Di 1611-2011
Transcript of Di 1611-2011
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3-7
Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004 TROUBLESHOOTING
2.5 Misfeed Detection Timing/Troubleshooting Procedures2.5.1 Misfeed at the Paper Feed Tray/1 Paper Take-up Section
Type DescriptionPaper Take-
Up Sectionmisfeed detec-tion
The leading edge of the paper does not unblock the Synchronizing
Roller Sensor (PC1) even after the lapse of a given period of time afterthe Paper Take-up Solenoid/1 (SL1) has been energized.
Size errordetection
The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid/1 (SL1)
Master Board (PWB-A)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL1 operation check 3-2 PWB-A PJ9A-2 (REM) H-54 Replace PWB-A
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2.5.2 Misfeed at the Manual Bypass Paper Take-up Section
Type DescriptionManual Bypasspaper take-upsection misfeeddetection
The leading edge of the paper does not unblock the SynchronizingRoller Sensor (PC1) even after the lapse of a given period of timeafter the Paper Take-up Solenoid/Bypass (SL2) has been energized.
Size errordetection
The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is blocked before the lapse ofa given period of time.
Paper left at theManual Bypasspaper take-upsection
The Paper Set Sensor/Bypass (PC2) is blocked at timing when thePower Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid/Bypass
Paper Set Sensor/Bypass (PC2)Master Board (PWB-A)
Step Operations Ref. Page
WIRING DIAGRAM
Control signal
Location
(ElectricalComponents)1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL2 operation check 3-2 PWB-A PJ12A-2 (REM) F-64 PC2 sensor check 3-1 PWB-A PJ12A-5 (ON) A-25 Replace PWB-A
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Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004 TROUBLESHOOTING
2.5.3 Misfeed at the Multiple Bypass Paper Take-up Section (When the optional
Multiple Bypass MB-6 is mounted)
Type DescriptionPaper take-up
section mis-feed detection
The leading edge of the paper does not unblock the Synchronizing
Roller Sensor (PC1) even after the lapse of a given period of time afterthe Paper Take-up Solenoid (SL21/MB) has been energized.
Size errordetection
The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-up Solenoid (SL21/MB)
Master Board (PWB-A)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks
2 PC1 sensor check
3-1 PWB-A PJ17A-3 (ON) F-83 SL21/MB operation check 3-2 PWB-A PJ12A-2 (REM) D-164 Replace PWB-A
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Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004TROUBLESHOOTING
2.5.4 Misfeed at the Paper Feed Unit Paper Take-up/Vertical Transport Section
(When the optional Paper Feed Unit PF-126 is mounted)
Type DescriptionPaper take-up/
vertical trans-port sectionmisfeed detec-tion
The leading edge of the paper does not unblock the Synchronizing
Roller Sensor (PC1) even after the lapse of a given period of timeafter the Paper Take-up Solenoid (SL11/PF) has been energized.
Size errordetection
The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is blocked before the lapse ofa given period of time.
Paper left at the
paper take-up/ vertical trans-port section
The Paper Take-up Sensor (PC12/PF) is blocked at timing when the
Power Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Paper Take-Up Solenoid (SL11/PF)
Paper Take-Up Sensor (PC12/PF)Master Board (PWB-A)
Step Operations Ref. PageWIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 SL11/PF operation check 3-2 PWB-A/PF
PJ3A/PF-1A (ON)A-3 (PF-126)
4 PC12/PF sensor check 3-1 PWB-A/PFPJ3A/PF-2B (ON)
I-6 (PF-126)
5 Replace PWB-A
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2.5.5 Misfeed at the Paper Separating Section
Type Description
Paper sepa-rating sectionmisfeed detec-tion
The Exit Paper Sensor (PC3) is not blocked even after the lapse of agiven period of time after the paper has unblocked the SynchronizingRoller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is not blocked even after thelapse of a given period of time after the paper has unblocked the Syn-chronizing Roller Sensor (PC1).
The Synchronizing Roller Sensor (PC1) is blocked before the lapse of agiven period of time after the paper has unblocked the SynchronizingRoller Sensor (PC1).
Paper left atthe paper sep-arating section
The Synchronizing Roller Sensor (PC1) is unblocked at timing whenthe Power Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Exit Paper Sensor (PC3)
Master Board (PWB-A)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 PC3 sensor check 3-1 PWB-A PJ15A-3 (ON) B-44 Replace PWB-A
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2.5.6 Misfeed at the Fusing/Exit Section
Type DescriptionFusing/exit sec-tion misfeeddetection
The Exit Paper Sensor (PC3) is not unblocked even after the lapse ofa given period of time after the Synchronizing Roller Sensor (PC1) hasbeen blocked.
Paper left at thefusing/exit sec-tion
The Exit Paper Sensor (PC3) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.
Relevant Electrical ComponentsSynchronizing Roller Sensor (PC1)Exit Paper Sensor
Master Board (PWB-A)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks 2 PC1 sensor check 3-1 PWB-A PJ17A-3 (ON) F-83 PC3 sensor check 3-1 PWB-A PJ15A-3 (ON) B-44 Replace PWB-A
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2.5.7 Misfeed at the Document Take-up Section (When the optional Automatic
Document Feeder AF-12 is mounted)
Type DescriptionDocument
take-up sectionmisfeed detec-tion
The Separator Sensor (PC4/AF) is not blocked even after the lapse of
a given period of time after the Main Motor (M1/AF) has been ener-gized.
Document leftin the docu-ment take-upsection
The Separator Sensor (PC4/AF) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.
Relevant Electrical ComponentsMain Motor (M1/AF)Separator Sensor (PC4/AF)
Interface Board (PWB/AF)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks
2 M1/AF operation check
3-3 D-6 (AF-12)3 PC4/AF sensor check 3-1 PWB/AF CN2/AF-9 (ON) I-4 (AF-12)4 Replace PWB/AF
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Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004TROUBLESHOOTING
2.5.8 Misfeed at the Document Transport Section (When the optional Automatic
Document Feeder AF-12 is mounted)
Type DescriptionDocument
transport sec-tion misfeeddetection
The Registration Sensor (PC3/AF) is not blocked even after the lapse
of a given period of time after the Main Motor (M1/AF) has been ener-gized.
Document leftin the docu-ment transportsection
The Registration Sensor (PC3/AF) is blocked at timing when thePower Switch is turned ON, the cover is opened and closed, or apaper misfeed or malfunction is reset.
Relevant Electrical ComponentsMain Motor (M1/AF)Registration Sensor (PC3/AF)
Interface Board (PWB/AF)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks
2 M1/AF operation check
3-3 D-6 (AF-12)3 PC3/AF sensor check 3-1 PWB/AF CN2/AF-6 (ON) H-4 (AF-12)4 Replace PWB/AF
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Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004 TROUBLESHOOTING
2.5.9 Misfeed at the Document Exit Section (When the optional Automatic Docu-
ment Feeder AF-12 is mounted)
Type DescriptionDocument exit
section mis-feed detection
The Paper Exit Sensor (PC5/AF) is not blocked even after the lapse of
a given period of time after the Main Motor (M1/AF) has been ener-gized.Document leftin the docu-ment exit sec-tion
The Paper Exit Sensor (PC5/AF) is blocked at timing when the PowerSwitch is turned ON, the cover is opened and closed, or a paper mis-feed or malfunction is reset.
Relevant Electrical ComponentsMain Motor (M1/AF)Paper Exit Sensor (PC5/AF)
Interface Board (PWB/AF)
Step Operations Ref. Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Initial checks 2 M1/AF operation check 3-3 D-6 (AF-12)
3 PC5/AF sensor check 3-1 PWB/AF CN2/AF-12 (ON) H-6 (AF-12)4 Replace PWB/AF
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Di1611/Di2011 FIELD SERVICE Ver.1.0 Mar. 2004TROUBLESHOOTING
3. MALFUNCTIONS The copiers CPU performs a self-diagnostics function that, on detecting a malfunction,
gives the corresponding malfunction code and maintenance call mark on the TouchPanel.
3.1 List of Malfunction CodesMalfunc-
tionCode
Malfunction Name Detection Timing
C0000 Main Motor mal-function
The Main Motor (M1) Lock signal remains HIGH for acontinuous 1-sec. period at any time 1 sec. after theMain Motor has started turning.
C0044
ADF Cooling FanFailure (Only whenthe optional AFR-19 is mounted)
Refer to the option service manual (AFR-19) for details.
C0045 Fusing Cooling FanMotor malfunction
The Fusing Cooling Fan Motor (M3) Lock signal remainsHIGH for a continuous 1-sec. period while the FusingCooling Fan Motor is turning at full speed or deceleratedspeed.
C004EPower Supply Cool-ing Fan Motor mal-function
The Power Supply Cooling Fan Motor (M4) Lock signalremains HIGH for a continuous 1-sec. period while thePower Supply Cooling Fan Motor Remote signalremains ON (for full-speed rotation) or OFF (for deceler-ated-speed rotation).
C0070Toner Replenish-ing Motor malfunc-tion
The Toner Bottle Home Position Sensor (PC7) outputs aHIGH signal for a continuous 3.5-sec. period while theToner Bottle is turning.
The Toner Bottle Home Position Sensor (PC7) outputs aLOW signal for a continuous 2-sec. period while theToner Bottle is turning.
C0210 Abnormal imagetransfer voltage
The image transfer voltage remains more than 100 Vcontinuously for a given period of time while the PCDrum remains stationary.
C03FF Faulty Model Set-ting Model Setting of Adjust available from the Service
mode is incorrectly set.
4980P550DA
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C0500 Warm-up failure
The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given periodof time during a warm-up cycle. From room temperature to 100C: 35 sec.
From 100C to 140C: 25 sec. From 140C to the completion ofthe warm-up cycle: 20 sec.
C0500
Warm-up failure(for the model hav-ing two FusingRoller HeaterLamps)
Di2011 Only
The Fusing Roller Thermistor does not detect a prede-termined temperature within 30 sec. after a warm-upcycle has been started and thus the warm-up cycle isnot completed.
The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given periodof time during a warm-up cycle.
From room temperature to 60C: 4 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.
C0501
Warm-up failure 2(for the model hav-ing two FusingRoller Heater
Lamps) Di2011 Only
The Fusing Roller Sub Thermistor does not detect apredetermined temperature within 30 sec. after a warm-up cycle has been started and thus the warm-up cycle isnot completed.
The surface temperature of the Fusing Roller does notreach a given level even after the lapse of a given period
of time during a warm-up cycle.
From room temperature to 60C: 7 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.
C0510Fusing failure(abnormally lowfusing temperature)
The temperature detected by the Fusing Roller Ther-mistor remains lower than 120C (105C for the modelhaving two Fusing Roller Heater Lamps) for a givenperiod of time during the standby state.
The temperature detected by the Fusing Roller Ther-mistor remains lower than 120C (105C for the modelhaving two Fusing Roller Heater Lamps) for a givenperiod of time during a print cycle.
C0511
Fusing failure(abnormally lowfusing temperature2)
Di2011 Only
The temperature detected by the Fusing Roller SubThermistor remains lower than 105C for a given periodof time during the standby state.
The temperature detected by the Fusing Roller SubThermistor remains lower than 105C for a given periodof time during a print cycle.
C0520Fusing failure(abnormally highfusing temperature)
The temperature detected by the Fusing Roller Ther-mistor remains higher than 240C for a given period oftime.
Malfunc-tion
CodeMalfunction Name Detection Timing
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C0521
Fusing failure(abnormally highfusing temperature2)
Di2011 Only
The temperature detected by the Fusing Roller SubThermistor remains higher than 240C for a given periodof time.
C0650Faulty ScannerHome PositionSensor
The Scanner Home Position Sensor (PC10) does not gofrom HIGH to LOW when the Scanner Motor (M5) isenergized for a given number of steps after thesequence to bring the Scanner back to its home positionhas been started at the end of a scan motion and duringre-shading.
The Scanner Home Position Sensor (PC10) does not gofrom LOW to HIGH when the Scanner Motor (M5) is
energized for a given number of steps after a scanmotion has been started at the end of a Scanner HomePosition Sensor home check scan motion and during re-shading.
C0B60
Bin SwitchingMotor malfunction(Only when theoptional JS-204 ismounted)
Refer to the option service manual (JS-204) for details.
C0B80
Shift Motor mal-
function(Only when theoptional OT-103 ismounted)
Refer to the option service manual (OT-103) for details.
C0F32 Faulty ATDC Sen-sor
The measurement taken by the ATDC Sensor (UN1) ata time 2.0 sec. after the Main Motor (M1) has startedturning is less than 5% (greater than 4.63 V).
The measurement taken by the ATDC Sensor (UN1) ata time 2.0 sec. after the Main Motor (M1) has startedturning is 19% or more (1.41 V or less).
C0F33Improperlyadjusted ATDCSensor
The adjustment of the ATDC control voltage is not com-pleted within 1 sec. after sampling has started of theATDC Sensor (UN1) as part of an operation of ATDCSensor Automatic Adjustment.
The ATDC Sensor control voltage falls outside the rangeof 5.39 V to 8.15 V during an operation of ATDC SensorAutomatic Adjustment.
Malfunc-tion
CodeMalfunction Name Detection Timing
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C1038 Engine connectionfailure
Master Board (PWB-A) to Control Board (PWB-C/C) con-nection failure There is no acknowledge signal transmitted from the
Master Board (PWB-A) to Control Board (PWB-C/C) for1.5 sec. or more.
An error command signal is transmitted from the ControlBoard (PWB-C/C) to Master Board (PWB-A).
An error status signal is transmitted from the MasterBoard (PWB-A) to Control Board (PWB-C/C).
C1200 Faulty ASIC/mem-ory
ASIC/memory (for image and control) fault A write or read error occurs with SRAM on the Control
Board (PWB-C/C).
C1300 Polygon Motor mal-function
Startup failure A LOW Polygon Motor (M2) Lock signal is not detected
within a given period of time that begins 1 sec. after thePolygon Motor has started turning.
Lock signal fault: Unstable after the first Lock signal hasbeen detected For a period of 1 sec. after the first LOW Polygon Motor
(M2) Lock signal (first Lock) has been detected, the nextLOW Polygon Motor Lock signal is not detected.
Lock signal fault: Lock signal out-of-timing A LOW Polygon Motor (M2) Lock signal is not detected
for a continuous given period of time while the rotation
of the Polygon Motor remains stabilized.Faulty Lock signal A LOW Polygon Motor (M2) Lock signal is detected for a
given period of time or more when the Polygon Motorremains deenergized.
C133B Communicationwith option error
It is not possible to communicate with the Printer Boardwithin a predetermined period of time during a printcycle.
C133D ROM check error An error is detected of the flash ROM chip on the FaxBoard when the Power Switch is turned ON.
C13F0 Faulty HSYNC
Laser scanning system malfunction The SOS Sensor does not detect a rising edge of SOS
within a given period of time after the Polygon Motor(M2) has started turning and a laser output has beenstarted.
The SOS Sensor detects no rising edges of SOS whileVIA (image area control) is ON.
C1468 Faulty EEPROMEEPROM fault Data cannot be written in EEPROM. Data stored in EEPROM is wrong.
C14A3 IR fluorescent lampfaultThe Exposure Lamp (LA2) of the Scanner fails to turn ON. The intensity of the Exposure Lamp is a predetermined
value or less during shading and re-shading.
Malfunc-tion
CodeMalfunction Name Detection Timing
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3.2 Resetting Procedure by Malfunction Code
Code Description ProcedureC0000 Main Motor malfunction Turn OFF and ON the Power Switch.C0044 ADF Cooling Fan FailureC0045 Fusing Cooling Fan Motor malfunction
C004E Power Supply Cooling Fan Motor mal-functionC0070 Toner Replenishing Motor malfunctionC0210 Abnormal image transfer voltage
C03FF Faulty Model Setting
Make the correct setting for ModelSetting of Adjust available from theService mode.
2-39C0500 Warm-up failure Turn ON the Power Switch with the
Stop key held down.C0501 Warm-up failure 2
C0510 Fusing failure (abnormally low fusingtemperature)
C0511 Fusing failure (abnormally low fusingtemperature 2)
C0520 Fusing failure (abnormally high fusingtemperature)
C0521 Fusing failure (abnormally high fusingtemperature 2)C0650 Faulty Scanner Home Position Sensor Turn OFF and ON the Power Switch.C0B60 Bin Switching Motor malfunctionC0B80 Shift Motor malfunctionC0F32 Faulty ATDC SensorC0F33 Improperly adjusted ATDC SensorC1038 Engine connection failureC1200 Faulty ASIC/memoryC1300 Polygon Motor malfunctionC133B Communication with option errorC133D ROM check errorC13F0 Faulty HSYNCC1468 Faulty EEPROMC14A3 IR fluorescent lamp fault
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3.3 Malfunction Detection Timing and Troubleshooting Proce-
dure(1) C0000 Main Motor malfunction
TroubleCode Description
C0000 The Main Motor (M1) Lock signal remains HIGH for a continuous 1-sec. period at any time 1 sec. after the Main Motor has started turning.
Relevant Electrical ComponentsMain Motor (M1) Master Board (PWB-A)
Power Supply Unit (PU1)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check M1 connectors for proper con-nection and correct as necessary.
2 Check M1 for correct drive couplingand correct as necessary.
3 M1 operation check. 3-3 I-144 Change PWB-A. 5 Change PU1.
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(2) C0044 ADF Cooling Fan Failure
(When the optional Duplexing Document Feeder AFR-19 is mounted)
TroubleCode Description
C0044 The ADF Fan Motor Lock signal remains set to H for a set period oftime while the EDH Fan Motor is turning.
Relevant Electrical ComponentsCooling Fan Motor (M3-ADF) Main Control Board (PBA-CONT)
Step Operations Ref.
Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check the motor connectors forpaper connection, and correct asnecessary.
2 Check the fan for possible overload,and correct as necessary.
3 M3-ADF operation check. 3-3 PBA-CONTCN9CONT-2 (REM)
E-5 (AFR-19)
4 Replace PBA-CONT.
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(3) C0045 Fusing Cooling Fan Motor Malfunction
TroubleCode Description
C0045 The Fusing Cooling Fan Motor (M3) Lock signal remains HIGH for a
continuous 1-sec. period while the Fusing Cooling Fan Motor is turn-ing at full speed or decelerated speed.
Relevant Electrical ComponentsFusing Cooling Fan Motor (M3) Master Board (PWB-A)
Power Supply Unit (PU1)
Step Operations Ref.Page
WIRING DIAGRAM
Control signal Location(ElectricalComponents)
1 Check M3 connectors for proper con-nection and correct as necessary.
2 Check the fan for possible overloadand correct as necessary.
3 M3 operation check 3-3 PWB-A PJ22A-1(REM)
C-2
4 Change PWB-A. 5 Change PU1.
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(4) C004E Power Supply Cooling Fan Motor Malfunction
TroubleCode Description
C004E
The Power Supply Cooling Fan Motor (M4) Lock signal remains HIGHfor a continuous 1-sec. period while the Power Supply Cooling FanMotor Remote signal remains ON (for full-speed rotation) or OFF (fordecelerated-speed rotation).
Relevant Electrical ComponentsPower Unit Cooling Fan Motor (M4) Master Board (PWB-A)
Power Supply Unit (PU1)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check M4 connectors for proper con-nection and correct as necessary.
2 Check the fan for possible overloadand correct as necessary.
3 M4 operation check 3-3 PU1 CN7PU1-1(REM)
F-12
4 Change PWB-A. 5 Change PU1.
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(5) C0070 Toner Replenishing Motor Malfunction
TroubleCode Description
C0070
The Toner Bottle Home Position Sensor (PC7) outputs a HIGH signalfor a continuous 3.5-sec. period while the Toner Bottle is turning.
The Toner Bottle Home Position Sensor (PC7) outputs a LOW signalfor a continuous 2-sec. period while the Toner Bottle is turning.
Relevant Electrical ComponentsToner Replenishing Motor (M6)Toner Bottle Home Position Sensor (PC7)
Master Board (PWB-A)Power Supply Unit (PU1)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check M6 connectors for proper con-nection and correct as necessary.
2 Check M6 for correct drive couplingand correct as necessary.
3 M6 operation check 3-3 PWB-A PJ16A-1(REM)
B-8
4 PC7 sensor check 3-1 PWB-A PJ16A-5(ON)
B-8
5 Change PWB-A. 6 Change PU1.
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(6) C0210 Abnormal Image Transfer Voltage
TroubleCode Description
C0210 The image transfer voltage remains more than 100 V for a continuousgiven period of time while the PC Drum remains stationary.
Relevant Electrical ComponentsImage Transfer RollerHigh Voltage Unit (HV1)
Master Board (PWB-A)
Step Operations Ref.
Page
WIRING DIAGRAM
Control signal
Location
(ElectricalComponents)1 Check the Image Transfer Roller for
installation.
2 Change HV1. 3 Change PWB-A.
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(7) C0500 Warm-up Failure
C0501 Warm-up Failure 2 (Di2011 Only)
C0510 Fusing Failure (Abnormally Low Fusing Temperature)
C0511 Fusing Failure (Abnormally Low Fusing Temperature 2) (Di2011 Only)
C0520 Fusing Failure (Abnormally High Fusing Temperature)
C0521 Fusing Failure (Abnormally High Fusing Temperature 2) (Di2011 Only)
TroubleCode Description
C0500
The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 100C: 35 sec. From 100C to 140C: 25 sec. From 140C to the completion of the warm-up cycle: 20 sec.
C0500
The Fusing Roller Thermistor does not detect a predetermined tempera-ture within 30 sec. after a warm-up cycle has been started and thus thewarm-up cycle is not completed.
The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 60C: 4 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.
C0501
The Fusing Roller Sub Thermistor does not detect a predetermined tem-perature within 30 sec. after a warm-up cycle has been started and thusthe warm-up cycle is not completed.
The surface temperature of the Fusing Roller does not reach a given leveleven after the lapse of a given period of time during a warm-up cycle. From room temperature to 60C: 7 sec. From 60C to 100C: 2 sec. From 100C to 130C: 1 sec. From 130C to 155C: 0.5 sec.
C0510
The surface temperature of the Fusing Roller remains lower than 120C(105C for the model having two Fusing Roller Heater Lamps) for a givenperiod of time during the standby state.
The surface temperature of the Fusing Roller remains lower than 120C(105C for the model having two Fusing Roller Heater Lamps) for a givenperiod of time during a print cycle.
C0511
The temperature detected by the Fusing Roller Sub Thermistor remainslower than 105C for a given period of time during the standby state.
The temperature detected by the Fusing Roller Sub Thermistor remainslower than 105C for a given period of time during a print cycle.
C0520 The temperature detected by the Fusing Roller Thermistor remains higherthan 240C for a given period of time.
C0521 The temperature detected by the Fusing Roller Sub Thermistor remainshigher than 240C for a given period of time.
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Relevant Electrical Components
Fusing Roller Heater Lamp (H1)Fusing Roller Sub Heater Lamp (H2)Fusing Roller ThermistorFusing Roller Sub Thermistor (TH2)
Fusing Roller Thermostat (TS1)Fusing Unit Interlock Switch (S2)Power Supply Unit (PU1)Master Board (PWB-A)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check that the Fusing Roller HeaterLamp (H1) turns ON when the PowerSwitch is turned ON and correct orreplace the lamp as necessary.
2 Check that the Fusing Roller SubHeater Lamp (H2) turns ON when thePower Switch is turned ON and corrector replace the lamp as necessary.
3 Check the Fusing Roller Thermostat(TS1) for operation.Check the resistance of TS1. TS1 isopen-circuited if its resistance is infinity.
F-2
4 Check the Fusing Unit Interlock Switch
(S2) for operation.Check continuity across the followingterminals when S2 is ON. Across S2-1A and S2-1B Across S2-2A and S2-2B
E-16
5 Check the Fusing Roller Thermistor(TH1) and Fusing Roller Sub Thermistor(TH2) for installation and correct orclean as necessary.
6 Check the Fusing Roller Thermistor(TH1) for operation.Disconnect CN15 (4P) and check theresistance across CN15-2 and 3 on theThermistor side. TH1 is open-circuited ifthe resistance is infinity.
D-2
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7 Check the Fusing Roller Sub Thermistor(TH2) for operation.
Disconnect CN22 (4P) and check theresistance across CN22-2 and 3 on theThermistor side. TH2 is open-circuited ifthe resistance is infinity.
D-2
8 Check the Fusing Roller Heater Lamp(H1) for continuity and correct or replaceas necessary.
9 Check the Fusing Roller Sub HeaterLamp (H2) for continuity and correct or
replace as necessary.
10 Change PU1. 11 Change PWB-A.
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
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(8) C0650 Faulty Scanner Home Position Sensor
TroubleCode Description
C0650
The Scanner Home Position Sensor (PC10) does not go from HIGHto LOW when the Scanner Motor (M5) is energized for a given num-ber of steps after the sequence to bring the Scanner back to its homeposition has been started at the end of a scan motion and during re-shading.
The Scanner Home Position Sensor (PC10) does not go from LOW toHIGH when the Scanner Motor (M5) is energized for a given numberof steps after a scan motion has been started at the end of a ScannerHome Position Sensor home check scan motion and during re-shad-ing.
Relevant Electrical ComponentsScanner Motor (M5)Scanner Home Position Sensor (PC10)
Control Board (PWB-C/C)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check M5 connectors for proper con-nection and correct as necessary.
2 Check M5 for correct drive couplingand correct as necessary.
3 M5 operation check 3-3 B-114 Scanner operation check 5 PC10 sensor check 3-1 PWB-C/C
P114C/C-3 (ON)B-13
6 Change PWB-C/C.
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(9) C0F32 Faulty ATDC Sensor
C0F33 Improperly Adjusted ATDC Sensor
TroubleCode Description
C0F32
The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec.after the Main Motor (M1) has started turning is less than 5% (greaterthan 4.63 V).
The measurement taken by the ATDC Sensor (UN1) at a time 2.0 sec.after the Main Motor (M1) has started turning is 19% or more (1.41 Vor less).
C0F33
The adjustment of the ATDC control voltage is not completed within 1sec. after sampling has started of the ATDC Sensor (UN1) as part ofan operation of ATDC Sensor Automatic Adjustment.
The ATDC Sensor control voltage falls outside the range of 5.39 V to8.15 V during an operation of ATDC Sensor Automatic Adjustment.
Relevant Electrical ComponentsATDC Sensor (UN1) Master Board (PWB-A)
Power Supply Unit (PU1)
Step Operations Ref.
Page
WIRING DIAGRAM
Control signal
Location
(ElectricalComponents)1 Check to see if developer is avail-
able.
2 Check the ATDC Sensor connectorsfor proper connection and correct asnecessary.
3 Change UN1. 4 Run ATDC Auto Adjust. 2-46
5 Change PWB-A. 6 Change PU1.
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(10) C1038 Engine Connection Failure
Trouble Code Description
C1038
Master Board (PWB-A) to Control Board (PWB-C/C) connection failure There is no acknowledge signal transmitted from the Master Board
(PWB-A) to Control Board (PWB-C/C) for 1.5 sec. or more. An error command signal is transmitted from the Control Board (PWB-
C/C) to Master Board (PWB-A). An error status signal is transmitted from the Master Board (PWB-A)
to Control Board (PWB-C/C).
Relevant Electrical ComponentsMaster Board (PWB-A) Control Board (PWB-C/C)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Turn OFF and ON the Power Switch. 2 Check the PWB-A connectors for
proper connection and correct asnecessary.
3 Check the PWB-C/C connectors forproper connection and correct asnecessary.
4 Check for proper connectionbetween PWB-A and PWB-C/C andcorrect as necessary.
5 Change PWB-A. 6 Change PWB-C/C.
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(11) C1200 Faulty ASIC/Memory
TroubleCode Description
C1200 ASIC/memory (for image and control) fault A write or read error occurs with SRAM on the Control Board (PWB-C/C).
Relevant Electrical ComponentsControl Board (PWB-C/C)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(Electrical
Components)1 Turn OFF and ON the Power Switch. 2 Check memory on PWB-C/C for con-
nection and correct as necessary.
3 Change PWB-C/C.
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(12) C1300 Polygon Motor Malfunction
C13F0 Faulty HSYNC
TroubleCode Description
C1300
Startup failure A LOW Polygon Motor (M2) Lock signal is not detected within a givenperiod of time that begins 1 sec. after the Polygon Motor has startedturning.
Lock signal fault: Unstable after the first Lock signal has been detected For a period of 1 sec. after the first LOW Polygon Motor (M2) Lock
signal (first Lock) has been detected, the next LOW Polygon MotorLock signal is not detected.
Lock signal fault: Lock signal out-of-timing A LOW Polygon Motor (M2) Lock signal is not detected for a continu-
ous given period of time while the rotation of the Polygon Motorremains stabilized.Faulty Lock signal A LOW Polygon Motor (M2) Lock signal is detected for a given period
of time or more when the Polygon Motor remains deenergized.
C13F0
Laser scanning system malfunction The SOS Sensor does not detect a rising edge of SOS within a given
period of time after the Polygon Motor (M2) has started turning and alaser output has been started.
The SOS Sensor detects no rising edges of SOS while VIA (image
area control) is ON.
Relevant Electrical ComponentsPH Unit Master Board (PWB-A)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Turn OFF and ON the Power Switch. 2 Check for proper connection
between the PH Unit and MasterBoard and correct as necessary.
3 Change the PH Unit. 4 Change PWB-A.
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(13) C133B Communication with Option Error
C133D ROM Check Error
For detailed corrective action, see the Service Manual for Fax.
(14) C1468 Faulty EEPROM
TroubleCode Description
C133B It is not possible to communicate with the Printer Board within a pre-determined period of time during a print cycle.
C133D An error is detected of the flash ROM chip on the Fax Board when thePower Switch is turned ON.
TroubleCode Description
C1468EEPROM fault Data cannot be written in EEPROM. Data stored in EEPROM is wrong.
Relevant Electrical Components
Master Board (PWB-A) EEPROM (U16)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Turn OFF the Power Switch andunplug the power cord. Then, plug inthe power cord and turn ON thePower Switch again.
2 Check EEPROM (U16) on PWB-C/Cfor proper connection and correct asnecessary.
3 Change PWB-A. 4 Change EEPROM. 1-57
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(15) C14A3 IR Fluorescent Lamp Fault
TroubleCode Description
C14A3The Exposure Lamp (LA2) of the Scanner fails to turn ON. The intensity of the Exposure Lamp is a predetermined value or less
during shading and re-shading.
Relevant Electrical ComponentsExposure Lamp (LA2)Inverter Board (PU2)
CCD Board (PWB-J)Control Board (PWB-C/C)
Step Operations Ref.Page
WIRING DIAGRAM
Control signal Location(ElectricalComponents)
1 Check that the Exposure Lamp (LA2)turns ON when the Power Switch isturned ON and correct or replace asnecessary.
2 Check connectors on PU2 for properconnection and correct as necessary.
3 Check connectors on PWB-J forproper connection and correct asnecessary.
4 Change PWB-C/C.
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3.4 Miscellaneous Errors3.4.1 Flash ROM Error
The copier determines that there is an error if writing to the flash ROM fails duringupgrading of the firmware.
When the Power Switch is turned ON, the Error indicator lights up steadily and a corre-sponding message appears on the Display.
If this error message appears, no operations can then be performed. It is not possible toupgrade the firmware from a PC connected through USB connection, either.
Relevant Electrical Components
Master Board (PWB-A) Control Panel (UN4)Control Board (PWB-C/C) EEPROM (U16)
Step Operations Ref.Page
WIRING DIAGRAM
Control signalLocation
(ElectricalComponents)
1 Check the connection status of con-nectors on each board (PWB-A,PWB-C/C, UN4): If there is anyabnormality, correct it.
2 Identify the specific firmware that isresponsible for the error.
3 Perform upgrading of the firmwarethrough BIOS.
1-64
4 Unplug EEPROM (U16) from PWB-C/C and then plug it back in.
5 Change PWB-C/C.
4035T506CA 4035T507CA 4035T508CA 4035T509CA
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3.5 Power Source-Related Malfunctions(1) The copier does not turn ON.
Step Check Result Action1 A malfunction code appears when the
Power Switch is turned ON.YES Go to step 2.NO Go to step 3.
2 The malfunction is temporarily resetwhen the Power Switch is turned OFFand ON with the Stop key held down.
YES Perform the troubleshoot-ing procedure accordingto the malfunction code.
3 Power supply voltage checkCheck voltage across pins of DC PowerSupply (PU1) when the Power Switch isturned ON. Voltage across CN1PU1-1 and
CN1PU1-2 AC0 V when the Power Switch is OFF Rated AC voltage when the PowerSwitch is turned ON
NO Check wall outlet for volt-age.
Check power cord forcontinuity.
Check Power Switch.
4 Check of output of DC24 V to ControlBoard (copier: PWB-C)Check voltage across a Control Board(copier: PWB-C) pin and GND when thePower Switch is turned ON. Voltage across P110C/C-1 and GND Voltage across P110C/C-2 and GND
DC0 V when the Power Switch is OFF DC24 V when the Power Switch isturned ON
NO Check Front Door Inter-lock Switch (S3).
Check Right Door Inter-lock Switch (S4).
Change DC power Sup-ply (PU1).
5 Check of output of DC24 V to MasterBoard (copier: PWB-A)Check voltage across a Master Board(copier: PWB-A) pin and GND when thePower Switch is turned ON. Voltage across PJ2A-2 and GND DC0 V when the Power Switch is OFF
DC24 V when the Power Switch isturned ON
NO Check Front Door Inter-lock Switch (S3).
Check Right Door Inter-lock Switch (S4).
Change DC power Sup-ply (PU1).
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6 Check of output of DC 5 V to MasterBoard (copier: PWB-A)Check voltage across a Master Board(copier: PWB-A) pin and GND when thePower Switch is turned ON. Voltage across PJ6A-9 and GND
DC0 V when the Power Switch is OFF DC24 V when the Power Switch isturned ON
NO Change DC power Sup-ply (PU1).
7 Check of output of DC5 V to controlpanel (UN2)Check voltage across a Control Board(copier: PWB-C) pin and GND when thePower Switch is turned ON. Voltage across P102C/C-1 and GND
DC0 V when the Power Switch is OFF DC5 V when the Power Switch isturned ON
NO Check Control Board(copier: PWB-C).
Change Master Board(copier: PWB-A).
Change DC power Sup-ply (PU1).
YES Change Control Panel(UN4).
Step Check Result Action
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4. IMAGE FAILURE4.1 Image Failure Troubleshooting
In this chapter, troubleshooting is divided into initial checks and troubleshooting proce-dures classified by image failures.
If any image failure has occurred, first make the initial checks, then proceed to the corre-sponding image failure troubleshooting procedure.
4.2 Initial Checks
Determine if the failure is attributable to a basic cause or causes.Section Step Check Result Action
Installationsite
1 The installation site com-plies with the requirements
specified in PRECAUTIONSFOR INSTALLATION con-tained in GENERAL.
NO Change the installationsite.
Paper 2 Paper meets product specifi-cations.
NO Change paper for one thatmeets specifications.
Instruct user to use paperthat meets specificationsand is recommended.
3 Paper is damp. YES Change paper for one thatis dry.
Then, instruct user to usepaper that meets specifi-cations and in how tostore paper.
Original 4 Original is placed correctly. NO Reposition original. Instruct user in how to
place original correctly.5 Original is written in light
pencil.YES Change original.
Instruct user to use origi-nal with appropriate imagedensity.
6 Original is transparent (OHPtransparencies, etc.).
YES Change original. Instruct user to use origi-
nals that meet specifica-tions.
7 Original Glass is dirty. YES Clean Original Glass.8 Original Glass is scratchy. YES Change Original Glass.
PM parts 9 The PM parts relating toimage formation have
reached the end of cleaning/ replacement cycles.
YES Clean PM parts. Change PM parts.
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4.3 Identification of the Faulty System Determine if the failure is attributable to an input system (IR) or output system (engine).
Check Result Action
Copy made at a reducedratio Input system
(IR)
Output system(printer)
1177T03YA
1177T04YA
Full-size Reduced
1177T05YA
Full-size Reduced
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4.4 Troubleshooting Procedures by Image Failure4.4.1 Image Reading Section: Blank copy
Step Check Result Action1 CCD Board (PWB-J) connector is loose. YES Reconnect.2 Control Board (PWB-C) connector is loose. YES Reconnect.
NO Change ControlBoard (PWB-C/C).
Change MasterBoard (PWB-A).
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4.4.2 Image Reading Section: black copy
Step Check Result Action1 Exposure Lamp turns ON when the Power Switch
is turned ON.NO Go to step 3.
2 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Power Switch is turned ON. NO Go to step 4.
3 Inverter Board (PU2) connector is loose. YES Reconnect.NO Change Exposure
Lamp.4 CCD Board (PWB-J) connector is loose. YES Reconnect.5 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change InverterBoard (PU2).
Change CCD Unit. Change ControlBoard (PWB-C/C).
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4.4.4 Image Reading Section: Foggy background or rough image
Step Check Result Action1 Original Glass is dirty. YES Clean.2 Scanner mirrors are dirty. YES Clean.
3 Exposure Lamp (LA2) is dirty. YES Clean.4 CCD Unit lens and CCD surface are dirty.
Remove lens cover to check for possible contami-nation.
YES Clean.
5 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Start key is pressed.
NO Go to step 7.
6 Inverter Board (copier: PU2) connector is loose. YES Reconnect.NO Change Exposure
Lamp (LA2).7 CCD Board (copier: PWB-J) connector is loose. YES Reconnect.
NO Change InverterBoard (PU2).
Change ControlBoard (copier: PWB-C).
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4.4.5 Image Reading Section: Black streaks or bands
Step Check Result Action1 Original Glass is dirty, scratchy, worn, or damaged. YES Clean or change.2 Shading sheet reading portion (the portion on the
backside of the Original Glass to which OriginalWidth Scale is affixed) is dirty.
YES Clean.
3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 Exposure Lamp (LA2) is dirty. YES Clean or change.5 CCD Unit lens and CCD surface are dirty or
scratchy.Remove lens cover to check for possible contami-nation.
YES Clean or change.
6 CCD Board (PWB-J) connector is loose. YES Reconnect.7 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change CCD Unit. Change Control
Board (PWB-C/C).
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4.4.6 Image Reading Section: Black spots
Step Check Result Action1 Original Glass is dirty or scratchy. YES Clean.2 CCD Board (PWB-J) connector is loose. YES Reconnect.
3 Control Board (PWB-C/C) connector is loose. YES Reconnect.NO Change CCD Unit.
Change ControlBoard (PWB-C/C).
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4.4.7 Image Reading Section: Blank streaks or bands
Step Check Result Action1 Original Glass is dirty, scratchy, worn, or damaged. YES Clean or change.2 Shading sheet reading portion (the portion on the
backside of the Original Glass to which OriginalWidth Scale is affixed) is dirty.
YES Clean.
3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 CCD Unit lens and CCD surface are dirty or
scratchy.Remove lens cover to check for possible contami-nation.
YES Clean or change.
5 CCD Board (PWB-J) connector is loose. YES Reconnect.6 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change CCD Unit. Change Control
Board (PWB-C/C).
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4.4.8 Image Reading Section: Uneven image density
Step Check Result Action1 Original Glass is dirty, scratchy, worn, or damaged. YES Clean or change.2 Shading sheet reading portion (the portion on the
backside of the Original Glass to which OriginalWidth Scale is affixed) is dirty.
YES Clean.
3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 Exposure Lamp (LA2) is dirty. YES Clean or change.5 CCD Unit lens and CCD surface are dirty or
scratchy.Remove lens cover to check for possible contami-nation.
YES Clean or change.
6 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Power Switch is turned ON.
NO Go to step 8.
7 Inverter Board (PU2) connector CN1PU2 is loose. YES Reconnect.NO Change Exposure
Lamp (LA2).8 CCD Board (PWB-J) connector is loose. YES Reconnect.9 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change CCD Unit. Change Control
Board (PWB-C/C).
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4.4.9 Image Reading Section: Gradation reproduction failure
Step Check Result Action1 Original Glass is dirty, scratchy, worn, or damaged. YES Clean or change.2 Shading sheet reading portion (the portion on the
backside of the Original Glass to which OriginalWidth Scale is affixed) is dirty.
YES Clean.
3 Scanner mirrors are dirty, scratchy, or damaged. YES Clean or change.4 Exposure Lamp (LA2) is dirty. YES Clean or change.5 CCD Unit lens and CCD surface are dirty or
scratchy.Remove lens cover to check for possible contami-nation.
YES Clean or change.
6 Exposure Lamp is abnormally lit (flickers or abnor-mally dark) when the Start key is pressed.
NO Go to step 8.
7 Inverter Board (PU2) connector CN2PU2 is loose. YES Reconnect.NO Change Exposure
Lamp (LA2).8 CCD Board (PWB-J) connector is loose. YES Reconnect.9 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change CCD Unit. Change Control
Board (copier: PWB-C/C).
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4.4.10 Image Reading Section: Periodically uneven image
Step Check Result Action1 Scanner Motor (M5) is securely fastened using the
dedicated fixing screws.NO Secure in position.
2 Scanner Motor (M5) drive mechanism is dirty ordamaged. YES Clean or change.
4 Scanner drive mechanism pulley is dirty with for-eign matter, scratchy, deformed, worn, or dam-aged.
YES Remove foreignmatter or change.
5 Scanner Drive Cables are wound incorrectly. YES Re-wind ScannerDrive Cables.
6 Scanner rails and bushings are dirty with foreignmatter, scratchy, deformed, worn, or damaged.
YES Clean or change.
7 Scanner moves smoothly.Gently move the Scanner by hand to check forsmooth operation.
NO Lubricate the Scan-ner rails.
Reinstall Scanner.
8 CCD Board (PWB-J) connector is loose. YES Reconnect.9 Control Board (PWB-C/C) connector is loose. YES Reconnect.
NO Change CCD Unit. Change Control
Board (PWB-C/C).
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4.4.11 Image Reading Section: Moire
Step Check Result Action1 Moire distortions recur even after the orientation of
original has been changed.NO Change the original
mode (select oneother than thatresulted in moire).
2 Moire distortions recur even after the original modehas been changed.
NO Change the originalimage mode.
3 Moire distortions recur even when the zoom ratio ischanged.
NO Change the zoomratio setting.
4 The problem has been eliminated through thechecks of step up 3.
NO Adjust CCD MainZoom and CCD SubZoom.
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4.4.12 Printer Section: Blank copy
Step Check Result Action1 Imaging Unit is installed correctly. NO Reinstall.2 Connector between the Imaging Unit and copier is
dirty.
YES Clean.
3 PH Shutter (located along the laser path betweenthe PH Unit and PC Drum) is not in correct positionor malfunctions.
YES Correct or reinstall.
4 Connectors PJ12A and PJ13A in PH unit come offor lift.
YES Reconnect.
5 Image Transfer Roller Assy is installed correctly. NO Reinstall.6 Image transfer current contact is dirty, broken, or
bent.YES Clean, correct, or
change.
7 Developing bias contact is dirty, broken, or bent. YES Clean, correct, orchange.8 High Voltage Unit (HV1) connectors is loose. YES Reconnect.9 The following voltage is supplied from the Master
Board (PWB-A).Check that there is 24 V developing across theMaster Board pin and GND when the Power Switchis turned ON (during a copy cycle or a standbystate).
YES Change IU. Change PH Unit. Change High Volt-
age Unit (HV1).NO Change Master
Board (PWB-A).
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4.4.13 Printer Section: Black copy
Step Check Result Action1 PC Drum Charge Corona grid mesh and Comb
Electrode are loose.YES Reinstall.
2 PC Drum Charge Corona contact is dirty, scratchy,folded, bent, or damaged. YES Correct or change.
3 Grid bias contact is dirty, folded, or bent. YES Clean, correct, orchange.
4 PC Drum ground contact is dirty, scratchy, bent, ordamaged.
YES Clean, correct, orchange.
5 High Voltage Unit (HV1) connectors is loose. YES Reconnect.6 The PH Unit cable is loose. YES Reconnect.7 The following voltage is supplied from the Master
Board (PWB-A).Check that there is 24 V developing across theMaster Board pin and GND when the Power Switchis turned ON (during a copy cycle or a standbystate).
YES Change IU.
Change PH Unit. Change High Volt-age Unit (HV1).
NO Change MasterBoard (copier: PWB-A).
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4.4.14 Printer Section: Low image density
Step Check Result Action1 The image changes when Toner Replenisher is
executed. Toner Replenisher of Utility
YES Replenish the sup-ply of toner usingToner Replenisher.
2 The image changes when ID Adjust and VGAdjust are executed.
YES Readjust. Fordetails, seeADJUSTING/SET-TING.
3 Image transfer current contact is dirty, folded, orbent.
YES Clean, correct, orchange.
4 Developing bias contact is dirty, folded, or bent. YES Clean, correct, orchange.
5 High Voltage Unit (HV1) connectors is loose. YES Reconnect.6 ATDC Sensor (UN1) is dirty with foreign matter
(such as paper dust) other than developer.YES Clean.
7 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin and GNDwhen the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND
NO Change ATDC Sen-sor (UN1) and thenchange developer.
8 The following voltage is supplied from the MasterBoard (PWB-A). Check that there is 24 V developing across the
Master Board pin and GND when the PowerSwitch is turned ON (during a copy cycle or astandby state).
YES Change IU. Change High Volt-age Unit (HV1).
NO Change MasterBoard (copier: PWB-A).
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4.4.15 Printer Section: Foggy background or rough image
Step Check Result Action1 The image changes when ID Adjust and VG
Adjust are executed.YES Readjust. For details,
see ADJUSTING/ SETTING.
2 PC Drum surface and the areas in contact withDs Collars are dirty with foreign matter, ordeformed or worn.
YES Clean or change.
3 Main Erase (LA1) is dirty. YES Clean.4 Grid bias contact is dirty, scratchy, deformed,
worn, or damaged.YES Clean, correct, or
change.5 ATDC Sensor (UN1) is dirty with foreign matter
(such as paper dust) other than developer.YES Clean.
6 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin andGND when the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND
NO Change ATDC Sensor(UN1) and thenchange developer.
7 The following voltage is supplied from the MasterBoard (PWB-A).
Check that there is 24 V developing across theMaster Board pin and GND when the PowerSwitch is turned ON (during a copy cycle or astandby state).
YES Adjust Db. For details,see ADJUSTING/ SETTING.
Change Eraser Lamp(LA1).
Change PC Drum. Change Imaging Unit. Change High Voltage
Unit (HV1).NO Change Master Board
(copier: PWB-A).
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4.4.16 Printer Section: Black streaks or bands
Step Check Result Action1 PC Drum is dirty or scratchy. YES Clean or change.2 Foreign matter (such as paper dust) sticks to the
Cleaning Blade of IU or the blade curves upward.
YES Remove foreign
matter, correct, orchange.3 DB of IU is plugged with foreign matter (such as
paper dust).YES Remove foreign
matter.4 PC Drum Charge Corona grid mesh and Comb
Electrode are dirty, scratchy, deformed, damaged,or out of position.
YES Clean or change.
5 Fusing Roller is dirty or scratchy. YES Clean or change.6 PH window of the PH Unit is dirty or scratchy. YES Clean or change.
NO Change IU.
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4.4.17 Printer Section: Black spots
Step Check Result Action1 Toner is present along the paper path. YES Clean.2 PC Drum is dirty or scratchy. YES Clean or change.
3 Tip of the PC Drum Paper Separator Finger is dirty,scratchy, deformed, worn, or damaged.
YES Clean or change.
4 Fusing Roller is dirty or scratchy. YES Clean or change.5 Tip of the Fusing Paper Separator Finger is dirty,
scratchy, deformed, worn, or damaged.YES Clean or change
Fusing Paper Sepa-rator Fingers andfinger springs.
6 The image changes when VG Adjust is executed. YES Readjust. Fordetails, seeADJUSTING/SET-TING.
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4.4.18 Printer Section: Blank streaks or bands
Step Check Result Action1 PC Drum ground terminal is dirty, scratchy,
deformed, or damaged.YES Clean, correct, or
change.
2 DB of IU is plugged with foreign matter (such aspaper dust). YES Remove foreignmatter.3 PC Drum Charge Corona grid mesh and Comb
Electrode are dirty, scratchy, deformed, or dam-aged.
YES Clean, correct, orchange.
4 Post-fusing guide plate is dirty, scratchy, deformed,worn, or damaged.
YES Clean or change.
5 PH window of the PH Unit is dirty, scratchy, or dam-aged.
YES Clean or change.NO Change IU.
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4.4.19 Printer Section: Void areas
Step Check Result Action1 Foreign matter is present along the paper path. YES Remove foreign
matter.
2 Paper dust plugs up the Paper Dust Remover. YES Clean or change.3 PC Drum Charge Corona, grid mesh, and Comb
Electrode are loose.YES Reinstall.
4 PC Drum Charge Corona contact is dirty, scratchy,deformed, worn, or damaged.
YES Clean, correct, orchange.
5 Developing Roller is dirty, scratchy, deformed,worn, or damaged.
YES Clean or change.
6 Toner is even on Sleeve/Magnet Roller. NO Adjust Db. Fordetails, seeADJUSTING/SET-TING.
7 Developer is not even in the Developer MixingChamber of IU.
YES Even out developerin the DeveloperMixing Chamber.
8 DB of IU is plugged with foreign matter (such aspaper dust).
YES Remove foreignmatter.
9 Image Transfer Roller is dirty, scratchy, deformed,worn, or damaged.
YES Clean, correct, orchange.
10 Image Transfer Roller Assy is installed correctly. NO Reinstall.11 Charge Neutralizing Plate is dirty, scratchy, folded,
or bent.YES Clean, correct, or
change.12 Fusing Roller is dirty, scratchy, deformed, or worn. YES Clean or change.
NO Change IU.
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4.4.20 Printer Section: Smear on back
Step Check Result Action1 Toner is spilled over area inside copier. YES Clean interior.2 Toner is present along the paper path. YES Clean.
3 Fusing Pressure Roller is dirty, scratchy, or dam-aged.
YES Clean or change.
4 Image Transfer Roller is dirty. YES Clean or change.5 Grid bias contact is dirty, scratchy, deformed, worn,
or damaged.YES Clean, correct, or
change.NO Change High Volt-
age Unit (HV1). Change Master
Board (PWB-A).
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4.4.21 Printer Section: Uneven image density
Step Check Result Action1 PC Drum ground plate is dirty, scratchy, deformed,
worn, or damaged.YES Clean, correct, or
change.
2 PC Drum Charge Corona grid mesh and CombElectrode are dirty, scratchy, deformed, worn, dam-aged, or loose.
YES Clean, correct, orchange.
3 Image Transfer Roller is dirty, scratchy, deformed,worn, or damaged.
YES Clean or change.
4 Sleeve/Magnet Roller is dirty, scratchy, deformed,worn, or damaged.
YES Clean or change.
5 Toner is even on Sleeve/Magnet Roller. NO Adjust Db. Fordetails, seeADJUSTING/SET-TING.
6 Developer is not even in the Developer MixingChamber of IU.
YES Even out developerin the DeveloperMixing Chamber.
NO Change IU. Change Master
Board (PWB-A).
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4.4.22 Printer Section: Gradation reproduction failure
Step Check Result Action1 PC Drum is dirty. YES Clean.2 Image Transfer Roller is dirty, scratchy, deformed,
worn, or damaged.
YES Clean or change.
3 The PH Unit cable is loose. YES Reconnect.4 PH window of PH Unit is dirty. YES Clean.5 ATDC Sensor (UN1) is dirty with foreign matter
(such as paper dust) other than developer.YES Clean.
6 The following voltages develop from the ATDCSensor (UN1).Check voltage across a Master Board pin and GNDwhen the Power Switch is turned ON. DC5.39 V to 8.15 V across PJ10A-1 and GND DC1.41 V to 4.98 V across PJ10A-3 and GND
NO Change ATDC Sen-sor (UN1) anddeveloper.
YES Change Master
Board (copier: PWB-A).
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4.4.23 Printer Section: Periodically uneven image
Step Check Result Action1 IU is securely fastened using the dedicated fixing
screws.NO Secure in position.
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