Ricoh MP C2004/C2504 Service Manual Part 15

[John]

SC code	Name
827-00	Self-diagnostics error: RAM
828-00	Self-diagnostics error: ROM
829-00	Self-diagnostics error: Optional Serial
833-00	Self-diagnostic error: Engine I/F ASIC
839-00	Self-diagnostic Error: Serial Flash
840-00	EEPROM access error
841-00	EEPROM read data error
850-00	Network I/F Error
862-00	Number of the defective sector reaches the maximum count
863-00 to 23	HDD data read failure
864-00 to 23	HD data CRC error
865-00 to 23	HDD access error
865-50 to 73	HDD time-out error
868-00 to 02	SD card authentication error
871-01	FCU error
875-01	Delete all error (HDD erasure) (hddchack –i error)
875-02	Delete all error (HDD erasure) (Data deletion failure)
875-03	Delete all error (HDD erasure)
880-00	MLB error
899-00	Software performance error (signal reception end)
919-00	External controller down
990-00	Software operation error
992-00	Undefined SC issued.
997-00	Application function selection error
998-00	Application start error

Troubleshooting

6.2.3 SC CODE CLASSIFICATION​

The table shows the classification of the SC codes:

Class	Section
SC1xx	Scanning
SC2xx	Exposure
SC3xx	Image Processing 1
SC4xx	Image Processing 2
SC5xx	Paper feed and Fusing
SC6xx	Communication
SC7xx	Peripherals
SC8xx	Overall System
SC9xx	Others

Troubleshooting

1. SERVICE CALL 101-195​

   1. SC100 (ENGINE: SCANNING)​

      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC101-01	D	LED Error (Scanning)
      The white level peak did not reach the prescribed threshold when the white guide plate was scanned.

      • Scanner Carriage defective
      • BCU defective
      • Connector defective (disconnected, loose)
      • Harness defective
      • IPU defective
      • Condensation in scanner unit
      • White Reference Seal dirty or installed incorrectly (sheet-through exposure glass)
      • White Guide Plate, or White Roller dirty or installed incorrectly (SPDF/ARDF)

      • SC No.	Type	Error Name/Error Condition/Major Cause/Solution
        		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.
        SC101-02	D	LED Error (LED illumination adjustment)
        LED error was detected.

      1. Clean the white guide plate, or white roller (SPDF/ARDF).
      2. Reconnect the following connectors;
         • Scanner Carriage - IPU harness (FFC)
         • SBU - LEDB harness (FFC)
         • IPU- BCU harness
      3. Check the white reference seal that attached back of sheet-through exposure glass. Replace the sheet-through exposure glass, if dirty or damaged.
      4. Replace the white guide plate, or white roller (SPDF/ARDF).
      5. Replace the Scanner Carriage.
      6. Replace the IPU.
      7. Replace the following harnesses;
         • Scanner Carriage - IPU harness (FFC)
         • IPU - BCU harness
      8. Replace the BCU.
      9. Connector defective (disconnected, loose)
      10. Scanner Carriage defective
      11. IPU defective
      12. Harness defective
      13. BCU defective

      14. SC No.	Type	Error Name/Error Condition/Major Cause/Solution
          		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      1. Reconnect the following connectors;
         • Scanner Carriage - IPU harness (FFC)
         • SBU - LEDB harness (FFC)
         • IPU- BCU harness
      2. Check the white reference seal that attached back of sheet-through exposure glass. Replace the sheet-through exposure glass, if dirty or damaged.
      3. Replace the Scanner Carriage.
      4. Replace the IPU.
      5. Replace the following harnesses;
         • Scanner Carriage - IPU harness (FFC)
         • IPU - BCU harness
      6. Replace the BCU.
      7. Troubleshooting
         
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC102-00	D	LED Illumination Adjustment Error
      The white level peak reached the prescribed threshold when the white plate was scanned after a specified number of adjustments.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • LED defective
      • IDB (LED driver) defective
      • SBU defective
      • IPU defective
      • Power/signal harness defective
      • Reconnect the power/signal harness.
      • Replace the following parts:
        • Replace the Scanner Carriage.
        • Replace the IPU board.
        • Replace the power/signal harness.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC120-00	D	Scanner Home Position Error 1
      The scanner home position sensor does not go OFF. Details: Error detection timing
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.

      • During homing (when the machine is turned ON or when it returns from energy save mode)
      • During an automatic adjustment (when the machine is turned ON or when it returns from energy save mode)
      • During a scan from the ADF/ARDF or exposure glass.
      • Scanner motor driver defective
      • Scanner motor defective
      • Scanner HP sensor defective
      • Harness defective
      • Timing belt, pulley, wire, or carriage not installed correctly
      • Replace the following parts:
        • Replace the HP sensor
        • Replace the scanner motor
        • Replace the harness.

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC121-00	D	Scanner Home Position Error 2
      The scanner home position sensor does not go ON. Details: Error detection timing
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.

      • During homing
      • During an automatic adjustment
      • During a scan from the ADF/ARDF or exposure glass.
      • Scanner motor driver defective
      • Scanner motor defective
      • Scanner HP sensor defective
      • Harness defective
      • Timing belt, pulley, wire, or carriage not installed correctly
      • Replace the following parts:
        • Replace the home position sensor
        • Replace the scanner motor
        • Replace the harness.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC141-00	D	Black level detection error
      The black level cannot be adjusted within the target during auto gain control.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • Scanner Carriage defective
      • IPU defective
      • Harness defective
      • BCU defective
      • Reconnect the following connectors;
        • Scanner Carriage - IPU harness (FFC)
        • IPU- BCU harness
      • Replace the Scanner Carriage.
      • Replace the IPU.
      • Replace the following harnesses;
        • Scanner Carriage - IPU harness (FFC)
        • IPU - BCU harness
      • Replace the BCU.
        

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC142-00	D	White level detection error
      The white level cannot be adjusted to the second target level within the target during auto gain control.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • Scanner Carriage defective
      • IPU defective
      • Harness defective
      • Connector defective (disconnected, loose)
      • Condensation in scanner unit
      • White plate dirty or installed incorrectly
      • Reconnect the following connectors;
        • Scanner Carriage - IPU harness (FFC)
        • SBU - LEDB harness (FFC)
        • IPU- BCU harness
      • Check the white reference seal that attached back of sheet-through exposure glass. Replace the sheet-through exposure glass, if dirty or damaged.
      • Replace the scanner carriage.
      • Replace the IPU.
      • Replace the following harnesses;
        • Scanner Carriage - IPU harness (FFC)
        • IPU - BCU harness
      • Replace the BCU.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC144-00	D	SBU Communication Error
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • The machine cannot detect that the Scanner Carriage is connected.
      • The machine cannot communicate with the Scanner Carriage.
      • The communication data is incorrect.
      • Scanner Carriage defective
      • IPU defective
      • BCU defective
      • Harness defective
      • Reconnect the following connectors;
        • Scanner Carriage - IPU harness (FFC)
        • IPU- BCU harness
      • Replace the Scanner Carriage.
      • Replace the IPU.
      • Replace the BCU.
      • Replace the following harnesses;
        • Scanner Carriage - IPU harness (FFC)
        • IPU - BCU harness

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC151-00	D	Black Level Error: Side 2
      The black level scanned is not specified range.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • CIS for SPDF defective
      • SPDF main board defective
      • Harness defective
      • Reconnect the SPDF main board - CIS connectors if they are disconnected, or loose.
      • Replace the CIS for SPDF
      • Replace the following harnesses;
        • SPDF main board - CIS
        • IPU -SPDF main board
      • Replace the SPDF main board.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC152-00	D	White Level Error: Side 2
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • The shading data peak value read out from the CIS is not specified range from the target value.
      • CIS defective
      • White roller defective
      • SPDF main board defective
      • Harness defective
      • Reconnect the SPDF main board - CIS connectors if they are disconnected, or loose.
      • Replace the CIS for SPDF
      • Replace the following harnesses;
        • SPDF main board - CIS
        • IPU -SPDF main board
      • Replace the SPDF main board.
        

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC154-00	D	Scanner Communication Error: Side 2
      The value read out from the ASIC and FROM area inside the CIS is different from the expected value.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • CIS defective
      • "FROM" area error
      • SPDF main board defective
      • Connector defective (loose, broken)
      • Reconnect the SPDF main board - CIS connectors if they are disconnected, or loose.
      • Replace the CIS for SPDF
      • Replace the following harnesses;
        • SPDF main board - CIS
        • IPU -SPDF main board
      • Replace the SPDF main board.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC161-02	D	IPU error (Lsync Error: Side 2)
      The machine detects the error from the results of self-diagnostic test before scanning the side 2.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • harness defective between CIS and IPU (disconnected, loose)
      • CIS defective
      • IPU defective (ASIC: Macaron error)
      • Reconnect the IPU - CIS connectors if they are disconnected, or loose.
      • Replace the CIS for SPDF.
      • Replace the IPU - CIS harness.
      • Replace the IPU.
        
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC161-20	D	IPU error (DRAM initialization failure)
      An error occurred during performed every time the machine is turned on, or returns to full operation from energy save mode.
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • IPU defective (Macaron/ DRAM device connection error)
      • DRAM device defective
      • Reconnect the all connectors on IPU board if they are disconnected, or loose.
      • Replace the IPU, and BCU.
        

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC195-00	D	Machine serial number error
      Comparison of the product identification code in the machine serial number (11 digits).
      The product identification code in the machine serial number (11 digits) does not match.
      Re-enter the machine serial number.

      
      Troubleshooting
      

2. SERVICE CALL 202-285​

   1. SC200 (ENGINE: IMAGE WRITING)​

      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC202-00	D	Polygon Motor: ON Timeout Error
      After the polygon motor turned on, or within the specified time (sec.) after the rpm’s changed, the motor did not enter READY status.

      • The interface harness to the polygon motor driver damaged or not connected correctly.
      • Polygon motor or polygon motor driver defective
      • Polygon motor drive pulse cannot be output correctly. (Polygon controller)
      • XSCRDY signal observation failing (Polygon controller)
      • Turn the main power OFF/ON.
      • Reconnect the connectors between LD unit and IPU.
      • Check CN586 (a connector with 1 pin) for the polygon mirror motor from the PSU.
      • Replace the LD unit (Polygon mirror motor).
      • Replace the harness between the LD unit and IPU.
      • Replace the IPU.
      • Replace the PSU (or fuses on PSU).
        

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC203-00	D	Polygon Motor: OFF Timeout Error
      The XSCRDY signal (polygon ready) never becomes inactive (H) within 3 sec. after the polygon motor went OFF.

      • The interface harness to the polygon motor driver damaged or not connected correctly.
      • Polygon motor or polygon motor driver defective
      • Polygon motor drive pulse cannot be output correctly. (Polygon controller)
      • XSCRDY signal observation failing (Polygon controller)
      • Turn the main power OFF/ON.
      • Reconnect the harness between LD unit and IPU.
      • Check CN586 (a connector with 1 pin) for the polygon mirror motor from the PSU.
      • Replace the LD unit (Polygon mirror motor).
      • Replace the harness between the LD unit and IPU.
      • Replace the IPU.
      • Replace the PSU (or fuses on PSU).
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC204-00	D	Polygon Motor: XSCRDY Signal Error
      During polygon motor rotation, the XSCRDY signal was inactive (H) for longer than one rotation of the polygon.

      • The interface harness to the polygon motor driver damaged or not connected correctly.
      • Polygon motor or polygon motor driver defective
      • Turn the main power OFF/ON.
      • Reconnect the connectors between LD unit and IPU.
      • Check CN586 (a connector with 1 pin) for the polygon mirror motor from the PSU.
      • Replace the LD unit (Polygon mirror motor).
      • Replace the harness between the LD unit and IPU.
      • Replace the IPU.
      • Replace the PSU (or fuses on PSU).
        

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC220-01	D	Leading Edge: LD1 synchronization detection error: Bk
      SC220-04	D	Leading Edge: LD1 synchronization detection error: Ye
      		The leading edge LD0 synchronization detection signal of the corresponding color was not output within the specified time (sec.) while the polygon mirror motor was operating at normal speed.

      • The interface harness to the synchronization detection unit damaged or not connected correctly.
      • Synchronization detection board defective
      • Beam does not enter photo detector.
      • Abnormality around GAVD
      • LDB defective
      • Turn the main power OFF/ON.
      • Check for condensation on the LDB.
      • Reconnect the connectors between LDB (Synchronizing detector board) and IPU.
      • Replace the LD unit.
      • Replace the IPU
      • Replace the harness between LDB (Synchronizing detector board) and IPU.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC230-01	D	FGATE ON error: Bk
      SC230-02	D	FGATE ON error: Cy
      SC230-03	D	FGATE ON error: Ma
      SC230-04	D	FGATE ON error: Ye
      		The FGATE signal did not turn ON within the specified time (sec.) after the writing process of the corresponding color started.

      • Image processing ASIC defective on IPU
      • Harness between IPU and LDB defective
      • Turn the main power OFF/ON.
      • Reconnect the connectors between IPU and controller board.
      • Replace the IPU.
        
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC231-01	D	FGATE OFF error: Bk
      SC231-02	D	FGATE OFF error: Cy
      SC231-03	D	FGATE OFF error: Ma
      SC231-04	D	FGATE OFF error: Ye

      • The FGATE signal did not turn OFF within the specified time (sec.) after the writing process of the corresponding color ended.
      • The FGATE signal did not turn OFF when the next job of the corresponding color started.
      • Image processing ASIC defective on IPU
      • Harness between IPU and LDB defective

      • SC No.	Type	Error Name/Error Condition/Major Cause/Solution

      1. Turn the main power OFF/ON.
      2. Reconnect the connectors between IPU and controller board.
      3. Replace the IPU.
         
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC240-01	D	LD error: Bk
      SC240-02	D	LD error: Cy
      SC240-03	D	LD error: Ma
      SC240-04	D	LD error: Ye

      • If LD error terminal of LD driver of corresponding color is asserted after LD initialization.
      • If an error is detected during initialization of LD driver which detects Ith/Ieta of LD of corresponding color.
      • LD degradation (LD broken, shift of output characteristics etc.)
      • The interface harness damaged or not connected correctly.
      • LD driver defective
      • Turn the main power OFF/ON.
      • Check the value in SP2-110-001 to 004 (LD Driver), the default is "0h".
        • If current value is "0", perform step 4.
        • If current value is "1", perform steps 3 and 5.
      • Reconnect the connectors between LDB and IPU.
      • Replace the LD unit
      • Replace the harness between LDB to IPU.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC272-01	D	LD driver communication error: Bk
      SC272-02	D	LD driver communication error: Cy
      SC272-03	D	LD driver communication error: Ma
      SC272-04	D	LD driver communication error: Ye
      		In view of parity, 3 retries were performed

      • BCU defective
      • Harness defective
      • LDB defective
      • Turn the main power OFF/ON.
      • Reconnect the following connectors;
        • LDB-IPU harness
        • IPU-BCU harness
      • Replace the LD unit.
      • Replace the BCU.
      • Replace the following harnesses;
        • LDB-IPU harness
        • IPU-BCU harness

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC272-10	D	LD driver communication error: Other
      LD voltage does not satisfy the specified voltage (5 V).

      • BCU defective (LD5V Power error)
      • LDB defective (LD drive error)
      • LDB connector defective (loose, broken)
      • Interlock switch defective
      • Turn the main power OFF/ON.
      • Reconnect the connectors between LDB and IPU.
      • Replace the IPU.
      • Replace the LD unit.
      • Replace the harness between LDB and IPU.
      • Replace the interlock switch.
        
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC285-01	C	Laser optics positioning motor (in LD unit) ower control error
      The power supply from PSU is not supplied to the laser optics positioning motors.

      • Software error
      • Imaging IOB defective
      • BCU defective
      • Turn the main power OFF/ON.
      • Update the firmware.
      • Replace the imaging IOB.
      • Replace the BCU.
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC285-02	C	MUSIC error
      The results of MUSIC pattern reading failed 4 times. (even if mode e (real time MUSIC) fails, the error count is not incremented (+1))
      For details about cause and solution, refer to page 6-219 "When SC285-02 (MUSIC Error) Is Displayed".

3. SERVICE CALL 312-396​

   1. SC300 (ENGINE: CHARGE, DEVELOPMENT)​

      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC312-01	D	Charge Roller HVP_CB Output Error (K)
      SC312-02	D	Charge Roller HVP_CB Output Error (C)
      SC312-03	D	Charge Roller HVP_CB Output Error (M)
      SC312-04	D	Charge Roller HVP_CB Output Error (Y)
      		Charging AC is set to ON at the standard speed, and the FB voltage of the charging AC of each color is monitored for 200 ms at 20ms intervals (10 times) after 80ms of charge AC_ON, and below 0.3V is detected continuously for 200ms (10 times), the SC of the corresponding color lights up, and machine operation is suspended.

      • High voltage harness defective or shorted.
      • PCU setting fault or damage
      • HVP_CB fault
      • Connector disconnected
      • Harness broken

      • SC No.	Type	Error Name/Error Condition/Major Cause/Solution
        Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      1. Check the PCU for the following points and recover or replace the PCU if there are any defects.
         • Checking contaminants on the Charge Roller terminal [A]
         • Checking damage or deformation of the Charge Roller terminal [A]
         • Checking continuity to the Charge Roller terminal core bar
           
         
         [*]Check if all connectors related to PCDU are connected securely. Replace the connectors if they are disconnected, or loose.
         [*]Recover or replace the parts of the main machine if there are any defects after checking the following points.
         
         • Checking contaminants on the charged power supplying plate [C]
         • Checking damage or deformation of the charged power supplying plate [C]
         • Checking continuity between the Charge Roller terminal core bar and the HVP (CB)
         [*]Replace the HVP (CB).
         [*]If SC occurs again, replace the BCU.
         [*]Troubleshooting
         
         
      
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC324-01	D	Development motor: Bk: Lock
      Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times

      • Motor defective
      • Connector disconnected
      • Harness broken
      • IOB defective
      • Development unit torque increased
      • Replace the motor
      • Reconnect the connector
      • Replace the harness
      • Replace the Imaging IOB.
      • Replace the development unit
        
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC324-05	D	Development motor: CMY: Lock
      Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times.

      • Motor defective
      • Connector disconnected
      • Harness broken
      • IOB defective
      • Development unit torque increased
      • Replace the motor
      • Reconnect the connector
      • Replace the harness
      • Replace the Imaging IOB.
      • Replace the development unit
      • Troubleshooting
        
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC360-01	D	TD sensor adjustment error (K)
      SC360-02	D	TD sensor adjustment error (C)
      SC360-03	D	TD sensor adjustment error (M)
      SC360-04	D	TD sensor adjustment error (Y)
      		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      1. Mu count is higher than the threshold which detects no developer.
      2. Mu count is lower than the upper/lower target thresholds three consecutive times.
      3. TD sensor defective
      4. Loose connection
      5. Harness broken
      6. Developer toner density differs from initial developer
      7. Check if all connectors related to TD sensor are connected securely. Replace the connectors if they are disconnected, or loose.
      8. Check the Development Unit for the following points and recover or replace it if there are any defects.
         • Gear came off
         • PCDU seal was not removed
         • Not initial developer
      9. Check the TD sensor and recover or replace it if there are any defects.
      10. Check the harness for TD sensor. Replace the harness if it is disconnected, or damaged.
      11. Replace the BCU if the SC cannot be recovered even after executing steps 1 to 4.
          

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC361-01	D	TD sensor output error: Upper Limit (K)
      SC361-02	D	TD sensor output error: Upper Limit (C)
      SC361-03	D	TD sensor output error: Upper Limit (M)
      SC361-04	D	TD sensor output error: Upper Limit (Y)
      		TD sensor output: Vt (SP3-210-001 to 004) > output upper limit error threshold (SP3-211-002) continuously exceeded the upper limit occurrence threshold value (SP3-211-003).
      TD sensor connector dropout (connection fault)

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Sensor :Exe Initial mu count). If they are initial, perform the TD sensor adjustment (SP3-030-001 to 006). Recovery Confirmation Procedure

      1. Check if all connectors related to TD sensor are connected securely. Replace the connectors if they are disconnected, or loose.
      2. Check the Development Unit for the following points and recover or replace it if there are any defects.
         • Gear comes off
         • Development unit is not installed correctly
      3. Check the TD sensor and recover or replace it if there are any defects.
      4. Check the values of SP3-030-061 to 064 (Init TD
      5. Check the Toner Supply Unit and recover or replace it if there are any defects. (When the image density is excessively low, the supply unit may have a possibility of abnormality)
         • Toner bottle is empty
         • Toner bottle drive error
         • Clogging in the supplying path
      6. Check the harness for TD sensor. Replace the harness if it is disconnected, or damaged.
      7. Replace the BCU if the SC cannot be recovered even after executing steps 1 to 6.
      8. Turn ON the main power, and then print a sheet.
      9. Execute SP3-320-***(TD.Sens:Vt isp: Current: CMYK) to check the output value of the TD sensor.
      10. Execute SP3-211-004 (Vt Limits Err isp Lower Threshold) to check the lower limit value.
          • Abnormal if the TD sensor output value is lower than the lower limit value
          • Normal if the TD sensor output value is equal to or larger than the lower limit value
      11. Troubleshooting
          
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC362-01	D	TD sensor output error: Lower limit (K)
      SC362-02	D	TD sensor output error: Lower limit (C)
      SC362-03	D	TD sensor output error: Lower limit (M)
      SC362-04	D	TD sensor output error: Lower limit (Y)
      		TD sensor output: Vt (SP3-210-001 to 004) < output lower limit error threshold (SP3-211-004) is continuously below the lower limit occurrence threshold value (SP3-211-005)
      TD sensor connector missing/dropout

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      		Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Sensor :Exe Initial mu count). If they are initial, perform the TD sensor adjustment (SP3-030-001 to 006). Recovery Confirmation Procedure

      1. Check if all connectors related to TD sensor are connected securely. Replace the connectors if they are disconnected, or loose.
      2. Check the Development Unit for the following points and recover or replace it if there are any defects.
         • Gear comes off
         • Development unit is not installed correctly
      3. Check the TD sensor and recover or replace it if there are any defects.
      4. Check the values of SP3-030-061 to 064 (Init TD
      5. Check the Toner Supply Unit and recover or replace it if there are any defects.
         • Toner bottle driving error (left rotating)
      6. Check the harness for TD sensor. Replace the harness if it is disconnected, or damaged.
      7. Replace the BCU if the SC cannot be recovered even after executing steps 1 to 6.
      8. Turn ON the main power, and then print a sheet.
      9. Execute SP3-320-***(TD.Sens:Vt isp: Current: CMYK) to check the output value of the TD sensor.
      10. Execute SP3-211-004 (Vt Limits Err isp Lower Threshold) to check the lower limit value.
          • Abnormal if the TD sensor output value is lower than the lower limit value
          • Normal if the TD sensor output value is equal to or larger than the lower limit value
      11. Troubleshooting
          
      
      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC370-01	D	TM (ID) sensor calibration error (F)
      SC370-02	D	TM (ID) sensor calibration error (C)
      SC370-03	D	TM (ID) sensor calibration error (R)
      		Regular reflection optical output voltage of the Front or Center or Rear TM (ID) sensor: Vsg_reg cannot be adjusted to within target range. Upper limit (SP3-320-013: initial value 4.5V) Lower limit (SP3-320-014: initial value 3.5V)
      For details about cause and solution, refer to page 6-222 "When SC370 (TM (ID) Sensor Calibration Error) Is Displayed".

      
      
      

      SC No.	Type	Error Name/Error Condition/Major Cause/Solution
      SC396-05	D	Drum motor (CMY) Lock
      Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times

      • Motor defective
      • Connector disconnected
      • Harness broken
      • IOB defective
      • Unit torque increased.
      • Replace the motor
      • Reconnect the connector
      • Replace the harness
      • Replace the Imaging IOB.
      • Replace the PCDU
        
      Troubleshooting
      
      
   
   [*]

   SERVICE CALL 441-498​

   
   

   1. SC400 (ENGINE: AROUND THE DRUM)​

      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC441-00	D	Drum transfer motor: Lock
      Motor status is observed at 100ms intervals during motor ON, and the unlock status is detected at least 20 times.

      • Motor defective
      • Connector disconnected
      • Harness broken
      • IOB defective
      • Unit torque increased.
      • Replace the motor
      • Reconnect the connector
      • Replace the harness
      • Replace the Imaging IOB.
      • Check the load on the motor (PCDU, Image transfer unit, Paper transfer unit, Waste toner bottle).
      • Replace the PCDU, Image transfer unit, Paper transfer unit or Waste toner bottle.
        
      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC442-00	D	ITB Lift Error
      Even though the ITB contact and release motor (also Toner supply motor (M)) rotates, the ITB contact and release sensor failed to detect the specified sensor feeler status within specified time.

      • Contact/separation operation: If not detected in 2000msec
      • Home position operation: If not detected in 5000msec
      • Signal detection sampling period: 10msec

      • SC No.	Level	Error Name/Error Condition/Major Cause/Solution

      • Image transfer unit not set/faulty setting
      • Sensor dirt
      • Sensor defective
      • Motor defective
      • Unit load large
      • Reset the Image transfer unit properly.
      • Clean the ITB contact and release sensor
      • Check the harness (disconnected, loose connectors)
      • Replace the ITB contact and release sensor
      • Replace the image transfer unit
      • Replace the contact and release drive unit
        
      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC452-00	D	Paper transfer contact motor error
      Paper transfer contact motor: position sensor cannot detect the sensor filler state within the predetermined time (see below) even if the paper transfer contact and release motor is rotated.

      • Contact operation: If not detected in 2000msec
      • Home position operation: If not detected in 5000msec
      • Signal detection sampling period: 10msec
      • Sensor dirt
      • Sensor defection
      • Motor defection
      • Unit load large
      • Replace the contact drive unit
      • Replace the image transfer unit
      • Check the harness
      • Troubleshooting
        
      
      
      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC491-00	D	High voltage power source: charge/development: output error
      SC detection signal (charge/development) is L (abnormal) for 200 ms consecutively during high voltage (charge/development) output.
      H/W error

      • Output contact setting fault
      • Controller connector set fault
      • Ground fault of output high voltage path
      • Surface/air clearance insufficient (arc discharge)
      • Controller harness disconnection, short-circuit
      • PCU setting fault
      • Control board _IOB error (related signal error)
      • HVP_CB error Load error
      • Grounding fault of charging output, short-circuit with other outputs
      • Surface/air clearance insufficient in charging output path (including distance from other outputs)
      • Abnormal deterioration of drum, and over current due to pinholes
      • Drum vs charge roller gap error (PCU error).
      • Over current due to drum surface condensation
      • Grounding fault of developing output, short-circuit with other outputs
      • Surface/air clearance insufficient in developing output path (including distance from other outputs)
      • Other
      • Turn the main power OFF/ON.
      • Reset or replace the harness of high voltage power supply feed path
      • Reset or replace the harness between IOB-HVP_CB
      • Reset or replace the PCU
      • Check the operation of the contact mechanism
      • Replace the HVP_CB
      • Replace the Imaging IOB.
        

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC492-00	C	High voltage power source: image transfer/paper transfer: output error
      SC detection signal (transfer) is L (abnormal) for 200 ms consecutively during high voltage (transfer) output.
      H/W error

      • Output power connector setting fault
      • Controller connector setting fault
      • Output high voltage Harness disconnection
      • Controller harness disconnection, short-circuit
      • Transfer unit setting fault
      • Control board_ IOB error (related signal error)
      • HVP_TTS error Load error
      • Increase in paper transfer roller impedance (low temperature environment/impedance rise/impedance rise due to dirt)
      • Operation fault of paper transfer contact mechanism
      • Increase in image transfer belt impedance
      • Opening in load power supply path
      • Reset or replacement the harness of high voltage power supply feed path
      • Reset or replace the harness between IOB-HVP_TTS
      • Reset or replace the transfer unit
      • Check operation of the contact mechanism
      • Replace the HVP_TTS
      • Replace the Imaging IOB.
      • Troubleshooting
        
      
      
      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC497-00	C	Machine temperature detection thermistor error
      Temperature sensor output error: Below 0.56V, or above 3.0V
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • Connector disconnection or broken
      • Sensor (Thermistor) defective
      • Check if all connectors related to the Imaging Temperature Sensor (Thermistor) are connected securely. Reconnect the connectors if they are disconnected, or loose.
      • Replace the Imaging Temperature Sensor (Thermistor).
        
      
      

      SC No.	Level	Error Name/Error Condition/Major Cause/Solution
      SC498-00	C	Temperature and humidity sensor error
      Temperature sensor output error: Below 0.76V, or above 2.90V, or Moisture sensor output error: more than 2.4V
      Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step.

      • Sensor not setting (disconnection or broken)
      • Sensor defective
      • Check if all connectors related to the Temperature and Humidity Sensor are connected securely. Reconnect the connectors if they are disconnected, or loose.
      • Replace the Temperature and Humidity Sensor.
   [*]

   SERVICE CALL 501-584​

   
   

   1. SC500 (ENGINE: PAPER TRANSPORT 1: PAPER FEED, DUPLEX, TRANSPORT)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC501-01	B	1st Tray Lift Error (Main Machine)
The 1st tray lift motor error detection count reaches 3 times. (Up to 2 times, reset instruction is displayed)
1st tray upper limit sensor connector missing, malfunction, dirt 1st tray lift motor connector missing, disconnection, malfunction. Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor. Paper set incorrectly
Reload the paper. Remove the foreign object. Check the harness. Reset the connector. Replace Replace Replace 1st tray upper limit sensor, 1st tray lift motor 1st paper feed unit, 1st tray Paper transport IOB
SC501-02	B	1st Tray Descent Error (Main Frame)
The 1st tray descent motor error detection count reaches 5. (Up to 4, reset instruction is displayed.)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		1st tray upper limit sensor connector missing, malfunction, dirt 1st tray lift motor connector missing, disconnection, malfunction Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor. Paper set incorrectly Paper overload
Reset the paper. Remove the foreign object. Check the harness. Reset the connector. Replace Replace Replace 1st tray upper limit sensor, 1st tray lift motor 1st paper feed unit, 1st tray Paper transport IOB

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC502-01	B	2nd Tray Lift Error (Main Frame)
The 2nd tray lift motor error detection count reaches 3. (Up to 2, reset is displayed.)
2nd tray upper limit sensor connector missing, malfunction, dirt 2nd tray lift motor connector missing, disconnection, malfunction Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly
Reset the paper. Remove the foreign object. Check the harness. Reset the connector. Replace Replace Replace 2nd tray upper limit sensor, 2nd tray lift motor 2nd paper feed unit, 2nd tray Paper transport IOB
SC502-02	B	2nd Tray Descent Error (Main Frame)
The detection count of 2nd tray descent motor descent errors reaches a total of 5. (Up to 4, reset is displayed.)
2nd tray upper limit sensor connector missing, malfunction, and dirt 2nd tray lift motor connector missing, disconnection, malfunction Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly Paper overload

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Reset the paper. Remove the foreign object. Check the harness. Reset the connector. Replace Replace Replace 2nd tray upper limit sensor, 2nd tray lift motor 2nd paper feed unit, 2nd tray Paper transport IOB

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC503-01	B	3rd Tray Lift Error (Paper Feed Unit PB3150 (D694))
Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, and the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-02	B	3rd Tray Descent Error (Paper Feed Unit PB3150 (D694))
Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, and the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Paper overload Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-11	B	3rd Tray Lift Error (Upper Tray: Paper Feed Unit PB3220/PB3210 (D787))
Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, and the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC503-12	B	3rd Tray Descent Error(Upper Tray: Paper Feed Unit PB3220/PB3210 (D787))
Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position; the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Paper overload Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 3 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 3. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC504-21	B	4th Tray Lift Error (Lower Tray: Paper Feed Unit PB3220/PB3210 (D787))
Lift motor ascent error detection During tray initialization (upper limit not detected/lower limit detection), the tray base plate is raised to check the tray base plate position, but the upper limit sensor is not detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.
SC504-22	B	4th Tray Descent Error (Lower Tray: Paper Feed Unit PB3220/PB3210 (D787))
Lift motor descent error detection During tray initialization, the tray base plate is lowered to check the tray base plate position, but the upper limit sensor is detected although a predetermined time elapsed, for 3 times consecutively. (Up to 2 times consecutively, the bank transmits a "tray set incorrectly" to the main machine.)
Lift motor error/connector missing Upper limit sensor error/connector missing Harness broken Bank control board defective Paper overload Foreign object, such as paper scrap, is caught between the paper feed tray and the tray lift motor Paper set incorrectly

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Remove the jammed paper or slip of paper from the tray, and check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in Tray 4 are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in Tray 4. Replace the harnesses if it is disconnected, or damaged. Check if the motor runs, sensors turn OFF/ON, has no overloads, and is properly driven. Replace the parts if there are any defects. Check if there are any signs of a short circuit. Replace the parts if there are any defects.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC508-00	B	Bypass Tray Size Detection Error
The paper size detected on the bypass tray is different from any of the pattern of automatic size detection.
Bypass length sensor or bypass width sensor malfunction Bypass length sensor or bypass width sensor harness disconnected
Replace the Bypass Length Sensor, or Bypass Width Sensor. Replace the harness for bypass length sensor, or bypass width sensor.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC520-01	C	Registration Motor: Lock
SC520-02	C	Paper feed Motor: Lock
SC520-03	C	Transport Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 0.5 sec, the error state of either register was detected at least 5 times.
Motor defective Connector disconnected Harness broken IOB defective Encoder defective
Replace the motor. Reset the connector. Replace the harness. Replace the paper transport IOB.