• 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.

• Code: C230
• Description: Paper feed motor problem • PFM LOCK signal remains high for 1 s, 1 s after the paper feed motor has turned on.
• Causes: Poor contact of the connector terminals. Defective paper feed 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 feed 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: C231
• Description: Desk drive motor problem 3 • DDM LOCK signal remains high for 1 s, 2 s after the desk drive motor has turned on.
• Causes: Poor contact of the desk drive motor connector terminals. Defective desk drive motor rotation control circuit.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the desk drive motor. Check if rollers and gears rotate smoothly. If not grease the bushings and gears. Check for broken gears and replace if any.

• Code: C241
• Description: Upper lift motor problem • When the drawer is inserted, the upper lift limit switch does not turn on within 4 to 5 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, remedy or replace the cable. Check if CN15-3 on the engine PCB goes low when the upper lift limit switch is turned on. If not, replace the upper lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.

• Code: C242
• Description: Lower lift motor problem • When the drawer is inserted, the lower lift limit switch does not turn on within 4 to 5 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.
• 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, remedy or replace the cable. Check if CN15-4 on the engine PCB goes low when the lower lift limit switch is turned on. If not, replace the upper lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.

• Code: C243
• Description: Upper desk lift motor problem 3 • When the drawer is inserted, the upper desk lift limit switch does not turn on within 4 to 5 s of the upper desk lift motor turning on. • During copying, the upper desk lift limit switch does not turn on within 200 ms of the upper desk lift motor turning on.
• Causes: Broken gears or couplings of the upper desk lift motor. Defective upper desk lift motor. Poor contact of the upper desk lift motor connector terminals. Defective upper desk lift limit switch. Poor contact of the upper desk lift limit switch connector terminals
• Remedy: Replace the upper desk lift motor. Check for continuity across the coil. If none, replace the upper desk lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Check if CN3-11 on the desk main PCB goes low when the upper desk lift limit switch is turned on. If not, replace the upper desk lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.

• Code: C244
• Description: Lower desk lift motor problem 3 • When the drawer is inserted, the lower desk lift limit switch does not turn on within 4 to 5 s of the lower desk lift motor turning on. • During copying, the lower desk lift limit switch does not turn on within 200 ms of the lower desk lift motor turning on.
• Causes: Broken gears or couplings of the lower desk lift motor. Defective lower desk lift motor. Poor contact of the lower desk lift motor connector terminals. Defective lower desk lift limit switch. Poor contact of the lower desk lift limit switch connector terminals.
• Remedy: Replace the lower desk lift motor. Check for continuity across the coil. If none, replace the lower desk lift motor. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Check if CN3-12 on the desk main PCB goes low when the lower desk lift limit switch is turned on. If not, replace the upper desk lift limit switch. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.