Description: Memory copy PCB 2 communication problem 1 • There is no reply after five retries at transmitting. • There is no reply after five retries at receiving.
Causes: Poor contact of the connector terminals.
Remedy: Check the connection of connector CN3 on the main PCB and the connector on memory copy PCB 2. Repair or replace if necessary.
Code: C037
Description: Communication microcomputer problem • A problem is detected with the communication microcomputer (IC56) on the main PCB.
Causes: Defective main PCB or memory copy PCB 2. Defective main PCB.
Remedy: Replace the main PCB or memory copy PCB 2 and check for correct operation. Replace the main PCB and check for correct operation.
Code: C104
Description: Optical system problem • After AGC, correct input is not obtained at CCD.
Remedy: Replace the exposure lamp or inverter PCB. Replace the mainPCB. Adjust the position of the contact glass (shading plate). If the problem still occurs, replace the scanner home position switch. Replace the ISU.
Code: C200
Description: Drive motor problem • DM LOCK signal remains high for 1 s, 1 s after the drive motor has turned on.
Causes: Poor contact of the drive motor connector terminals. Defective drive motor rotation control circuit. Defective drive transmission system.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the drive motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Code: C210
Description: Paper conveying motor problem • PCM LOCK signal remains high for 1 s, 1 s after the conveying motor has turned on.
Causes: Poor contact of the paper conveying motor connector terminals. Defective paper conveying motor rotation control circuit. Defective drive transmission system.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the paper conveying motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
Code: C220
Description: Side registration motor problem • A problem where the side registration home position switch does not turn off after the side registration motor has turned 30 steps or the switch does not turn on after the motor has turned 265 steps is detected twice in succession. (The first time, the copier indicates that the duplex unit is not inserted correctly, requesting the user to open and reinsert the duplex unit. After the second detection, the copier enters partial operation control.)
Causes: Defective side registration motor. Defective side registration home position switch. Poor contact of the connector terminals. Malfunction of the side registration guides.
Remedy: Check for continuity across the coil. If none, replace the side registration motor. Check if CN9-12 on the engine PCB goes high when the side registration home position switch is on and goes low when the switch is off. If not, replace the switch. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Check if the side registration guides operate smoothly. If not, repair.