• Code: C0840
• Description: Faults of RTC
  The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
• Causes: Defective main PWB.
  The battery is disconnected from the main PWB.
• Remedy: Defective main PWB. Replace the main PWB and check for correct operation.
  The battery is disconnected from the main PWB. Check visually and remedy if necessary.

• Code: C0860
• Description: Fax control PWB software switch checksum error (optional fax)
  A checksum error occurred with the software switch value of the fax control PWB.
• 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: 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 YC6 on the main 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: 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: Replace the fax control PWB and verify the operation.

• Code: C1010
• Description: Lift motor 1 error
  After cassette 1 is inserted, lift limit 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.
  Defective lift switch 1.
  Poor contact in the connector terminals.
  Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector of lift motor 1 and the connector YC3 on the feed 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.
  Defective lift switch 1. Check if YC4-2 on the feed PWB goes low when lift switch 1 is turned off. If not, replace lift switch 1.
  Poor contact in the connector terminals. Check the connection of connector of lift switch 1 and the connector YC4 on the feed PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective PWB. Replace the feed PWB or engine PWB and check for correct operation.

• Code: C1020
• Description: Lift motor 2 error
  After cassette 2 is inserted, lift limit 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.
  Defective lift switch 2.
  Poor contact in the connector terminals.
  Defective PWB
• Remedy: Poor contact in the connector terminals. Check the connection of connector of lift motor 2 and the connector YC3 on the feed 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.
  Defective lift switch 2. Check if YC4-8 on the feed PWB goes low when lift switch 2 is turned off. If not, replace lift switch 2.
  Poor contact in the connector terminals. Check the connection of connector of lift switch 2 and the connector YC4 on the feed PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective PWB. Replace the feed PWB or engine PWB and check for correct operation.