• Code: E600
• Description: EEPROM error (main unit). When a write error occurs in the Main Unit EEPROM check.
• Causes: • Control Board (PWB-A)
• Remedy: 1 Replace the PWB-A.

• Code: E605
• Description: EEPROM error (optical unit). When the printer is not put in a ready status if the predetermined time has elapsed after execution of access control to the EEPROM of the P/H Assy at power-on.
• Causes: • P/H Assy • Control Board (PWB-A)
• Remedy: 1 Check the P/H Assy connector connection status, and correct if it is improper. 2 Replace the P/H Assy. 3 Replace the PWB-A.

• Code: E610
• Description: EEPROM error 2
• Causes:
• Remedy:

• Code: E711
• Description: Color matching LSI error (R/W error). When a read or write error is detected at access to the Color Matching LSI.
• Causes: • Correction Board • Control Board (PWB-A)
• Remedy: 1 Check the Correction Board connection status, and correct if it is improper. ¯ ¯ ¯ 2 Replace the Correction Board. ¯ ¯ ¯ 3 Replace the PWB-A.

• Code: E720
• Description: Pick Motor error. When the fire check detection signal is detected as High during motor rotation.
• Causes: • Paper Loading Drive Motor (M1) • PF Drive Motor (M2) • Duplex Unit Drive Motor (M10) • Duplex Feeding Unit Motor (M11) • Fuser Drive Motor (M3) • Manual Feed Detection Board (PWB-Y) • Duplex Unit Control Board (PWB-X) • Control Board (PWB-A)
• Remedy: 1 Check the motor connector connection status, and correct if it is improper. 2 Check the motor drive coupling status, and correct if it is improper. 3 Check the operation of M1. p115 PWB-A CNSTM-A-5~8 (Pulse) 14-B 4 Replace the PWB-A.

• Code: E721
• Description: Register Motor error. When the fire check detection signal is detected as High during motor rotation.
• Causes: • Paper Loading Drive Motor (M1) • PF Drive Motor (M2) • Duplex Unit Drive Motor (M10) • Duplex Feeding Unit Motor (M11) • Fuser Drive Motor (M3) • Manual Feed Detection Board (PWB-Y) • Duplex Unit Control Board (PWB-X) • Control Board (PWB-A)
• Remedy: 1 Check the motor connector connection status, and correct if it is improper. 2 Check the motor drive coupling status, and correct if it is improper. 3 Check the operation of M2. p115 PWB-A CNSTM-A-1~4 (Pulse) 12-A 4 Replace the PWB-A.

• Code: E722
• Description: Duplex Motor error. When the fire check detection signal is detected as Low during motor rotation.
• Causes: • Paper Loading Drive Motor (M1) • PF Drive Motor (M2) • Duplex Unit Drive Motor (M10) • Duplex Feeding Unit Motor (M11) • Fuser Drive Motor (M3) • Manual Feed Detection Board (PWB-Y) • Duplex Unit Control Board (PWB-X) • Control Board (PWB-A)
• Remedy: 1 Check the motor connector connection status, and correct if it is improper. 2 Check the motor drive coupling status, and correct if it is improper. 3 Check the operation of M10. p115 PWB-X PJ2-X-1~4 (Pulse) 22-H 4 Replace the PWB-X. 5 Replace the PWB-A.

• Code: E723
• Description: Duplex Feeding Unit Motor error. When the fire check detection signal is detected as Low during motor rotation.
• Causes: • Paper Loading Drive Motor (M1) • PF Drive Motor (M2) • Duplex Unit Drive Motor (M10) • Duplex Feeding Unit Motor (M11) • Fuser Drive Motor (M3) • Manual Feed Detection Board (PWB-Y) • Duplex Unit Control Board (PWB-X) • Control Board (PWB-A)
• Remedy: 1 Check the motor connector connection status, and correct if it is improper. 2 Check the motor drive coupling status, and correct if it is improper. 3 Check the operation of M11. p115 PWB-Y PJ2-Y-1~4 (Pulse) 22-F 4 Replace the PWB-Y. 5 Replace the PWB-A.