• 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 connector on the interface PWB and the connector on 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: 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: C1010
• Description: Lift motor 1 error
  After cassette 1 is inserted, lift switch 1 does not turn on within 12 s. This error is detected four times successively.
• Causes: Poor contact in the connector terminals.
  Broken gears or couplings of lift motor 1.
  Defective lift motor 1.
  Poor contact in the connector terminals.
  Defective lift switch 1.
  Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector of lift motor 1 and the connector YC8 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of lift motor 1. Replace lift motor 1.
  Defective lift motor 1. Check for continuity across the coil. If none, replace lift motor 1.
  Poor contact in the connector terminals. Check the connection of connector of lift switch 1 and the connector YC8 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective lift switch 1. Check if YC8-B9 on the engine PWB goes low when lift switch 1 is turned off. If not, replace lift switch 1.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C1020
• Description: Lift motor 2 error
  After cassette 2 is inserted, lift switch 2 does not turn on within 12 s. This error is detected four times successively.
• Causes: Poor contact in the connector terminals.
  Broken gears or couplings of lift motor 2.
  Defective lift motor 2.
  Poor contact in the connector terminals.
  Defective lift switch 2.
  Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector of lift motor 2 and the connector YC8 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of lift motor 2. Replace lift motor 2.
  Defective lift motor 2. Check for continuity across the coil. If none, replace lift motor 2.
  Poor contact in the connector terminals. Check the connection of connector of lift switch 2 and the connector YC8 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective lift switch 2. Check if YC8-B15 on the engine PWB goes low when lift switch 2 is turned off. If not, replace lift switch 2.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C1030
• Description: PF lift motor 1 error (optional paper feeder)
  After cassette 3 is inserted, PF lift switch 1 does not turn on within 12 s. This error is detected four times successively.
• Causes: Poor contact in the connector terminals.
  Broken gears or couplings of PF lift motor 1.
  Defective PF lift motor 1.
  Defective PF lift switch 1.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 on the engine PWB and the connector on the PF main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of PF lift motor 1. Replace PF lift motor 1.
  Defective PF lift motor 1. Check for continuity across the coil. If none, replace PF lift motor 1.
  Defective PF lift switch 1. Check if YC1-7 on the PF main PWB goes low when PF lift switch 1 is turned off. If not, replace PF lift switch 1.

• Code: C1040
• Description: PF lift motor 2 error (optional paper feeder)
  After cassette 4 is inserted, PF lift switch 2 does not turn on within 12 s. This error is detected four times successively.
• Causes: Poor contact in the connector terminals
  Broken gears or couplings of PF lift motor 2.
  Defective PF lift motor 2.
  Defective PF lift switch 2.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 on the engine PWB and the connector on the PF main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Broken gears or couplings of PF lift motor 2. Replace PF lift motor 2.
  Defective PF lift motor 2. Check for continuity across the coil. If none, replace PF lift motor 2.
  Defective PF lift switch 2. Check if YC1-9 on the PF main PWB goes low when PF lift switch 2 is turned off. If not, replace PF lift switch 2.

• Code: C1100
• Description: PF lift motor 1 error (optional 3000sheet paper feeder)
  A motor over-current signal is detected continuously for 1 s or longer.
• Causes: Poor contact in the connector terminals.
  PF lift motor 1 does not rotate correctly (the motor is overloaded).
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 on the engine PWB and the connector on the PF main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  PF lift motor 1 does not rotate correctly (the motor is overloaded). Check the gears and remedy if necessary.

• Code: C1110
• Description: PF lift motor 2 error (optional 3000sheet paper feeder)
  A motor over-current signal is detected continuously for 1 s or longer.
• Causes: Poor contact in the connector terminals.
  PF lift motor 2 does not rotate correctly (the motor is overloaded).
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 on the engine PWB and the connector on the PF main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  PF lift motor 2 does not rotate correctly (the motor is overloaded). Check the gears and remedy if necessary.