• Code: C0030
• Description: Fax board problem
  • Problems with data from fax board.
• Causes: Defective fax board.
• Remedy: Replace the fax board and check for correct operation.

• Code: C0110
• Description: Backup memory data problem
  • Data in the specified area of the backup memory does not match the specified values.
• Causes: Problem with the backup memory data. Defective backup RAM.
• Remedy: Turn safety switch 1 off and back on and run maintenance item U020 to set the contents of the backup memory data again. If the C011 is displayed after re-setting the backup memory contents, replace the backup RAM.

• Code: C0210
• Description: Operation unit PCB communication problem
  • There is no reply after 20 retries at communication.
• Causes: Poor contact in the connector terminals. Defective main PCB or operation unit PCB.
• Remedy: Check the connection of connectors CN36, CN42 on the main PCB and CN1, CN2 and CN3 on the operation unit PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PCB or operation unit PCB and check for correct operation.

• Code: C0240
• Description: Printer board communication problem
  • There is no reply after 20 retries at communication.
• Causes: Poor contact in the connector terminals. Defective main PCB or printer board.
• Remedy: Check the connection of connector CN43 on the main PCB and the connector on the printer board. Repair or replace if necessary. Replace the main PCB or printer board and check for correct operation.

• Code: C0250
• Description: Scanner network board communication problem
  • There is no reply after 20 retries at communication.
• Causes: Poor contact in the connector terminals. Defective main PCB or scanner network board.
• Remedy: Check the connection of connector CN46 on the main PCB and the connector on the memory PCB. Repair or replace if necessary. Replace the main PCB or scanner network board and check for correct operation.

• Code: C0280
• Description: Fax board communication problem
  • There is no reply after 20 retries at communication.
• Causes: Poor contact in the connector terminals. Defective main PCB or fax board.
• Remedy: Check the connection of connector CN44 on the main PCB and the connector on the memory PCB. Repair or replace if necessary. Replace the main PCB or fax board and check for correct operation.

• Code: C0420
• Description: Large paper deck /paper feed desk communication problem
  • Communication errors from the communication microcomputer on the main PCB. No communication: there is no reply after 5 retries. Abnormal communication: a communication error (parity or checksum error) is detected five times in succession.
• Causes: Poor contact in the connector terminals. Defective main PCB. Defective deck main PCB/desk main PCB.
• Remedy: Check the connection of connectors CN3 on the main PCB and the connector on the deck main PCB/desk main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PCB and check for correct operation. Replace the deck main PCB/desk main PCB and check for correct operation.

• Code: C0440
• Description: Finisher communication problem
  • Communication errors from the communication microcomputer on the main PCB. No communication: there is no reply after 5 retries. Abnormal communication: a communication error (parity or checksum error) is detected five times in succession.
• Causes: Poor contact in the connector terminals. Defective main PCB. Defective finisher main PCB.
• Remedy: Check the connection of connectors CN4, CN5 on the main PCB and CN2 on the finisher main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PCB and check for correct operation. Replace the finisher main PCB and check for correct operation.