• Code: 2500
• Description: Paper feed motor error The main motor ready input is not given for 5 seconds during the main motor is ON.
• Causes: Defective harness between paper feed motor and engine PWB (YC3), or improper connector insertion. Defective drive transmission system of the paper feed motor. Defective paper feed motor. Defective engine PWB.
• Remedy: Defective harness between paper feed motor and engine PWB (YC3), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective drive transmission system of the paper feed motor. 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.

• Code: 2610, 2620, 2630, 2640
• Description: PF paper feed motor error (Option paper feeder)
  The PF paper feed motor of paper feeder 1 ready input is not given for 2 seconds during the PF paper feed motor is ON. 2610: Paper feeder 1 2620: Paper feeder 2 2630: Paper feeder 3 2640: Paper feeder 4
• Causes: Defective harness between PF paper feed motor and PF main PWB (YC6), or improper connector insertion. Defective PF paper feed motor drive transmission system. Defective PF main motor. Defective PF main PWB. Defective printer’s engine PWB.
• Remedy: Defective harness between PF paper feed motor and PF main PWB (YC6), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness (Refer to the service manual for the paper feeder).
  Defective PF paper feed motor drive transmission system. Check if the gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any (Refer to the service manual for the paper feeder).
  Defective PF main motor. Replace the PF main motor.
  Defective PF main PWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
  Defective printer’s engine PWB. Replace the printer’s engine PWB (Refer to the service manual for the printer).

• Code: 2830
• Description: Developing motor K error
  The developing motor K ready input is not given for 5 seconds during the developing motor K is ON.
• Causes: Defective harness between developing motor K and engine PWB (YC26), or improper connector insertion. Defective drive transmission system of the developing motor K. Improper installation intermediate transfer unit. Defective developing motor K. Defective engine PWB.
• Remedy: Defective harness between developing motor K and engine PWB (YC26), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective drive transmission system of the developing motor K. Check if the gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Improper installation intermediate transfer unit. Check the installation of the intermediate transfer unit and reinstall them if necessary.
  Defective developing motor K. Replace the developing motor K.
  Defective engine PWB. Replace the engine PWB.

• Code: 4000
• Description: Polygon motor error
  The polygon motor ready input is not given for 10 seconds during the polygon motor is ON.
• Causes: Defective harness between polygon motor and engine PWB (YC604), or improper connector insertion. Defective laser scanner unit. Defective engine PWB.
• Remedy: Defective harness between polygon motor and engine PWB (YC604), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective laser scanner unit. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB.

• Code: 4201
• Description: Laser output error (Black)
  The pin photo signal (PDN) is not output from PD PWB Y for one second while laser is emitted
• Causes: Defective engine PWB.
• Remedy: Defective engine PWB. Replace the engine PWB.

• Code: 4202
• Description: Laser output error (Cyan)
  The pin photo signal (PDN) is not output from PD PWB M for one second while laser is emitted.
• Causes: Defective engine PWB.
• Remedy: Defective engine PWB. Replace the engine PWB.

• Code: 4203
• Description: Laser output error (Magenta)
  The pin photo signal (PDN) is not output from PD PWB M for one second while laser is emitted.
• Causes: Defective harness between APC PWB M and engine PWB (YC607), or improper connector insertion. Defective APC PWB M. Defective PD PWB M. Defective engine PWB.
• Remedy: Defective harness between APC PWB M and engine PWB (YC607), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective APC PWB M. Replace the laser scanner unit.
  Defective PD PWB M. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB.

• Code: 4204
• Description: Laser output error (Yellow)
  The pin photo signal (PDN) is not output from PD PWB Y for one second while laser is emitted.
• Causes: Defective harness between APC PWB Y and engine PWB (YC607), or improper connector insertion. Defective APC PWB Y. Defective PD PWB Y. Defective engine PWB
• Remedy: Defective harness between APC PWB Y and engine PWB (YC607), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective APC PWB Y. Replace the laser scanner unit.
  Defective PD PWB Y. Replace the laser scanner unit.
  Defective engine PWB. Replace the engine PWB.