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A283/A284 SUPPLEMENTAL SERVICE MANUAL
(To be used in conjunction with A230/A231/232 Service Manual) 000958MIU
RICOH GROUP COMPANIES

SERVICE CALL CONDITIONS

7. TROUBLESHOOTING
7.1 SERVICE CALL CONDITIONS
7.1.1 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.

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.

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 displayed. All that happens is that the SC history is updated.

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.

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Troubleshooting

SERVICE CALL CONDITIONS

7.1.2 SC CODE DESCRIPTIONS
SC101: Exposure Lamp Error
Definition [B] The standard white level was not detected properly when scanning the white plate. Possible Cause ˇ Exposure lamp defective ˇ Lamp stabilizer defective ˇ Exposure lamp connector defective ˇ Dirty standard white plate ˇ Dirty scanner mirror or scanner mirror out of position ˇ SBU board defective ˇ SBU connector defective ˇ Lens block out of position ˇ SIB defective

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 ˇ Scanner home position sensor defective ˇ Scanner drive motor defective ˇ SIB defective ˇ Scanner home position sensor connector defective ˇ 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 ˇ Scanner home position sensor defective ˇ Scanner drive motor defective ˇ SIB defective ˇ Scanner home position sensor connector defective ˇ Scanner drive motor connector defective

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SERVICE CALL CONDITIONS

SC302: Charge Roller Current Leak
Definition [B] A charge roller current leak signal is detected. Possible Causes ˇ Charge roller damaged ˇ High voltage supply board defective ˇ Poor PCU connection

SC 304: Charge Roller Current Correction Error
Definition [B] The charge roller bias correction is performed twice even if the maximum charge roller bias (-2000V) is applied to the roller. Possible Causes ˇ ID sensor defective

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 ˇ Polygon motor defective ˇ Poor connection between the polygon motor driver and the BICU board ˇ BICU 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 ˇ BICU board defective ˇ Poor connection of the fax controller or printer controller ˇ Fax controller or printer controller defective

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Troubleshooting

SERVICE CALL CONDITIONS

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 ˇ Poor connection between the laser synchronization detector board and the LD unit. ˇ Laser synchronization detector board out of position ˇ Laser synchronization detector board defective ˇ LD unit defective

SC323: LD Drive Current Over
Definition [B'] The LD drive board applies more than 110 mA to the LD. Possible Causes ˇ LD unit defective (not enough power, due to aging) ˇ Poor connection between the LD unit and the BICU board ˇ BICU 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 ˇ Poor connection between the laser synchronization detector board and the LD unit. ˇ Laser synchronization detector board out of position ˇ Laser synchronization detector board defective ˇ 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 ˇ LD unit home position sensor defective ˇ LD positioning motor defective ˇ LD unit movement blocked because of incorrect connector routing

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SERVICE CALL CONDITIONS

SC328: LD Unit Home Position Rrror 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 ˇ LD unit home position sensor defective ˇ LD positioning motor defective ˇ LD unit movement blocked because of incorrect connector routing

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 ˇ The laser beam pitch adjustment (SP2-109-3 and 4) was not done after replacing the NVRAM or doing an NVRAM clear. ˇ The laser beam pitch adjustment (SP2-109-1 ~ 4) was not done after replacing the LD unit. ˇ LD unit movement blocked because of incorrect connector routing

SC350-1: ID Sensor Error 1
Definition [B] One of the following ID sensor output voltages was detected twice consecutively when checking the ID sensor pattern. 1) Vsp 2.5V 2) Vsg 2.5V 3) Vsp = 0V 4) Vsg = 0V Possible Causes ˇ ID sensor defective ˇ ID sensor connector defective ˇ Poor ID sensor connector connection ˇ I/O board (IOB) defective ˇ High voltage supply board defective ˇ Dirty ID sensor ˇ Defect at ID sensor pattern writing area of the drum

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Troubleshooting

SERVICE CALL CONDITIONS

SC350-2: ID Sensor Error 2
Definition [B] 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 ˇ ID sensor defective ˇ ID sensor connector defective ˇ Poor ID sensor connector connection ˇ I/O board (IOB) defective ˇ High voltage supply board defective ˇ Dirty ID sensor ˇ Defect at the ID sensor pattern writing area of the drum

SC350-3: ID Sensor Error 3
Definition [B] The ID sensor pattern edge voltage is detected to be not 2.5V twice consecutively during an 800 ms interval. Possible Causes ˇ ID sensor defective ˇ ID sensor connector defective ˇ Poor ID sensor connector connection ˇ I/O board (IOB) defective ˇ High voltage supply board defective ˇ Dirty ID sensor ˇ Defect at the ID sensor pattern writing area of the drum

SC350-4: ID Sensor Error 4
Definition [B] 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 ˇ ID sensor defective ˇ ID sensor connector defective ˇ Poor ID sensor connector connection ˇ I/O board (IOB) defective ˇ High voltage supply board defective ˇ Dirty ID sensor ˇ Defect at the ID sensor pattern writing area of the drum

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SERVICE CALL CONDITIONS

SC350-5: ID Sensor Error 5
Definition [B] Vsg falls out of the adjustment target (4.0 ą 0.2V) during Vsg checking. Possible Causes ˇ ID sensor defective ˇ ID sensor connector defective ˇ Poor ID sensor connector connection ˇ I/O board (IOB) defective ˇ High voltage supply board defective ˇ Dirty ID sensor ˇ Defect at the ID sensor pattern writing area of the drum

SC360: Hard Disk Drive Error 1
Definition [B] The machine does not detect the connection signal from the HDD. Possible Causes ˇ Poor connection between the HDD and HDD controller board ˇ The ac power connector to the HDD is disconnected. ˇ HDD defective ˇ HDD controller board defective ˇ BICU defective

SC361: Hard Disk Drive Error 2
Definition [B] The image data stored in the HDD cannot be output properly. Possible Causes ˇ When this SC occurs only once, this problem will be solved after turning the main power switch off and on. ˇ When this SC occurs while performing SP4-911-1 (HDD media check), it can be cured by doing SP4-911-2 (HDD formatting). ˇ HDD defective

Definition [B] An error occurs during image processing in the IMAC, which handles image compression and image data transmission. Possible Causes ˇ BICU defective ˇ HDD controller board defective

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Troubleshooting

SC362: IMAC (Image Compression IC) Error

SERVICE CALL CONDITIONS

SC365: Image Storage Address Error
Definition [B] The BICU receives an image data output request signal for data that is not stored in memory. Possible Causes ˇ BICU defective

SC390-1: TD Sensor Error 1
Definition [B] The TD sensor output voltage is less than 0.5V or more than 5.0V 10 consecutively during copying. Possible Causes ˇ TD sensor abnormal ˇ Poor connection between the TD sensor and the I/O board (IOB) ˇ I/O board (IOB) defective

SC390-2: TD Sensor Error 2
Definition [B] The TD sensor output voltage is less than 1.8V or more than 4.8V during TD sensor initial setting. Possible Causes ˇ TD sensor abnormal ˇ No developer in the development unit

SC391: Development Bias Leak
Definition [B] A development bias leak signal is detected. Possible Causes ˇ Poor connection between the development bias terminal and the high voltage supply board ˇ High voltage supply board defective

SC401-1: Transfer Roller Leak Error
Definition [B] A transfer roller current leak signal is detected. Possible Causes ˇ High voltage supply board defective ˇ Poor connection between the transfer current terminal and the high voltage supply board

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SERVICE CALL CONDITIONS

SC401-2: Transfer Roller Open Error
Definition [B] The transfer roller current feedback signal is not detected. Possible Causes ˇ High voltage supply board defective ˇ Poor connection between the transfer current terminal and the high voltage supply board ˇ Poor PCU connection

SC403: Transfer Belt Position Sensor Error
Definition [B] The transfer belt position sensor does not activate even if the transfer belt clutch has rotated once. Possible Causes ˇ Main motor/drive malfunction ˇ Transfer belt position sensor defective ˇ Poor transfer belt position sensor connection

SC 405: Transfer Belt Error
Definition [B] The transfer belt does not move away from the drum during ID sensor pattern checking. Possible Causes ˇ Main motor/drive malfunction ˇ Transfer belt position sensor defective ˇ Poor transfer belt position sensor connection

SC440: Main Motor Lock
Definition [B] A main motor lock signal is not detected within 2 seconds after the main motor turns on.
Troubleshooting A283/A284

Possible Causes ˇ Too much load on the drive mechanism ˇ Main motor defective

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SERVICE CALL CONDITIONS

SC490: Exhaust Fan Motor Lock
Definition [B] An exhaust fan motor lock signal is not detected within 5 seconds after the exhaust fan motor turns on. Possible Causes ˇ Too much load on the drive mechanism ˇ Exhaust fan motor defective ˇ Poor fan motor connector connection

SC492: Cooling Fan Motor Lock
Definition [B] A cooling fan motor lock signal is not detected within 5 seconds after the cooling fan motor turns on. Possible Causes ˇ Too much load on the drive mechanism ˇ Cooling fan motor defective ˇ Poor fan motor connector connection

SC493: Bridge Unit Cooling Fan Lock
Definition [B] A bridge unit cooling fan motor lock signal is not detected within 5 seconds after the bridge unit cooling fan motor turns on. Possible Causes ˇ Too much load on the drive mechanism ˇ Bridge unit cooling fan motor defective ˇ Poor fan motor connector connection

SC501-1: 1st Tray Lift Malfunction 1
Definition [C] The paper upper limit sensor is not activated after the tray lift motor has been on for 10 seconds. Possible Causes ˇ 1st tray upper limit sensor defective ˇ Tray lift motor defective ˇ Poor tray lift motor connection

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SERVICE CALL CONDITIONS

SC501-2: 1st Tray Lift Malfunction 2
Definition [C] If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the paper upper limit sensor should de-activate within 5 seconds after the paper bottom plate starts to drop. If it does not deactivate within 5 s four times consecutively, this SC will be generated. Possible Causes ˇ 1st tray upper limit sensor defective ˇ Tray lift motor defective ˇ Too much paper in the tray

SC502-1: 2nd Tray Lift Malfunction 1
Definition [C] The paper upper limit sensor is not activated after the tray lift motor has been on for 10 seconds. Possible Causes ˇ 2nd tray upper limit sensor defective ˇ Tray lift motor defective ˇ Poor tray lift motor connection

SC502-2: 2nd Tray Lift Malfunction 2
Definition [C] If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the paper upper limit sensor should de-activate within 5 seconds after the paper bottom plate starts to drop. If it does not deactivate within 5 s four times consecutively, this SC will be generated. Possible Causes ˇ 2nd tray upper limit sensor defective ˇ Tray lift motor defective ˇ Too much paper in the tray
Troubleshooting

SC503-1: 3rd Tray Lift Malfunction 1 (Optional Paper Tray Unit)
Definition [C] The paper upper limit sensor is not activated after the tray lift motor has been on for 13 seconds. Possible Causes ˇ 3rd tray upper limit sensor defective ˇ Tray lift motor defective ˇ Poor tray lift motor connection

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SERVICE CALL CONDITIONS

SC503-2: 3rd Tray Lift Malfunction 2 (Optional Paper Tray Unit)
Definition [C] If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the paper upper limit sensor should de-activate within 5 seconds after the paper bottom plate starts to drop. If it does not deactivate within 5 s four times consecutively, this SC will be generated. Possible Causes ˇ 3rd tray upper limit sensor defective ˇ Tray lift motor defective ˇ Too much paper in the tray

SC504-1: 4th Tray Lift Malfunction 1 (Optional Paper Tray Unit)
Definition [C] The paper upper limit sensor is not activated after the tray lift motor has been on for 13 seconds. Possible Causes ˇ 4th tray upper limit sensor defective ˇ Tray lift motor defective ˇ Poor tray lift motor connection

SC504-2: 4th Tray Lift Malfunction 2 (Optional Paper Tray Unit)
Definition [C] If the main power switch is turned on when the paper is already at the feed height, the paper height position is detected again. At this time, the paper upper limit sensor should de-activate within 5 seconds after the paper bottom plate starts to drop. If it does not deactivate within 5 s four times consecutively, this SC will be generated. Possible Causes ˇ 4th tray upper limit sensor defective ˇ Tray lift motor defective ˇ Too much paper in the tray

SC506: Paper Tray Unit Main Motor Lock (Optional Paper Tray)
Definition [C] A main motor lock signal is detected for more than 0.5 s during rotation. Possible Causes ˇ Paper tray unit main motor defective ˇ Too much load on the drive mechanism ˇ Poor motor connector connection

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SERVICE CALL CONDITIONS

SC507: LCT Main Motor Lock (Optional LCT)
Definition [C] A main motor lock signal is detected for more than 0.5 s during rotation. Possible Causes ˇ LCT main motor defective ˇ Too much load on the drive mechanism ˇ Poor motor connector connection

SC510-1: LCT Tray Malfunction 1
Definition [C] 1) The LCT lift sensor does not activate for more than 18 seconds after the LCT lift motor turned on. 2) The LCT lower limit sensor does not activate for more than 18 seconds after the LCT lift motor turned on. 3) The LCT lift sensor is already activated when the LCT lift motor turns on. Possible Causes ˇ LCT lift motor defective ˇ Pick-up solenoid defective ˇ Poor motor connector connection ˇ Poor pick-up solenoid connector connection ˇ Paper end sensor defective ˇ LCT lift sensor defective ˇ LCT lower limit sensor defective

SC510-2: LCT Tray Malfunction-2
Definition [C] 1) During paper lifting, the LCT lift sensor does not activate for more than 1.5 seconds after the paper end sensor turned on. If this condition occurs four times consecutively, this SC will be generated. 2) During paper lifting, after the top of the paper reaches the upper limit position, the paper is lowered until the LCT lift sensor is de-activated. At this time, the LCT lift sensor does not de-activate for more than 5 seconds. Possible Causes ˇ LCT lift motor defective ˇ Pick-up solenoid defective ˇ Poor motor connector connection ˇ Poor pick-up solenoid connector connection ˇ Paper end sensor defective ˇ Too much paper in the LCT ˇ Paper is not properly loaded in the LCT
Troubleshooting A283/A284

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SERVICE CALL CONDITIONS

SC541: Fusing Thermistor Open
Definition [A] The fusing temperature detected by the thermistor was below 7°C for 16 seconds. Possible Causes ˇ Fusing thermistor defective or out of position ˇ Poor thermistor terminal connection

SC542: Fusing Temperature Warming-up Error
Definition [A] The fusing temperature does not reach the fusing standby temperature within 125 seconds after the main power switch is turned on. Possible Causes ˇ Fusing thermistor defective or out of position ˇ Fusing lamp open ˇ Fusing thermofuse open ˇ BICU defective ˇ Power supply board defective ˇ Poor fusing unit connection

SC543: Fusing Overheat Error 1
Definition [A] A fusing temperature of over 231°C is detected for 5 seconds by the fusing thermistor. Possible Causes ˇ Fusing thermistor defective ˇ BICU defective ˇ I/O board (IOB) defective

SC545: Fusing Overheat Error 2
Definition [A] The fusing lamp stays on at full power for 30 seconds while in the stand-by condition after warming-up is completed. Possible Causes ˇ Fusing thermistor out of position

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SERVICE CALL CONDITIONS

SC546-1: Fusing Ready Temperature Malfunction - 1
Definition [A] After warming-up is completed, the fusing temperature continuously fluctuates between 40°C over and 40°C below the stand-by temperature. Possible Causes ˇ Poor connection between the thermistor and the harness ˇ Poor fusing unit connection

SC546-2: Fusing Ready Temperature Malfunction - 2
Definition [A] After warming-up is completed, the fusing temperature fluctuates between 40°C over and 40°C below the stand-by temperature 5 or more times per minutes. Possible Causes ˇ Poor connection between the thermistor and the harness ˇ Poor fusing unit connection

SC547: Zero Cross Signal Malfunction
Definition [A] Zero cross signals are not detected within a certain period within 500 ms after the main power switch has been turned on. Possible Causes ˇ Power supply board defective ˇ Noise on the ac power line

SC548: Fusing Unit Installation Error
Definition [A] The machine cannot detect the fusing unit when the front cover and right cover are closed. Possible Causes ˇ Fusing unit is not installed ˇ Poor fusing unit connection
Troubleshooting SM 7-15 A283/A284

SERVICE CALL CONDITIONS

SC599: 1-Bin Tray Motor Lock (Optional 1-Bin Tray Unit)
Definition [C] A 1-bin tray motor lock signal is not detected for more than 0.3 seconds during rotation. Possible Causes ˇ 1-bin tray motor defective ˇ Too much load on the drive mechanism ˇ Poor motor connector connection

SC601: Communication Error between BICU and Scanner Unit
Definition [B'] The BICU cannot communicate with the BIS board properly. Possible Causes ˇ Poor connection between the SIB and SIFB boards. ˇ Poor connection between the SIFB and BICU boards. ˇ SIB board defective ˇ SIFB board defective ˇ BICU board defective

SC602: Communication Error between BICU and HDD Control Board
Definition [B'] The BICU cannot communicate with the HDD control board properly. Possible Causes ˇ Poor connection between the BICU board and HDD control board ˇ HDD control board defective ˇ BICU board defective

SC620-1: Communication Error between BICU and ADF 1
Definition [B'] The BICU cannot receive a response signal three times when a communication error has occurred. Possible Causes ˇ Poor connection between the BICU board and ADF main board ˇ ADF main board defective ˇ BICU board defective

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SERVICE CALL CONDITIONS

SC620-2: Communication Error between BICU and ADF 2
Definition [B'] The BICU receives a "Break" signal from the ADF main board. Possible Causes ˇ Poor connection between the BICU board and ADF main board ˇ ADF main board defective ˇ BICU board defective

SC620-3: Communication Error between BICU and ADF 3
Definition [B'] The BICU sends a command to the ADF main board which does not operate an ADF function. Possible Causes ˇ Poor connection between the BICU board and the ADF main board ˇ ADF main board defective ˇ BICU board defective

SC621: Communication Error between BICU and Finisher
Definition [B'] The BICU cannot communicate with the finisher properly. Possible Causes ˇ Poor connection between the BICU board and the finisher main board ˇ Finisher main board defective ˇ BICU board defective

SC623: Communication Error between BICU and Paper Tray Unit
Definition [B'] The BICU cannot communicate with the paper tray unit properly. Possible Causes ˇ Poor connection between the BICU board and the paper tray unit main board ˇ Paper tray unit main board defective ˇ BICU board defective
Troubleshooting SM 7-17 A283/A284

SERVICE CALL CONDITIONS

SC624: Communication Error between BICU and LCT
Definition [B'] The BICU cannot communicate with the LCT properly. Possible Causes ˇ Poor connection between the BICU board and the LCT main board ˇ LCT main board defective ˇ BICU board defective

SC630: CSS (RSS) Communication Error between Line Adapter and CSS Center [D]
ˇ Japan Only

SC700: ADF Original Pick-up Malfunction
Definition [B'] The original stopper H.P sensor does not activate three times consecutively after the pick-up motor has turned on. Possible Causes ˇ Original stopper H.P sensor defective ˇ Pick-up motor defective ˇ Timing belt out of position ˇ ADF main board defective

SC701: ADF Original Pick-up Malfunction
Definition [B'] The original pick-up H.P sensor does not activate three times consecutively after the pick-up motor has turned on. Possible Causes ˇ Original pick-up H.P sensor defective ˇ Pick-up motor defective ˇ ADF main board defective

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SERVICE CALL CONDITIONS

SC722: Finisher Jogger Motor Error
Definition [B'] 1) The finisher jogger H.P sensor remains de-activated for a certain time when returning to home position. 2) The finisher jogger H.P sensor remains activated for a certain time when moving away from home position. Possible Causes ˇ Jogger H.P sensor defective ˇ Jogger motor defective

SC724: Finisher Staple Hammer Motor Error
Definition [B'] Stapling does not finish for more than 600 ms after the staple hammer motor turned on. Possible Causes ˇ Staple hammer motor defective ˇ 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 ˇ Stack feed-out H.P sensor defective ˇ Stack feed-out motor defective

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.
Troubleshooting 7-19 A283/A284

Possible Causes ˇ Shift motor defective ˇ Shift tray lift motor defective

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SERVICE CALL CONDITIONS

SC727: Finisher Stapler Rotation Motor Error
Definition [B'] 1) Stapler rotation does not finish within a certain time after the staple rotation motor turned on. 2) The stapler does not return to its home position within a certain time after stapling finished. Possible Causes ˇ Stapler rotation motor defective ˇ 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 ˇ Punch motor defective ˇ Punch H.P sensor defective ˇ Poor punch motor connection

SC730: Finisher Stapler Position Motor Error
Definition [B'] 1) The stapler does not return to its home position within a certain time after the stapler motor turned on. 2) The stapler H.P sensor does not activate within a certain time after the stapler motor turned on. Possible Causes ˇ Stapler motor defective ˇ Stapler H.P sensor defective ˇ Poor stapler motor connection

SC900: Electrical Total Counter Error
Definition [A] The value of the total counter has already exceeded 9,999,999 Possible Causes ˇ NVRAM defective

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SERVICE CALL CONDITIONS

SC951: F-gate Signal Error 2
Definition [B'] When the IPU has already received the F-gate signal, the IPU receives another F-gate signal. Possible Causes ˇ BICU defective

SC954: Printer Image Setting Error
Definition [B'] The settings that are required for image processing using the printer controller are not sent from the IPU. Possible Causes ˇ 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 ˇ Software defective

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 ˇ 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 ˇ Software defective

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Troubleshooting

SERVICE CALL CONDITIONS

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 ˇ 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 ˇ 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 ˇ Software defective

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 ˇ Software defective

SC980: HDD Access Error
Definition [B'] Incorrect parameter sent from the BICU to the MSU. Possible Causes ˇ Software defective ˇ Poor connection between BICU and MSU.

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SERVICE CALL CONDITIONS

SC981: HDD Response Error
Definition [B'] The HDD control board does not generate any response when the IPU sends a read/write signal to the MSU. Possible Causes ˇ Software defective ˇ Poor connection between BICU and MSU ˇ HDD defective

SC982: HDD Construction Error
Definition [B'] 1) The HDD has been installed without the electric sort kit (SIMM memory). 2) A HDD that does not have the correct specifications has been installed. Possible Causes ˇ Hard disk defective ˇ Incorrect hard disk type ˇ The electric sort kit is not installed

SC990: Software Performance Error
Definition [B'] The software performs an unexpected function. Possible Causes ˇ Software defective ˇ When this SC occurs, the file name, address, and data will be stored in the NVRAM. These data can be checked by using SP 7-901. ˇ 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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Troubleshooting

ELECTRICAL COMPONENT DEFECTS

7.2 ELECTRICAL COMPONENT DEFECTS
7.2.1 SENSORS
Component (Symbol) Scanner Home Position (S1) Platen Cover (S2) Original Width (S3) CN 505-5 (SIB) 505-8 (SIB) 501-A3, 4 (SIB) Condition Open Shorted Open Shorted Open Shorted Original Length-1 (S4) 501-A8, 9 (SIB) Open Shorted Original Length-2 (S5) 501-A13 (SIB) Open Shorted LD Unit Home Position (S6) 220-2 (IOB) 204-3 (IOB) 203-B2 (IOB) Registration (S9) 207-B2 (IOB) Image Density (ID) (S10) Upper Paper Height (S11) 219-5 (IOB) 235-2 (PFB) Open Shorted Open Shorted Open Shorted Open Shorted Open Shorted Open Shorted Lower Paper Height (S12) 236-2 (PFB) Shorted Open SC328 is displayed when the laser beam pitch is changed. SC327 is displayed when the laser beam pitch is changed. The add toner indicator blinks even if there is toner in the development unit. SC390-01 is displayed. The Paper Jam indicator will light whenever a copy is made. The Paper Jam indicator lights even if there is no paper. The Paper Jam indicator lights even if there is no paper. The Paper Jam indicator will light whenever a copy is made. SC350-03 is displayed after copying. SC350-01 is displayed after copying. Add Paper is displayed even if there is paper. If this condition occurred four times, SC501-02 will be displayed. SC501-01 is displayed. Add Paper is displayed even if there is paper. If this condition occurred four times, SC502-02 will be displayed. SC502-01 is displayed. The CPU cannot detect the original size properly. APS and ARE do not function correctly. The CPU cannot detect the original size properly. APS and ARE do not function correctly. Symptom SC121 is displayed. SC120 is displayed. APS and ARE do not function properly. No symptom. The CPU cannot detect the original size properly. APS and ARE do not function correctly.

Toner Density (TD) (S7) Paper Exit (S8)

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ELECTRICAL COMPONENT DEFECTS Component (Symbol) Upper Paper End (S13) CN Condition Open 235-8 (PFB) Shorted Open 236-8 (PFB) Shorted Open Shorted Open Shorted Open Shorted Open Shorted Open Shorted Symptom The Paper End indicator lights even if paper is placed in the upper paper tray. The Paper End indicator does not light even if there is no paper in the upper paper tray. The Paper End indicator lights even if paper is placed in the lower paper tray. The Paper End indicator does not light even if there is no paper in the lower paper tray. The Paper Jam indicator will light whenever a copy is made. The Paper Jam indicator lights even if there is no paper. The Paper Jam indicator will light whenever a copy is made. The Paper Jam indicator lights even if there is no paper. Add Paper indicated even if there is paper. Add Paper indicated when the tray is set. Add Paper indicated even if there is paper. Add Paper indicated when the tray is set. No symptom SC403 is displayed

Lower Paper End (S14)

Upper Relay (S15)

235-5 (PFB)

Lower Relay (S16)

236-5 (PFB) 239-1 (PFB) 239-3 (PFB) 203-A8 (IOB)

Upper Tray (S17)

Lower Tray (S18)

Transfer Belt Position (S19)

7.2.2 SWITCHES
Component (Symbol) Right Lower Cover (SW1) CN 232-3 (PFB) 102-1~4 (PSU) 219-11 (IOB) Condition Open Shorted Open Shorted Open Shorted Symptom Doors/Covers Open is displayed even if the right lower cover is closed. The LCD goes blank when the lower cover is opened. The machine does not turn on. The machine does not turn off. Doors/Covers Open is displayed even if the front cover is closed. Doors/Covers Open is not displayed even if the front cover is opened.

Main (SW3) Front Cover Safety (SW4)

SM

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A283/A284

Troubleshooting

BLOWN FUSE CONDITIONS

7.3 BLOWN FUSE CONDITIONS
Rating 115 V 210 ~ 230 V Power Supply Board FU1 6.3 A/125 V 6.3 A/250 V Fuse FU2 FU3 FU4 FU5 FU101 FU102 FU103 6.3 A/125 V 4 A/125 V 6.3 A/125 V 6.3 A/125 V 15 A/125 V 8 A/125 V 2 A/125 V 6.3 A/250 V 4 A/250 V 6.3 A/250 V 6.3 A/250 V --5 A/250 V 1 A/250 V Symptom when turning on the main power switch "Doors/Covers Open" is displayed "Doors/Covers Open" for the finisher is displayed Paper end condition SC121 is displayed One of SC302, or SC403, or SC405 is displayed No response No response Normal operation (optional heaters do not work)

A283/A284

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