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 engine PCB. Defective finisher main PCB.
Remedy: Check the connection of connectors CN18 on the engine PCB and CN2 on the finisher main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the engine PCB and check for correct operation. Replace the finisher main PCB and check for correct operation.
Code: C0610
Description: Bitmap (DIMM) problem • There is a problem with the data or address bus of the bitmap DRAM.
Causes: Defective main PCB. DIMM installed incorrectly. Defective DIMM.
Remedy: Replace the main PCB and check for correct operation. Check if the DIMM is inserted into the socket on the main PCB correctly. Replace the DIMM and check for correct operation.
Code: C0630
Description: DMA problem • DMA transmission of compressed, decompressed, rotated, relocated or blanked-out image data does not complete within the specified period of time.
Causes: Defective main PCB.
Remedy: Replace the main PCB and check for correct operation.
Code: C0640
Description: Hard disk drive problem • The hard disk drive cannot be accessed.
Causes: Poor contact of the hard disk drive connector terminals. Defective hard disk drive. Defective main PCB.
Remedy: Check the connection of connectors CN2 on the main PCB and hard disk drive, and the continuity across the connector terminals. Repair or replace if necessary. Run U906 (Resetting partial operation control) to cancel partial operation control. Run U024 (HDD formatting) without turning the power off to initialize the hard disk. Replace the hard disk drive and check for correct operation if the problem is still detected after initialization. Replace the main PCB and check for correct operation.
Code: C1030
Description: Upper lift motor problem • When the upper cassette is inserted, the upper lift limit switch does not turn on within 9 s of the upper lift motor turning on. • During copying, the upper lift limit switch does not turn on within 200 ms of the upper lift motor turning on.
Causes: Broken gears or couplings of the upper lift motor. Defective upper lift motor. Poor contact of the upper lift motor connector terminals. Defective upper lift limit switch. Poor contact of the upper lift limit switch connector terminals.
Remedy: Replace the upper lift motor. Check for continuity across the coil. If none, replace the upper lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if CN 2-6 on the engine PCB goes low when the upper lift limit switch is turned off. If not, replace the upper lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.
Code: C1040
Description: Lower lift motor problem • When the lower cassette is inserted, the lower lift limit switch does not turn on within 9 s of the lower lift motor turning on. • During copying, the lower lift limit switch does not turn on within 200 ms of the lower lift motor turning on.
Causes: Broken gears or couplings of the lower lift motor. Defective lower lift motor. Poor contact of the lower lift motor connector terminals. Defective lower lift limit switch. Poor contact of the lower lift limit switch connector terminals.
Remedy: Replace the lower lift motor. Check for continuity across the coil. If none, replace the lower lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable. Check if CN2-14 on the engine PCB goes low when the lower lift limit switch is turned off. If not, replace the lower lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, repair or replace the cable.