• Code: 8900
• Description: Document finisher backup error
  Read and write data does not match 3 times in succession.
• Causes: Defective connector cable or poor contact in the connector (4000-sheet finisher).
  Defective connector cable or poor contact in the connector (1000-sheet finisher).
  Improper installation EEPROM.
  Defective DF main PWB.
• Remedy: Defective connector cable or poor contact in the connector (4000-sheet finisher). Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. DF main PWB (YC4) and engine PWB (YC18)
  Defective connector cable or poor contact in the connector (1000-sheet finisher). Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. DF main PWB (YC7) and engine PWB (YC18)
  Improper installation EEPROM. Check the installation of the EEPROM and remedy if necessary.
  Defective DF main PWB. Replace the DF main PWB and check for correct operation.

• Code: 8930
• Description: Center-folding unit backup error
  Read and write data does not match 3 times in succession.
• Causes: Defective connector cable or poor contact in the connector.
  Improper installation EEPROM.
  Defective CF 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. CF main PWB (YC7) and DF main PWB (YC9)
  Improper installation EEPROM. Check the installation of the EEPROM and remedy if necessary.
  Defective CF main PWB. Replace the CF main PWB and check for correct operation.
  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 (YC1) and ISC PWB (YC12) ISC PWB (YC3) and main PWB (YC11)
  Defective PWB. Replace the DP main PWB or the ISC PWB and check for correct operation.

• Code: 9000
• Description: Document processor communication error
  Communication with the document processor is not possible.
• Causes: Defective connector cable or poor contact in the connector
  Defective 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 (YC1) and ISC PWB (YC12) ISC PWB (YC3) and main PWB (YC11)
  Defective PWB. Replace the DP main PWB or the ISC PWB and check for correct operation.

• Code: 9010
• Description: Coin vender communication error
  A communication error from coin vender is detected 10 times in succession.
• Causes: Defective connector cable or poor contact in the connector.
  Data setup failure.
  Defective coin vender control PWB.
  Defective 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.
  Data setup failure. Set maintenance mode U206 to off when a coin vender is not installed.
  Defective coin vender control PWB. Replace the coin vender control PWB.
  Defective PWB. Replace the main PWB and check for correct operation.

• Code: 9040
• Description: DP lift motor going up error
  When the DP lift motor is driven, DP lift sensor 1 does not turn on within 2 s.
• Causes: Defective connector cable or poor contact in the connector.
  Defective DP lift sensor 1.
  Defective DP lift motor.
  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 lift motor and DP main PWB (YC5) DP lift sensor 1 and DP main PWB (YC4)
  Defective DP lift sensor 1. Replace the DP lift sensor 1.
  Defective DP lift motor. Replace the DP lift motor.
  Defective DP main PWB. Replace the DP main PWB and check for correct operation.

• Code: 9050
• Description: DP lift motor going down error
  When the DP lift motor is driven, DP lift sensor 2 does not turn on within 2 s.
• Causes: Defective connector cable or poor contact in the connector.
  Defective DP lift sensor 2.
  Defective DP lift motor.
  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 lift motor and DP main PWB (YC5) DP lift sensor 2 and DP main PWB (YC2)
  Defective DP lift sensor 2. Replace the DP lift sensor 2.
  Defective DP lift motor. Replace the DP lift motor.
  Defective DP main PWB. Replace the DP main PWB and check for correct operation.

• Code: 9060
• Description: DP EEPROM error
  Mismatch of reading data from two locations occurs 3 times successively. Mismatch between writing data and reading data occurs 3 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: 9070
• Description: Communication error between DP and SHD
  A communication error is detected.
• Causes: Defective connector cable or poor contact in the connector.
  Defective DPSHD 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. DPSHD PWB (YC1) and DP main PWB (YC10)
  Defective DPSHD PWB. Replace the DPSHD PWB and check for correct operation.