• Code: C1110
• Description: Paper feeder lift motor 2 error (optional 3000-sheet paper feeder) A motor over-current signal is detected continuously for 1 s or longer.
• Causes: Poor contact in the connector terminals. Paper feeder lift motor 2 does not rotate correctly (the motor is overloaded).
• Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the connector on the paper feeder main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Paper feeder lift motor 2 does not rotate correctly (the motor is overloaded). Check the gears and remedy if necessary.

• Code: C1120
• Description: Paper feeder left lift position problem (optional 3000-sheet paper feeder) Paper feeder switch 2 does not turn on within 30 s of paper feeder lift motor 1 turning on.
• Causes: Poor contact in the connector terminals. Defective paper feeder lift switch 2. Defective paper feeder lift motor 1. The paper feeder left lift does not rise properly.
• Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the connector on the paper feeder main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective paper feeder lift switch 2. Check if YC5-7 on the paper feeder main PWB goes low when paper feeder lift switch 2 is turned off. If not, replace paper feeder lift switch 2. Defective paper feeder lift motor 1. Check for continuity across the coil. If none, replace paper feeder lift motor 1. The paper feeder left lift does not rise properly. Check the gears and belts, and remedy if necessary.

• Code: C1130
• Description: Paper feeder right lift position problem (optional 3000-sheet paper feeder) Paper feeder switch 1 does not turn on within 30 s of paper feeder lift motor 2 turning on.
• Causes: Poor contact in the connector terminals. Defective paper feeder lift switch 1. Defective paper feeder lift motor 2. The paper feeder right lift does not rise properly.
• Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the connector on the paper feeder main PWB, and the continuity across the connector terminals. Repair or replace if necessary. Defective paper feeder lift switch 1. Check if YC5-4 on the paper feeder main PWB goes low when paper feeder lift switch 1 is turned off. If not, replace paper feeder lift switch 1. Defective paper feeder lift motor 2. Check for continuity across the coil. If none, replace paper feeder lift motor 2. The paper feeder right lift does not rise properly. Check the gears and belts, and remedy if necessary.

• Code: C1800
• Description: Paper feeder unit communication problem (optional paper feeder/3000sheet paper feeder) No communication: there is no reply after 5 retries. Abnormal communication: a communication error (parity or checksum error) is detected five times in succession.
• Causes: Poor contact in the connector terminals. Defective engine PWB. Defective paper feeder main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector on the engine PWB and the connector on the paper feeder 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 main PWB. Replace the paper feeder main 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 on the engine PWB and the connector on the paper feeder 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 engine PWB. Defective drive motor.
• 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 engine PWB. Replace the engine PWB and check for correct operation. Defective drive motor. Replace the drive motor.

• 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 engine PWB. Defective main charger cleaning motor.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC9 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 engine PWB. Replace the engine PWB and check for correct operation. Defective main charger cleaning motor. Replace the main charger cleaning motor.

• 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 engine PWB. Defective paper feed motor.
• 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 engine PWB. Replace the engine PWB and check for correct operation. Defective paper feed motor. Replace the paper feed motor.