• Code: C0250
• Description: Network scanner board communication problem • There is no reply after 20 retries at communication.
• Causes: Poor contact in the connector terminals. Defective scanner main PWB or network scanner board.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC14 on the scanner main PWB and the connector on the network scanner board. Repair or replace if necessary. Defective scanner main PWB or network scanner board. Replace the scanner main PWB or network scanner board and check for correct operation.

• Code: C0280
• Description: Abnormal communication between scanner MIP PWB and fax control PWB • After scanner MIP PWB status change signal turns on 1 minute, when it does not receive key required command from the fax control PWB, one time it resets the FAX. After that, while scanner MIP PWB status change signal turns on furthermore 1 minute, when it does not receive key required command from the fax control PWB. • When FAX_READY signal continues “fake” for 6 s, one time it resets the FAX. After that, when FAX_READY “fake” continues “fake” for 6 s.
• Causes: Poor contact in the connector terminals. Defective scanner MIP PWB or fax control PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the scanner MIP PWB and the connector CN1 on the fax control PWB. Repair or replace if necessary. Defective scanner MIP PWB or fax control PWB. Replace the scanner MIP PWB or fax control PWB and check for correct operation.

• Code: C0310
• Description: LPH drive PWB communication error • When an error in communication with the CPU for LPH control on the LPH drive PWB is detected, transmission/ reception is not normally completed even after 10 times of retry.
• Causes: Poor contact in the connector terminals. Defective LPH drive PWB. Defective engine controller PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC31 on the engine controller PWB and the connector YC2 on the LPH drive PWB. Repair or replace if necessary. Defective LPH drive PWB. Replace the LPH drive PWB. Defective engine controller PWB. Replace the engine controller PWB.

• Code: C0420
• Description: Paper feeder communication error 1 (upper of optional 500-sheet paper feeder) • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional upper paper feeder.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB and the connector YC2 on the paper feeder main PWB. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional upper paper feeder. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair the upper of the optional paper feeder.

• Code: C0440
• Description: Document finisher communication problem (optional document finisher) • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional document finisher.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC26 on the engine controller PWB and the connector on the finisher main PWB. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional document finisher. Replace the document finisher with another unit and check the operation. If the operation is normal, replace or repair the optional document finisher.

• Code: C0500
• Description: Paper feeder communication error 1 (lower of optional 500 sheets paper feeder) • Reception is not normally completed even after 40 times of retry at startup or 5 times of retry in normal operation.
• Causes: Poor contact in the connector terminals. Defective engine controller PWB. Defective optional lower paper feeder.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine controller PWB and the connector YC9 on the paper feeder main PWB of upper paper feeder. Repair or replace if necessary. Defective engine controller PWB. Replace the engine controller PWB. Defective optional lower paper feeder. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair the lower of the optional paper feeder.

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

• Code: C0610
• Description: Bitmap problem • The DIMM on the scanner main PWB does not operate correctly.
• Causes: Defective scanner main PWB.
• Remedy: Defective scanner main PWB. Replace the scanner main PWB and check for correct operation.