• Code: 2810
• Description: Waste toner motor error
  Initialized when an error is constantly observed for 2 s after the waste toner motor is activated. An error is constantly observed for 2.5 s after rebooting. The lock detect signal won’t be H level three times in a row within 200 ms at 1.25 ms cycles after the waste toner motor has been driven.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of motor. Defective waste toner motor.Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Waste toner motor and front PWB (YC16) Front PWB (YC3) and engine PWB (YC7)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes 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.

• Code: 2820
• Description: Transfer motor steady-state error
  After transfer motor is stabilized, the ready signal is at the H level for 5 s continuously. The counter value obtained by timer capture is lower than 2200 for 10 times in a row.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of motor. Defective transfer motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Transfer motor and feed PWB 1 (YC13) Feed PWB 1 (YC2) and engine PWB (YC5)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective transfer motor. Replace the transfer motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2840
• Description: Transfer cleaning motor error
  After transfer cleaning motor is driven, the ready signal does not turn to L within 2 s. After transfer cleaning motor is stabilized, the ready signal is at the H level for 1 s continuously.
• Causes: Defective connector cable or poor contact in the connector. Defective drive transmission system of motor. Defective transfer cleaning motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Transfer cleaning motor and engine PWB (YC3)
  Defective drive transmission system of motor. Check if the gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective transfer cleaning motor. Replace the transfer cleaning motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2850
• Description: Transfer belt motor sensor error
  The signal is not received for 100 ms in succession.
• Causes: Defective connector cable or poor contact in the connector. Defective transfer motor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Transfer motor and feed PWB (YC13) Feed PWB (YC1) to engine PWB(YC6)
  Defective transfer motor. Replace the transfer motor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2860
• Description: Transfer belt sensor error
  The signal is not received for 100 ms in succession. PWB.
• Causes: Defective connector cable or poor contact in the connector. Defective transfer belt sensor. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Transfer belt sensor and engine PWB (YC3)
  Defective transfer belt sensor. Replace the transfer belt sensor.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 2950
• Description: Motor control PWB communication error
  A communication error from the motor control PWB is detected 10 times in succession.
• Causes: Defective connector cable or poor contact in the connector. Defective motor control PWB. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Motor control PWB (YC3) and engine PWB (YC9)
  Defective motor control PWB. Replace the motor control PWB and check for correct operation.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 4001
• Description: Polygon motor K synchronization error
  After polygon motor K is driven, the ready signal does not turn to L within 30 s. The polygon motor speed won’t stabilize within 10 s.
• Causes: Defective connector cable or poor contact in the connector. Defective polygon motor K. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Polygon motor K and LSU relay PWB (YC4) LSU relay PWB (YC4) and engine PWB (YC12)
  Defective polygon motor K. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 4002
• Description: Polygon motor C synchronization error
  After polygon motor C is driven, the ready signal does not turn to L within 30 s. The polygon motor speed won’t stabilize within 10 s.
• Causes: Defective connector cable or poor contact in the connector. Defective polygon motor C. Defective engine PWB.
• Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Polygon motor C and LSU relay PWB (YC9) LSU relay PWB (YC3) and engine PWB (YC12)
  Defective polygon motor C. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.