• Code: 8900
• Description: Backup memory data problem (document finisher)
  Read and write data does not match 3 times in succession.
• Causes: Defective connector cable or poor contact in the connector. EEPROM installed incorrectly. Defective finisher main PWB.
• Remedy: Defective connector cable or poor contact in the connector. Check the connection of connector on the finisher main PWB and the connector of the machine, and the continuity across the connector terminals. Repair or replace if necessary.
  EEPROM installed incorrectly. Install EEPROM correctly.
  Defective finisher main PWB. Replace the finisher main PWB and check for correct operation.

• Code: 9000
• Description: Document processor communication error
  A communication error is detected 10 times in succession.
• Causes: Defective connector cable or poor contact in the connector. Defective DP main PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. DP main PWB and engine PWB (YC18)
  Defective DP main PWB. Replace the DP main PWB and check for correct operation.

• Code: 9060
• Description: DP EEPROM error
  Mismatch between writing data and reading data occurs three times successively. Mismatch of reading data from two locations occurs three times successively.
• Causes: Defective DP main PWB. Device damage of EEPROM.
• Remedy: Defective DP main PWB. Replace the DP main PWB and check for correct operation.
  Device damage of EEPROM. Contact the Service Administrative Division.

• Code: 9500 ... 9520
• Description: Contact the Service Administrative Division.
• Causes:
• Remedy: Contact the Service Administrative Division.

• Code: F000
• Description: Main PWB - operation panel PWB communication error
• Causes: Defective main PWB. Defective operation panel PWB.
• Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
  Defective operation panel PWB. Replace the operation panel PWB and check for correct operation.

• Code: F010 ... F013
• Description: Main PWB checksum errorn
• Causes: Defective main PWB.
• Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.

• Code: F040
• Description: Main PWB - print engine communication error
• Causes: Defective main PWB. Defective engine PWB.
• Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: F050
• Description: Print engine ROM checksum error
• Causes: Defective engine PWB.
• Remedy: Defective engine PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.