• Code: C0280
• Description: Communication problem between the fax control PWB and main PWB
  • Communication between the fax control PWB and the main PWB of the machine cannot be performed normally.
• Causes: Poor contact in the connector terminals. Defective main PWB or fax control PWB.
• Remedy: Check the connection of connector YC1 on the fax control PWB and the connector YC1 on the main PWB. Repair or replace if necessary. Replace the main PWB or fax control PWB and check for correct operation.

• Code: C0800
• Description: Image processing problem
  • JAM05 is detected twice.
• Causes: Defective engine PWB.
• Remedy: Replace the engine PWB and check for correct operation.

• Code: C0830
• Description: Flash ROM program area checksum error
  • A checksum error occurred with the program of the optional fax control PWB.
• Causes: Defective fax control
  PWB.
• Remedy: Replace the fax control PWB and check for correct operation.

• Code: C0870
• Description: Fax control PWB to main PWB highcapacity data transfer problem
  • High-capacity data transfer between the optional fax control PWB and the main PWB of the machine was not normally performed even if the data transfer was retried the specified times.
• Causes: Poor contact in the connector terminals. Defective fax control PWB or main PWB.
• Remedy: Check the connection of connector YC1 on the fax control PWB and YC1 on the main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the fax control PWB or main PWB and check for correct operation.

• Code: C0880
• Description: Fax control PWB program archive problem
  • When power is turned on, the compressed program in the Flash ROM on the optional fax control PWB was not successfully decompressed.
• Causes: Defective fax control PWB.
• Remedy: Replace the fax control 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 optional fax control PWB.
• Causes: Defective fax control PWB.
• Remedy: Replace the fax control PWB and check for correct operation.

• Code: C2000
• Description: Main motor problem
  • LOCK ALM signal remains high for 1 s, 1 s after the main motor has turned on.
• Causes: Poor contact in the main motor connector terminals. Defective main motor rotation control circuit. Defective drive transmission system.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the main motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.

• Code: C3100
• Description: Scanner carriage problem
  • The home position is not correct when the power is turned on or copying the document placed on the contact glass.
• Causes: Poor contact of the connector terminals. Defective scanner home position sensor. Defective engine PWB or scanner PWB. Defective scanner motor.
• Remedy: Check the connection of connectors YC10, 11 on the engine PWB and the continuity across the connector terminals. Repair or replace if necessary. Replace the scanner home position sensor. Replace the engine PWB or scanner PWB and check for correct operation. Replace the scanner motor.