• Code: C1120
• Description: PF left lift position problem (optional 3000-sheet paper feeder)
  Level switch 1 does not turn on within 30 s of PF lift motor 1 turning on.
• Causes: Poor contact in the connector terminals.
  Defective level switch 1.
  Defective PF lift motor 1.
  The PF left lift does not rise properly.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 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 level switch 1. Check if YC5-4 on the PF main PWB goes low when level switch 1 is turned off. If not, replace level switch 1.
  Defective PF lift motor 1. Check for continuity across the coil. If none, replace PF lift motor 1.
  The PF left lift does not rise properly. Check the gears and belts, and remedy if necessary.

• Code: C1130
• Description: PF right lift position problem (optional 3000-sheet paper feeder)
  Level switch 2 does not turn on within 30 s of PF lift motor 2 turning on.
• Causes: Poor contact in the connector terminals.
  Defective level switch 2.
  Defective PF lift motor 2.
  The PF right lift does not rise properly.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 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 level switch 2. Check if YC5-7 on the PF main PWB goes low when level switch 2 is turned off. If not, replace level switch 2.
  Defective PF lift motor 2. Check for continuity across the coil. If none, replace PF lift motor 2.
  The PF right lift does not rise properly. Check the gears and belts, and remedy if necessary.

• Code: C1800
• Description: Paper feeder communication error (optional paper feeder)
  A communication error from paper feeder is detected 10 times in succession.
• Causes: Poor contact in the connector terminals.
  Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 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 PWB. Replace the PF main PWB or engine PWB and check for correct operation.

• Code: C1900
• Description: Paper feeder EEPROM error (optional paper feeder)
  When writing the data, the write data and the read data is not continuously in agreement three times.
• Causes: Poor contact in the connector terminals.
  Defective engine PWB.
  Defective paper feeder.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 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 engine PWB. Replace the engine PWB and check for correct operation.
  Defective paper feeder. Replace the paper feeder with another unit and check the operation. If the operation is normal, replace or repair optional paper feeder.

• Code: C2000
• Description: Drive motor problem
  Stable OFF is detected for 1 s continuously after drive motor stability. The drive motor is not stabilized in 6 s since the motor is activated.
• Causes: Poor contact in the connector terminals.
  Defective drive transmission system.
  Defective drive motor.
  Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC11 on the engine PWB and the connector on the drive 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 drive motor. Replace the drive motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C2250
• Description: Main charger cleaning motor error
  A locking error has been detected three times in a row during a reciprocating cleaning motion.
• Causes: Poor contact in the connector terminals.
  Defective drive transmission system.
  Defective main charger cleaning motor.
  Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the engine PWB and the connector on the main charger cleaning 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 main charger cleaning motor. Replace the main charger cleaning motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C2500
• Description: Paper feed motor error
  Stable OFF is detected for 1 s continuously after paper feed motor stability. The paper feed motor is not stabilized in 6 s since the motor is activated.
• Causes: Poor contact in the connector terminals.
  Defective drive transmission system.
  Defective paper feed motor.
  Defective engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC11 on the engine PWB and the connector on the paper feed 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 feed motor. Replace the paper feed motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: C2600
• Description: PF paper conveying/drive motor error (optional 3000-sheet paper feeder/ 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 PF paper conveying/drive motor.
  Defective PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC15 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 PF paper conveying/drive motor. Replace the PF paper conveying/drive motor.
  Defective PWB. Replace the PF main PWB or engine PWB and check for correct operation.