• Code: C0870
• Description: Fax control PWB to main PWB high capacity data transfer problem High-capacity data transfer between the fax control PWB and the scanner MIP PWB was not normally performed even if the data transfer was retried 10 times.
• Causes: Poor contact in the connector terminals. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of the main PWB and the fax control PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective PWB. Replace the fax control PWB or main PWB and check for correct operation.

• Code: C0880
• Description: Program archive problem (optional fax) When power is turned on, the compressed program in the Flash ROM on the fax control PWB was not successfully decompressed.
• Causes: Defective fax software. Defective fax control PWB.
• Remedy: Defective fax software. Install the fax software.
  Defective fax control PWB. Replace the fax control PWB and verify the operation.

• Code: C0890
• Description: Fax control PWB CG FONT archive problem (optional fax) When power is turned on, the compressed CG font in the Flash ROM on the fax control PWB was not successfully decompressed.
• Causes: Defective fax software. Defective fax control PWB.
• Remedy: Defective fax software. Install the fax software.
  Defective fax control PWB. Replace the fax control PWB and verify the operation.

• Code: C0920
• Description: Fax file system error The backup data is not retained for file system abnormality of flash memory of the fax control PWB.
• Causes: Defective fax control PWB.
• Remedy: Defective fax control PWB. Replace the fax control PWB and verify the operation.

• Code: C0960
• Description: Developing unit EEPROM error Reading from or writing to EEPROM cannot be performed.
• Causes: Poor contact in the connector terminals. Defective developing unit.
• Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective developing unit. Replace the developing unit.

• Code: C1010
• Description: Upper lift motor error When cassette 1 is inserted, upper lift limit switch does not turn on within 12 s of upper lift motor turning on.
• Causes: Poor contact in the connector terminals. Broken gears or couplings of upper lift motor. Defective upper lift motor. Defective upper lift limit switch. Poor contact in the connector terminals. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector of upper lift motor and the connector YC23 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of upper lift motor. Replace upper lift motor.
  Defective upper lift motor. Check for continuity across the coil. If none, replace upper lift motor.
  Defective upper lift limit switch. Check if YC23-B9 on the engine PWB goes low when upper lift limit switch is turned off. If not, replace upper lift limit switch.
  Poor contact in the connector terminals. Check the connection of connector of upper lift limit switch and the connector YC23 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C1020
• Description: Lower lift motor error When cassette 2 is inserted, lower lift limit switch does not turn on within 12 s of lower lift motor turning on.
• Causes: Poor contact in the connector terminals. Broken gears or couplings of lower lift motor. Defective lower lift motor. Defective lower lift limit switch. Poor contact in the connector terminals. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector of lower lift motor and the connector YC23 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of lower lift motor. Replace lower lift motor.
  Defective lower lift motor. Check for continuity across the coil. If none, replace lower lift motor.
  Defective lower lift limit switch. Check if YC23-A2 on the engine PWB goes low when lower lift limit switch is turned off. If not, replace lower lift limit switch.
  Poor contact in the connector terminals. Check the connection of connector of lower lift limit switch and the connector YC23 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C1030
• Description: Paper feeder lift motor 1 error (optional paper feeder) When optional cassette 3 is inserted, paper feeder lift switch 1 does not turn on within 12 s of paper feeder lift motor 1 turning on.
• Causes: Poor contact in the connector terminals. Broken gears or couplings of paper feeder lift motor 1. Defective paper feeder lift motor 1. Defective paper feeder lift switch 1.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC22 on the engine PWB and the connector on the paper feeder main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of paper feeder lift motor 1. Replace paper feeder lift motor 1.
  Defective paper feeder lift motor 1. Check for continuity across the coil. If none, replace paper feeder lift motor 1.
  Defective paper feeder lift switch 1. Check if YC1-5 on the paper feeder main PWB goes low when paper feeder lift switch 1 is turned off. If not, replace paper feeder lift switch 1.