Kyocera KM3530

• 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.

• Code: C0450
• Description: Mailbox 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 mailbox main PCB.
• Remedy: Check the connection of connectors CN3 on the main PCB and CN1 on the mailbox 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 mailbox main PCB and check for correct operation.

• Code: C0470
• Description: Switchback unit 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 switchback unit main PCB.
• Remedy: Check the connection of connectors CN3 on the 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 switchback unit main PCB and check for correct operation.

• Code: C0600
• Description: DIMM problem The DIMM on the memory PCB does not operate correctly.
• Causes: DIMM installed incorrectly. Defective DIMM.
• Remedy: Check if the DIMM is inserted into the socket on the main PCB correctly. Replace the DIMM and check for correct operation.

• Code: C0610
• Description: Bitmap problem • There is a problem with the data or address bus of the bitmap DRAM.
• Causes: Defective main PCB.
• Remedy: Replace the main PCB and check for correct operation.