Description: Communication problem between the main PWB and engine PWB • When the power is turned on, the machine does not detect the low level of SBSY and the high level of SDIR for three seconds.
Causes: Poor contact in the connector terminals. Defective main PWB or engine PWB.
Remedy: Check the connection of connectors YC7 on the main PWB and YC3 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PWB or engine PWB and check for correct operation.
Code: C0220
Description: Communication problem between the main PWB and operation PWB • There is no reply after 20 retries at communication.
Causes: Poor contact in the connector terminals. Defective main PWB or operation PWB.
Remedy: Check the connection of connectors YC13 on the main PWB and YC3 on the operation PWB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PWB or operation PWB and check for correct operation.
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.