• Code: 2600
• Description: PF drive motor error (paper feeder)
  When the PF drive motor is driven, error signal is detected continuously for 1 s.
• Causes: Defective connector cable or poor contact in the connector.
  Defective drive transmission system of the PF drive motor.
  Defective PF drive motor.
  Defective PF main 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. PF drive motor and PF main PWB (YC2)
  Defective drive transmission system of the PF drive motor. Check if the rollers and gears rotate smoothly. If not, grease the bushes and gears. Check for broken gears and replace if any.
  Defective PF drive motor. Replace the PF drive motor.
  Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).

• Code: 3100
• Description: ISU home position error
  The home position is not correct when the power is turned on or at the start of copying using the table.
• Causes: Defective connector cable or poor contact in the connector.
  Defective home position sensor.
  Defective ISU motor.
  Defective CCD 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. Home position sensor and engine PWB (YC13)
  Defective home position sensor. Replace the home position sensor.
  Defective ISU motor. Replace the ISU motor.
  Defective CCD PWB. Replace the image scanner unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 3200
• Description: Exposure lamp error
  When input value at the time of exposure lamp illumination does not exceed the threshold value between 5 s.
• Causes: Defective connector cable or poor contact in the connector.
  Defective exposure lamp.
  Defective CCD PWB.
  Defective main 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. LED PWB and main PWB (YC112) CCD PWB and main PWB (YC113)
  Defective CCD PWB. Defective exposure lamp. Replace the image scanner unit.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 3500
• Description: Communication error between scanner and ASIC
  An error code is detected 3 times in succession.
• Causes: Defective connector cable or poor contact in the connector.
  Defective CCD PWB.
  Defective main 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. CCD PWB and main PWB (YC113)
  Defective CCD PWB. Replace the image scanner unit.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 3600
• Description: Scanner sequence error
  
• Causes: Defective main PWB or engine PWB.
• Remedy: Replace the main PWB or the engine PWB and check for correct operation.

• Code: 4000
• Description: Polygon motor synchronization error
  The polygon motor is not stabilized within 10 s after driving starts.
• Causes: Defective connector cable or poor contact in the connector.
  Defective polygon 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. Laser scanner unit and engine PWB (YC11)
  Defective polygon motor. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 4010
• Description: Polygon motor steady-state error
  Stable OFF is detected for 1 s continuously after polygon motor stabilized.
• Causes: Defective connector cable or poor contact in the connector.
  Defective polygon 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. Laser scanner unit and engine PWB (YC11)
  Defective polygon motor. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB and check for correct operation.

• Code: 4100
• Description: BD initialization error
  BD is not detected within 1 s after polygon motor stabilized.
• Causes: Defective connector cable or poor contact in the connector.
  Defective APC PWB.
  Defective BD PWB.
  Defective main 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. BD PWB and APC PWB (YC1) APC PWB (YC2) and main PWB (YC103)
  Defective BD PWB. Defective APC PWB. Replace the laser scanner unit.
  Defective main PWB. Replace the main PWB and check for correct operation.