Description: Accounting count error • A checksum error in backup data of the accounting counter is detected.
Causes: Data damage of EEPROM.
Remedy: Contact the Service Administrative Division.
Code: C0210
Description: MMI communication problem • There is no reply after 20 retries at communication.
Causes: Defective main PCB.
Remedy: Replace the main 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 YC43 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 YC46 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 control PCB communication problem • There is no reply after 20 retries at communication.
Causes: Poor contact in the connector terminals. Defective main PCB or fax control PCB.
Remedy: Check the connection of connector YC44 on the main PCB and the connector on the memory PCB. Repair or replace if necessary. Replace the main PCB or fax control PCB and check for correct operation.
Code: C0320
Description: Energy save 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: Defective main PCB.
Remedy: Replace the main PCB and check for correct operation.