• Code: C2351
• Description: Cleaning motor K error
  After the motor drive ON signal is output and 2 s elapses, the rated speed reach signal is not input continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective cleaning motor K. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC16 on the engine PWB and the connector of the cleaning motor K, and the continuity across the connector terminals. Repair or replace if necessary.
  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 cleaning motor K. Run maintenance item U030 and check if the cleaning motor K operates when YC16- B13 (remote signal) on the engine PWB goes low. If not, replace the cleaning motor K.
  Defective engine PWB. Run maintenance item U030 and check if YC16-B13 (remote signal) on the engine PWB goes low. If not, replace the engine PWB.

• Code: C2352
• Description: Cleaning motor MCY error
  After the motor drive ON signal is output and 2 s elapses, the rated speed reach signal is not input continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective cleaning motor K. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC16 on the engine PWB and the connector of the cleaning motor MCY, and the continuity across the connector terminals. Repair or replace if necessary.
  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 cleaning motor K. Run maintenance item U030 and check if the cleaning motor MCY operates when YC16-A13 (remote signal) on the engine PWB goes low. If not, replace the cleaning motor MCY.
  Defective engine PWB. Run maintenance item U030 and check if YC16-A13 (remote signal) on the engine PWB goes low. If not, replace the engine PWB.

• Code: C2400
• Description: Eject motor error
  After the motor drive ON signal is output and 2 s elapses, the rated speed reach signal is not input continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective eject motor. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC25 on the engine PWB and the connector on the eject motor, and the continuity across the connector terminals. Repair or replace if necessary.
  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 eject motor. Run maintenance item U030 and check if the eject motor operates when YC25-A5 (remote signal) on the engine PWB goes low. If not, replace the eject motor.
  Defective engine PWB. Run maintenance item U030 and check if YC25-A5 (remote signal) on the engine PWB goes low. If not, replace the engine PWB.

• Code: C2500
• Description: MP motor error
  After the motor drive ON signal is output and 2 s elapses, the rated speed reach signal is not input continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective MP motor. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC24 on the engine PWB and the connector on the MP motor, and the continuity across the connector terminals. Repair or replace if necessary.
  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 MP motor. Run maintenance item U030 and check if the MP motor operates when YC24-2 (remote signal) on the engine PWB goes low. If not, replace the MP motor.
  Defective engine PWB. Run maintenance item U030 and check if YC24-3 (remote signal) on the engine PWB goes low. If not, replace the engine PWB.

• Code: C2550
• Description: Paper conveying motor error
  After the motor drive ON signal is output and 2 s elapses, the rated speed reach signal is not input continuously for 1 s.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective paper conveying motor. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC2 on the feed PWB and the connector on the paper conveying motor, and the continuity across the connector terminals. Repair or replace if necessary.
  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 paper conveying motor. Run maintenance item U030 and check if the motor operates. If not, replace the paper conveying motor.
  Defective PWB. Replace the feed PWB or engine PWB and check for correct operation.

• Code: C2600
• Description: PF paper conveying motor error (optional paper feeder)
  The lock signal of the motor is detected above 450 ms.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective paper PF paper conveying motor. Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the engine PWB and the connector on the PF main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  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 paper PF paper conveying motor. Replace the PF paper conveying motor.
  Defective PWB. Replace the PF main PWB or engine PWB and check for correct operation.

• Code: C2700
• Description: Color release motor error
  After driving of the color release motor starts, the error signal is not at the H level for 4 s continuously. After driving of the color release motor starts, the release signal does not turn to the L level within 5 s.
• Causes: Poor contact in the connector terminals. Defective color release motor. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC28 on the engine PWB and the connector of the color release motor, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective color release motor. Replace the color release motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation

• Code: C2810
• Description: Waste toner motor error
  After driving of the waste toner motor starts, the error signal is not at the H level for 2 s continuously.
• Causes: Poor contact in the connector terminals. Defective drive transmission system. Defective waste toner motor. Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC12 on the engine PWB and the connector of the waste toner motor, and the continuity across the connector terminals. Repair or replace if necessary.
  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 waste toner motor. Replace the waste toner motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.