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A229 SERVICE MANUAL
RICOH GROUP COMPANIES

PN: RCSMA229

SERVICE CALL CONDITIONS

6. TROUBLESHOOTING
6.1 SERVICE CALL CONDITIONS
6.1.1 SUMMARY
There are 4 levels of service call conditions.
Level A Definition To prevent the machine from being damaged, the SC can only be reset by a service representative (see the note below). The copier cannot be operated at all. The SC can be reset by turning the main power switch off and on if the SC was caused by incorrect sensor detection. Reset Procedure Enter SP mode, then turn the main power switch off and on. Turn the operation switch or main power switch off and on. A level B' SC can only be reset by turning the main power switch off and on. Turn the operation switch off and on. The SC will not be displayed. All that happens is that the SC history is updated.

B

C D

The copier can be operated as usual except for the unit related to the service call. The SC history is updated. The machine can be operated as usual.

NOTE: 1) If the problem concerns electrical circuit boards, first disconnect then reconnect the connectors before replacing the PCBs. 2) If the problem concerns a motor lock, first check the mechanical load before replacing motors or sensors. 3) When a Level A or B SC occurs while in an SP mode, the display does not indicate the SC number. If this occurs, check the SC number after leaving the SP mode. This does not apply to Level B' codes.
Troubleshooting

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SERVICE CALL CONDITIONS

6.1.2 SC CODE DESCRIPTIONS
SC101: Exposure lamp error - Definition - [B] The standard white level was not detected properly when scanning the white plate. - Possible cause ｷ Exposure lamp defective ｷ Lamp regulator defective ｷ Exposure lamp connector defective ｷ Dirty standard white plate ｷ Dirty scanner mirror or scanner mirror out of position ｷ SBU board defective ｷ SBU connector defective ｷ Lens block out of position SC120: Scanner home position error 1 -Definition- [B] The scanner home position sensor does not detect the on condition during initialization or copying. - Possible causes ｷ Scanner home position sensor defective ｷ Scanner motor defective ｷ Scanner motor drive board defective ｷ Scanner home position sensor connector defective ｷ Scanner drive motor connector defective SC121: Scanner home position error 2 -Definition- [B] The scanner home position sensor does not detect the off condition during initialization or copying. - Possible causes ｷ Scanner home position sensor defective ｷ Scanner drive motor defective ｷ Scanner motor drive board defective ｷ Scanner home position sensor connector defective ｷ Scanner drive motor connector defective

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SERVICE CALL CONDITIONS

SC302-01: Charge corona output error 1 -Definition- [B] The feedback voltage from the charge corona unit is too high. - Possible causes ｷ Charge P.P. defective ｷ Poor charge corona unit connection SC302-02: Charge corona output error 2 -Definition- [B] The control PWM for the charge corona unit is too high. - Possible causes ｷ Charge P.P. defective ｷ Poor charge corona unit connection SC302-03: Charge corona output error 3 -Definition- [B] The control PWM for the charge grid is too high. - Possible causes ｷ Charge P.P. defective ｷ Poor charge corona unit connection SC302-04: Charge corona output error 4 -Definition- [B] The feedback voltage from the charge grid is too high. - Possible causes ｷ Charge P.P. defective ｷ Poor charge corona unit connection SC303-01: Charge corona wire cleaner error 1 -Definition- [B] The charge corona wire cleaner does not return to its home position. - Possible causes ｷ Charge corona wire cleaner motor defective ｷ Charge P.P. defective ｷ IOB defective
Troubleshooting

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SERVICE CALL CONDITIONS

SC303-02: Charge corona wire cleaner error 2 -Definition- [B] The charge corona wire cleaner motor connector is not connected. - Possible causes ｷ The charge corona wire cleaner motor connector is not connected. SC320: Polygon motor error -Definition- [B] The polygon motor does not reach its operating speed within 20 seconds after the polygon motor on signal, or the lock signal is still activated for more than 20 seconds after the polygon motor off signal. - Possible causes ｷ Polygon motor defective ｷ Poor connection between the polygon motor driver and the SBICU board ｷ SBICU board defective SC321: No laser writing signal (F-GATE) error 1 - Definition- [B] The laser writing signal (F-GATE) does not go to LOW for more than 15 seconds after the copy paper reaches the registration sensor. - Possible causes ｷ SBICU board defective ｷ Poor connection of the printer controller ｷ Printer controller defective SC322: 1st laser synchronization error -Definition- [B'] The 1st laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated. - Possible causes ｷ Poor connection between the laser synchronization detector board and the LD unit ｷ Laser synchronization detector board out of position ｷ Laser synchronization detector board defective ｷ LD unit defective

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SERVICE CALL CONDITIONS

SC323: LD drive current over -Definition- [B'] The LD drive board applies more than 110 mA to the LD. - Possible causes ｷ LD unit defective (not enough power, due to aging) ｷ Poor connection between the LD unit and the SBICU board ｷ SBICU defective SC326: 2nd laser synchronization error -Definition- [B] The 2nd laser synchronization signal cannot be detected by the main scan synchronization detector board even if the laser diodes are activated. - Possible causes ｷ Poor connection between the laser synchronization detector board and the LD unit ｷ Laser synchronization detector board out of position ｷ Laser synchronization detector board defective ｷ LD unit defective SC327: LD unit home position error 1 -Definition- [B'] The LD unit home position sensor does not detect an on condition when the LD unit moves to its home position. - Possible causes ｷ LD unit home position sensor defective ｷ LD positioning motor defective ｷ LD unit movement blocked because of incorrect connector routing SC328: LD unit home position error 2 -Definition- [B'] The LD unit home position sensor does not detect an off condition when the LD unit moves from its home position. - Possible causes ｷ LD unit home position sensor defective ｷ LD positioning motor defective ｷ LD unit movement blocked because of incorrect connector routing

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Troubleshooting

SERVICE CALL CONDITIONS

SC329: Laser beam pitch adjustment error -Definition- [B] The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the dpi. - Possible causes ｷ The laser beam pitch adjustment (SP2-109-3 and 4) was not done after replacing the NVRAM or doing an NVRAM clear. ｷ The laser beam pitch adjustment (SP2-109-3 and 4) was not done after replacing the LD unit. ｷ LD unit movement blocked because of incorrect connector routing SC350-1: ID sensor error 1 -Definition- [D] One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsp 2.5V 2) Vsp = 0V - Possible causes ｷ ID sensor defective ｷ ID sensor connector defective ｷ Poor ID sensor connector connection ｷ I/O board (IOB) defective ｷ Charge or development power pack defective ｷ Dirty ID sensor ｷ Defect at ID sensor pattern writing area of the drum SC350-2: ID sensor error 2 -Definition- [D] One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsg< 2.5V 2) Vsg = 0V 3) The ID sensor output voltage is 5.0V and the PWM signal input to the ID sensor is 0 when checking the ID sensor pattern - Possible causes ｷ ID sensor defective ｷ ID sensor connector defective ｷ Poor ID sensor connector connection ｷ I/O board (IOB) defective ｷ Charge or development power pack defective ｷ Dirty ID sensor ｷ Defect at the ID sensor pattern writing area of the drum
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SERVICE CALL CONDITIONS

SC350-3: ID sensor error 3 -Definition- [D] For 2 s during the ID sensor pattern check, the ID sensor pattern edge voltage is not 2.5V. - Possible causes ｷ ID sensor defective ｷ ID sensor connector defective ｷ Poor ID sensor connector connection ｷ I/O board (IOB) defective ｷ Charge or development power pack defective ｷ Dirty ID sensor ｷ Defect at the ID sensor pattern writing area of the drum SC350-4: ID sensor error 4 -Definition- [D] One of the following ID sensor output voltages is detected at ID sensor initialization. 1) Vsg < 4.0V when the maximum PWM input (255) is applied to the ID sensor. 2) Vsg 4.0V when the minimum PWM input (0) is applied to the ID sensor. - Possible causes ｷ ID sensor defective ｷ ID sensor connector defective ｷ Poor ID sensor connector connection ｷ I/O board (IOB) defective ｷ Charge or development power pack defective ｷ Dirty ID sensor ｷ Defect at the ID sensor pattern writing area of the drum SC350-5: ID sensor error 5 -Definition- [D] Vsg falls out of the adjustment target (4.0 ｱ 0.2V) during Vsg checking. - Possible causes ｷ ID sensor defective ｷ ID sensor connector defective ｷ Poor ID sensor connector connection ｷ I/O board (IOB) defective ｷ Charge or development power pack defective ｷ Dirty ID sensor ｷ Defect at the ID sensor pattern writing area of the drum

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Troubleshooting

SERVICE CALL CONDITIONS SC360: Hard disk drive error 1 -Definition- [B] The machine does not detect the connection signal from the HDD. - Possible causes ｷ Poor connection between the HDD and SBICU ｷ The dc power connector to the HDD is disconnected ｷ HDD defective ｷ SBICU defective

Rev. 2/99

SC361: Hard disk drive error 2 ｷ When this SC occurs only once, this problem will be solved after turning the main power switch off and on. ｷ When this SC occurs while performing SP4-911-1 (HDD media check), it can be cured by doing SP4-911-2 (HDD formatting). ｷ HDD defective SC362: IMAC (image compression IC) error -Definition- [B] An error occurs during image processing in the IMAC, which handles image compression and image data transmission. - Possible causes ｷ SBICU defective SC363: Data Transmission Error - Definition A data transmission error occurred at the ASIC which controls data transmission and compression during connecting mode. - Possible cause ｷ Defective connection board ｷ Defective or disconnected interface cable ｷ Defective SBICU SC364: Data Transmission Time-out Error - Definition Data transmission to the memory does not finish properly within 20 seconds after the start of data transmission. - Possible cause ｷ Defective connection board ｷ Defective or disconnected interface cable ｷ Defective SBICU SC365: Image storage address error -Definition- [B] The SBICU receives an image data output request signal for data that is not stored in memory. - Possible causes ｷ SBICU defective

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Rev. 2/99

SERVICE CALL CONDITIONS

SC366: CRC Error - Definition Electrical noise causes sent data and received data to differ. A CRC check can detect this error. - Possible cause ｷ Defective connection board ｷ Defective or disconnected interface cable SC370-01: Potential sensor error 1 Definition- [D] When calibrating the drum potential sensor at the process control initial setting, the drum potential sensor output voltage is out of specification. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ Development power pack defective SC370-02: Potential sensor error 2 Definition- [D] When calibrating the drum potential sensor at the process control initial setting, the rate of change of drum potential sensor output with voltage on the drum is out of specification. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ Development power pack defective SC370-03: Potential sensor error 3 Definition- [D] When adjusting VG for the unexposed drum during process control initial setting, ｭ 1000V is applied to the charge grid, the drum potential sensor should detect a VD of about -900 V, but detects that VD is more than -970 V. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ Development power pack defective ｷ Dirty or worn charge corona wire

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Troubleshooting

SERVICE CALL CONDITIONS

SC370-04: Potential sensor error 4 Definition- [D] When adjusting the drum potential (VD) at the process control initial setting, the drum potential sensor detects that VD is more than VG (grid voltage). - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ Development power pack defective ｷ Dirty or worn charge corona wire SC370-05: Potential sensor error 5 Definition- [D] When adjusting the drum potential (VH) for LD power adjustment during the process control initial setting, the first time the VH pattern is made, the drum potential sensor detects that VH is more than 500V. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ LD unit defective SC370-06: Potential sensor error 6 Definition- [D] When adjusting VG for the unexposed drum during process control initial setting, ｭ1000V is applied to the charge grid, the drum potential sensor should detect a VD of about -900 V. However, the drum potential sensor detects that VD does not become ｭ 900 + 10 V after 5 attempts. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ Development power pack defective

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Rev. 12/15/98

SERVICE CALL CONDITIONS

SC370-07: Potential sensor error 7 Definition- [D] When adjusting the drum potential (VH) for half tone at the process control initial setting, the drum potential sensor detects that VH does not become ｭ300 + 20 V even though the LD power has been changed twenty times five times. - Possible causes ｷ Potential sensor defective ｷ Poor connection between the potential sensor and the I/O board (IOB) ｷ IOB defective ｷ Poor connection between the drum unit and the I/O board (IOB) ｷ LD unit defective ｷ Poor drum cleaning SC390-1: TD sensor error 1 -Definition- [B] The TD sensor output voltage is less than 0.5V or more than 4.0V 10 times consecutively during copying. - Possible causes ｷ TD sensor defective ｷ Poor connection between the TD sensor and the I/O board (IOB) ｷ I/O board (IOB) defective SC390-2: TD sensor error 2 -Definition- [B] One of the following TD sensor output voltages is detected during TD sensor initial setting. 1) Less than 2.5V when the maximum PWM (255) is applied to the TD sensor. 2) 2.5V or more when minimum PWM (0) is applied to the TD sensor. - Possible causes ｷ TD sensor defective ｷ Poor connection between the TD sensor and the I/O board (IOB) ｷ I/O board (IOB) defective

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Troubleshooting

SERVICE CALL CONDITIONS

SC390-3: TD sensor error 3 -Definition- [B] The TD sensor output voltage is not adjusted to 2.5 + 0.1V within 20 s during TD sensor initial setting. - Possible causes ｷ TD sensor defective ｷ Poor connection between the TD sensor and the I/O board (IOB) ｷ I/O board (IOB) defective SC391: Development bias leak -Definition- [B] A development bias leak signal is detected. - Possible causes ｷ Poor connection between the development bias terminal and the development P.P. ｷ Development P.P. defective SC401-1: Transfer roller leak error -Definition- [B] A transfer roller current leak signal is detected. - Possible causes ｷ Transfer P.P. defective ｷ Poor connection between the transfer current terminal and the transfer P.P. SC401-2: Transfer roller open error -Definition- [B] The transfer roller current feedback signal is not detected. - Possible causes ｷ Transfer P.P. defective ｷ Poor connection between the transfer current terminal and the transfer P.P. SC430: Quenching lamp error -Definition- [D] When finishing the process control initial setting, the drum potential which is detected by the drum potential sensor is out of the normal range. - Possible causes ｷ Quenching lamp defective ｷ Poor connection between quenching lamp and charge power pack
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SERVICE CALL CONDITIONS

SC440: Drum motor lock -Definition- [B] The drum motor lock signal is longer than 2 seconds while the drum motor is on. - Possible causes ｷ Too much load on the drive mechanism ｷ Drum motor defective ｷ Poor drum motor connector connection ｷ Interface board defective SC441: Development motor lock -Definition- [B] The development motor lock signal is longer than 2 seconds while the development motor is on. - Possible causes ｷ Too much load on the drive mechanism ｷ Development motor defective ｷ Poor drum motor connector connection ｷ Interface board defective SC491: Polygonal mirror cooling fan motor lock -Definition- [B] The polygonal mirror cooling fan motor lock signal is longer than 5 seconds while the polygonal mirror cooling fan motor is on. - Possible causes ｷ Too much load on the drive mechanism ｷ Polygonal mirror cooling fan motor defective ｷ Poor drum motor connector connection SC495: Toner recycling unit error -Definition- [B] The toner recycling sensor output signal does not change within 500 ms when the drum motor turns on. - Possible causes ｷ Too much load on the drive mechanism ｷ Toner recycling clutch defective ｷ Toner recycling clutch connector connection ｷ Toner recycling sensor connector connection

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Troubleshooting

SERVICE CALL CONDITIONS

SC496: Toner collection bottle error -Definition- [B] The toner collection bottle set switch remains off. - Possible causes ｷ No toner collection bottle ｷ Toner collection bottle switch defective SC497: Toner recycling motor error -Definition- [B] The toner recycling motor connector set signal remains off. - Possible causes ｷ The toner recycling motor connector is disconnected. SC501: 1st tray lift malfunction -Definition- [C] One of following conditions is detected in the 1st tray. 1) The 1st lift sensor is not activated after the tray lift motor has been on for 10 seconds. 2) The 1st lift sensor is already activated when the 1st tray is placed in the machine. - Possible causes ｷ 1st lift sensor defective ｷ 1st tray lift motor defective ｷ Poor 1st tray lift motor connection SC502: 2nd tray lift malfunction -Definition- [C] One of following conditions is detected in the 2nd tray. 1) The 2nd lift sensor is not activated after the tray lift motor has been on for 10 seconds. 2) The 2nd lift sensor is already activated when the 2nd tray is placed in the machine. - Possible causes ｷ 2nd lift sensor defective ｷ 2nd tray lift motor defective ｷ Poor 2nd tray lift motor connection

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SERVICE CALL CONDITIONS

SC503: 3rd tray lift malfunction -Definition- [C] One of following conditions is detected in the 3rd tray. 1) The 3rd lift sensor is not activated after the tray lift motor has been on for 10 seconds. 2) The 3rd lift sensor is already activated when the 3rd tray is placed in the machine. - Possible causes ｷ 3rd lift sensor defective ｷ 3rd tray lift motor defective ｷ Poor 3rd tray lift motor connection SC506: Paper feed motor lock -Definition- [C] A paper feed motor lock signal is detected for more than 50 ms during rotation. - Possible causes ｷ Paper feed motor defective ｷ Too much load on the drive mechanism ｷ Poor paper feed motor connector connection SC507: LCT motor lock (optional LCT) -Definition- [C] A main motor lock signal is detected for more than 50 ms during rotation. - Possible causes ｷ LCT motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection

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Troubleshooting

SERVICE CALL CONDITIONS

SC508: Tandem rear fence motor error -Definition- [C] One of following conditions is detected in the tandem tray. 1) When the tray is placed in the machine, the rear fence return sensor and the rear fence HP sensor are already on. 2) It takes 10 seconds or more for the rear fence return sensor to detect the on condition after the rear fence motor starts. 3) It takes 10 seconds or more for the rear fence HP sensor to detect the on condition after this fence starts moving to the home position. - Possible causes ｷ Rear fence motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection SC509: Tandem side fence motor error 1 -Definition- [C] One of following conditions is detected in the tandem tray. 1) When the side fence motor turns on to open the side fence, the side fence positioning sensor does not detect an on condition for 2 seconds or more. 2) When the side fence motor turns on to close the side fence, the side fence close sensor does not detect an on condition for 2 seconds or more. - Possible causes ｷ Side fence motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection

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SERVICE CALL CONDITIONS

SC510: LCT tray malfunction (optional LCT) -Definition- [C] 1) The LCT lift sensor does not activate for more than 18 seconds after the LCT motor starts to lift the bottom plate. 2) The LCT down sensor does not activate for more than 18 seconds after the LCT motor starts to lower the bottom plate. 3) The LCT lift sensor is already activated when the LCT cover is closed after paper is loaded. 4) During paper lifting, the LCT lift sensor does not activate for more than 2.5 seconds after the paper end sensor turned on. - Possible causes ｷ LCT lift motor defective ｷ Pick-up solenoid defective ｷ Poor motor connector connection ｷ Poor pick-up solenoid connector connection ｷ Paper end sensor defective ｷ LCT lift sensor defective ｷ LCT lower limit sensor defective SC511: Tandem side fence motor error 2 -Definition- [C] When the side fence motor turns on to close the side fence, the side fence close sensor does not detect an on condition for 2 seconds or more. - Possible causes ｷ Side fence motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection SC521-1: Duplex jogger motor error 1 -Definition- [C] When the jogger fence moves to the home position, the jogger HP sensor does not turn on even if the jogger fence motor has moved the jogger fence 153.5 mm. - Possible causes ｷ Jogger fence motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection
Troubleshooting

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SERVICE CALL CONDITIONS

SC521-2: Duplex jogger motor error 2 -Definition- [C] When the jogger fence moves from the home position, the jogger fence HP sensor does not turn off even if the jogger motor has moved the jogger fence 153.5 mm. - Possible causes ｷ Jogger fence motor defective ｷ Too much load on the drive mechanism ｷ Poor motor connector connection SC530: By-pass feed motor lock -Definition- [C] A by-pass feed motor lock signal is detected for more than 20s during rotation. - Possible causes ｷ By-pass feed motor defective ｷ Too much load on the drive mechanism ｷ Poor by-pass feed motor connector connection ｷ IOB defective SC531: Fusing/duplex motor lock -Definition- [C] A fusing/duplex motor lock signal is detected for more than 2s during rotation. - Possible causes ｷ Fusing/duplex motor defective ｷ Too much load on the drive mechanism ｷ Poor fusing/duplex motor connector connection ｷ IOB defective SC541: Fusing thermistor open -Definition- [A] The fusing temperature detected by the thermistor was below 7ｰC for 16 seconds. - Possible causes ｷ Fusing thermistor defective or out of position ｷ Poor thermistor terminal connection

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SERVICE CALL CONDITIONS

SC542: Fusing temperature warming-up error -Definition- [A] The fusing temperature does not reach the fusing standby temperature within 5 minutes after the main power switch is turned on. - Possible causes ｷ Fusing thermistor defective or out of position ｷ Fusing lamp open ｷ Fusing thermofuse open ｷ SBICU defective ｷ Power supply board defective ｷ Poor fusing unit connection SC543: Fusing overheat error 1 -Definition- [A] A fusing temperature of over 231ｰC is detected for 5 seconds by the fusing thermistor. - Possible causes ｷ Fusing thermistor defective ｷ SBICU defective ｷ I/O board (IOB) defective SC545: Fusing overheat error 2 -Definition- [A] The fusing lamp stays on at full power for 45 seconds while in the stand-by condition after warming-up is completed.
Troubleshooting

- Possible causes ｷ Fusing thermistor out of position SC546: Fusing ready temperature malfunction -Definition- [A] The fusing temperature goes 20 ｰC below or 20 ｰC over the stand-by temperature after warm-up is completed. - Possible causes ｷ Poor thermistor connector connection ｷ Poor fusing unit connection

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SERVICE CALL CONDITIONS

SC547: Zero cross signal malfunction -Definition- [A] Zero cross signals are not detected within a certain period after the main power switch has been turned on. - Possible causes ｷ Power supply board defective ｷ Noise on the ac power line SC590: Toner collection motor error -Definition- [B] The toner collection motor sensor output does not change for 3 seconds while the toner collection motor is on. - Possible causes ｷ Toner collection motor defective ｷ Too much load on the drive mechanism ｷ Poor toner collection motor connector connection ｷ IOB defective ｷ Toner collection motor sensor defective SC601: Communication error between SBICU and SBU -Definition- [B'] The SBICU cannot communicate with the SBU board properly. - Possible causes ｷ Poor connection between the SBICU and SBU ｷ SBU defective ｷ SBICU defective SC602: Communication error between SBICU and HDD controller -Definition- [B] The SBICU cannot communicate with the HDD controller properly. - Possible causes ｷ Poor connection between the SBICU board and HDD control board ｷ SBICU board defective

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SERVICE CALL CONDITIONS

SC620-1: Communication error between SBICU and ADF 1 -Definition- [B] The TXD and RXD signals between SBICU and ADF main board do not stabilize. - Possible causes ｷ Poor connection between the SBICU board and ADF main board ｷ Noise on interface cable SC620-2: Communication error between SBICU and ADF 2 -Definition- [B] The TXD and RXD signals between SBICU and ADF main board do not stabilize. - Possible causes ｷ Poor connection between the SBICU board and ADF main board ｷ ADF main board defective ｷ SBICU board defective SC620-3: Communication error between SBICU and ADF 3 -Definition- [B] Software error after abnormal user operation. - Possible causes ｷ Software error SC621: Communication error between SBICU and finisher -Definition- [B] The SBICU cannot communicate with the finisher properly. - Possible causes ｷ Poor connection between the SBICU board and the finisher main board ｷ Finisher main board defective ｷ SBICU board defective ｷ Noise on interface cable
Troubleshooting

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SERVICE CALL CONDITIONS

SC623: Communication error between SBICU and paper feed board -Definition- [B] The SBICU cannot communicate with the paper feed board properly. - Possible causes ｷ Poor connection between the SBICU board and the paper feed board ｷ Paper feed board defective ｷ SBICU board defective ｷ Noise on interface cable SC624: Communication error between SBICU and LCT -Definition- [B] The SBICU cannot communicate with the LCT properly. - Possible causes ｷ Poor connection between the SBICU board and the LCT interface board ｷ LCT interface board defective ｷ SBICU board defective ｷ Noise on interface cable SC630: CSS (RSS) communication error between line adapter and CSS center Japan only SC700: ADF original pick-up malfunction -Definition- [B] The pick-up roller H.P sensor signal does not change after the pick-up motor has turned on. - Possible causes ｷ Pick-up roller H.P sensor defective ｷ Pick-up motor defective ｷ Timing belt out of position ｷ ADF main board defective

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SERVICE CALL CONDITIONS

SC701: ADF original table lift-up malfunction -Definition- [B'] The bottom plate position sensor does not activate when the original table motor lifts the original table. - Possible causes ｷ Bottom plate H.P sensor defective ｷ Bottom plate motor defective ｷ ADF main board defective ｷ Bottom plate position sensor defective SC722: Finisher jogger motor error -Definition- [B] 1) The finisher jogger H.P sensor remains de-activated for more than a certain time when returning to home position. 2) The finisher jogger H.P sensor remains activated for more than a certain time when moving away from home position. - Possible causes ｷ Jogger H.P sensor defective ｷ Jogger motor defective SC724: Finisher staple hammer motor error -Definition- [B] Stapling does not finish within a certain time after the staple hammer motor turned on. - Possible causes ｷ Staple hammer motor defective ｷ Staple jam SC725: Finisher stack feed-out motor error - Definition - [B] The stack feed-out belt H.P sensor does not activate within a certain time after the stack feed-out motor turned on. - Possible causes ｷ Stack feed-out H.P sensor defective ｷ Stack feed-out motor defective

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Troubleshooting

SERVICE CALL CONDITIONS

SC726: Finisher shift/lift motor error - Definition - [B] 1) Tray shift does not finish within a certain time after the shift motor turned on. 2) The stack height sensor does not activate within a certain time after the shift tray lift motor turned on. - Possible causes ｷ Shift motor defective ｷ Shift tray lift motor defective SC727: Finisher stapler rotation motor error - Definition - [B] 1) Stapler rotation does not finish within a certain time after the stapler rotation motor turned on. 2) The stapler does not return to its home position within a certain time after stapling finished. - Possible causes ｷ Stapler rotation motor defective ｷ Poor stapler rotation motor connection SC729: Finisher punch motor error - Definition - [B] The punch H.P sensor does not activate within a certain time after the punch motor turned on. - Possible causes ｷ Punch motor defective ｷ Punch H.P sensor defective ｷ Poor punch motor connection SC730: Finisher stapler position motor error - Definition - [B] 1) The stapler H.P. sensor stays on for longer than normal when the stapler motor turns on to return the stapler to its home position. 2) The stapler H.P sensor does not turn on within a certain time after the stapler motor turned on to move the stapler away from home position. - Possible causes ｷ Stapler motor defective ｷ Stapler H.P sensor defective ｷ Poor stapler motor connection

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SERVICE CALL CONDITIONS

SC900: Electrical total counter error -Definition- [A] The total counter contains something that is not a number. - Possible causes ｷ NVRAM defective SC951: F-gate signal error 2 -Definition- [B'] When the IPU has already received the F-gate signal (laser writing start trigger signal), the IPU receives another F-gate signal. - Possible causes ｷ SBICU defective SC953: Scanner image setting error -Definition- [B'] The settings that are required for image processing using the scanner are not sent from the IPU. - Possible causes ｷ 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.
Troubleshooting

- Possible causes ｷ Software defective SC955: Memory setting error -Definition- [B'] The settings that are required for image processing using the memory are not sent from the IPU. - Possible causes ｷ Software defective

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A229

SERVICE CALL CONDITIONS

SC959: Printer setting ID error -Definition- [B'] The ID that is required for image processing using the printer is not sent from the IPU. - Possible causes ｷ Software defective SC960: Printer return ID error -Definition- [B'] The ID that is sent from the printer controller after finishing the printout is incorrect. - Possible causes ｷ Software defective SC961: Printer ready ID error -Definition- [B'] The ID that is sent from the printer controller in the printer controller printing ready condition is incorrect. - Possible causes ｷ Software defective SC962: Memory setting ID error -Definition- [B'] The ID that is sent from the memory when the IPU sent the memory ready signal is incorrect. - Possible causes ｷ Software defective SC963: Memory finishing ID error -Definition- [B'] The ID that is sent from the memory when the IPU sent the memory finish signal is incorrect. - Possible causes ｷ Software defective

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SERVICE CALL CONDITIONS

SC964: Printer ready error -Definition- [B'] The print ready signal is not generated for more than 17 seconds after the IPU received the print start signal. - Possible causes ｷ Software defective SC980: HDD access error -Definition- [B] Incorrect parameter sent to the HDD controller. - Possible causes ｷ Software defective ｷ SBICU defective SC981: HDD response error -Definition- [B'] The HDD controller does not generate any response when the IPU sends a read/write signal to the HDD controller. - Possible causes ｷ Software defective ｷ HDD defective SC982: HDD construction error -Definition- [B'] A HDD that does not have the correct specifications has been installed. - Possible causes ｷ Hard disk defective ｷ Incorrect hard disk type

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A229

Troubleshooting

SERVICE CALL CONDITIONS

SC990: Software performance error -Definition- [B'] The software performs an unexpected function. - Possible causes ｷ Software defective NOTE: When this SC occurs, the file name, address, and data will be stored in the NVRAM. These data can be checked by entering SP mode then pressing "0". Note the above data and the situation in which this SC occurs. Then report the data and conditions to your technical control center

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ELECTRICAL COMPONENT DEFECTS

6.2 ELECTRICAL COMPONENT DEFECTS
6.2.1 SENSORS
Component (Symbol) Scanner Home Position (S1) Original Width (S2) CN CN312-7 (SBICU) CN3124.5.6 (SBICU) Condition Stays On Stays Off Stays On Symptom SC121 is displayed. SC120 is displayed. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. The CPU cannot detect the original size properly. APS and AR/E do not function correctly. SC328 is displayed when the laser beam pitch is changed. SC327 is displayed when the laser beam pitch is changed. The machine quits auto process control and enters fixed toner supply mode. SC390-01 is displayed. SC390-01 is displayed. SC350-03 is displayed after copying. SC350-01 is displayed after copying. "Toner End" is displayed even if there is enough toner in the toner hopper. "Toner End" is not displayed even if there is no toner in the toner hopper. SC495 is displayed. SC495 is displayed. SC495 is displayed. SC495 is displayed. A229
Troubleshooting

Stays Off

Original Length-1 (S3)

CN305-7 (SBICU)

Stays On

Stays Off

Original Length-2 (S4)

CN314-3 (SBICU)

Stays On

Stays Off

LD Unit Home Position (S5)

CN218-8 (IOB)

Stays On Stays Off

Drum Potential Sensor (S6) Toner Density (TD) (S7) Image Density (ID) (S8) Toner End (S9)

CN206A12 (IOB) CN211B6 (IOB) CN206B11 (IOB) CN211B2 (IOB) CN268-7 (PFB) CN207B2 (IOB)

Open Shorted Stays On Stays Off Open Shorted Open Shorted Stays On Stays Off Stays On Stays Off

Toner Collection Motor (S10) Recycle Toner (S11)

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ELECTRICAL COMPONENT DEFECTS Component (Symbol) 1st Paper Feed (S12) CN CN269A2 (PFB) CN269B2 (PFB) CN270-2 (PFB) Condition Stays On Stays Off Stays On Stays Off Stays On Stays Off 1st Lift (S15) CN269A8 (PFB) CN269B8 (PFB) CN270-8 (PFB) CN269A5 (PFB) CN269B5 (PFB) CN270-5 (PFB) Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off By-pass Paper End (S21) CN211A5 (IOB) CN262-2 (PFB) Stays On Stays Off Stays On Stays Off Symptom "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. SC501 is displayed. SC501 is displayed. SC502 is displayed. SC502 is displayed. SC503 is displayed. SC503 is displayed. "Paper End" is displayed even if there is paper in the 1st paper tray. "Paper End" is not displayed even if there is no paper in the 1st paper tray. "Paper End" is displayed even if there is paper in the 2nd tray. "Paper End" is not displayed even if there is no paper in the 2nd tray. "Paper End" is displayed even if there is paper in the 3rd tray. "Paper End" is not displayed even if there is no paper in the 3rd tray. "Paper End" is displayed even if there is paper in the by-pass tray. "Paper End" is not displayed even if there is no paper in the by-pass tray. "Paper Near End" is not displayed even if the tray is almost empty. "Paper Near End" is displayed even if there is enough paper in the paper tray. "Paper Near End" is not displayed even if the tray is almost empty. "Paper Near End" is displayed even if there is enough paper in the paper tray.

2nd Paper Feed (S13)

3rd Paper Feed (S14)

2nd Lift (S16)

3rd Lift (S17) 1st Paper End (S18)

2nd Paper End (S19)

3rd Paper End (S20)

1st Near End (S22)

2nd Near End (S23)

CN262-5 (PFB)

Stays On

Stays Off

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ELECTRICAL COMPONENT DEFECTS Component (Symbol) 3rd Near End (S24) CN CN263-2 (PFB) Condition Stays On Stays Off Rear Fence HP (S25) Rear Fence Return (S26) Side Fence Close (S27) Side Fence Position (S28) Base Plate Down (S29) CN264B6 (PFB) CN264B10 (PFB) CN264A7 (PFB) CN264A14 (PFB) CN264A11 (PFB) Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Symptom "Paper Near End" is not displayed even if the tray is almost empty. "Paper Near End" is displayed even if there is enough paper in the paper tray. SC508 is displayed SC508 is displayed SC508 is displayed SC508 is displayed SC511 is displayed SC509 is displayed SC511 is displayed SC509 is displayed The bottom plate is not lowered when paper in the tray shifts to the right tray. SC511 will be displayed. The bottom plate lift lever locks at the lowest position. The paper in the left tray is not moved to the right tray. The rear fence moves back and forth continuously. The bottom plate does not rise even if there is paper in the tray. The bottom plate rises and falls even if there is no paper. When the bottom plate lowers, it locks at the lowest position. (SC510) "Paper End" is displayed even if there is paper in the tray. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper.

Stays Off

Left Tandem Tray Paper End (S30)

CN264B12 (PFB)

Stays On Stays Off

3rd Tray Paper (S31)

CN27412 (PFB) CN274-5 (PFB)

Stays On Stays Off Stays On Stays Off

Tray Down (S32)

Duplex Entrance (S33)

CN208B14 (IOB) CN208B5 (IOB) CN208B11 (IOB)

Stays On Stays Off Stays On Stays Off Stays On Stays Off

Duplex Transport 1 (S34) Duplex Transport 2 (S35)

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A229

Troubleshooting

ELECTRICAL COMPONENT DEFECTS Component (Symbol) Duplex Transport 3 (S36) Duplex Jogger HP (S37) Relay (S38) CN CN208B11 (IOB) CN208B2 (IOB) CN211A8 (IOB) CN211A1 (IOB) CN209-6 (IOB) Condition Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off Stays On Stays Off Symptom

Rev. 12/15/98

"Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. SC521-02 is displayed. SC521-01 is displayed. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. A paper jam will occur when the guide plate is opened. "Guide Plate Close" is displayed after the front door is closed even if the guide plate is closed. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. "Paper Jam" is displayed whenever a copy is made. "Paper Jam" is displayed even if there is no paper. Paper jams may occur. "Paper Full on Exit Tray" is displayed.

Registration (S39)

Guide Plate Position (S40)

Fusing Exit (S41)

CN204B2 (IOB) CN204B5 (IOB) CN204B8 (IOB)

Stays On Stays Off Stays On Stays Off Stays On Stays Off

Paper Exit (S42)

Tray Paper Limit (S43)

NOTE: "Stays on" means that the actuator is in the sensor for a photointerrupter.

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Rev. 12/15/98

ELECTRICAL COMPONENT DEFECTS

6.2.2 SWITCHES
Component (Symbol) Main Power (SW1) Front Door Safety (SW3,5) Front Door Safety (SW4) CN CN1001,2,3,4 (PSU) CN1031,2 (LDDR) CN1521,2,3,4,5, 6 (I/F Board) CN2661,3 (PFB) CN26810 (PFB) Condition Open Shorted Open Shorted Open Symptom The machine does not turn on. The machine does not turn off. SC322 is displayed. "Close the Door" is displayed even if the front cover is closed. SC440, 441, or 531 is displayed. "Close the Door" is not displayed even if the front cover is opened. SC506 is displayed.

Shorted

Lower Front Door Safety (SW6) Toner Collection Bottle (SW7)

Open

Shorted Open Shorted

SC 496 is displayed. No caution is displayed on the operation panel even if the toner collection bottle is set incorrectly. "Full Used Toner Bottle" is displayed even if the toner collection bottle is not full. "Full Used Toner Bottle" is not displayed even if the toner collection bottle is full. The CPU cannot detect the proper paper size, and misfeeds may occur when a copy is made. The 3rd tray bottom plate stays at its lowest position. The 3rd tray bottom plate stays at its highest position. "Open the by-pass tray" is displayed even if the by-pass tray is open. Troubleshooting

Toner Overflow (SW8)

CN26812 (PFB) CN2627,8,9,10, 11,12 (PFB) CN274-2 (PFB)

Open Shorted Open

Paper Size (SW9)

3rd Tray Down (SW10)

Shorted Open Shorted Open Shorted

By-pass Tray (SW11)

CN211B8 (IOB)

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BLOWN FUSE CONDITIONS

Rev. 12/15/98

6.3 BLOWN FUSE CONDITIONS
Rating 115V 210 ~ 230V Power Supply Board FU101 12A/250V 6.3A/250V 120VAC FU102 6.3A/125V 6.3A/125V 24VDC FU103 6.3A/125V 6.3A/125V 24VDC FU104 6.3A/125V 6.3A/125V 24VDC FU105 6.3A/125V 6.3A/125V 24VDC FU106 6.3A/125V 6.3A/125V 24VDC FU107 6.3A/125V 6.3A/125V 24VDC Fuse Symptom when turning on the main power switch No response SC521-02 is displayed. SC391-01 and "Paper Jam" is displayed. When cleared, SC441 is displayed SC401-02 is displayed after the print key is pressed. Finisher does not work The ADF does not work and SC391 is displayed SC121 is displayed. If the 1st tray is selected, SC501 is displayed. If the 2nd tray is selected, SC502 is displayed. No display on the operation panel. "Please wait" remains in the display. No display on the operation panel and the scanner motor keeps returning the scanner to home position. No response SC401-01 is displayed after the Print key is pressed. The machine continuously reports a misfeed, shuts down and restarts. No display LCT motor and paper feed solenoid engage. SC401-02 is displayed after the Print key is pressed. SC401-02 is displayed after the Print key is pressed.

FU108 24VDC FU109 12VDC FU110 5VDC FU111 5VDC FU112 12VDC FU113 5VDC FU114 5VDC FU115 5VDC FU116 24VDC

4A/125V 2A/125V 5A/125V

4A/125V 2A/125V 5A/125V

5A/125V 2A/125V 5A/125V 5A/125V 5A/125V 6.3A/125V

5A/125V 2A/125V 5A/125V 5A/125V 5A/125V 6.3A/125V

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