• Code: 4202
• Description: Laser output error (Cyan) The pin photo signal (PDN) is not output from PD PWB C for one second while laser is emitted.
• Remedy: Defective harness between APC PWB C and engine PWB (YC30), 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 C. Replace the laser scanner unit MC.
  Defective PD PWB C. Replace the laser scanner unit MC.
  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.
• Remedy: Defective harness between APC PWB M and engine PWB (YC30), 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 MC.
  Defective PD PWB M. Replace the laser scanner unit MC.
  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.
• Remedy: Defective harness between APC PWB Y and engine PWB (YC29), 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 YK.
  Defective PD PWB Y. Replace the laser scanner unit YK.
  Defective engine PWB. Replace the engine PWB.

• Code: 4600
• Description: LSU cleaning motor error When the LSU cleaning motor is driven, the LSU cleaning motor over-current detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
• Remedy: Defective harness between LSU cleaning motor and engine PWB (YC37), 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 LSU cleaning 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 LSU cleaning motor. Replace the LSU cleaning motor.
  Defective engine PWB. Replace the engine PWB.

• Code: 4700
• Description: VIDEO ASIC device error
• Remedy: Faulty connection of the connector between the main PWB and engine PWB. Check the installation of the main PWB and engine PWB and reinstall them if necessary.
  Defective main PWB. Replace the main PWB.
  Defective engine PWB. Replace the engine PWB.

• Code: 5301
• Description: Broken eraser lamp K wire When the eraser lamp K is driven, the eraser lamp K over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
• Remedy: Defective harness between drum unit K and drum relay PWB (YC2/YC3), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective harness between drum relay PWB (YC1) and engine PWB (YC34), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective eraser lamp K. Replace the drum unit K..
  Defective engine PWB. Replace the engine PWB.

• Code: 5302
• Description: Broken eraser lamp C wire When the eraser lamp C is driven, the eraser lamp C over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
• Remedy: Defective harness between drum unit C and drum relay PWB (YC8/YC9), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective harness between drum relay PWB (YC1) and engine PWB (YC34), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective eraser lamp C. Replace the drum unit C.
  Defective engine PWB. Replace the engine PWB.

• Code: 5303
• Description: Broken eraser lamp M wire When the eraser lamp M is driven, the eraser lamp M over-current detection signal is detected continuously for 10 times (1 s) at 100 ms intervals.
• Remedy: Defective harness between drum unit M and drum relay PWB (YC11/ YC12), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective harness between drum relay PWB (YC1) and engine PWB (YC34), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective eraser lamp M. Replace the drum unit M.
  Defective engine PWB. Replace the engine PWB.