• Code: C2300
• Description: Fuser motor error
  • LOCK signal remains high for 1 s, 1 s after the fuser motor has turned on.
• Causes: Poor contact in the fuser motor connector terminals.
  Defective fuser motor rotation control circuit.
  Defective drive transmission system.
  Defective duplex PWB or engine PWB.
• Remedy: Poor contact in the fuser motor connector terminals. Check the connection of connector YC2 and YC4 on the duplex PWB. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective fuser motor rotation control circuit. Replace the fuser motor.
  Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Defective duplex PWB or engine PWB. Replace the duplex PWB or the engine PWB.

• Code: C2550
• Description: Transfer motor error
  • LOCK signal remains high for 1 s, 1 s after the transfer motor has turned on.
• Causes: Poor contact in the transfer motor connector terminals.
  Defective transfer motor rotation control circuit.
  Defective drive transmission system.
  Defective cassette PWB or engine PWB.
• Remedy: Poor contact in the transfer motor connector terminals. Check the connection of connector YC2 and YC3 on the cassette PWB and YC4 on the engine PWB. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective transfer motor rotation control circuit. Replace the transfer motor.
  Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Defective cassette PWB or engine PWB. Replace the cassette PWB or the engine PWB.

• Code: C2640
• Description: Side feeder drive motor error
• Causes: Overloaded side feeder drive motor
  Defective side feeder drive motor.
  Defective side feeder main PWB.
• Remedy: Overloaded side feeder drive motor Verify that the side feeder motor or the paper feeding mechanism is not interrupted by any objects.
  Defective side feeder drive motor. Replace the side feeder drive motor.
  Defective side feeder main PWB. Replace the side feeder main PWB.

• Code: C2720
• Description: PTC cleaning motor error
  • LOCK signal remains high for 1 s, 200 ms after the PTC cleaning motor has turned on.
• Causes: Poor contact in the drive motor connector terminals.
  Defective PTC cleaning motor rotation control circuit.
  Defective drive transmission system.
  Defective engine PWB.
• Remedy: Poor contact in the drive motor connector terminals. Check the connection of connector YC5 on the engine PWB. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.
  Defective PTC cleaning motor rotation control circuit. Replace the PTC cleaning motor.
  Defective drive transmission system. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Defective engine PWB. Replace the engine PWB.

• Code: C3100
• Description: Scanner carriage problem
  • The home position is not correct when the power is turned on or at the start of copying using the MP tray.
• Causes: Defective scanner PWB.
  Defective scanner home position switch.
  Defective scanner motor.
  Poor contact in the connector terminals.
  Defective mirror flame, exposure lamp or scanner wire.
• Remedy: Defective scanner PWB. Replace the scanner PWB and check for correct operation.
  Defective scanner home position switch. Replace the scanner home position switch.
  Defective scanner motor. Replace the scanner motor.
  Poor contact in the connector terminals. Check the connection of connector YC2, YC5 and YC10 on the scanner PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective mirror flame, exposure lamp or scanner wire. Check if the mirror flames and exposure lamp are on the rail. And check the scanner wire winds correctly.

• Code: C3200
• Description: Exposure lamp problem
  • Check the CCD input value for the lighting status of the exposure lamp 500 ms after the exposure lamp is lit and the carriage is moved to the shading position. If the exposure lamp does not light, a further 100 ms later, check the CCD input. The exposure lamp does not light after 50 retries.
• Causes: Defective scanner PWB.
  Defective exposure lamp or inverter PWB.
  Incorrect shading position.
  Poor contact of the connector terminals.
  Defective CCD PWB.
• Remedy: Defective scanner PWB. Replace the scanner PWB and check for correct operation.
  Defective exposure lamp or inverter PWB. Replace the exposure lamp or inverter PWB.
  Incorrect shading position. Adjust the position of the contact glass (shading plate). If the problem still occurs, replace the scanner home position switch.
  Poor contact of the connector terminals. Check the connection of connectors YC3, YC4 and YC5 on the scanner PWB, YC5, YC6 and YC8 on the SHD PWB and YC1, YC2 and YC3 on the CCD PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective CCD PWB. Replace the CCD PWB and check for correct operation.

• Code: C3210
• Description: CIS lamp problem
  • After the reading starting, when input value at the time of CIS illumination does not exceed the threshold value between 5 s.
• Causes: Defective DP main PWB.
  Poor contact in the connector terminals.
  Defective CIS.
  Defective DP inverter PWB.
• Remedy: Defective DP main PWB. Replace the DP main PWB and check for correct operation.
  Poor contact in the connector terminals. Check the connection of connector YC2 on the DP main PWB and the continuity across the connector terminals. Repair or replace if necessary.
  Defective CIS. Replace CIS and check for correct operation.
  Defective DP inverter PWB. Replace the DP inverter PWB and check for correct operation.

• Code: C3300
• Description: Optical system (AGC) problem
  • After AGC, correct input is not obtained at CCD.
• Causes: Insufficient exposure lamp luminosity.
  Defective scanner PWB.
  Incorrect shading position.
  CCD PWB output problem.
  Poor contact of the connector terminals.
• Remedy: Insufficient exposure lamp luminosity. Replace the exposure lamp or inverter PWB.
  Defective scanner PWB. Replace the scanner PWB and check for correct operation.
  Incorrect shading position. Adjust the position of the contact glass (shading plate). If the problem still occurs, replace the scanner home position sensor.
  CCD PWB output problem. Replace the ISU.
  Poor contact of the connector terminals. Check the connection of connectors YC5, YC6 and YC8 on the SHD PWB and YC1, YC2 and YC3 on the CCD PWB, and the continuity across the connector terminals. Repair or replace if necessary.