Description: Communication problem between the main PWB and engine board PWB When the power is turned on, the machine does not detect the low level of SBSY and the high level of SDIR for 10 seconds.
Causes: Poor contact in the connector terminals. Defective main PWB or engine PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connectors YC6 on the main PWB and YC1 on the engine PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective main PWB or engine PWB. Replace the main PWB or engine PWB and check for correct operation.
Code: C0240
Description: Optional printer board PWB communication problem The printer board PWB does not respond 120 s after the power is turned on.
Causes: Poor contact in the connector terminals. Defective main PWB or printer board PWB.
Remedy: Poor contact in the connector terminals. Check the connection of connector. Repair or replace if necessary. Defective main PWB or printer board PWB. Replace the main PWB or printer board PWB and check for correct operation.
Code: C0410
Description: Optional DP communication problem Communication fails five times successively.
Causes: DP installed incorrectly. Defective main PWB or DP driver PWB.
Remedy: DP installed incorrectly. Check the installation state of the DP and adjust it if it is not properly installed. Defective main PWB or DP driver PWB. Replace the main PWB or DP driver PWB and check for correct operation.
Code: C0420
Description: Optional first paper feeder communication problem Communication fails five times successively.
Causes: Paper feeder installed incorrectly. Defective main PWB or drawer main PWB.
Remedy: Paper feeder installed incorrectly. Check the installation state of the paper feeder and adjust it if it is not properly installed. Defective main PWB or drawer main PWB. Replace the main PWB or drawer main PWB and check for correct operation.
Code: C0500
Description: Optional second paper feeder communication problem Communication fails five times successively.
Causes: Paper feeder installed incorrectly. Defective main PWB or drawer main PWB.
Remedy: Paper feeder installed incorrectly. Check the installation state of the paper feeder and adjust it if it is not properly installed. Defective main PWB or drawer main PWB. Replace the main PWB or drawer main PWB and check for correct operation.
Code: C0510
Description: Optional third paper feeder communication problem Communication fails five times successively.
Causes: Paper feeder installed incorrectly. Defective main PWB or drawer main PWB.
Remedy: Paper feeder installed incorrectly. Check the installation state of the paper feeder and adjust it if it is not properly installed. Defective main PWB or drawer main PWB. Replace the main PWB or drawer main PWB and check for correct operation.