Gestetner A294 Service Manual Download Page 45

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ELECTRICAL COMPONENT DESCRIPTIONS

1-17

A294/A295

erall

Inf

rmat

ion

Symbol

Name

Function

SOL10

Tandem Tray
Connect

Connects/disconnects the two halves of the tandem
tray.

SOL11

Left 1st Tray Lock

Locks the left tandem tray while paper is being
transported from left tray to right tray.

SOL12

Duplex Inverter Gate

Moves the junction gate to direct copies to the duplex
tray or to the paper exit.

SOL13

Reverse Roller

Controls the up-down movement of the reverse roller
in the duplex unit.

SOL14

Inverter Guide Plate

Controls the up-down movement of the inverter feed
guide plate in the duplex unit.

SOL15

Guide Plate

Opens the guide plate when a paper misfeed occurs
around this area.

SOL16

Inverter Gate

Moves the junction gate to direct copies to the
duplex/inverter unit or to the paper exit unit.

Magnetic Clutches

MC1

Toner Supply Coil

Transfers drive from the toner bank motor to the toner
transport coil, to transport toner towards the hopper.

MC2

Toner Supply Roller

Turns the toner supply roller to supply toner from the
toner hopper to the development unit.

MC3

1st Paper Feed

Starts paper feed from tray 1.

MC4

2nd Paper Feed

Starts paper feed from tray 2.

MC5

3rd Paper Feed

Starts paper feed from tray 3.

MC6

Inverter Exit Roller

Releases the drive from the inverter exit roller in the
duplex unit.

MC7

Duplex Transport

Drives the duplex transport rollers to transport the
paper to the duplex feed rollers.

MC8

Duplex Feed

Starts paper feed out of the duplex tray back into the
machine via to the relay rollers.

MC9

1st Vertical
Transport

Drives the 1st vertical transport rollers.

MC10

2nd Vertical
Transport

Drives the 2nd vertical transport rollers.

MC11

3rd Vertical
Transport

Drives the 3rd vertical transport rollers.

MC12

Upper Relay

Drives the upper relay rollers (between tray1 and the
registration rollers)

MC13

LCT Relay

Drives the relay rollers for paper feed into the
machine from the LCT.

MC14

Lower Relay

Drives the lower relay rollers (between paper trays 1
and 2).

PCBs

PCB1

BCU (Base Engine
Control Unit)

Controls all base engine functions both directly and
through other control boards.

PCB2

SICU (Scanner
Image Control Unit)

Controls image processing, the laser diode, and the
polygonal mirror motor.

CÓPIA NÃO CONTROLADA

Summary of Contents for A294

Page 1: ...A294 A295 SERVICE MANUAL 000902MIU RICOH GROUP COMPANIES C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 2: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 3: ...A294 A295 SERVICE MANUAL RICOH GROUP COMPANIES C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 4: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 5: ...A294 A295 SERVICE MANUAL 000902MIU C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 6: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 7: ...PORATION All product names domain names or product illustrations including desktop images used in this document are trademarks registered trademarks or the property of their respective companies They...

Page 8: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 9: ...nual should be either service trained or certified by successfully completing a Ricoh Technical Training Program Untrained and uncertified users utilizing information contained in this service manual...

Page 10: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 11: ...50 2085DP A295 I 32105 Aficio1050 2105DP A294 II 8502 Aficio 1085 2585 A295 II 10502 Aficio 1105 25105 DOCUMENTATION HISTORY REV NO DATE COMMENTS 1 2000 Original Printing 1 7 2000 A295 Addition 2 9 20...

Page 12: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 13: ...FEEDER 2 1 2 1 1 PICK UP ROLLER RELEASE 2 1 2 1 2 BOTTOM PLATE LIFT 2 2 2 1 3 PICK UP AND SEPARATION 2 3 2 1 4 ORIGINAL FEED 2 4 2 1 5 ORIGINAL SIZE DETECTION 2 5 2 1 6 ORIGINAL TRANSPORT 2 6 2 1 7 O...

Page 14: ...PPLY AND RECYCLING 2 61 2 7 1 TONER BANK 2 61 2 7 2 SUPPLYING TONER TO THE DEVELOPMENT UNIT 2 65 2 7 3 TONER HOPPER 2 66 2 7 4 TONER RECYCLING AND WASTE TONER COLLECTION 2 68 2 8 PAPER FEED 2 71 2 8 1...

Page 15: ...2 12 5 SUMMARY 2 124 2 13 OTHERS 2 125 2 13 1 OPERATION UNIT 2 125 2 13 2 DOOR SAFETY SWITCH LOCK TOOLS 2 126 2 13 3 HDD CONTROL 2 127 2 13 4 DATA PATH THROUGH THE INTERFACE BOARD 2 129 INSTALLATION...

Page 16: ...IT 4 4 4 1 10 PAPER FEED 4 4 4 1 11 USED TONER 4 4 4 2 SERVICE PROGRAM MODE 4 5 4 2 1 SERVICE PROGRAM MODE OPERATION 4 5 4 2 2 SERVICE PROGRAM MODE TABLES 4 10 4 2 3 TEST PATTERN PRINTING SP2 902 4 59...

Page 17: ...LLER REPLACEMENT 6 7 6 2 3 FEED BELT REPLACEMENT 6 8 6 2 4 PICK UP ROLLER REPLACEMENT 6 9 6 2 5 SENSOR REPLACEMENT 6 10 6 2 6 TRANSPORT BELT REPLACEMENT 6 14 6 2 7 MOTOR REPLACEMENT 6 15 6 2 8 FEED IN...

Page 18: ...EMENT 6 53 6 7 3 TRANSFER BELT CLEANING BLADE REPLACEMTNT 6 55 6 7 4 TRANSFER BELT BIAS BRUSH REPLACEMENT 6 56 6 8 PAPER FEED 6 57 6 8 1 PAPER TRAY REMOVAL 6 57 6 8 2 PAPER FEED ROLLER REPLACEMENT 6 6...

Page 19: ...ACEMENT 6 100 6 10 6 DUPLEX ENTRANCE SENSOR REPLACEMENT 6 101 6 10 7 DUPLEX TRANSPORT SENSORS 2 3 6 102 6 10 8 DUPLEX TRANSPORT SENSOR 1 DUPLEX INVERTER SENSOR 6 103 6 11 TONER BANK 6 104 6 11 1 WASTE...

Page 20: ...NCTION GATE 8 7 2 2 PAPER PRE STACKING 8 8 2 3 JOGGER UNIT PAPER POSITIONING 8 9 2 4 STAPLER UNIT MOVEMENT 8 10 2 5 STAPLER 8 12 2 6 FEED OUT 8 14 2 7 SHIFT TRAY UP DOWN MOVEMENT 8 15 2 8 SHIFT TRAY S...

Page 21: ...5 2 DETAILED DESCRIPTIONS 9 6 2 1 PAPER FEED 9 6 2 2 PICK UP AND FEED 9 7 2 2 1 OVERVIEW 9 7 2 2 2 PICK UP AND FEED 9 8 2 2 3 SEPARATION ROLLER RELEASE 9 9 2 3 PAPER LIFT 9 10 2 3 1 TRAY DETECTION 9...

Page 22: ...R 11 1 1 2 NEWLY ADDED DEVELOPMENT SUCTION MOTOR AND SUCKED TONER COLLECTION BOTTLE 11 1 1 3 DEVELOPMENT UNIT 11 2 1 4 TONER BANK UNIT 11 3 1 5 CLEANING UNIT 11 3 1 6 FUSING UNIT 11 4 1 7 NEW ADDITION...

Page 23: ...warm up period is completed 6 The inside and the metal parts of the fusing unit become extremely hot while the copier is operating Be careful to avoid touching those components with your bare hands H...

Page 24: ...h CDRH prohibits the repair of laser based optical units in the field The optical housing unit can only be repaired in a factory or at a location with the requisite equipment The laser subsystem is re...

Page 25: ...S FROM A294 I A295 I SERVICE TABLES A294 A295 PREVENTIVE MAINTENANCE A294 A295 REPLACEMENT AND ADJUSTMENT A294 A295 TROUBLESHOOTING A294 A295 3 000 SHEET FINISHER B302 TAB POSITION 2 TAB POSITION 1 TA...

Page 26: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 27: ...OVERALL INFORMATION C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 28: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 29: ...al Trays Europe Asia A5 sideways A3 lengthwise 8 kai sideways 16 kai N America 51 2 x 81 2 sideways 11 x 17 lengthwise LCT Trays 4 6 A4 sideways B5 sideways LT sideways A5 HLT Duplex Tray A5 HLT lengt...

Page 30: ...4 sideways Finisher upper tray face down A294 Less than 5 4 s A295 Less than 4 9 s Finisher upper tray face up A294 Less than 4 1 s A295 Less than 3 8 s Copier face down A294 Less than 4 5 s A295 Less...

Page 31: ...bout 0 95 kW Copying about 2 67 kW about 2 68 kW Maximum less than 2 77 kW less than 2 84 kW A294 Europe Version Mainframe Only Full System 1 Warm up about 1 89 kW about 1 9 kW Stand by about 0 75 kW...

Page 32: ...35 x 1 476 mm 34 3 x 28 9 x 58 1 without options Weight 252 kg without options Optional Equipment Refer to Machine Configuration 1 1 2 ADF Original Size Normal Original Mode A3 to B6 DLT to HLT Thin O...

Page 33: ...e 850 B327 4 A3 DLT Tray Kit Type 850 B331 7 Replaces the tandem LCT CD RW CDROM reader writer B334 5 Punch Unit A812 30 31 32 57 67 Inside the Finisher Connector for the Tandem Copy feature B328 6 Wh...

Page 34: ...y Roller 17 Pick up Roller 18 Vertical Transport Rollers 19 Separation Roller 20 Feed Roller 21 1st Tray Tandem 1 000 sheets each 22 2nd Tray 500 sheets 23 3rd Tray 500 sheets 24 Used Toner Bottle 25...

Page 35: ...Inverter Guide Roller 9 Inverter Sensor 10 Right Tray Exit Roller 11 Right Exit Tray 12 Exit Gate 13 Inverter Roller 14 Exit Sensor 15 Upper Exit Tray 16 Transport Belt 17 Registration Sensor 18 Lower...

Page 36: ...R PATH 1 ADF 2 Optional LCT 3 Tray 3 500 sheet 4 Tray 2 500 sheet Tray 5 Tray 1 Tandem Tray 6 Duplex Unit 7 Finisher 8 Inverter Unit 9 Shift Tray 10 Upper Tray A294V504 WMF 2 4 5 6 7 9 10 3 1 8 C PIA...

Page 37: ...etrieved and sent to the laser diode For multi copy runs the original is scanned once only and stored to the hard disk 2 DRUM CHARGE An OPC organic photoconductor drum is used in this machine In the d...

Page 38: ...e and the transfer belt at the proper time to align the copy paper and the developed image on the drum Then the transfer bias roller and brush apply a high positive charge to the reverse side of the p...

Page 39: ...formation 1 6 DRIVE LAYOUT 1 6 1 COPIER ENGINE 1 Drum Motor 2 Scanner Motor 3 Fusing Duplex Motor 4 Paper Feed Motor 5 Registration Motor 6 Relay Motor 7 Development Motor A294V501 WMF 2 1 3 6 7 5 4 C...

Page 40: ...ransport Motor 5 Upper Exit Roller 6 Feed out Motor 7 Right Exit Roller 8 Transport Belt 9 Lower Transport Roller 10 Upper Transport Roller 11 Separation Roller 12 Feed Belt 13 Pick up Roller 14 Feed...

Page 41: ...Cap Opens and closes the inner cap of the lower toner bottle M11 Charge Corona Wire Cleaner Drives the charge corona wire cleaner M12 Fusing Duplex Drives the fusing unit duplex unit inverter unit and...

Page 42: ...ects the drum surface potential S6 Toner Density TD Detects the amount of toner in the developer S7 Image Density ID Detects the density of the ID sensor pattern on the drum S8 Toner Hopper Detects to...

Page 43: ...top the 1st tray lift motor S33 1st Tray Paper Height 1 Detects the paper height in the 1st tray S34 1st Tray Paper Height 2 Detects the paper height in the 1st tray S35 1st Tray Paper Height 3 Detect...

Page 44: ...ine SW9 Left Front Door Safety 4 Cuts the 5 V LD dc power line SW10 2nd Tray Paper Size Determines the size of paper in tray 2 Also detects when the tray has been placed in the machine SW11 3rd Tray P...

Page 45: ...toner hopper to the development unit MC3 1st Paper Feed Starts paper feed from tray 1 MC4 2nd Paper Feed Starts paper feed from tray 2 MC5 3rd Paper Feed Starts paper feed from tray 3 MC6 Inverter Ex...

Page 46: ...heat to the hot roller L4 Fusing Lamp 3 Provides heat to the hot roller L5 Quenching Neutralizes any charge remaining on the drum surface after cleaning Power Packs PP1 Charge bias grid Provides high...

Page 47: ...t the original size sensors in the copier can check the original size 12 S2 DF Position Detects whether the DF is lifted or not 13 S3 Original Set Detects whether an original is on the table 19 S4 Bot...

Page 48: ...d Cover Detects whether the feed cover is open or not 5 S16 Exit Cover Detects whether the exit cover is open or not 15 Solenoids SOL1 Exit Gate Opens and closes the exit gate 16 SOL2 Inverter Gate Op...

Page 49: ...DETAILED DESCRIPTIONS C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 50: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 51: ...edge of a page passes the entrance sensor while pages remain on the original tray the pick up motor A turns on The cam B rotates away from the pick up roller release lever C The lever then rises and t...

Page 52: ...fts the bottom plate E by raising the lift lever F until the bottom plate position sensor turns on The level of the pick up roller drops as the stack of originals becomes smaller and eventually the bo...

Page 53: ...ed in clutch E turn on When two sheets of originals are fed by the pick up roller the separation roller turns in the opposite direction to the feed belt and the 2nd sheet is pushed back to the origina...

Page 54: ...turns off and the drive for the feed belt is released The original is fed by the transport rollers C At the same time the pick up motor starts again and the pick up roller D is lifted up When the pick...

Page 55: ...to the transport roller generate a pulse signal The CPU counts pulses starting when the leading edge of the original turns on the registration sensor F until the trailing edge of the original turns o...

Page 56: ...ber for the stronger pressure needed for thick originals The other rollers are sponge rollers Normally originals are manually placed at the left rear corner so an original D fed from the DF must also...

Page 57: ...ft scale which aligns the trailing edge to minimize original skew on the exposure glass If thin original mode is selected the original is not forced back against the left scale This is to prevent dama...

Page 58: ...then fed out to the exit tray or fed back to the exposure glass after reversing in the inverter section This DF has two exit trays For single sided original mode the original is fed out to the right...

Page 59: ...er gate solenoid B turn on and the original is fed back to the exposure glass through the inverter roller C exit gate D inverter guide roller E inverter gate F and inverter roller The transport belt m...

Page 60: ...al is fed out to the right exit tray The transport belt motor turns off after the exit sensor B turns off To stack the originals neatly on the exit tray the feed out motor speed is reduced about 30 mm...

Page 61: ...d the original is fed out to the upper tray The transport belt motor turns off when the trailing edge of the original passes through the exit sensor C To stack the originals neatly on the upper tray t...

Page 62: ...e feed out motor turned on 6 The exit sensor is still on when feed out motor has fed the original X mm X original length x 1 3 after the exit sensor turned on Inversion 7 The exit sensor is still off...

Page 63: ...ooling fan D and the SICU cooling fan on the right side of the optics cavity to draw cool air inside The hot air exits through the vents in the upper cover The optics cooling fan is turned on when the...

Page 64: ...d scanner speed is half that of the 1st scanner In reduction or enlargement mode the scanning speed depends on the magnification ratio The returning speed is always the same whether in full size or ma...

Page 65: ...h sensor or one photoelectric device for each length sensor In the width sensor the light generated by the LED is separated into three beams and each beam scans a different point of the exposure glass...

Page 66: ...vated This is when the DF is positioned about 12 cm above the exposure glass At this time only the sensor s underneath the original receive the reflected light and switch on The other sensor s are off...

Page 67: ...cks the IPU Image Processing Unit and the MSU Memory Supercharger Unit These two ICs mainly do the following IPU Auto shading filtering magnification correction gradation processing and video path con...

Page 68: ...and OS4 The analog processing IC performs the following operations 1 Combines the odd and even signals into one line signal 2 Adjust the black reference level of each CCD output channel 3 Amplifies th...

Page 69: ...reference value for A D conversion for the scan line Then the IPU sends the reference value to the A D controller on the SBU When an original with a gray background is scanned the density of the gray...

Page 70: ...changes do not affect the SP mode settings If the user is not satisfied with any of the available settings for this UP mode the technician can adjust the SP modes However the SP mode settings are not...

Page 71: ...icated with an asterisk are not used unless the user selects Service Mode Image Processing Steps Related SP Modes Input Correction 1 SP4903 065 Scanner Gamma Threshold Level SP4903 070 Background Eras...

Page 72: ...ion process However if the user selects Screen Printed dither processing is used Image Processing Path Related SP Modes Input Correction 1 Input Correction 2 SP4903 66 Scanner Gamma Thresh Level SP490...

Page 73: ...Gamma Thresh Level SP4903 072 Background Erase Level SP4906 On Off in Text Photo Mode Input Correction 2 SP4903 062 Independent Dot Erase Level Filtering SP4903 013 to 014 Pre Filter Coefficient SP490...

Page 74: ...p and SP Mode Changed The settings of the SP modes indicated with an asterisk are not used unless the user selects Service Mode Image Processing Path Related SP Modes Input Correction 1 SP4903 068 Sca...

Page 75: ...eted With UP Mode Copy Document Server Features General Features Original Mode Level the user can select Soft Normal Sharp and SP Mode Changed The settings of the SP modes indicated with an asterisk a...

Page 76: ...ck White Level Correction The data is corrected for variations in white level across the main scan To do this a white reference plate is scanned before each original book mode or every 30 s ADF mode T...

Page 77: ...lied to any low image density data that remains after auto shading if the data is lower than a threshold level A The overall effect is to reduce the background in a similar way to that shown by the do...

Page 78: ...ween the value of the object pixels and the average of the surrounding pixel is larger than the threshold level the object pixel is either changed to 0 white or reduced in density The combination of t...

Page 79: ...ads to the occurrence of moir in the image The MTF filter strength can be changed by changing the coefficient MTF Filter Level and strength of the MTF filter in combination using SP mode Refer to the...

Page 80: ...tion can be disabled with SP4 903 5 to test the IPU chip Sub Scan Magnification When the selected magnification is 50 or larger the image magnification in the sub scan direction is changed by changing...

Page 81: ...s faithfully as possible The following processes are used in combination depending on the image mode settings 1 Three gradation processing 2 Four gradation processing 3 Error diffusion 4 Dithering The...

Page 82: ...dither processing is used If the user selects SP Mode Changed then error diffusion or one of three types dither matrix can be selected with SP4 904 002 There are three types of dither matrix 8 x 8 6...

Page 83: ...mw on the drum surface at a wavelength of 785 nm The polygon motor speed is 29 528 rpm There are up to 4 image density levels for each pixel To realize this this machine uses a form of pulse width mo...

Page 84: ...lens 1 E F theta lens 2 F BTL barrel toroidal lens G and mirror H Then these laser beams go to the drum through the toner shield glass I The laser synchronizing detector J determines the main scan st...

Page 85: ...diode as necessary comparing it with the reference levels VREF To apply APC separately to each laser diode using only one photo diode the monitor current is sent in turn to each laser diode This auto...

Page 86: ...y the polygonal mirror motor can be reduced The four laser beams are transferred to the polygonal mirror through a collimating lens When the four laser beams arrive on the drum surface the diameter of...

Page 87: ...example There are four of these on the LDB board Additionally the OUT terminal of the PWM IC is automatically set at a low level to prevent any power from being supplied from the PWM IC to the LDD Eve...

Page 88: ...if the fusing temperature is less than 100 C and SP3 901 is on 1 Potential Sensor Calibration 2 VSG Adjustment 3 VG Grid Voltage Adjustment 4 LD Power Adjustment 5 VREF Update This process is known a...

Page 89: ...potential sensor output that is measured during operation To prevent toner attraction to the drum during calibration 200 V and 700 V are also applied to the development rollers During calibration if...

Page 90: ...target range 900 V 20 V the BCU adjusts VG Grid Voltage through the charge bias grid power pack to get the correct target voltage The most recently detected values can be displayed with SP3 902 2 VD...

Page 91: ...r detects the potential on this pattern The LD power is adjusted until VH becomes 265 V 20 V This is done only during process control initial setting The latest VH can be displayed using SP3 902 3 The...

Page 92: ...40 0 08 9 100 0 04 21 200 0 00 1 8 0 06 4 25 0 12 41 200 0 18 1 2 0 24 1 2 Previous VREF When SC353 or SC354 is generated VREF is not updated The machine uses the current value VREF is updated during...

Page 93: ...ectivity over time The adjustment depends on two factors Amount of toner needed to print the page based on the black pixel amount for the page Readings from the TD sensor A and ID sensor B Sensor cont...

Page 94: ...sor output when checking the drum surface VSP The ID sensor output when checking the ID sensor pattern In this way the reflectivity of both the drum and the pattern on the drum are checked The ID sens...

Page 95: ...tch on time calculation Its value can be 0 1 1 5 2 3 or 4 It is calculated either using VSP VSG if ID sensor control is being used or every copy using VT VREF if TD sensor control is being used see Se...

Page 96: ...tration An organic photoconductor drum diameter 100 mm is used for this model 1 OPC Drum 2 Drum Potential Sensor 3 Pick off Pawl 4 Image Density Sensor 5 Toner Collection Coil 6 Cleaning Brush 7 Clean...

Page 97: ...some timing belts gears the drum drive shaft B and the cleaning unit coupling C The drum motor has a drive controller which outputs a motor lock signal when the rotation speed is out of the specified...

Page 98: ...and controls the amount of negative charge on the drum surface by applying a negative voltage to the grid The charge bias grid power pack A gives a constant corona current to the corona wires 1 200 A...

Page 99: ...B Normally the wire cleaner C is at the front end this is the home position Just after the main switch is turned on the wire cleaner motor turns on to bring the wire cleaner to the rear and then back...

Page 100: ...brush B helps the cleaning blade The brush removes toner from the drum surface and any remaining toner is scraped off by the cleaning blade Toner on the cleaning brush is scraped off by the mylar C a...

Page 101: ...e timing belt A and the cleaning unit coupling B This coupling drives the cleaning brush C directly The cleaning brush then transmits the drive to the gear at the front which drives the toner collecti...

Page 102: ...ase lever B To prevent cleaning blade deformation during transportation the release lever must be locked in the pressure release upper position The guide roller C at the rear end of the cleaning blade...

Page 103: ...fusing unit causes air to flow out of the machine An ozone filter C absorbs the ozone around the drum To keep the temperature inside the machine constant the drum cooling fan and the exhaust fan turn...

Page 104: ...ays contact the drum surface using a light spring pressure They move from side to side during the copy cycle to prevent drum wear at any particular location This movement is made via a shaft A and a c...

Page 105: ...eparation for the next copy cycle light from the quenching lamp A neutralizes any charge remaining on the drum The quenching lamp consists of a line of 16 red LEDs extending across the full width of t...

Page 106: ...develops the image twice The relative speed of each development roller against the drum is reduced The particle diamaters are about 9 5 m for toner and about 70 m for developer Both the DRD system an...

Page 107: ...the cross mixing mechanism In this machine black areas of the latent image are at a low negative charge about 150 V and white areas are at a high negative charge about 950 V The development roller is...

Page 108: ...hopper are driven by the toner supply roller drive gear C when the toner supply roller clutch D activates The above gears are helical gears Helical gears are more quiet than normal gears The teeth of...

Page 109: ...lopment rollers forms the magnetic brush and develops the latent image on the drum The part that is trimmed off by the doctor blade goes to the backspill plate C As the developer slides down the backs...

Page 110: ...ceptacles B and the sleeve roller shafts C The development bias 550V prevents toner from being attracted to the non image areas on the drum where there is residual voltage In addition the development...

Page 111: ...lied from either the upper or lower toner bottle not from both at the same time When the upper toner bottle is supplying toner the upper bottle cap motor B pulls out the toner bottle cap The upper bot...

Page 112: ...near end condition is cleared However if the toner near end sensor C fails to detect toner 10 consecutive times 200 more copies can be made from that bottle then the machine declares it to be empty Wh...

Page 113: ...ine switches back to the first bottle The first bottle is tested now by rotating it 15 times as usual If this bottle is also found to be empty the machine enters the system toner end condition This ti...

Page 114: ...to release the lock mechanism When a toner bottle is being used to supply toner the toner bottle opening rod is pulled to the rear and the lock plate E is lowered by the link F so that the toner bottl...

Page 115: ...e Toner Hopper detects that there is insufficient toner in the hopper the toner bank mechanism is started up If there is toner in the toner entrance tank detected by the toner near end sensor in the t...

Page 116: ...n it moves the toner from front to rear and sends it to the toner supply roller Toner is caught in the grooves in the toner supply roller F Then as the grooves turn past the opening the toner falls in...

Page 117: ...small amount of toner inside the toner hopper and pressure on the toner hopper sensor becomes low the toner hopper sensor outputs a pulse signal once per copy Then the toner bank mechanism supplies mo...

Page 118: ...o the toner entrance tank for recycling Waste toner collection The toner collection coil in the tube B transports the toner collected by the transfer belt unit to the waste toner collection bottle The...

Page 119: ...ollected by the drum cleaning unit to the toner entrance tank B for recycling This toner is dropped into the toner entrance tank and mixed with fresh toner from the toner bottle The toner bank motor C...

Page 120: ...der to turn Then the actuator plate F does not rotate because the waste toner coil drive gear G has a torque limiter and the output of the toner overflow sensor H becomes constant In this condition th...

Page 121: ...3rd trays are universal trays They can each hold 500 sheets of paper All feed stations use an FRR feed system Rotation of the pick up roller A drives the top sheet of paper to the feed B and separati...

Page 122: ...ort rollers and the lower relay roller Drive is transferred to each of the three vertical transport rollers by a vertical transport clutch C and to the lower relay roller by the lower relay clutch D T...

Page 123: ...is detected the lift motor A turns on The coupling gear B on the tray lift motor engages the pin C on the lift arm shaft D then it turns the tray lift arm E to lift the tray bottom plate F For tray 1...

Page 124: ...es the lift sensor E Then the lift motor stops After several paper feeds the paper level gradually lowers and the lift sensor is de activated Then the lift motor turns on again until the lift sensor d...

Page 125: ...the paper feed unit via the timing belt B Then the gear A transmits this drive to the pick up C paper feed D and separation E rollers via gears and the paper feed clutch F The gear A also transmits th...

Page 126: ...y an idle gear G When the separation roller solenoid A turns on the separation roller B contacts the paper feed roller E and turns with the feed roller in spite of the torque limiter in the separation...

Page 127: ...used by friction between the separation roller and the feed roller 2 After paper feed is completed paper sometimes remains between the feed and separation rollers If the feed tray is pulled out in thi...

Page 128: ...M Paper Skew Prevention The paper press arms A on each side press down both sides of the paper especially if the paper is curled This helps to prevent paper skew or jams A294D603 WMF A C PIA N O CONTR...

Page 129: ...ning paper by monitoring the lift motor rotation angle 4 levels End Detection If there is paper in the tray the paper stack lifts the paper end feeler B and the paper end sensor C is deactivated When...

Page 130: ...y the paper size has to be stored with SP5 019 001 For the 2nd and 3rd feed tray universal trays the paper size switch A detects the paper size The paper size switch contains five microswitches The pa...

Page 131: ...ions 2 8 7 TRAY LOCK TRAYS 2 3 When the tray is placed in the paper feed unit the lock lever A drops behind the lock plate B on the support bracket to lock the tray in the proper position A294D618 WMF...

Page 132: ...e left tray automatically transfers to the right tray After the paper transfer to the right tray paper feeding resumes Normally both the right and the left trays are joined together However during cop...

Page 133: ...ect solenoid C turns on to release the tray lock lever so that the left tray separates from the right tray Therefore the left tray can be pulled out to load paper while paper is still being fed into t...

Page 134: ...coupling gear B on the tray lift motor engages the pin C of the lift shaft D The tray wires E are fixed in the slots F at the ends of the tray support rods G H When the lift motor rotates clockwise t...

Page 135: ...paper feeds the paper level gradually lowers then the lift sensor is de activated and the lift motor turns on again until the lift sensor is activated again When the tray is drawn out of the feed unit...

Page 136: ...ght tray the side fence solenoids turn on to open the side fences until the side fence open sensors C activate When the rear fence in the left tray has pushed the stack of paper into the right tray th...

Page 137: ...using the rear fence C to push the paper stack into the right tray When the actuator on the rear fence activates the rear fence return position sensor D the rear fence drive motor turns clockwise unti...

Page 138: ...lock the tray in the proper position Side to side Positioning When the feed tray is set in the paper feed unit the side to side positioning plate C presses the feed tray against the stopper D By movi...

Page 139: ...The vertical transport rollers and the vertical transport idle rollers B on the inner and outer vertical guide plates transport the paper up from each feed unit towards the relay and registration rol...

Page 140: ...ler for feed from the LCT C stays on for a bit longer This delay allows time for the paper to press against the registration rollers and buckle slightly to correct skew Then the registration motor ene...

Page 141: ...some gears Drive is transmitted to the upper registration roller D via two gears E at the front There is a paper dust remover F at the center of the upper registration roller D This is in line with t...

Page 142: ...s the lock lever D on the guide plate to release it from the pin E on the rear side frame Then the guide plate falls open The actuator F on the guide plate activates the guide plate position sensor G...

Page 143: ...ed of the A295 a higher transfer current is applied B Transfer bias roller and transfer belt bias brush Applies transfer voltage to the transfer belt C Transfer belt lift lever driven by a solenoid Li...

Page 144: ...the transfer belt and the drum the transfer belt lift lever E raises the transfer belt into contact with the drum The lift lever is driven by a solenoid Then a positive charge is applied to the trans...

Page 145: ...nd of the transfer belt to adjust the transfer current Then the power pack adjusts It to keep the current through the drum I3 constant even if the paper environmental conditions or transfer belt surfa...

Page 146: ...shed The transfer belt must be released from the drum for the following reasons 1 To prevent the ID sensor pattern on the drum from being rubbed off by the transfer belt because the transfer belt is l...

Page 147: ...aper B a transport fan is not required At the turn in the transfer belt the transfer belt drive roller C discharges the belt to reduce paper attraction and the paper separates from the belt as a resul...

Page 148: ...mpletely removed due to paper dust stuck on the transfer belt cleaning blade A the positively charged cleaning bias roller B attracts the remaining toner The bias roller cleaning blade C scrapes toner...

Page 149: ...s transmitted to the toner collection coil A through idle gears B The toner collection coil C transports the collected toner to the toner recycling unit D and from there it goes to the waste toner col...

Page 150: ...anti condensation heater A is located under the transfer belt unit It turns on when the main switch is off to prevent moisture from forming on the transfer belt The heater is included in the machine...

Page 151: ...tors the hot roller surface temperature through a thermistor D which is in contact with the hot roller s surface A thermofuse E protects the fusing unit from overheating The fusing exit sensor F monit...

Page 152: ...less prone to creasing In addition the lower setting allows more direct access to the gap between the hot and pressure rollers This prevents thick paper from buckling against the hot roller which can...

Page 153: ...om the fusing duplex drive motor B to the gear C which drives the hot roller gear D Rotation passes from the gear C through an idle gear to the exit roller drive section The pressure roller is driven...

Page 154: ...maintain the ready temperature During the copy cycle the three fusing lamps maintain the operating temperature of 188 183 C A294 or 198 193 C A295 If they have to turn on they turn on one at time with...

Page 155: ...SP1 902 1 displays the web consumption When the web consumption exceeds the value set with SP1 902 4 web near end the machine indicates web near end on the operation display The machine still works un...

Page 156: ...ouches black arrows C causing the water in the pipe to vaporize This creates a high speed flow of steam D to the ends of the pipe which are cooler and especially to the rear end E which is well away f...

Page 157: ...sure lever C and lower pressure lever D which are lifted by the fusing unit release lever E via the pressure cam F The pressure can be adjusted by using the pressure adjustment screw G The fusing pres...

Page 158: ...10 8 HOT ROLLER STRIPPER RELEASE For easier jam removal when the hot roller stripper unit A is opened the stripper pawls B turn clockwise to expand the jam removal area A294D008 WMF A B C PIA N O CONT...

Page 159: ...or duplex unit depending on the position of the inverter junction gate A If the page is fed out directly it arrives on the tray face up If the user selected face down output the page goes to the inve...

Page 160: ...d transport rollers B To feed the printed page from the fusing unit straight through to the output tray or finisher the inverter gate solenoid C is energized to lower the inverter junction gate D To f...

Page 161: ...rt section the inverter exit roller clutch D transmits it to the duplex inverter exit section and the duplex feed clutch E transmits it to the duplex paper feed out section The inverter exit roller cl...

Page 162: ...n switch is turned on the jogger motor places the jogger fences at the home position which is determined by monitoring the signal from the jogger home position sensor D When the start key is pressed t...

Page 163: ...es the paper between the rollers The inverter guide plate solenoid D energizes to lower the inverter guide plate E so that the paper is guided by the inverter guide plate The next sheet waits at the i...

Page 164: ...junction gate B to direct the paper to the duplex tray The paper is fed through the duplex tray by duplex transport rollers 1 C 2 D 3 E and the duplex feed roller F If duplex mode is not selected the...

Page 165: ...r at once For a single set duplex copy job the duplex unit stores only one sheet of copy paper For a multi set duplex job the job is stored first then the first set is made using inerleaving Length up...

Page 166: ...x unit 4 The 5th sheet 9th page is fed in 5 The 5th sheet is printed 9th page 6 The 1st sheet is fed out 1st and 2nd pages printed 7 The 5th sheet 9th page is directed to the duplex unit 8 The 6th she...

Page 167: ...The back of the 6th sheet is printed 12th page and fed out 11th and 12th pages 17 The back of the 7th sheet is printed and fed out 13th and 14th pages Longer than A4 Letter Sideways The duplex unit c...

Page 168: ...e back of the 2nd sheet 4th page is printed 7 The 4th sheet 7th page is fed and printed 8 The 2nd sheet 3rd and 4th pages is fed out 9 The back of the 3rd sheet 6th page is printed 10 The 3rd sheet 5t...

Page 169: ...Setting Count Manager AOF If auto off mode is disabled the machine will never enter auto off mode The fusing lamps will always stay on but the machine will still be able to enter energy saver and low...

Page 170: ...tion panel indicators are turned off except for the Energy Saver LED and the Power LED There is only one energy saver level If the CPU receives the image print out command from an application e g to p...

Page 171: ...at Happens in Low Power Mode The fusing lamp drops to 143 C The other conditions are the same as for energy saver panel off mode Return to Stand by Mode The machine returns to standby mode in exactly...

Page 172: ...plies except 5 VE 5 V for energy saver mode turns off At this time only the main power LED is lit Operation Switch Energy Saver LED Fusing Temp System 5 V Main Power LED Off Off Room Temp Fusing lamp...

Page 173: ...itch Energy Saver LED Fusing Temp System 5 V Main Power LED Off Off Room Temp Fusing lamp off Off On NOTE Only 5 VE is supplied to the SICU LED 5 V is supplied to the operation panel from the SICU Ret...

Page 174: ...thin 5 minutes to return Fusing lamp to low temp Energy Saver LED On System 5V On Weekly Timer Off Mode Off Mode Sleep Mode Weekly Timer Off Time Main Power Main Power Auto Off Timer Operation None Ke...

Page 175: ...el is controlled by the LCD controller on the SICU board inside the copier The information on the LCD can be displayed in 256 colors using an 8 bit color scheme 3 bits for R 3 bits for G and 2 bits fo...

Page 176: ...ls can be used to hold the front door safety switches when the front doors are opened 1 When the inner cover is installed the front door safety switches can be held as shown in the illustration A 2 Wh...

Page 177: ...The following table shows the capacity of the hard disks used for each function UP Setting for Memory Allocation HDD 1 Front HDD 2 Rear Copier Priority Copy Jobs 0 82 GB Copy Server Jobs 3 08 GB A294...

Page 178: ...copying is done using the other hard disk There is no disabled function but the productivity will be reduced when image scanning is done during printing If both of the hard disks are defective functio...

Page 179: ...low GACNIU_B An ASIC which handles the data transmission between the memories in the SICU and CD ROM reader writer or the connect copy interface LVDS A noise resistant interface IMACB AN ASIC which co...

Page 180: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 181: ...INSTALLATION C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 182: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 183: ...hine where it will be 1 Subjected to sudden temperature changes 2 Directly exposed to cool air from an air conditioner 3 Directly exposed to heat from a heater 7 Do not place the machine where it will...

Page 184: ...Do not set anything on the power cord 1 Input voltage level NEMA 6 20R North America NEMA 6 20R Receptacle 220 240V 10 60 Hz More than 10A A294 220 240V 10 60 Hz More than 12A A295 Europe Asia Recepta...

Page 185: ...1 Operation Unit 1 2 Upper Cover Operation Unit Holder 1 3 Lower Cover Operation Unit Holder 1 4 Operation Unit Arm 1 5 Right Arm Cover 1 6 Arm Upper Cover 1 7 ADF Exit Tray 1 8 Optics Dust Filter 1 9...

Page 186: ...ew M4 x 12 2 15 Philips Pan Head Screw M4 x 6 1 16 Paper Size Decal 1 17 Decal Face Up 1 18 Nylon Clamp 1 19 White Toner Hopper Drive Gear 1 20 Model Name Plate 10 15 22 machines not shown 1 21 Operat...

Page 187: ...Make sure to plug the cables into the correct sockets A294I025 WMF ADF Rating Voltage of Output Connector for Accessory Max DC 24 V LCT Rating Voltage of Output Connector for Accessory Max DC 24 V FI...

Page 188: ...he shipping retainers after installing the machine They will be reused if the machine is moved to another location in the future 2 Insert the leveling shoes A under the leveling feet B and level the m...

Page 189: ...oam cushion between trays 2 and 3 5 Open the front door and remove the strips of tape 6 Remove the inner cover B 3 screws 7 Remove the blade release pin C and the transfer belt lock plate D 1 screw 8...

Page 190: ...sheet of paper to prevent foreign matter from being attracted to the sleeve rollers 13 Remove the toner hopper D 2 screws 14 Pour in one pack of developer E while turning the knob F Distribute the dev...

Page 191: ...the operation unit 22 Secure the harness clamp D on the operation unit one M4 x 6 pan head screw Pass the harness E through the clamps as shown Then install the operation unit on the arm 4 screws 23...

Page 192: ...8 screw I NOTE Do not use these M4 x 12 screws for securing the other exterior covers They might hit a moving part inside the machine and damage that part 30 Secure the bracket F to the operation unit...

Page 193: ...erform SP2 207 2 using the red gear Because the new toner hopper does not contain any toner using the red gear will fill the toner hopper but will not add toner to the developer Therefore replace the...

Page 194: ...or all paper trays to suit the customer s request 45 Attach the appropriate paper size decals which are included as accessories to each paper tray 46 Attach the face up decal to the ADF 47 Check copy...

Page 195: ...t the following list Description Quantity 1 Front Joint Bracket 1 2 Rear Joint Bracket 1 3 Entrance Guide Plate 1 4 Shift Tray 1 5 Grounding Plate 1 6 Table Extension 1 7 Cushion 1 8 Tapping Screw M3...

Page 196: ...d shipping retainers as shown above 2 Open the front door and remove the shipping retainers Remove the bracket A 2 screws securing the stapler unit 3 Install the front joint bracket B and rear joint b...

Page 197: ...bottom frame of the finisher as shown 6 Install the rear tray as shown B two M4 x 8 screws NOTE The edge of the rear tray should be aligned with the edge of the finisher as shown 7 Attach the cushion...

Page 198: ...k it in place by pushing the locking lever B NOTE Before securing the locking lever make sure that the top edges of the finisher and the copier are parallel from front to rear as shown C 11 Secure the...

Page 199: ...the accessories in the box against the following list Description Quantity 1 Leveling Shoe 3 2 Upper Joint Pin 2 3 Lower Joint Pin 2 4 Decal Paper Size 1 5 Decal Tab Paper End Fence 1 6 Tab Paper End...

Page 200: ...er cord before starting the following procedure 1 Remove the strips of tape on the covers shown in the top position of the illustration 2 Open the LCT left door and remove the strips of tape holding t...

Page 201: ...side cover 6 Remove the two screws that secure the grounding plate D Turn the plate 180 degrees so that left becomes right and vice versa and secure it with the two screws 7 Remove the screw E which s...

Page 202: ...LCT INSTALLATION B303 A294 A295 3 2 SM This page intentionally left blank 3 19A Rev 10 2000 C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 203: ...h to the LCT bottom plate 3 Attach the heater cover C 2 screws 4 Attach the two harness clamps D to the LCT bottom plate as shown 5 Run the heater harnesses E and F through the harness clamps Insert t...

Page 204: ...CT tray heaters are installed Therefore be sure to perform steps 7 10 so that the harnesses remain separated 7 Replace the wire saddle with the new one C P N 11050292 which is included in the optional...

Page 205: ...tor A is connected to the AC drive board the transfer anti condensation drum heater will be turned on along with the other optional heaters Caution Before the heater AC harness connector is plugged in...

Page 206: ...e box against the following list Description Quantity 1 Spacer 2 mm 1 2 Spacer 1 mm 2 3 Stepped Screw Short 1 4 Stepped Screw Long 1 5 Punch Unit Knob 1 6 Spring 1 7 Hopper 1 8 Tapping Screw M4 x 10 2...

Page 207: ...re starting the following procedure Unpack the punch unit and remove the shipping retainers A 4 screws and B 1 screw 1 Remove the inner cover C of the finisher and remove the caps D 2 Remove the rear...

Page 208: ...he other two spacers 1 mm because they are used for adjusting the punch hole position 4 Reinstall the inner cover 5 Install the punch unit B and secure it with a long stepped screw C 6 Install the pun...

Page 209: ...et A 1 short stepped screw 1 spring 9 Connect the cables B as shown 10 Slide the hopper C into the finisher 11 Reassemble the finisher and attach it to the copier Then check the punch unit operation A...

Page 210: ...31 3 6 1 ACCESSORY CHECK Check the quantity and condition of the accessories in the box against the following list Description Quantity 1 A3 DLT Tray 1 2 Short Connector 1 3 Paper Size Decal 1 B331I00...

Page 211: ...remove the front frame A 4 screws and change the side fence positions 1 screw each 1 Open the front cover 2 Draw out the tandem feed tray B fully to separate the right tandem tray C from the left 3 Pu...

Page 212: ...2 screws 6 Remove the front cover B 2 screws 7 Remove the safety switch holders C 1 screw each 8 Connect the short connector D to the terminal for the right tandem tray as shown B331I709 WMF B331I002...

Page 213: ...the screws removed in steps 4 and 5 10 Install the front cover B and safety switch holders C removed in steps 6 and 7 11 Access SP5 019 001 and change the paper size setting to the size required by t...

Page 214: ...the copier as shown 5 Remove the jumper connector F If the optional LCT is not installed The following steps 6 to 8 are for installing the key counter without the optional LCT If the LCT is installed...

Page 215: ...is required to install the key counter with the LCT The cable is supplied with 6 clamps as a service part 9 Remove the small cover A 2 screws on the LCT right cover 10 Remove the LCT right cover B 6...

Page 216: ...ngth 14 Install the stepped screw D 15 Install the right LCT cover then install the key counter assembly E 1 screw that was assembled in steps 1 to 3 16 Connect the cable F from the LCT to the connect...

Page 217: ...emove the short connector E installed on TB101 4 Connect the interface board to the connector on the SICU Then secure the support bracket to the copier 2 screws 5 Connect the cable of the optional equ...

Page 218: ...alling the CD R RW 1 Remove the shorting connector E from connector TB101 of the interface board 2 In order to use the CD R RW firmware version 7 31 3 suffix J or newer must be installed in the copier...

Page 219: ...tle cap using SP5 804 62 upper bottle or 63 lower bottle Then remove the toner bottles from the toner bank 2 Remove the upper rear and lower rear covers 3 Remove the upper left cover lower left cover...

Page 220: ...n close the cylinder top cover 3 Energize the toner bank motor using SP5 804 61 4 Energize the toner bottle motors for 5 to 6 seconds using SP5 804 59 60 5 Energize the toner supply coil clutch using...

Page 221: ...SERVICE TABLES C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 222: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 223: ...drum surface 5 Store the drum in a cool dry place away from heat 6 Take care not to scratch the drum as the drum layer is thin and is easily damaged 7 Never expose the drum to corrosive gases such as...

Page 224: ...ce 3 Use a cotton pad with water or a blower brush to clean the mirrors and lens 4 Do not bend or crease the exposure lamp flat cable 5 Do not disassemble the lens unit Doing so will throw the lens an...

Page 225: ...LOPMENT 1 Be careful not to nick or scratch the development roller 2 Place the development unit on a sheet of paper after removing it from the copier 3 Never disassemble the development roller assembl...

Page 226: ...t roller strippers or their tension springs 3 Do not touch the fusing lamp and rollers with bare hands 4 Make sure that the fusing lamp is positioned correctly and that it does not touch the inner sur...

Page 227: ...e modes and adjust values Service Program Access Procedure Entering SP mode 1 Press the following keys in sequence 4 Hold the key for more than 3 seconds 2 A menu of SP modes is displayed on the LCD N...

Page 228: ...A294 A295 3 Touch the application which you need Then the application s SP mode display will appear as shown Exiting SP mode 1 Touch the Exit keys to return to the standby mode display A294M002 PCX C...

Page 229: ...ice Tables Accessing Copy Mode from within an SP Mode 1 Touch the Copy Mode key 2 Select the appropriate copy mode and make trial copies 3 To return to the SP mode touch the SP mode key A294M003 PCX A...

Page 230: ...SERVICE PROGRAM MODE Rev 9 2001 SM 4 8 A294 A295 C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 231: ...three levels There are two ways to select the program number Ten key Pad Input the required program number Touch Panel 1 Touch the 1st level program 2 Touch the 2nd level program NOTE A mark indicates...

Page 232: ...SERVICE PROGRAM MODE Rev 9 2001 SM 4 10 A294 A295 A294M005 PCX C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 233: ...ode as explained on the previous page 2 Enter the required setting using the ten key pad then touch the Start key or OK key or 7 key NOTE 1 If you forget to touch the Start key or OK key the previous...

Page 234: ...en and before entering the value The specification is 3 2 mm See Replacement and Adjustment Copy Image Adjustments for details Adjusts the printing leading edge registration for the duplex feeding usi...

Page 235: ...2 5 mm Adjusts the printing side to side registration from the 6th paper station using the trimming area pattern SP2 902 3 No 15 6 Tray 6 LCT B Use the key to toggle between and before entering the va...

Page 236: ...fies the amount to raise the fusing temperature from standby mode to print on A4 LT or smaller width paper 0 20 1 C step A294 I II 15 C A295 I II 20 C 1 105 4 Fusing Temperature Correction A4 LT B Spe...

Page 237: ...Changes the web consumption ratio at which web near end is displayed 1 902 4 Web Near End Setting B About 40k A4 copies can be made after the web consumption reaches 100 0 105 1 step A294 A295 I 100...

Page 238: ...when making copies on translucent paper Normally there is no need to adjust this See 2 001 1 600 1 300 10 V step A294 A295 I 1 070 V A294 A295 II 950 V 5 Total Corona Current B Adjusts the current app...

Page 239: ...104 B Selects the LD power for making the ID pattern when auto process control is switched on Do not use unless advised 0 7 1 step 4 Printer Dot Edge Parameter Setting 1 Leading Dot Level Setting Lef...

Page 240: ...ch time Start Turns on the main motor development motor development bias toner supply motor and charge corona Then turns on the toner supply coil clutch to supply toner to the toner hopper but not to...

Page 241: ...After turning the toner supply motor and the toner bank motor on the toner supply coil clutch turns on and off at 2 second intervals The motors and clutch stop when the toner near end sensor in the t...

Page 242: ...ansfer belt between the pages 10 200 1 A step 20 A Cleaning Interval Multiple Copy 1 On Off B Selects whether multiple copy jobs are stopped at regular intervals for the following purposes 1 Stop and...

Page 243: ...t Pattern Prints the test patterns for the IPU chip See section 4 2 3 for how to print test patterns 2 IPU Test Pattern Selection for Scanner This SP mode is useful for finding whether the SICU or the...

Page 244: ...A294 A295 II 0 60 1 mm step 45 mm 2 911 3 Lc OFF B Adjusts the transfer current off timing for example 5 mm is 5 mm after the trailing edge 30 30 1 mm step 0 mm Drum Reverse Rotation Interval 2 912 B...

Page 245: ...control factors 1 Drum potential sensor 2 ID sensor 3 Charge grid voltage by changing VD 4 LD power by changing VH Before using this SP auto process control should be on SP3 901 2 962 B After changin...

Page 246: ...Check Check this mode when Waste toner full pop up message comes up or Near full message is displayed 1 Left Toner Collection Bottle Display whether the used toner collection bottle is full or not 0 N...

Page 247: ...This SP mode should be performed after 1 Replacing or cleaning the ID sensor 2 Replacing the NVRAM or doing an NVRAM clear Start ID Sensor Output Display 1 VSG Displays the current VSG and VSP output...

Page 248: ...is SP2 001 7 value 50 A294 A295 II models only 3 903 B The counter to control the VD correction is automatically reset to 0 zero when SP2 801 is performed 0 999 1 k prints step 100 k prints Scanner S...

Page 249: ...eys 4 015 S The scanner speed fine adjustment is automatically done when the main switch is turned on and the current setting is overwritten 20 20 1 step 0 APS Sensor Output Display 4 301 Displays the...

Page 250: ...S This SP mode is for designer use only Do not use this SP mode 0 255 1 step 170 Checks the AGC gain range of the white level for the first side after adjusting the white level at power up 15 Range A...

Page 251: ...p 36 Black Level Last Side Memory S This SP mode is for designer use only 0 255 1 step 170 Checks the AGC gain value of the white level for the EVEN channel of the first side after adjusting the white...

Page 252: ...tory Setting S This SP mode is for designer use only 0 255 1 step 0 Checks the AGC gain value of the white level for the EVEN channel of the last side after adjusting the white level at power up 67 Ga...

Page 253: ...vel when the main switch is turned on 88 White Reading Value F O ch S This SP mode is for designer use only Displays the white peak level when the main switch is turned on 89 White Reading Value L E c...

Page 254: ...type This SP is ignored unless the user selects Service Mode in UP mode 0 10 1 step 1 Selects the MTF filter coefficient in the main scan direction for 25 49 reduction for text mode Settings 0 to 6 ar...

Page 255: ...e 0 6 1 step 2 Selects the MTF strength in the sub scan direction for 50 154 magnification for text mode 0 Weak 6 Strong 27 Filter Strength Text 50 154 Sub Scan Direction S This SP is ignored unless t...

Page 256: ...6 Strong 34 Filter Strength Text 257 400 Main Scan Direction S This SP is ignored unless the user selects Service Mode in UP mode 0 6 1 step 5 Selects the MTF strength in the sub scan direction for 2...

Page 257: ...0 Selects the MTF strength in the sub scan direction for 25 49 magnification for text areas in text photo mode 0 Weak 6 Strong 42 Filter Strength Text Photo 25 49 Sub Scan Direction S This SP is igno...

Page 258: ...ts the MTF strength in the main scan direction for 155 256 magnification for text areas in text photo mode 0 Weak 6 Strong 49 Filter Strength Text Photo 155 256 Main Scan Direction S This SP is ignore...

Page 259: ...trength for pale original mode 0 Weak 6 Strong 56 Filter Strength in Pale Mode S This SP is ignored unless the user selects Service Mode in UP mode 0 6 1 step 3 Selects the table of the MTF filter coe...

Page 260: ...2 is selected with SP4 903 71 0 255 1 step 0 Adjust the threshold level for the background erase function in text photo mode 67 Scanner Gamma Thresh Level Text Photo S A larger value reduces dirty ba...

Page 261: ...S This SP is ignored unless the user selects Service Mode in UP mode 0 2 1 step 0 Selects the background erase function setting in pale mode 0 Not done 1 Weak background erase the MTF filter is not us...

Page 262: ...Correction Thinner 1 Thinner 2 75 Line Thickness Correction Setting in Generation Mode S Refer Line Width Correction in section 2 0 15 1 step 5 76 Line Thickness Correction Threshold in Generation Mai...

Page 263: ...ker No Correction Thinner 1 Thinner 2 78 Line Thickness Correction Setting in Text Mode S Refer Line Width Correction in section 2 0 15 1 step 5 79 Line Thickness Correction Threshold in Text Mode Mai...

Page 264: ...s correction is applied for a pixel If higher number is selected the effectiveness of the line thickness correction selected with SP4 903 81 becomes stronger 0 5 1 step 2 83 Line Thickness Correction...

Page 265: ...xture Erase Filter Level in Text Photo Mode S Selects the strength of the filter for erasing texture from the image in text photo mode 0 None 1 Weak 2 Strong 0 2 0 20 Thin Line Mode in Laser Writing T...

Page 266: ...value Image Processing Priority in Text Photo Mode Selects either text priority or photo priority for text photo mode Photo priority Background erase is off Letter priority Background erase is on 4 90...

Page 267: ...rmware If the machine detects over 50 bad sectors SC364 will be generated At this time use SP4 911 2 Formats hard disk 1 This takes 4 minutes 2 HDD 1 Formatting S Do not turn off the main power switch...

Page 268: ...sets the bad sector information which is stored in the NVRAM 6 HDD 2 Bad Sector Information Reset This SP should be used when the hard disk is replaced Displays the number of bad sectors there are on...

Page 269: ...ble Count Specifies whether the counter is doubled for A3 11 x 17 paper 5 104 S If 1 is selected the total counter and the current user code counter count up twice when A3 11 x 17 paper is used NO YES...

Page 270: ...justs the page print position for the reverse side when compared to the front side 10 To the right 10 To the left 10 10 mm 1 mm step 0 5 212 4 Page Print Position Up and Down S Adjusts the page print...

Page 271: ...SICU Resets all correction data for process control and all software counters Also returns all modes and adjustments to the default settings Settings for the SICU and BCU can be cleared separately ma...

Page 272: ...representative This number is printed on the SMC print CSS Function RDS Function 5 816 S Japanese version only Do not change the setting CSS PI Device Code RDS Function 5 821 S Japanese version only...

Page 273: ...e Japanese domestic market The following remarks will be added as machine limitations As a general rule the settings should not be changed Printing productivity for the 1st set of originals will be de...

Page 274: ...n for how to print the lists Start DF Registration Adjustment Adjusts the printing side to side registration in the ADF mode 1 Side to Side B Use the key to toggle between and 3 3 0 1 mm step 0 0 mm A...

Page 275: ...5 0 5 mm step 0 0 mm Finisher Free Run 1 Staple Mode The finisher simulates staple mode operation Press 1 to start the free run To stop the free run press 0 6 107 2 Shift Mode The finisher simulates...

Page 276: ...ication Test Tandem Job 6 801 This SP mode is for designer use only Original Non wait Time 6 901 Factory use only Do not change this value 2 Staples in Center Folding 6 902 S Select Yes when a booklet...

Page 277: ...prints by paper size 7 101 172 HLT Lengthwise S Displays the total number of prints by paper size Total Scan Count 7 201 S Displays the total number of scanned originals Original Counter by Size 4 A3...

Page 278: ...opies By Copy Mode 1 Letter S 2 Letter Photo S 3 Photo S 4 Generation S 5 Pale S 6 Punch S 7 Multiple Copy S 8 Sort S 9 Staple S 10 Combine S 11 Erase Copy S 12 Duplex Copy S 13 ADF S 14 Double S 15 2...

Page 279: ...ize 4 A3 S 5 A4 S 6 A5 S 13 B4 S 14 B5 S 32 DLT S 36 LG S 38 LT S 44 HLT S 7 321 128 Other Size S Displays the total number of stored originals in the server by size Copy Server Each Size of Copies 5...

Page 280: ...the copy server Copy Server Copy Number of Each Job 1 Duplex Copy S Displays the total number of duplex prints of one sided originals from the copy server 7 328 2 Duplex Original S Display the total n...

Page 281: ...ode Photo S 4 Original Mode Generation S 5 Original Mode Pale S 6 Punch S 7 Repeat S 8 Sort S 9 Staple S 10 Series S 11 Erase S 12 Duplex Copy S 13 ADF Mode S 14 Double Copy S 15 Duplex Original S 16...

Page 282: ...At Power On S Displays the total number of copy jams by location The information in brackets shows the sensors that are used to detect these jams 3 1st Paper Tray S 1st Paper Feed Sensor 4 2nd Paper...

Page 283: ...sor 55 3rd Paper Tray S 3rd Paper Feed Sensor 56 4th Paper Tray S 4th Paper Feed Sensor 57 5th Paper Tray S 5th Paper Feed Sensor 58 6th Paper Tray S 6th Paper Feed Sensor 59 LCT Relay Sensor S 60 LCT...

Page 284: ...test 7th S 9 Latest 8th S 10 Latest 9th S 11 Original Latest S 12 Latest 1st S 13 Latest 2nd S 14 Latest 3rd S 15 Latest 4th S 16 Latest 5th S 17 Latest 6th S 18 Latest 7th S 19 Latest 8th S 7 507 20...

Page 285: ...s Start to reset Start Copy Counter Clear Paper Tray 1 Paper Tray 1 2 Paper Tray 2 3 Paper Tray 3 4 Paper Tray 4 5 Paper Tray 5 7 816 6 Paper Tray 6 Resets the total copy counter by paper tray These S...

Page 286: ...ter Clear 7 908 Resets SP7 002 2 Start Copy Server Scanned Storage Counter Clear 7 920 Resets the counter of SP7 320 Start Copy Server Original Counter Clear Size 7 921 Resets all counters of SP7 321...

Page 287: ...l 3 Horizontal Line 1 dot 10 Cross Pattern 4 Horizontal Line 2 dot 11 Argyle Pattern 5 Alternating Dot Pattern 12 Frequency Horizontal 6 Grid Pattern 1 dot 13 Frequency Vertical Test Pattern Table SP2...

Page 288: ...per End Sensor 5th tray Not paper end Paper end 3 LCT 1st Paper End Sensor 4th tray Not paper end Paper end 2 3rd Paper End Sensor Not paper end Paper end 1 2nd Paper End Sensor Not paper end Paper en...

Page 289: ...k Lock 5 XFGATE 4 Not used 3 Development Motor Lock No lock Lock 2 Not used 1 Not used 6 0 Toner Supply Motor Sensor Not interrupted Interrupted 7 Left Front Door Safety Switch Door closed Door open 6...

Page 290: ...y Paper Size 3 1 2nd Tray Paper Size 2 11 0 2nd Tray Paper Size 1 See Table 1 7 Not used 6 Not used 5 Not used 4 3rd Tray Paper Size 5 3 3rd Tray Paper Size 4 2 3rd Tray Paper Size 3 1 3rd Tray Paper...

Page 291: ...er Height 1 Paper 0 30 7 Not Used 6 Not Used 5 Not Used 4 Toner Supply Motor Lock No lock Lock 3 Not Used 2 Not Used 1 2nd Tray Paper Height Sensor 2 16 0 2nd Tray Paper Height Sensor 1 See Table 2 7...

Page 292: ...ot Used 1 Not Used 21 0 LCT Connection Connected Not Connected 7 Not Used 6 Not Used 5 Not Used 4 Not Used 3 LCT 1st Tray Paper Height sensor 4 4th tray Paper 80 100 2 LCT 1st Tray Paper Height sensor...

Page 293: ...it 4 Bit 3 Bit 2 Bit 1 Bit 0 A4 A3 Version LT DLT Version 0 1 1 1 1 A3 L 11 x 17 L 0 0 1 1 1 81 4 x 13 81 2 x 14 L 1 0 0 1 1 A4 lengthwise 81 2 x 11 L 0 1 0 0 1 A4 sideways 81 2 x 11 S 0 0 1 0 0 81 2...

Page 294: ...iginal Width Sensor 2 No original Original detected 1 Original Width Sensor 1 No original Original detected 1 0 Original Set Sensor No original Original detected 7 ADF Feed in Motor Encoder Pulse 6 Pi...

Page 295: ...nd Sensor End Not end 3 Staple Hammer HP Sensor HP Not HP 2 Stapler HP Sensor Not HP HP 1 Shift Tray Half turn Sensor HP Not HP 2 0 Jogger Fence HP Sensor Not HP HP 7 Not Used 6 Staple Cartridge Set S...

Page 296: ...Motor 12 LCT 3rd Pick up Solenoid 45 Registration Motor 13 1st Separation Roller Solenoid 46 Oil Supply Cleaning Web Motor 14 2nd Separation Roller Solenoid 47 Guide Plate Solenoid 15 3rd Separation R...

Page 297: ...6 008 No Description 1 Feed in Motor High 2 Feed in Motor Low 3 Transport Motor Forward 4 Transport Motor Reverse 5 Feed out Motor 6 Exit Gate Solenoid 7 Inverter Gate Solenoid 8 DF Indicators 9 Pick...

Page 298: ...NVRAM on the BCU Among the settings that are reset are the correction data for process control and all the software counters Normally this SP mode should not be used This procedure is required only af...

Page 299: ...defaults using the following procedure 1 Make sure that the machine is in the copier standby mode 2 Press the User Tools key 3 Hold down the key and touch the System Setting key 4 A confirmation messa...

Page 300: ...when paper is fed from the corresponding tray These counters should be used as references for part replacement timing 4 1 1 PM COUNTER ACCESS PROCEDURE 1 Press the following keys in sequence Hold the...

Page 301: ...the PM yield indicator setting can be changed To change the setting press Yes No key in the PM yield column When Parts list for PM yield is selected in the parts replacement menu only the parts with...

Page 302: ...counter is cleared the current counter is overwritten to Latest 1 the Latest 1 counter is overwritten to Latest 2 and the Latest 2 counter is overwritten to Latest 3 Additionally the target yield can...

Page 303: ...there is a mark in the Exceed column Each counter can also be cleared on this screen To clear all counters on this screen at once see Counter Clear for Parts Exceeding Target Yield on the next page 3...

Page 304: ...s selected the following appears on the display Press Yes to clear the counters 5 Clear All PM Settings Clears all the PM counters and returns all the settings PM parts list and target yield to the de...

Page 305: ...a list of all the PM part counters When this item is selected the following appears on the display Press Print to print out the counter list 7 CSS Calling Setting RSS Function This function is for Ja...

Page 306: ...parately However both programs should be updated at the same time to prevent mismatching of the programs 1 Turn off the main power switch 2 Remove the flash memory card cover A If the optional LCT is...

Page 307: ...stall on the display to download the BCU software The machine erases the current software then writes the new software to the BCU 6 Turn the main switch off then remove the card from the BCU Download...

Page 308: ...e card will be erased by the following steps 4 Select 3 NVRAM Upload 5 Press EXEC on the display 6 After the download is completed turn the main switch off and remove the flash memory card Download fr...

Page 309: ...ash memory card 4 7 STAMP DATA DOWNLOAD Both hard disks contain the stamp data used with the stamp feature However if a disk is replaced the replacement disk does not have this stamp data The data mus...

Page 310: ...g Copier Document Sever Output Tray Status Indicator Language Priority Screen Color Setting Paper Tray Priority General Features Original F F4 Size Setting Date Time Weekly Timer Monday Weekly Timer T...

Page 311: ...Generation Original Mode Display Paper Tray Display Other Tab Priority Function Setting Image Adjustment Priority Stamp Priority Staple Format Setting Original Tone Display Panel Tone Job End Call Co...

Page 312: ...lex Back Page Number Page Numbering in Combine Mode Copy On Slip In Designate Mode Page Numbering Positive Negative Stamp Setting Page Number Setting Position P1 P2 Position 1 5 2 5 Position 1 2 Posit...

Page 313: ...settings are used for Sharp Normal or Soft mode So when adjusting the Service Mode setting first select a gamma correction setting for the basic image setting using SP4 903 84 1 The following tables...

Page 314: ...0 0 0 Magnification Ratio 257 400 MTF Filter Strength Strong Weak UP mode Sharp Normal Filter Level Text SP4 903 032 13 13 13 9 7 Filter Strength Text Main Scan Direction SP4 903 034 2 1 0 0 0 2 The f...

Page 315: ...ilter Strength Strong Weak UP mode Soft Filter Level Text Main Scan Direction SP4 903 028 0 0 0 0 0 Filter Level Text Sub Scan Direction SP4 903 029 2 2 2 2 2 Filter Strength Text Main Scan Direction...

Page 316: ...oto Main Scan Direction SP4 903 039 13 13 13 9 7 Filter Strength Text Photo Main Scan Direction SP4 903 041 2 1 0 0 0 Magnification Ratio 50 154 MTF Filter Strength Strong Weak UP mode Photo Priority...

Page 317: ...ng Weak UP mode Screened Printed Normal Glossy Photo Pre filter Type Photo Mode SP4 903 012 1 2 1 1 1 7 7 10 Smoothing Filter Photo Mode SP4 903 037 4 4 2 1 0 1 0 0 If the user selects Service Mode to...

Page 318: ...ode SP4 903 055 3 3 3 3 3 3 1 Filter Strength Pale Mode SP4 903 056 6 5 4 3 2 1 0 Generation Mode MTF Filter Strength Strong Weak UP mode Sharp Normal Soft Pre filter Type Generation Mode SP4 903 016...

Page 319: ...otor solenoid drive signal is sent from the BCU to IOB Normally on PSU Number Monitored Signal LED1 On Normal LED2 On Stand by Off Energy saver mode LED3 On Stand by Off Energy saver mode ADF Main Boa...

Page 320: ...ransport motor Reverse 0 0 1 1 Motor Speed Adjustment Automatic 0 1 0 0 Original stop position adjustment Single sided original mode No original skew correction 0 1 0 1 Original stop position adjustme...

Page 321: ...F Board Option Number Description FJ101 T1A250U Protects the 5 V power line If this fuse is broken all the related options are not recognized 4 9 4 VARIABLE RESISTORS ADF Main Board Number Function VR...

Page 322: ...4MB 1 A2309351 Case Flash Memory Card 1 A0069104 Scanner Positioning Pin 4 pcs set 1 54209516 Test Chart OS A3 10 pcs Set 1 A0299387 Digital Multimeter FLUKE 87 1 4 10 2 LUBRICANTS Part Number Descri...

Page 323: ...PREVENTIVE MAINTENANCE C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 324: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 325: ...eld Glass I 300 k Optical cloth LD Filter I 300 k Blower brush White Patch i 300 k Dry cloth DEVELOPMENT UNIT Side Seal I 300 k Blower brush or dry cloth Development Unit i 300 k Blower brush or dry c...

Page 326: ...g Blade R 450 k Cleaning Blade R 300 k Grid Plate r 300 k Charge Corona Wire r 300 k Wire Cleaner r 300 k Wire Cushion r 300 k Pick off Pawls R 300 k Transfer Belt R 450 k Transfer Belt Bias Brush I 4...

Page 327: ...every PM PAPER FEED Relay Roller I 300 k Damp cloth Paper Feed Guide Plate i 300 k Damp cloth Registration Rollers I 300 k Damp cloth Registration Sensor I 300 k Blower brush Relay Sensor I 300 k Blow...

Page 328: ...loth Description Activity Type Interval Note Remarks 3 000 SHEET FINISHER Rollers i 300 k Clean with water or alcohol Brush Roller i 300 k Inspect only Replace if necessary Discharge Brush i 300 k Cle...

Page 329: ...REPLACEMENT AND ADJUSTMENT C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 330: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 331: ...e attempting any of the procedures in this section 6 1 EXTERIOR 6 1 1 FRONT Left Door 1 Open the left door A 2 Remove the stopper B 1 screw 3 Lift up the left door and remove it Right Door 1 Open the...

Page 332: ...A294 A295 6 2 SM 6 1 2 RIGHT Upper Right Cover 1 Remove the upper right cover A 4 screws Lower Right Cover 1 Remove the lower right cover B 4 screws A294R946 WMF B A C PIA N O CONTROLADA C PIA N O CO...

Page 333: ...tional finisher if it is installed 2 Remove the front and rear joint brackets A 2 screws each if the optional finisher was installed 3 Remove the upper left cover B 4 screws Lower Left Cover 1 Remove...

Page 334: ...OR A294 A295 6 4 SM 6 1 4 REAR Upper Rear Cover 1 Remove the upper rear cover A 6 screws Lower Rear Cover 1 Remove the lower rear cover B 6 screws A294R911 WMF B A C PIA N O CONTROLADA C PIA N O CONTR...

Page 335: ...ews Rear Cover Removal 1 Remove the rear cover B 3 screws Left Cover Removal 1 Remove the front cover 2 Remove the grounding wire not shown 1 screw 3 Remove the left cover C 1 screw 2 connectors Upper...

Page 336: ...screws Upper Cover Removal 1 Remove the front and rear covers 2 Remove the original tray 3 Remove the upper cover B 2 screws Bottom Plate Removal 1 Remove the front and rear covers 2 Remove the origin...

Page 337: ...cover 2 Remove the clip A 3 Remove the feed unit B Pull the feed unit to the front release the shaft at the rear and release the front bushing 4 Remove the separation roller cover C 5 Remove the snap...

Page 338: ...belt holder B NOTE The springs C come off the feed belt cover easily 4 Replace the feed belt D NOTE When reinstalling the pick up roller unit make sure that levers E and F on the front and rear origi...

Page 339: ...MENT 1 Open the left cover 2 Remove the two snap rings A 3 Remove the two bushings B 4 Replace the pick up roller C NOTE When reinstalling the pick up roller make sure that the one way clutch D is not...

Page 340: ...left cover 2 Remove the guide plate A 5 screws Entrance Sensor 3 Replace the entrance sensor B 1 connector Length Sensor 3 Remove the length sensor bracket C 1 screw 4 Replace the length sensor D 1 c...

Page 341: ...stration Sensor 1 Release the entrance guide A 2 screws 2 Release the transport belt unit B 3 Remove the sensor bracket C 1 screw 4 Replace the registration sensor D 1 connector 1 screw B301R103 WMF B...

Page 342: ...he front cover 3 Remove the stopper screw A 4 Remove the guide plate B 2 screws 5 Release the front end of the upper transport roller C 1 bushing 1 E ring 6 Remove the sensor unit D 1 screw 7 Replace...

Page 343: ...sensor B 1 connector NOTE When reinstalling the exit guide unit make sure that the guide plate C on the exit unit is over the exit gate D Inverter Sensor 1 Remove the front and rear covers 2 Remove t...

Page 344: ...ssembly extension C 5 Pull off the transport belt D and replace it NOTE When installing the transport belt make sure that the belt runs under the upper and lower belt guide spacers E 6 Using SP6 009 d...

Page 345: ...2 7 MOTOR REPLACEMENT 1 Remove the rear cover Bottom Plate Motor 2 Replace the bottom plate motor A 2 screws 1 connector Pick up Motor 2 Replace the pick up motor B 2 screws 1 connector B301R119 WMF...

Page 346: ...connectors Transport Motor 2 Replace the transport motor B 4 screws 2 connectors Feed out Motor 2 Remove the grounding wire C 1 screw 3 Remove the feed out motor assembly D 2 screws 2 connectors 4 Rep...

Page 347: ...m the pick up roller cam shaft 1 E ring 1 pin 6 Remove the ball bearing G from the feed belt drive shaft 1 E ring 7 Remove the feed in clutch assembly H 5 screws 8 Remove 2 ball bearings I from the fe...

Page 348: ...ve the 2 screws B holding the rear scale 3 Slide the rear scale C in the direction of the arrow then remove it 4 Remove the exposure glass D NOTE When reinstalling the exposure glass make sure that th...

Page 349: ...Remove the lens block B 4 screws 3 connectors 4 After reassembly do the scanner and printer copy adjustment See Replacement and Adjustment Copy Image Adjustment NOTE Do not drive the scanner unit with...

Page 350: ...the exposure glass See Exposure Glass 2 Remove the original width sensor A 1 screw 1 connector 3 Remove the lens cover 8 screws See Lens Block 4 Remove the original length sensors B 1 screw 1 connect...

Page 351: ...emove the front upper cover 7 screws 1 connector See Scanner Motor Removal 3 Remove the lamp regulator cover A 2 screws 4 Remove the exposure lamp B 2 screws 1 connector NOTE When reinstalling the exp...

Page 352: ...re glass See Exposure Glass 2 Remove the lamp regulator cover A 2 screws 3 Slide the holder B in the direction of the arrow Then disconnect the flat cable C 4 Remove the lamp regulator D 2 screws 1 co...

Page 353: ...UNIT SM 6 23 A294 A295 Replacement Adjustment 6 3 6 OPTICS DUST FILTER 1 Remove the original exit tray A 3 screws 2 Remove the optics dust filter B A294R006 WMF A B C PIA N O CONTROLADA C PIA N O CON...

Page 354: ...front upper cover 7 screws 1 connector See Scanner Cover Removal 2 Remove the left upper inner cover A 3 screws 3 Remove the scanner H P sensor bracket B 1 screw 4 Remove the scanner H P sensor C 1 co...

Page 355: ...B holding the belt tension bracket C 5 Remove the 3 screws D securing the scanner motor assembly E 6 Disconnect the two connectors F from the MCU 7 While pushing down the bracket C to release belt te...

Page 356: ...exit tray A 3 screws 3 Remove the scanner front cover B 7 screws 1 connector and the rear upper cover C 6 screws 4 Remove the scanner right cover D 4 screws 5 Remove the bracket E 4 screws 6 Remove th...

Page 357: ...on the middle of the wire on the pulley openings Then wind the wire ball side 3 times and the other side ring side once as shown Secure the pulley with tape to keep this condition 6 Install the pulley...

Page 358: ...ten the tension bracket C 13 Remove the positioning tools After sliding the scanner to the right and left several times set the positioning tools to check the scanner wire bracket and the tension brac...

Page 359: ...ain power switch and unplug the machine before attempting any of the procedures in this section Laser beams can seriously damage your eyes 6 4 1 CAUTION DECAL LOCATIONS There are two caution decals in...

Page 360: ...Do not touch the printed circuit board to avoid damaging the board with static electricity 1 Remove the exposure glass See Exposure Glass Removal 2 Remove the LD cover A 4 screws 3 Remove the LD filte...

Page 361: ...plug the machine 2 Remove the exposure glass See Exposure Glass Removal 3 Remove the LD cover A 4 screws 4 Replace the polygon mirror motor B 3 screws 1 connector NOTE 1 When reinstalling make sure th...

Page 362: ...PLACEMENT 1 Turn off the main power switch and unplug the machine 2 Remove the ground plate A 1 screw 3 Remove the detector cover B 2 screws 4 Replace the laser synchronization detector C 1 screw 1 co...

Page 363: ...ce with bare hands 4 Disconnect the connector of the drum potential sensor B 5 Open the upper drum unit 2 screws C 6 IF the Lot Number for the new drum is __S__XXXXXXXXX 6 5 9 OPC Drum Change Replace...

Page 364: ...tective sheet or a few sheets of paper around the drum to protect it from light 2 Slightly pull up the quenching lamp cable A then release the hook B at the center of the quenching lamp NOTE Do not pu...

Page 365: ...not tighten the plastic screw C too strongly 2 Do not touch the corona wire and grid plate with bare hands 3 Remove the front grid terminal D then the front end block cover E 4 Remove the plate F 5 Re...

Page 366: ...the charge corona wire NOTE Locate the joint part B of the wire in the rear end block as shown After installing new wires reset SP2 001 1 to 2 001 6 corona voltage and current to the defaults Then do...

Page 367: ...drum potential sensor put a few sheets of paper between the sensor and the drum to protect the drum surface 3 Remove the drum potential sensor B and the grounding plate C 2 screws 4 Replace the drum...

Page 368: ...ket F 2 screws 4 Disconnect the connector G 5 Slide the pick off pawl bracket to the rear while turning it counterclockwise as seen from the front The ID sensor is on this bracket NOTE After installin...

Page 369: ...upling gear A 1 screw 3 Remove the bushing B 1 screw 4 Pull the cleaning brush shaft to the rear to release the cleaning brush C then remove the cleaning brush NOTE Do not touch the cleaning brush wit...

Page 370: ...ing ring 4 While pulling the shaft D to the rear turn the pick off pawl shaft about 45 degrees clockwise as viewed from the front in order to move up the pick off pawl 5 Replace the pick off pawl E NO...

Page 371: ...or Change The organic solvent dichloromethane will no longer be used for OPC drum production as part of Ricoh s ongoing efforts through the expanding application of in house environmental management s...

Page 372: ...of the total surface Be sure to apply enough powder to give the area a moderate dusting so that the area turns white If setting powder is not available please apply waste toner in the same manner desc...

Page 373: ...development unit Then turn the paddle roller knob D to empty the remaining developer onto the sheet The knob D allows the paddle roller to be turned counterclockwise only NOTE Dispose of used develop...

Page 374: ...machine 2 Tilt the toner hopper so that there is toner near the toner hopper sensor 9 Turn on the main switch then do developer initial setting SP mode No 2 801 NOTE 1 Do not make any copies with the...

Page 375: ...ove the toner hopper Refer to Developer Replacement 3 Replace the development filter A 4 Remove the central air dust filter cover B 1 hook 5 Replace the central air dust filter C 6 Remove the front ai...

Page 376: ...er entrance seal A 2 screws 2 hooks 3 Replace the front and rear side seals B NOTE When re assembling the development unit use new side seals and align the edges of the side seals with the corner C an...

Page 377: ...nsor clean the development unit well so that no carrier particles remain in the gap between the TD sensor and the development unit casing 3 Install new developer and reassemble the development unit 4...

Page 378: ...A294 A295 6 48 SM 6 6 6 TONER HOPPER SENSOR REPLACEMENT 1 Take out the toner hopper Refer to Developer Replacement 2 Replace the toner hopper sensor A 2 screws 1 connector A294R303 WMF A C PIA N O CON...

Page 379: ...DEVELOPMENT MOTOR REPLACEMENT 1 Turn off the main switch 2 Remove the rear covers Refer to Exterior Cover Removal 3 Remove the fly wheel 3 screws 4 Replace the development motor unit A 4 screws 2 con...

Page 380: ...6 6 8 DEVELOPMENT ROLLER SHAFT CLEANING 1 Take out the development unit Refer to Development Unit Replacement 2 Remove toner and developer from the development roller shafts with teflon tape A294R405...

Page 381: ...ever C counterclockwise take out the transfer belt unit NOTE 1 Do not touch the transfer belt with bare hands 2 Take care not to scratch the drum with the transfer belt unit Be careful when installing...

Page 382: ...ons C 3 After installation check the following points 1 The transfer belt unit must move up and down smoothly 2 Part D of the transfer belt unit must be behind the drum stay 3 Part D of the transfer b...

Page 383: ...transfer belt unit Refer to Transfer Belt Unit Removal 2 While raising the knob A disconnect the two connectors B 3 Turn the transfer belt upper unit C 90 degrees counterclockwise then raise and remov...

Page 384: ...y cloth do not use alcohol 2 Before installing the transfer belt clean the following items with alcohol Belt drive roller C Belt roller D Bias roller E 3 Position the transfer belt at the center of th...

Page 385: ...de A 3 Clean the cleaning bias roller B NOTE When using a vacuum cleaner to protect the transfer power pack from static electricity remove the power pack connectors C 4 Install the new cleaning blade...

Page 386: ...56 SM 6 7 4 TRANSFER BELT BIAS BRUSH REPLACEMENT 1 Remove the transfer belt 2 Remove the transfer belt bias brush holder A 1 screw 3 Replace the transfer belt bias brush B A294R455 WMF A B C PIA N O C...

Page 387: ...Tandem Tray Removal 1 Open the front cover 2 Draw out the tandem feed tray A so that the right tandem tray B fully separates from the left one 3 Push in the right tandem tray 4 Remove the left tandem...

Page 388: ...ail C 2 When re installing the right tandem tray make sure that the tandem tray stopper D is set behind the stopper E on the copier frame 3 Use M4 x 4 screws F for securing the right tandem tray Screw...

Page 389: ...FEED SM 6 59 A294 A295 Replacement Adjustment Universal Tray Removal 1 Draw out the tray 2 Remove the tray A from both guide rails as shown 4 screws A294R711 WMF A C PIA N O CONTROLADA C PIA N O CONTR...

Page 390: ...tion roller C from the torque limiter D 1 snap ring NOTE 1 The paper feed rollers pick up feed separation used in the 1st 3rd feed units in the paper tray unit are different from the rollers used in t...

Page 391: ...ront door 3 Remove the lower right cover Refer to Lower Right Cover Removal NOTE If the LCT is installed remove it from the copier 4 Remove the feed unit cover Refer to Feed Unit Cover Removal 5 Sligh...

Page 392: ...the inner vertical transport guide into the slot C on the main body 9 Disconnect the two connectors D 10 Grasp the 1st or 2nd paper feed unit E and pull it out 2 screws NOTE Before removing the 1st or...

Page 393: ...t clutch B 1 hook 1 connector 13 When re installing the clutches put the stopper C of each clutch on the correct hook on the bracket 14 Remove the paper feed D paper end E or tray lift sensor F as req...

Page 394: ...NCE RETURN SENSOR REPLACEMENT 1 Turn off the main switch 2 Draw out the tandem feed tray 3 Remove the rear bottom plate A 1 screw 4 Replace the rear fence return sensor B 1 connector A294R525 WMF B A...

Page 395: ...urn off the main switch 2 Draw out the tandem feed tray 3 Remove the rear bottom plate A 1 screw 4 Remove the rear fence transport gear B 1 screw 5 Move the rear fence C to the right 6 Remove the rear...

Page 396: ...ve the inner cover A 2 screws 4 Remove the side fences B 1 screw each NOTE When putting back the side fences make sure that the position of the side fences is correct A4 Outer LT Inner 5 Remove the bo...

Page 397: ...Paper Tray Removal 2 Remove the inner cover 2 screws See Right 1st Tray Paper Sensor Removal 3 Remove the sensor bracket B 3 screws 4 Slightly lift the front bottom plate and unhook the wire stoppers...

Page 398: ...installing the bottom plate lift wire 1 Set the positioning pin A in the hole B and set the projection C in the hole D 2 Position the wire as shown E 3 Do not cross the wires A294R061 WMF E D B A C C...

Page 399: ...the development unit Refer to Development Unit Removal 2 While pushing down the hook lever A remove the paper dust remover B 3 Remove the paper dust inside the paper dust remover and clean inside it...

Page 400: ...OR CLEANING 1 Remove the lower right inner cover A 4 screws 3 knobs 2 Disconnect the connector B 3 Pull out the registration sensor assembly C 4 Clean the photo sensor D with a blower brush A294R937 W...

Page 401: ...switch 2 Remove the lower rear cover See Exterior 3 Remove the PSU 5 screws all connectors See Boards and Other Items 4 Disconnect the connector A 5 Remove the tray size switch bracket B 2 screws 6 R...

Page 402: ...xterior 3 Remove the PSU 5 screws all connectors and IOB board 4 screws all connectors See Boards and Other Items 4 Remove the tension spring A 5 Remove the upper timing belt B 6 Disconnect the connec...

Page 403: ...Exterior 3 Remove the PSU 5 screws all connectors and IOB board 4 screws all connectors See Boards and Other Items 4 Remove the tension spring A 5 Remove the screw B 6 Remove the lower timing belt C...

Page 404: ...per and lower timing belts Follow steps from 1 to 5 of 1st tray lift motor removal and from 1 to 6 of 2nd and 3rd lift motor removal 2 Remove the paper feed motor A as shown above 4 screws 2 connector...

Page 405: ...3 screws 3 Remove the relay motor B 2 screws 2 connectors 4 Remove the clutch stopper C 1 screw 5 Remove the relay clutch D 1 retaining ring 1 connector NOTE When re installing the clutch D put the pi...

Page 406: ...rear cover Refer to Cover Removal 2 Remove the fly wheel 3 screws 3 Remove the timing belt A 4 Remove the bracket B with the motor 3 screws 1 connector 5 Remove the registration motor C 3 screws 1 tim...

Page 407: ...Remove the lower right inner cover Refer to Registration Sensor Cleaning 4 Draw out the duplex unit about 10 cm 5 Remove the LCT relay motor Refer to LCT Relay Motor Removal 6 Remove the upper right c...

Page 408: ...e Exterior 2 Remove the bracket A with the LCT relay sensor 1 screw 1 connector and 1 harness clamp B 3 Remove the LCT relay sensor C 4 Remove the bracket D with the relay sensor 1 screw 1 connector 5...

Page 409: ...m feed 1 Open the front cover 2 Completely pull out the tandem feed tray A so that the right tandem tray B separates from the left tandem tray 3 Remove the right tandem inner cover C 4 Re position the...

Page 410: ...7 Remove the motor cover B 4 screws 8 Re position the side fences C 4 screws each The outer slot position is used when loading A4 size paper 9 Re install the motor cover and the tray cover A294R566 W...

Page 411: ...return position sensor bracket B 1 screw To use the paper tray for A4 size put the screw in the left hole as shown For LT size the screw should be placed on the right 12 Re install the rear bottom pl...

Page 412: ...are not aligned from a particular feed station adjusted the side registration by changing the tray cover position for that tray as described below Then adjust the side registration of the image with t...

Page 413: ...inner cover B 2 screws NOTE The oil supply and cleaning web unit is still hot even if the main switch is turned off for servicing 4 Remove the oil supply and cleaning web unit C 1 screw NOTE Make sure...

Page 414: ...right Make sure that the cover does not pinch the thermistor and thermofuse cables against the stay 3 Turn the hot roller stripper unit D clockwise approximately 160 and slide the pivot shaft out of t...

Page 415: ...two bind screws E securing the pressure roller stripper unit F 7 Slide the pressure roller stripper unit F to the right while slightly raising the side near the pressure roller 1 connector G and 1 cl...

Page 416: ...ed 3 Disconnect the three green connectors E for the fusing lamp cables from the terminal on the rear side 4 Disconnect the three white fusing lamp connectors F on the front side NOTE To distinguish t...

Page 417: ...IERTA L55 2 grease when replacing the pressure roller When re installing the three fusing lamps make sure of the following points 1 The three lamps must be parallel inside the hot roller DO NOT CROSS...

Page 418: ...e the oil supply and cleaning web assembly B to the rear while holding the oil supply and cleaning web unit cover C Then remove the oil supply and cleaning web assembly B 5 Remove two bushings D from...

Page 419: ...he oil supply and cleaning web unit cover 3 If the web has a buckle between the web supply roll and web collecting roll turn the web collecting roller gear C clockwise front view until the buckle is p...

Page 420: ...eplace the web cleaning roller A 1 gear 1 bracket 2 bushings and 2 springs NOTE When putting back the gear B the D shaped opening in this gear should face the roller shaft side The circular shaped ope...

Page 421: ...cement Adjustment 6 9 6 HOT ROLLER STRIPPER REPLACEMENT 1 Remove the hot roller stripper unit Follow steps 1 to 3 of hot roller unit removal 2 Replace the hot roller strippers A A294R517 WMF A C PIA N...

Page 422: ...T 1 Remove the pressure roller stripper unit Follow steps 1 to 7 of hot roller unit removal and pressure roller replacement 2 Remove the stripper pawl cover A 2 screws 3 Replace the pressure roller st...

Page 423: ...de plate of the fusing exit 4 Remove the two plate springs E 2 screws and replace the pressure roller cleaning roller 1 spacer F 1 ball bearing G and 1 shaft assembly H NOTE When re installing the pre...

Page 424: ...ws 2 Remove the fusing and exit unit B 4 screws NOTE 1 When putting back the fusing and exit unit hook the cutouts C on the projections D on the right and left slide rails 2 The fusing inner cover pre...

Page 425: ...is not available use a solid black copy on plain paper make the copy with the ADF open the copy will be all black 3 Measure the nip band width the shiny band at both ends 4 It the nip band width is no...

Page 426: ...Pull out the fusing and exit unit 2 Remove the sensor bracket A with the sensor 1 screw 1 connector and 2 clamps 3 Replace the exit sensor B NOTE When putting back the sensor bracket run the cable th...

Page 427: ...L 1 Open the left and right front doors and pull out the duplex unit A 2 Remove the 2 shoulder screws B 3 Lift up the duplex unit NOTE When putting back the duplex unit align the cutouts C with the sl...

Page 428: ...DUPLEX UNIT A294 A295 6 98 SM 6 10 3 DUPLEX UNIT INNER COVER REMOVAL 1 Pull out the duplex unit 2 Remove the duplex unit inner cover A 1 knob and 4 screws A294R802 WMF A C PIA N O CONTROLADA C PIA N O...

Page 429: ...al 2 Remove the duplex grip A 2 screws 3 Remove the E ring B and slide the duplex grip shaft C to the left 4 Remove the jogger motor D 2 screws 1 connector 2 clamps NOTE When putting back the jogger m...

Page 430: ...EX UNIT A294 A295 6 100 SM 6 10 5 DUPLEX UNIT CLUTCH REPLACEMENT 1 Remove the duplex unit 2 Replace each clutch A 1 connector and 1 E ring or 1 clutch stopper A294R854 WMF A C PIA N O CONTROLADA C PIA...

Page 431: ...Adjustment 6 10 6 DUPLEX ENTRANCE SENSOR REPLACEMENT 1 Pull out the duplex unit 2 Remove the entrance sensor bracket A with the sensor 2 screws 3 Replace the duplex entrance sensor B 1 connector A294R...

Page 432: ...he front and rear jogger fences C 1 screw each 4 Remove the upper duplex cover D 1 connector 5 Replace duplex transport sensor 2 E 1 connector 6 Remove the sensor bracket F with duplex transport senso...

Page 433: ...olenoid links 4 Remove the 2 screws B front side shoulder screw securing the left upper cover and slide the left upper cover C to the right and remove it 5 Replace each sensor D 1 connector each NOTE...

Page 434: ...NER BANK 6 11 1 WASTE TONER BOTTLE REMOVAL 1 Remove the toner bank cover A 2 pins 2 Remove the toner bank inner cover B 3 screws 3 Remove the waste toner bottle C A294R901 WMF A294R902 WMF A B C C PIA...

Page 435: ...w steps 1 and 2 of the waste toner bottle removal procedure CAUTION Make sure that the power cord is unplugged before removing the noise filter in the next step 3 Remove the noise filter C 2 screws an...

Page 436: ...95 6 106 SM 5 Remove the two screws A securing the toner transport coil tube 6 While sliding the toner transport coil tube remove the snap ring B A294R907 WMF A294R906 WMF B A C PIA N O CONTROLADA C P...

Page 437: ...nk unit NOTE When pulling out the toner bank unit toner may leak out of the junction between the tube and toner bank Place a cloth on the machine bottom plate so that the plate does not become dirty 1...

Page 438: ...bracket A with the toner supply motor 2 screws 2 connectors and 2 pipes 3 Remove the toner supply motor sensor B 4 Remove the toner supply motor C 2 screws NOTE When putting back the parts make sure...

Page 439: ...1 Remove the toner bank see Toner Bank Unit Removal 2 Remove the toner release link bracket A 2 screws 3 Remove the left side plate B 9 screws and 2 links C NOTE When putting back the links C put the...

Page 440: ...exit tray A 3 screws 4 Remove the scanner right cover B 4 screws 5 Remove the cover bracket C 4 screws 6 Remove the cooling fan bracket D 2 screws 7 Remove the SICU cover bracket E 7 screws 8 Replace...

Page 441: ...screws and 2 connectors each NOTE Connect the black connector to HDD 1 and the gray connector to HDD 2 4 Turn the main switch on and do SP4 911 6 for HDD 1 or SP4 912 6 for HDD 2 NOTE If either SP4 91...

Page 442: ...ws See Exterior 2 Replace the BCU board A 6 screws and 20 connectors 3 Remove the NV RAM B from the old BCU board and install it on the new board NOTE If the screws C are removed the BCU board can be...

Page 443: ...SM 6 113 A294 A295 Replacement Adjustment 6 12 4 I O BOARD 1 Remove the lower rear cover 6 screws See Exterior 2 Replace the I O board A 6 screws and 16 connectors A294R925 WMF A C PIA N O CONTROLADA...

Page 444: ...DS AND OTHER ITEMS A294 A295 6 114 SM 6 12 5 PSU 1 Remove the lower rear cover 6 screws See Exterior 2 Replace the PSU A 4 screws and 8 connectors A294R927 WMF A C PIA N O CONTROLADA C PIA N O CONTROL...

Page 445: ...95 Replacement Adjustment 6 12 6 CHARGE GRID BIAS POWER PACK 1 Remove the upper rear cover 6 screws See Exterior 2 Replace the charge grid bias power pack A 2 screws and 5 connectors A294R915 WMF A C...

Page 446: ...replacement procedure 3 Loosen screw A to release the belt tension 4 Remove the timing belt B 5 Remove the fusing duplex motor C 4 screws 2 hooks D NOTE When putting back the parts hook up the tensio...

Page 447: ...screws 4 Loosen the screws A to loosen the belts and remove the three timing belts B 5 Remove the drum motor C 5 screws 2 connector 1 hook and 1 stopper D NOTE When putting back the parts hook up the...

Page 448: ...ng these printing adjustments Registration Leading Edge 1 Check the leading edge registration using the Trimming Area Pattern and adjust it using SP1 001 if necessary The specification is 3 2 mm Regis...

Page 449: ...dge and right side edge blank margins using the Trimming Area Pattern and adjust them using the following SP modes if necessary SP mode Specification Trailing edge SP2 101 2 3 2 mm Right edge SP2 101...

Page 450: ...between the edges of the black squares The length should be 130 mm 1 If the magnification in the main scan direction is not within 100 0 5 adjust using SP2 909 1 2 If the magnification in the sub scan...

Page 451: ...parallelogram image caused by the printer It should not be applied if the skew is caused by the scanner 1 Check whether a parallelogram image appears as shown on the next page when printing a trimmin...

Page 452: ...attern is down by about 1 mm as shown C the laser unit should be rotated about one graduation in the direction of the black arrow If the opposite side is down adjust in the opposite direction 8 Tighte...

Page 453: ...ide registration and adjust them using the following SP modes if necessary SP mode Leading Edge SP4 010 Side to side SP4 011 Magnification NOTE Use an OS A3 test chart to perform the following adjustm...

Page 454: ...the feed stations 2 Check the registration and adjust using the following SP modes if necessary SP mode Side to side Registration SP6 006 1 Leading Edge Registration Thin original mode SP6 006 2 Leadi...

Page 455: ...ws 1 Press the following keys in sequence to enter operation panel self diagnostic mode Press key 5 times 2 Select 1 Touch Screen Adjust NOTE 2 tests the LEDs on the operation unit not the machine s m...

Page 456: ...using a pointer but not sharp tool 4 Touch a few spots on the LED touch panel and confirm that the marker appears on the screen at exactly the same location as where it is touched If it does not touc...

Page 457: ...TROUBLESHOOTING C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 458: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 459: ...C can only be reset by turning the main power switch off and on C The copier can be operated as usual except for the unit related to the service call Turn the operation switch off and on D The SC hist...

Page 460: ...scanner home position sensor does not detect the on condition during initialization or copying Possible Causes Scanner home position sensor defective Scanner motor defective MCU defective Scanner hom...

Page 461: ...eed is less than 300 mm s when the scanner home position sensor turns on 2 The scanner motor stops before scanner home position when the scanner returns Possible Causes Scanner motor defective Large l...

Page 462: ...t receive the correct signal from the SBU Possible Causes SICU defective SBU defective Poor connection between SICU and SBU SC300 Charge Corona Output Error 1 Definition B A feedback voltage for the c...

Page 463: ...rge Corona Wire Cleaner Error 1 Definition B The charge corona wire cleaner does not return to its home position Possible Causes Charge corona wire cleaner motor defective BCU defective SC306 Charge C...

Page 464: ...ng process control initial setting 1 000 V is applied to the charge grid but the drum potential sensor detects that VD is more than 970 V Possible Causes Drum potential sensor defective Poor connectio...

Page 465: ...ensor defective Poor connection between the drum potential sensor and the BCU BCU defective Charge bias grid power pack defective SC316 Drum Potential Sensor Error 7 Definition D When adjusting the dr...

Page 466: ...emperature of LD on LDB SC335 Polygonal Mirror Motor Error 1 Definition B The polygonal mirror motor does not reach its operating speed within 20 seconds after the polygonal mirror motor turns on or t...

Page 467: ...tor is turned on or the polygonal mirror motor speed is changed 2 The stop signal from the polygonal mirror motor does not become stable for 20 seconds after the polygonal mirror motor is turned off P...

Page 468: ...BCU defective Toner supply defective SC342 TD Sensor Error 3 Definition B The TD sensor output voltage is not adjusted to 2 5 0 1 V within 20 seconds during TD sensor initial setting Possible Causes...

Page 469: ...ing the ID sensor pattern 1 VSG 2 5 V or VSG 0 V 2 The ID sensor output voltage is 5 0 V and the PWM signal input to the ID sensor is 0 Possible Causes ID sensor defective ID sensor connector defectiv...

Page 470: ...um at the ID sensor pattern writing area SC354 ID Sensor Error 5 Definition D VSG is not adjusted within the target 4 0 0 2 V within 20 seconds during VSG checking Possible Causes ID sensor defective...

Page 471: ...tion between the HDD and SICU The dc power connector to the HDD is disconnected HDD defective SICU defective SC362 Hard Disk Drive Error 3 Definition C The machine does not detect the connection signa...

Page 472: ...lved after turning the main power switch off and on When this SC occurs while performing SP4 912 1 HDD 2 media check it can be cured by doing SP4 912 2 HDD 2 formatting HDD 2 defective SC366 Hard Disk...

Page 473: ...mory within 20 seconds Possible Causes SICU defective Printer controller defective SBU defective SC384 385 Image Data Transfer Timeout in Tandem Mode Definition B The image data could not be transferr...

Page 474: ...except for Document Editor The CD R RW control CPU on the interface board generates an abnormal signal Possible Causes Interface board defective SC397 CD Access Error Definition C All copier function...

Page 475: ...the transfer bias roller is applied Possible Causes Transfer power pack defective Poor connection between the transfer current terminal and the transfer power pack SC430 Quenching Lamp Error Definiti...

Page 476: ...tle Unit Error Definition B The toner hopper sensor cannot detect toner even if the toner supply coil clutch turns on for 2 seconds x 10 times during toner supply during copying Possible Causes Toner...

Page 477: ...tray 1 The 2nd lift sensor is not activated for 10 seconds after the tray lift motor turned on 2 The 2nd lift sensor is already activated when the 2nd tray is placed in the machine Possible Causes 2n...

Page 478: ...d lift sensor is not activated for 10 seconds after the tray lift motor turned on 2 The LCT 2nd lift sensor is already activated when the LCT 2nd tray is placed in the machine Possible Causes LCT 2nd...

Page 479: ...in the tandem tray 1 The rear fence return sensor and the rear fence HP sensor are on at the same time 2 It takes 10 seconds or more for the rear fence return sensor to detect the on condition after...

Page 480: ...rotation Possible Causes Fusing duplex motor defective Too much load on the drive mechanism Poor fusing duplex motor connector connection BCU defective Front door safety switches defective SC532 Relay...

Page 481: ...sing unit connection SC543 Fusing Overheat Error 1 Definition A A fusing temperature of over 220 C is detected for 5 seconds by the fusing thermistor Possible Causes Fusing thermistor defective BCU de...

Page 482: ...s shorter than 7 5 ms is detected 3 times in 500 ms Possible Causes Noise on the ac power line SC550 Oil Supply Cleaning Web End Definition A The oil supply cleaning web end sensor stays on for 500 ms...

Page 483: ...and HDD Controller Definition B The SICU cannot communicate with the HDD controller properly Possible Causes Poor connection between the SICU board and HDD SICU board defective SC620 Communication Err...

Page 484: ...on the interface cable SC630 CSS RSS Communication Error between Line Adapter and CSS Center Japan only SC640 Communication Error between SICU and BCU CH1 1 Definition B The SICU cannot communicate wi...

Page 485: ...onnection between the SICU and BCU boards SICU board defective BCU board defective Noise on the interface cable SC644 Communication Error between SICU and BCU CH2 2 Definition A The BCU cannot receive...

Page 486: ...4 Japanese version only SC701 ADF Pick up Roller Release Malfunction Definition B The pick up roller HP sensor does not activate or de activate when the pick up motor turns on Possible Causes Pick up...

Page 487: ...Original Table Lift Malfunction Definition B One of the following conditions was detected 1 The bottom plate position sensor does not activate when the original table motor lifts the original table 2...

Page 488: ...in time after the staple hammer motor turned on Possible Causes Staple hammer motor defective Staple jam Too much load on the stapling mechanism Poor hammer motor cable connection SC725 Finisher Stack...

Page 489: ...ses Punch motor defective Punch HP sensor defective Poor punch motor connection SC730 Finisher Stapler Motor Error Definition B 1 The stapler HP sensor stays on for longer than normal when the stapler...

Page 490: ...staple waste hopper Staple waste hopper sensor defective SC738 Finisher Shift Tray Lift Motor Error Definition B The stack height sensor does not activate within a certain time after the shift tray l...

Page 491: ...le Causes Software defective SC954 Printer Image Setting Error Definition B The settings that are required for image processing using the printer controller are not sent from the IPU Possible Causes S...

Page 492: ...ctive SICU board defective SC970 Scanner Ready Error Definition B The scan ready signal is not generated by the MCU for more than 10 seconds after the read start signal is sent to the MCU Possible Cau...

Page 493: ...onds Possible Causes HDD 2 defective SICU defective Software defective Poor connection between the SICU and HDD 2 SC986 HDD 1 Data Transfer Error 2 Definition B The data transfer from HDD 1 to the DRA...

Page 494: ...LL CONDITIONS Rev 9 2001 A294 A295 7 36 SM SC990 Software Performance Error Definition B The software performs an unexpected function Possible Causes Software defective C PIA N O CONTROLADA C PIA N O...

Page 495: ...otential Sensor S5 CN609 10 BCU Shorted The machine quits auto process control and goes to auto process control off mode Stays On SC340 is displayed Toner Density S6 CN610 B6 BCU Stays Off SC340 is di...

Page 496: ...is no paper 2nd Paper Feed S18 CN511 A2 IOB Stays Off Paper Jam is displayed whenever a copy is made Stays On Paper Jam is displayed even if there is no paper 3rd Paper Feed S19 CN511 B2 IOB Stays Off...

Page 497: ...almost empty 1st Tray Paper Height 2 S34 CN516 B8 IOB Stays Off Paper Near End is displayed even if there is enough paper in the paper tray Stays On Paper Near End is not displayed even if the tray i...

Page 498: ...made Stays On Paper Jam is displayed even if there is no paper Registration S47 CN602 A9 BCU Stays Off Paper Jam is displayed whenever a copy is made Stays On A paper jam will occur when the guide pl...

Page 499: ...ght Front Door Safety 4 SW5 CN715 2 PSU Shorted Open The door open indicator does not turn off Left Front Door Safety 1 SW6 CN625 3 BUC Shorted The door open condition is not detected Open SC322 is di...

Page 500: ...Vca Vcb In Stand by Condition On On On In Energy Saver Mode On Off Off LED status when a converter is defective Energy saver Off Off Off 1st On Off Off 2nd On On Off When the 1st converter is defecti...

Page 501: ...ff After changing the Firmware SC conditions related to the grid voltage are ignored while the charge corona is off A2945610 B From Dec 99 production 7 1 Details of Errors and modification Ver 7 8 1 1...

Page 502: ...main switch is turned off and on when the tandem rear fence is fully shifted to the right This occurs because the machine recognized that the end fence is between the Rear Fence Return Position sensor...

Page 503: ...4F A2945264F This is to avoid any confusion with the internal handling of the firmware Corrections Ver 7 23 2 1 SC990 Prevention After the setting of SP2 506 is changed to On SC990 occurs in Cover Sli...

Page 504: ...t step for the selecting plain index paper Plain index paper function does not become effective with this modification Tab Stock key and Thick Paper key are indicated in the User Tool Only selecting T...

Page 505: ...n the BICU Firmware is installed Suffix indication was still old when pressing the OK key just after the BICU Firmware was installed A2945604 H A2945264 H From Middle of March 2000 production 7 30 1 C...

Page 506: ...h the lower toner bottle If the upper toner bottle is set first the machine LCD will instruct the operator to set the lower toner bottle first 4 System settings in User Tools Thick paper and tab stock...

Page 507: ...63 with duplex tray feed has been reported from the Japanese domestic field When the paper buckle adjustment SP1 003 3 in the registration nip is too high Z fold jams may occur The tolerance against t...

Page 508: ...LCT 6th LCT Duplex Old 1 5 1 5 1 5 0 0 0 0 New 2 5 2 5 2 5 3 0 9 Transparencies Translucent Sheet As a result of a request from the field the terms used to describe OHP and tracing paper in SP Mode d...

Page 509: ...le cap A2945604 L A2945264 L 7 44 When printing out print documents saved on the Copy Server onto index paper part of the image may be cut off To correct this the software has been changed Copy Server...

Page 510: ...the left tandem tray does not move to right if the left tray is installed when the right tray is empty Papers on left tandem tray not move to right When original jams occur SC numbers in SC history o...

Page 511: ...e memory full condition comes during scanning or SC990 occurs The cause is that the memory clearance is not done properly Memory full after a long period of time when the main switch is kept on The sa...

Page 512: ...opy in the copy mode or print in the document server is being done The stapling is done after 256 512 768 1024 sheets are copied i e if the number of originals is 2 the machine stops after 128 sets ar...

Page 513: ...The first page of the second chapter is printed on the back side of the last page of the first chapter if the number of pages for the first chapter is odd 4 Productivity improvement when using LCT Th...

Page 514: ...This is because the engine does not recognize that the Plokmatic Booklet Finisher is installed Solution Set SP6902 Booklet staple to Yes Set User Tools Copier Document Server Features General Features...

Page 515: ...5609 A A2945269 A 8 3 3 Paper jam in 2nd copy set with duplex 2 position staple and rear cover modes A paper jam occurs in the 2nd set of copies when using the duplex 2 position staple and rear cover...

Page 516: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 517: ...3 000 SHEET FINISHER B302 C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 518: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 519: ...T HLT sideways Staple Mode A3 to B5 DLT to LT Paper Weight No punch mode No staple mode 52 g m2 216 g m2 14 42 lb Staple mode 64 g m2 80 g m2 17 21 lb Punch mode 2 holes 52 g m2 163 g m2 14 42 lb 3 ho...

Page 520: ...ler Capacity pages set 80 g m2 20 lb paper Punch mode No punch mode B5 sideways A4 sideways LT sideways 80 sheets 100 sheets Other sizes 40 sheets 50 sheets Staple Position 5 positions 4 positions sho...

Page 521: ...tion Gate 7 Entrance Rollers 8 Punch Unit 9 Pre stack Junction Gate 10 Punch Waste Hopper 11 Pre stack Tray 12 Stack Plate 13 Staple Waste Hopper 14 Stapler 15 Alignment Brush Roller 16 Positioning Ro...

Page 522: ...S3 Stapler Tray Entrance Detects the copy paper entering the stapler tray and checks for misfeeds S4 Jogger Fence HP Detects the home position of the jogger fence S5 Stapler Tray Paper Detects the co...

Page 523: ...tects the on timing of the stapler return solenoid Switches SW1 Front Door Safety Cuts the dc power when the front door is opened SW2 Shift Tray Upper Limit Cuts the power to the shift tray lift motor...

Page 524: ...ort Roller 3 12 Lower Transport Motor 13 Lower Transport Rollers 2 14 Lower Transport Roller 1 15 Transport Roller 1 16 Entrance Roller 2 17 Entrance Roller 18 Upper Transport Roller 1 19 Upper Transp...

Page 525: ...junction gate solenoid D Upper Tray Mode The stapler tray junction gate solenoid remains off and the tray junction gate solenoid turns on The copies go up to the upper tray Sort Stack Mode The tray j...

Page 526: ...stack tray B This sheet cannot be fed to the stapler yet because the first set is still being stapled The pre stack paper stopper solenoid C turns on about 680 ms after the 1st sheet turns on the ent...

Page 527: ...G move to the waiting position which is approximately 7 mm wider on both sides than the selected paper When the trailing edge of the paper passes the staple unit entrance sensor the jogger motor turns...

Page 528: ...sition If two staple position mode is selected the stapler moves to the front stapling position first then moves to the rear stapling position However for the next copy set it staples in the reverse o...

Page 529: ...on motor rotates the stapler unit to clockwise to remove the staple cartridge C This allows the user to add new staples Once the staples have been installed and the front door closed the stapler unit...

Page 530: ...e number of copies in the set there will be very little for a stack containing 100 sheets The staple waste drops into the tray D in the stapler When the stapler unit returns to its home position the t...

Page 531: ...ected during a copy job the indication will appear and the copy job will stop The staple cartridge has a clinch area D in which jammed staples are left Operators can remove the jammed staples from thi...

Page 532: ...ray exit roller G in order to feed out the leading edge of the copy set smoothly The exit guide motor turns on again a certain time after stapling is complete and the upper exit guide plate is lowered...

Page 533: ...ted by the feeler F This means the tray lowers earlier in staple mode to prevent the next copy suddenly exceeding the space currently available on the tray For both modes the shift tray will rise unti...

Page 534: ...shift motor turns on driving the shift gear disk and the shaft D The end fence E is positioned by the shaft creating the side to side movement When the shift gear disk has rotated 180 degrees when th...

Page 535: ...The punch motor turns on 78 ms after the trailing edge of the paper passes through the entrance sensor B and makes the punch holes The home position is detected by the punch HP sensor C When the cut o...

Page 536: ...peration panel LCD Then the copy job will be stopped After emptying the punch waste and returning the punch waste hopper A to the finisher the copy job will be resumed The punch waste hopper sensor al...

Page 537: ...n the upper transport motor has fed paper 783 ms after the entrance sensor turned on 6 In sort stack mode the shift tray exit sensor does not turn off when the upper transport motor has fed paper 1 5...

Page 538: ...ault 1 0 0 0 Free run A4 sideways staple mode 0 1 0 0 Free run staple and tray shift NOTE Do not use any other settings 3 2 TEST POINTS No Label Monitored Signal TP100 5V 5 V TP101 GND Ground TP102 RX...

Page 539: ...rew and loosen the other screw of the upper hinge for the front door A 2 Remove the front door B Left Inner Cover 1 Remove the front door 2 Remove the left inner cover C 1 screw Inner Cover 1 Remove t...

Page 540: ...1 Remove the left upper cover D Left Lower Cover 1 Remove the left lower cover E Upper Cover 1 Remove the table 2 Remove two stepped screws F 3 Remove the left upper cover 4 Slide across the right co...

Page 541: ...e the shift tray lift gear A manually to lower the shift tray B 3 Remove the shift tray 4 screws Front Shift Tray Cover 1 Remove the front shift tray cover C 1 screw Rear Shift Tray Cover 1 Remove the...

Page 542: ...ENT A294 A295 8 24 SM 4 2 POSITIONING ROLLER REPLACEMENT 1 Open the front door 2 Remove the snap ring A 3 Release the rubber belt B 4 Replace the positioning roller C B302R506 WMF B A C C PIA N O CONT...

Page 543: ...n spring B for the tension bracket C and release the tension of the timing belt 4 Remove the pulley D and ball bearing E 1 E ring each 5 Remove screw F of the inner cover G 6 Open the guide H and a pa...

Page 544: ...Height Sensors 1 and 2 2 Remove the sensor feeler A 1 screw 3 Remove the sensor bracket B 1 screw 4 Replace the stack height sensor 1 C or 2 D 1 connector each Exit Guide Open Sensor 2 Remove the sen...

Page 545: ...er Tray Paper Limit Sensor 2 Remove the sensor cover A 2 screws 3 Remove the sensor bracket B 1 screw 4 Replace the upper tray paper limit sensor C 1 connector Upper Tray Exit Sensor 2 Remove the sens...

Page 546: ...nner cover 4 Release two springs A of the upper exit guide B 5 Release the link C from the cam and remove the upper exit guide 1 plastic clip 1 connector 6 Remove the guide stay D 2 screws 7 Replace t...

Page 547: ...nisher from the copier 2 Remove the sensor bracket A 1 screw 3 Replace the entrance sensor B 1 screw 1 connector Stapler Tray Entrance Sensor 1 Open the front door 2 Remove the sensor bracket C 1 scre...

Page 548: ...Remove two plastic clips from the guide A 3 Open the front door 4 Remove the left vertical transport guide B 5 Remove the middle vertical transport guide C 1 connector 6 Replace the pre stack paper se...

Page 549: ...WASTE HOPPER SENSOR 1 Open the front door and pull out the stapler unit 2 Remove the staple waste hopper A 1 plastic clip 3 Remove the hopper holder B 2 E rings 4 Replace the staple waste hopper senso...

Page 550: ...1 Remove the stapler unit 2 Remove the stapler bracket A 4 screws 2 springs Stapler Rotation HP Sensor 3 Replace the stapler rotation HP sensor B 1 connector Stapler Return Sensor 3 Replace the staple...

Page 551: ...0 Sheet Finisher B302 4 5 STAPLER REMOVAL 1 Open the front door and pull out the staple tray 2 Remove the stapler unit harness cover A 3 Remove the stapler B 1 screw 2 connectors B302R518 WMF B A C PI...

Page 552: ...position is adjusted by SP modes Front to Rear The optional punch units have the following 3 spacers as accessories 1 mm thickness 2 pcs 2 mm thickness 1 pc The punch position can be adjusted by up to...

Page 553: ...er Adjustment 1 A3 2 B4 3 A4 L 4 A4 S 5 B5 L 6 B5 S 7 DLT L 8 LG L 9 LT L 10 LT S 6 120 11 Others S Adjusts the staple jogger positions for each paper size 1 5 1 5 0 5 mm step 0 mm Corrects the follow...

Page 554: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 555: ...LARGE CAPACITY TRAY B303 C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 556: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 557: ...lbs Index Lower Tray 52 to 163 g m2 16 to 40 lbs Bond 50 to 60 lbs Cover 90 lbs Index no Tab Tray Capacity Upper Middle Tray 1 000 sheets 80 g m2 20lb Lower Tray 2 550 sheets 80 g m2 20lb Tab Sheet Av...

Page 558: ...or 3 Separation Roller Solenoid 4 Paper Tray 5 Paper Height Sensors 6 Tray Drive Belt 7 Pick up Roller 8 Separation Roller 9 Paper Feed Roller 10 Grip Roller 11 Relay Roller 12 Relay Sensor 13 Pick up...

Page 559: ...er End Informs the copier when the paper in the 3rd tray has run out S10 1st Paper Height 1 Detects the paper height in the 1st tray S11 1st Paper Height 2 Detects the paper height in the 1st tray S12...

Page 560: ...e transport rollers Solenoids SOL1 1st Pick up Controls up down movement of the pick up roller in the 1st tray SOL2 2nd Pick up Controls up down movement of the pick up roller in the 2nd tray SOL3 3rd...

Page 561: ...Motor 4 Tray Drive Shaft 5 Pick up Roller 6 Tray Drive Belt 7 Separation Roller 8 Paper Feed Roller 9 Grip Roller 10 Transport Rollers 11 Relay Roller Drive Belt 12 Grip Roller Clutch 13 Paper Feed Cl...

Page 562: ...e trays can each hold 1 000 sheets of paper The lower tray can hold 2 500 sheets of paper All feed stations use an FRR paper feed system paper feed roller A separation roller B pick up roller C and th...

Page 563: ...r A in the paper feed unit via the timing belt B Then the gear A transmits the drive to the pick up C paper feed D and separation E rollers via gears and the paper feed clutch F The gear A also transm...

Page 564: ...to the feed roller by an idle gear G When the separation roller solenoid A turns on the separation roller B contacts the paper feed roller E and turns with the feed roller in spite of the torque limi...

Page 565: ...n roller caused by friction between the separation roller and the feed roller 2 After paper feed is completed paper sometimes remains between the feed and separation rollers If the feed tray is remove...

Page 566: ...e belts E are connected to the tray bottom plate F and are driven by the tray lift motor via the lift drive shaft D and tray drive pulleys G When the lift motor turns counterclockwise the tray bottom...

Page 567: ...proper paper feed level the paper pushes up the pick up roller and the actuator C on the pick up roller supporter D activates the lift sensor E to stop the lift motor After several paper feeds the pa...

Page 568: ...aper size switch A detects the paper size The paper size switch contains three microswitches The paper size switch is actuated by an actuator plate B at the rear of the tray Each paper size has its ow...

Page 569: ...p sheet of the paper in the tray by monitoring the reflected light When the paper tray runs out of paper the paper end sensor does not receive the reflected light due to the cutout B Then the tray lif...

Page 570: ...over A 4 screws Front Door 1 Remove the two screws B securing the front side of the top cover 2 While lifting the top cover remove the snap ring C and front door D Rear Cover 1 Remove the rear cover E...

Page 571: ...door and remove the lower inner cover B 3 screws and 1 knob Tray Removal 1 Pull out the tray C and remove it 4 screws Paper Feed Unit Removal 1 Remove the right cover 2 Remove the tray for the paper f...

Page 572: ...torque limiter D 1 snap ring NOTE 1 The paper feed pick up feed separation rollers used in the 1st 3rd feed units in the paper tray unit are different from the feed rollers used in the LCT They are no...

Page 573: ...ENT SM 9 17 A294 A295 3 4 LCT MOTOR REPLACEMENT 1 Remove the rear cover 2 Remove the spring A and disconnect the connector B 3 Remove the motor bracket with the LCT motor C 6 screws B303R109 WMF A C B...

Page 574: ...MENT A294 A295 9 18 SM 3 5 RELAY SENSOR REPLACEMENT 1 Disconnect the LCT from the copier 2 Remove the bracket A 1 screw 3 Replace the relay sensor B 1 connector B303R105 WMF A B C PIA N O CONTROLADA C...

Page 575: ...SENSOR AND PAPER SIZE SWITCH REPLACEMENT 1 Remove the rear cover 2 Remove the right cover 3 Remove the bracket A 1 screw and 4 connectors with the paper height sensors 4 Replace the paper height sens...

Page 576: ...T REPLACEMENT A294 A295 9 20 SM 3 7 MAIN DRIVE BELT REPLACEMENT Route the main drive belt A as shown in the illustration when the main drive belt is removed B303R107 WMF A C PIA N O CONTROLADA C PIA N...

Page 577: ...re not aligned from a particular feed station adjusted the side registration by changing the tray cover position for that tray as described below Then adjust the side registration of the image with th...

Page 578: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 579: ...A3 DLT TRAY KIT B331 C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 580: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 581: ...ORMATION 1 1 SPECIFICATIONS Paper Size A3 B4 DLT LG Lengthwise A4 LT Paper Weight 52 to 163 g m2 16 to 40 lbs Bond 50 to 60 lbs Cover 90 lbs Index no Tab Tray Capacity 1 000 sheets 80 g m2 20lb Remain...

Page 582: ...tray bottom plate A is lifted through the tray wires B by the lift motor C rotation There is no remaining paper capacity detection The operation panel LCD displays full whether there is paper in the...

Page 583: ...plate lift wire The procedure for the two wires is the same 1 Remove the tray 2 Remove the inner cover 2 screws 3 Slightly lift the front bottom plate and unhook the wire stoppers A 2 stoppers B 4 Rem...

Page 584: ...NOTE When re installing the bottom plate lift wire 1 Set the positioning pin A in the hole B and set the projection C in the hole D 2 Position the wire as shown E 3 Do not cross the wires B331R061 WMF...

Page 585: ...DIFFERENCES FROM THE A294 I A295 I MODELS C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 586: ...C PIA N O CONTROLADA C PIA N O CONTROLADA...

Page 587: ...on whenever the development motor is on When air is sucked out of the development unit by the motor there is also some toner included although very minimal A sucked toner collection bottle C has been...

Page 588: ...efault 2 3 Interval 1 1 1 2 1 3 1 4 This SP mode normally does not need to be used However depending on the customer s operating conditions and installation environment the following two symptoms can...

Page 589: ...lating layers A have been added 2 Cleaning brush modification To ensure that Medaka images black spots do not occur the cleaning brush B has been changed to a looped fiber type increasing the efficien...

Page 590: ...ged and the amount of web that is rolled unrolled In addition these gears allow the machine to switch over to a fine precision drive control when the web is full and when it has run out 3 Web rolling...

Page 591: ...or each paper feed tray Since OHP transparencies and thick paper have a relatively high stiffness and are therefore not prone to pawl marks leading edge transfer current control is disabled when eithe...

Page 592: ...y 50V once a certain number of copies have been made default 100K To control this the following SP modes have been added SP3903 Charge Bias Vd Correction Start Setting Sets the starting print counter...

Page 593: ...are set to not indicated Please manually set the PM target values according to the following figures Model Target A294 I A295 I 10m roll All 300K A294 I A295 I Enhancement kit 14m roll US 360K EU 180K...

Page 594: ...he pumps Possible causes Toner supply pump or development suction pump defective Toner supply pump sensor or development suction pump sensor defective BCU defective 3 Change in Photo Mode processing D...

Page 595: ...n A4 LT B Specifies the amount to raise the fusing temperature from standby mode to print on paper of A4 LT width 5 20 1 C step A294 I 10 C A295 I 15 C A294 II 5 C US 10 C EU A295 II 5 C US 15 C EU We...

Page 596: ...s no need to adjust this See 2 001 1 600 1 300 10 V step A294 A295 I 1 070 V A294 A295 II 950 V 2 001 7 VD Auto Process Control B Adjusts the target VD voltage for Process Control Initial Setting 800...

Page 597: ...s this mode But selecting Thick paper in the User Tools does not allow the duplex or punch mode 0 Plain paper 1 Thick paper Toner Density Correction 2 968 B To prevent the image density dropping durin...

Page 598: ...value to 0 zero by pressing 0 and Enter keys when the bottle is replaced XXX hours Toner Supply Interval Adjusts the interval of toner supply Once every how many prints 2 974 The operation of SP2 968...

Page 599: ...k A4 6 Chart Ozone Filter r 1 500 k Carrier Catcher i 300 k Hot Roller Gear I 300 k Grease Barrierta Fusing Web Brake Pad r 600 k 3 1 2 PM PARTS WITH NEW INTERVAL VALUES Description Activity Type Inte...

Page 600: ...collection bottle is incorrectly set Used toner collection bottle or sucked toner collection bottle connector is loose or sensor defective SC591 Toner Supply Motor Lock Definition B The used toner su...

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Gestetner A294, Service Manual

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