the horizontal parallelism. No.1 scanner unit and No.2 scanner loosened setscrew. When it makes contact with No.2 scan- unit are fixed to the specified positions and the mechanical ner unit positioning plate, tighten and fix the setscrew.
Page 68 10) Check the horizontal image distortion. b. Vertical image distortion adjustment If LL = LR, there is no horizontal distortion. I. Summary LL and LR = Distance between copy This adjustment is to adjust parallelism of the vertical optical axis horizontal line and the outer edge of the copier and that of each mirror to eliminate vertical image of the black background...
Page 69 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. 1) Set the test chart for image distortion adjustment on the If the copy image is tilting as shown in sample (X) below, document glass, and make a normal copy on a paper of A4 lower No.4/5 mirror unit.
Page 70 III. Note 5) Remove the right side cabinet and the document reference Before performing this adjustment, the following adjustment plate. must have been completed. If not, this adjustment cannot be Document performed properly. reference plate * Lens unit right angle adjustment Document table glass * No.4/5 mirror unit right angle adjustment * Image distortion adjustment...
Page 71 VII. Troubles caused by improper adjustment 4) Remove the right cabinet and the document reference plate. Document reference plate (5) Focus adjustment (Resolution adjustment) 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 posi- tion to adjust the focus.
Page 72 VII. Troubles caused by improper adjustment IV. Cases when the adjustment is required 1) When the lens and the mirror unit are disassembled or the (6) Copy magnification ratio adjustment part is replaced. The copy magnification ratio adjustment must be performed in the 2) When the scanner unit drive section is disassembled or the vertical direction and in the horizontal direction.
Page 73 (When a 100mm scale is used as the original.) Original scale HARDDENCD STAINLESS JAPAN 1/2mm Shizuoka HARDDENCD STAINLESS Paper feed direction JAPAN 1/2mm Shizuoka Reference Comparison point Copy 5) Calculate the vertical copy magnification ratio. Copy image size Vertical copy magnification ratio = x 100 (%) Original size 6) Check that the actual copy magnification ratio is within the...
Page 74 II. Purpose VI. Adjustment procedure The purpose of this adjustment is to fit the displayed copy mag- (Document table copy mode: Horizontal copy magnification ratio nification ratio with the actual copy magnification ratio. adjustment) III. Note 1) Set the scale on the document table as shown below. (Use a Before performing this adjustment, the following adjustments long scale for precise adjustment.) must have been completed.
Page 75 Repeat procedures 1) to 8) until the horizontal copy magnifica- tion ratio in the normal (100%) copy mode is within the specified range. (SPF copy mode: Horizontal copy magnification ratio ad- justment) 1) Set the copied scale image paper which was made in the horizontal copy magnification ratio adjustment in the docu- ment table copy mode so that the scale image is horizontal in the SPF.
Page 76 Lv: Lead edge void area (In some cases, Lv > = Lv) (Center) Exposare a. Copy image position adjustment (SF-2314/2414) adjusting plate I. Summary In order to adjust the copy image position on a copy paper, the lead edge position of an image on the photoconductor for the...
Page 77 * Test chart Adjustment value A: Corresponds to the time interval from * Black background document (SF-2314) the scanner unit starting and the (Copy image position adjustment) scanner home position sensor OFF to the resist roller ON. 1) Execute simulations 45-1. (C → 0→ 0 → 45 → CB → 1 →...
Page 78 10) Execute simulations 50-1 to make several copies at each of L1: Average distance (mm) from 129% copied paper lead 129% and 64%. (Not required for the SF-2314.) edge to the copy image lead edge 11) Measure the distance from the paper lead edge to the copy...
Page 79 If the difference is out of the above range, change adjust- and repeat procedure 13) until it is within the above range. ment value A and repeat procedures 10) and 12) until the (For the SF-2314, change adjustment value A.) difference is within the above range. Copy scale image...
Page 80 18) Set documents in the SPF, make 100% copies, and check IV. Cases when the adjustment is required that the copy image lead edge is in the range of 0 ± 1mm 1) When the optical section is disassembled or its part is from the paper lead edge position reference.
Page 81 5) Measure the lead edge void area of each copy. 13) Make a copy in the SPF mode and check that the void area is within the specified range. Void area Void area Copy scale image Copy scale image 1/2mm 1/2mm Black background edge Black background edge...
Page 82 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 Void area paper feed lamp and to set the machine to the rear edge void adjustment mode in the manual paper feed mode.
Page 83: A. Test Chart (Uk0G-0162Fczz) Setting
2) Set the adjustment mode to the normal copy mode (Non-toner- KODAK GRAY save mode). SCALE (Press the copy mode select key to light the normal copy mode SHARP CORPORATION lamp.) MADE IN JAPAN Copy mode lamp Copy density display lamp...
Page 84: Copy Density Adjustment
3) Set the density level to "1" with the copy density adjustment key. C. Normal copy mode (Toner save mode) copy density (The currently set copy lamp voltage level will be displayed on the adjustment COPIES SELECTED display.) 1) Set the adjustment mode to the normal copy mode (Toner save mode).
Page 85 F. Auto copy mode (Toner save mode) copy density adjustment Copy mode lamp Copy density display lamp Copy sheet display 1) Set the adjustment mode to the auto copy mode (Toner save mode). EXPOSURE TRAY SELECT COPY RATIO (Press the copy mode select key to light the auto copy mode lamp 129% AUTO ZOOM...
Page 86 A : Auto copy mode N.TS : Non-toner-save mode P : Photo copy mode : Toner save mode (6) Copy density adjustment table N : Normal copy mode Copy mode Mode display Density level Test chart copy density Slightly copied Not copied N.TS Copied...
Page 87 4. Others After replacement, be sure to clean the charger wire with alcohol. (Be sure to use alcohol only.) After wiping with alcohol, wipe with a dry cloth. (1) Transfer charger wire installation Use charger wire of 70µ (DWIR-0466CSZZ). Install the transfer charger wire as shown below. (Clean the charger wire at every 40K copies and replace it at every 80K copies.) Cut the wire at the Transfer charger unit (TC unit)
Page 88: Operating Procedure
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 1. Outline above purpose is achieved with low costs. This model is equipped with the simulations feature which allows the following operations with the keys on the operation panel: 3.
Page 89 4. Purpose list Ref. Purpose Section Main Function page Adjustments Paper feed section Resist amount adjustment Optical section Copy magnification ratio adjustment (zooming) Lead edge void amount setting Copy density (exposure level) adjustment SPF exposure correction AE sensor characteristics value data auto input Front-rear direction magnification ratio adjustment (Vertical direction) Paper transport direction magnification ratio adjustment (Horizontal direction) Lead edge image position adjustment...
Page 90 5. Details of simulations Contents Purpose/kind Section Main Ref. page Description code code Adjustment Paper feed Used to adjust contact pressure between paper and the main body resist roller section 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.
Page 91 Contents Purpose/kind Section Main Ref. page Description code code Adjustment Optical unit Used to adjust the copy density (exposure level) and the copy density gradient 7-26 (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"...
Page 92 Contents Purpose/kind Section Main Ref. page Description code code Adjustment Optical unit Used to store the characteristics of the AE sensor and the optical section for 7-26 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.
Page 93 Contents Purpose/kind Section Main Ref. page Description code code Adjustment Optical unit Used to adjust the copy image position on the copy paper. (Zoom, SPF 7-19 machine) (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.
Page 94 Contents Purpose/kind Section Main Ref. page Description code code Adjustment Developer unit (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.
Page 95 1: CE (Set to 1 for the areas of 200V/50Hz. 1: CE (Set to 0 for the areas of 100V/60Hz.) Paper feed unit Used to set the manual paper feed mode. (SF-2314 only) There are two operation modes: auto and manual. Either of the two can be set. (Operation/procedure) When the simulation key operation is performed, the code number of the currently set operation mode is displayed.
Page 96 Contents Purpose/kind Section Main Ref. page Description code code Setting Fuser unit 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.
Page 97 Contents Purpose/kind Section Main Ref. page Description code code Operation Paper feed unit Used to check the operations of the sensors and detectors in the paper feed check 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.
Page 98 Contents Purpose/kind Section Main Ref. page Description code code Operation Optical unit Used to check the operation of the optical unit and its control circuit. check (Operation/procedure) The operation of simulation 1-3 is repeatedly performed. 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).
Page 99 Contents Purpose/kind Section Main Ref. page Description code code Operation Process Used to display the reference value of the optical system dirt correction. check This value affects the process correction system. For details, refer to the 5-13 descriptions on the process correction system. Used to display the reference value of the optical system dirt correction.
Page 100 6. User simulation B) Auto off mode (The energy-saving effect is greater than the (1) Energy saving function preheat mode. The machine enters this mode after passing a There are two specifications of energy saving: International Energy- certain time from completion of copying. When, however, the Star specifications, and the specifications for the other areas where it machine is temporarily stopped by paper jam, paper empty, toner is not required.
Page 101 Energy-saving mode Auto start from D, E Machine state A. Warmup B. Ready C. Copying D. Preheating E.Auto power G. Reversed F. Resetting (@1) shut off mode (Reset) Operation panel Energy-saving LED Blink Blink Blink Ready lamp Power switch @1: When the copy button is pressed during preheating, the machine enters the state of "G. Reserved." Auto start function Even during warming up or during resetting after completion of ener- gy-saving mode, copy condition can be set and copy reservation can...
Page 102 (3) User program code table [ES conforming area] Selection code: Program Factory setting code Set content 0: NO 1: 30 sec. Auto clear passing 1 2: 60 sec. 2: 60 sec. time setting 3: 90 sec. 4: 120 sec. 0: NO 1: 30 sec.
Page 103 [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 dis- play 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.
Page 104 4. Self diag contents Error code Item Description Ref. page Main Content Scanner feed trouble 8-10 Detail 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.
Page 105 Error code Item Description Ref. page Main Detail The rotary encoder signal cannot be detected for more than 50ms during delivery of the main motor On signal output. Cause 1) Main moor trouble 2) Main control circuit trouble 3) Main motor rotation sensor and its input circuit (main control circuit) trouble 4) Main motor drive mechanism trouble 5) An overload on the main motor drive section Remedy...
Page 106 Error code Item Description Ref. page Main Remedy 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. Content Fuser section thermistor trouble Detail The voltage across the thermistor input circuit remains 4.6V or more for 1500 ms or more.
Page 107 Error code Item Description Ref. page Main Remedy Check the following items: 8-12 1) Main PWB EEPROM 2) Memory control circuit 3) Communication line between main PWB EEPROM and CPU 4) CPU 5) Data bus line After repair, use simulation 16 to cancel the self diag When the power is turned on, data communication is performed with the main PWB EEPROM and the CPU.
Page 108 Error code Item Description Ref. page Main Content Personal counter installation trouble Detail 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. Cause 1) Personal counter trouble 2) Personal counter installation detecting signal input circuit (main PWB) trouble 3) Personal counter wiring...
Page 109 Error code Item Description Ref. page Main SPFJAM Content Document misfeed trouble 8-11 Detail 1) When the document is in the SPF section, a misfeed of copy paper occurs. Cause 1) The document detector in he SPF section remains ON or OFF. 2) The document detector in the SPF section and its input circuit (main PWB) trouble 3) The paper feed and transport clutches in the SPF section and its control circuit (main PWB) trouble...
Page 110 Memory trouble [10] SERVICING AT MEMORY Procedures for memory trouble, main control PWB replacement, TROUBLE AND MAIN and main control PWB EEPROM replacement CONTROL PWB REPLACEMENT "U2" trouble occurs 1. General The control PWB stores various set values, adjustment values, and counter values.
Page 111 Is the toner Use Sim 25-2 to set the density reference value toner density reference value recorded? Make a copy and Is the copy adjust the copy density adjustment Enter the toner density density (Sim 46-1/ value recorded? 51-6) reference value with Sim 73-1. Use Sim 46-1/51-6 to set the Use Sim 43-1 to set the copydensity adjustment value...
Page 112 Are the image lead edge position Make a copy and adjust the adjustment value and image lead efge position and the the resist roller ON resist roller ON timing timing adjustment value recorded? Use Sim 50-1 to set the image lead edge position adjustment value and the resist roller ON timing adjustment value Is the SPF mode...
Page 113 4. Set value recording sheet Contents Purpose/kind Section Main code Sub code Set value Description Adjustment Paper feed section Adjustment value of contact pressure of the paper on the main body resist roller Optical unit Adjustment value (lens shift amount adjustment value) of copy magnification ratio in zoom copying Adjustment value of copy paper lead edge void amount Adjustment value of copy density (exposure level) in each copy...
Page 114 The adjustment value of contact pressure between the SPF resist roller and the document Adjusting value of copy density in the SPF mode 7-28 Setting Specifications Setting the option SF-2314 SF-2414 SF-2514 W/O Personal Counter With Personal Counter Specifications setting by destination Data...
Page 115: Maintenance
Contents Purpose/kind Section Main Default Ref. page Description code code value Setting Fuser unit Setting of the main motor operation mode in warming up. Code Operation Operation mode Normal When the fusing temperature reaches mode the specified level, the main motor stops. Long The main motor keeps rotating until the mode...
Page 116: Electrical Section
[12] ELECTRICAL SECTION 1. System block diagram SPFD SPFM AE PWB MIR.M BL PWB DL PWB MFD1 MFD0 DV UNIT LHPS MHP S SPFC SRRC SP PD SDSW +30V SPOD SPF PWB PERS ONAL MAIN MOTOR MAIN PWB COUNTER CPU, MEMORY, DRIVER OPERATION PWB PSPS +32V...
Page 117: Outline
3. Main circuit (1) Block diagram Multi bypass detection paper Counter Ventilation fan Heater lamp Lower unit Blank lamp transport sensor Operation panel Cooling fan Copy lamp control Discharge lamp Mirror home position sensor SPF fan Power relay Lens home position sensor Paper exit sensor SPF paper transport sensor Transport clutch...
Page 118: Block Diagram
Block diagram Data bus (Even) Data bus (Odd) Data buffer D BH (8) Data buffer D BL (8) Command cue buffer Q0 (8) Command cue buffer Q1 (8) Command cue buffer Q2 (8) Address bus Incrementor (24) Program address register PA (24) Data address register DA (24) Incrementor/decrementor (24) Program counter PC (16)
Page 119 CPU: M37702 (IC110) pin signals Pin No. Port Signal name IN/OUT Description Analog input signal (AE sensor) Lower unit serial parallel IC input 2 port Lower unit serial parallel IC input 2 port MMRE Main motor timer input Power zero cross pulse detection signal MHPS Mirror home position detecting signal ("HIGH at Home position) AEG2...
Page 120 Pin No. Port Signal name IN/OUT Description Transport motor gain signal SPPD Paper entry detecting signal KEY2 Operation PWB key input signal KEY1 Operation PWB key input signal KEY0 Operation PWB key input signal OP-DATA Serial data output to operation PWB —...
Page 121 (4) Heater lamp control circuit 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, com- pares it with the value set by simulations, turns on/off the heater lamp according to the level, and maintain the heat roller surface tempera- ture at a constant level.
Page 122 (5) Driver circuit (Solenoid, magnetic clutch) (6) Stepping motor drive circuit General General The control signals of each load outputted from the CPU and I/O The driver circuit drives the lens drive motor. cannot drive the load directly. The output, therefore, is delivered to A: Stepping motor phase A coil drive signal the load through the driver IC.
Page 123: Outline
(8) Toner supply motor drive circuit Operation After td (= 30msec) from when the voltage exceeds 4.25V after power IC104 is the motor control IC which drives the toner supply motor with rising, the output becomes HIGH. the pulse signals (TMa, TMb) outputted from the I/O chip. "td"...
Page 124 (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.
Page 125 The relationship between the CLV and the pulse ON period is as shown in the figure below: CPU output (CLPWM) 8 or 10 msec Pulse ON (Changeing) 60Hz 50Hz Pluse ON period (msec) • When the pulse ON period is shorter, the CLV becomes higher, and vice versa.
Page 126 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 ∼...
Page 127 (2) Display circuit Control is performed with the data signal and the control signal from the control circuit. Block diagram VD (+10V) VD (+5V) S IN S OUT CLK LATCH STROBE VD (+5V) DATA Main control circuit LATCH VD (+5V) VD (+10V) ENABLE DC power circuit...
Page 128: Power Section
(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...
Page 129 • In the main PWB unit About 32V (VH) CHK JP C103 C144 470uF 63V 22000PF FB105 P-GND +24V (VB) NPN transistor P-GND D101 CHK JP DSS131 Q101 2SD1769 R101 510J 1/2W C142 ZD101 C102 C145 22000PF RD13EB1 47uF 35V 22000PF C143 ZD102...
Page 130 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.
Page 131 © 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.

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