• Code: 2620
• Description: PF paper feed motor error (Paper feeder) The PF paper feed motor of cassette 3 ready input is not given for 2 s during the PF paper feed motor is ON.
• Remedy: Defective harness between PF paper feed motor and PF main PWB (YC4), 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.
  Defective PF main motor. Replace the PF main motor (Refer to the service manual for the paper feeder).
  Defective control PWB. Replace the control PWB.

• Code: 3100
• Description: ISU home position error
• Remedy: Defective FFC between CCD PWB (YC1) and control PWB (YC8). Replace the image scanner unit (ISU).
  Defective FFC between control PWB (YC6) and scanner PWB (YC103), or improper FFC insertion. Reinsert the FFC. Also check for continuity within the FFC. If none, remedy or replace the FFC.
  Defective home position sensor. Replace the home position sensor.
  Defective harness between ISU motor and scanner PWB (YC104), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective ISU motor. Replace the ISU motor.

• Code: 3200
• Description: Exposure lamp error The exposure lamp is not turned on.
• Remedy: Defective FFC between scanner PWB (YC103) and control PWB (YC6), or improper FFC insertion. Reinsert the FFC. Also check for continuity within the FFC. If none, remedy or replace the FFC.
  Defective FFC between CCD PWB (YC1) and control PWB (YC8). Replace the image scanner unit (ISU).
  Defective harness between CCD PWB (YC3) and LED drive PWB (YC1), 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 LED drive PWB (YC2) and exposure lamp, or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective exposure lamp. Replace the exposure lamp.
  Defective LED drive PWB. Replace the LED drive PWB.
  Defective control PWB. Replace the control PWB.

• Code: 3300
• Description: AGC error After AGC, correct input is not obtained at CCD.
• Remedy: Defective FFC between CCD PWB (YC1) and control PWB (YC8). Replace the image scanner unit (ISU).
  Defective exposure lamp. Replace the exposure lamp.
  Defective CCD PWB. Replace the CCD PWB.
  Defective control PWB. Replace the control PWB.

• Code: 3500
• Description: CPU - ASIC (CCD PWB) communication error An error code is detected.
• Remedy: Defective FFC between CCD PWB (YC1) and control PWB (YC8). Replace the image scanner unit (ISU).
  Defective CCD PWB. Replace the CCD PWB.
  Defective control PWB. Replace the control PWB.

• Code: 4000
• Description: Polygon motor (laser scanner unit) error The polygon motor ready input is not given for 6 s during the polygon motor is ON.
• Remedy: Defective harness between polygon motor and control PWB (YC10), 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 control PWB. Replace the control PWB.

• Code: 4200
• Description: BD error (laser scanner unit) error
• Remedy: BD sensor does not detect laser beam due to condensation on the polygon mirror. Turn machine power off for at least 30 minutes, then turn machine on again. If not cured, replace the laser scanner unit.
  Defective laser scanner unit. Replace the laser scanner unit.
  Defective control PWB. Replace the control PWB.

• Code: 6000
• Description: Broken Fuser heater wire The fuser temperature does not rise after the Fuser heater has been turned on.
• Remedy: Poor contact in the fuser thermistor connector terminals. Reinsert the connector.
  Poor contact in the Fuser heater connector terminals. Reinsert the connector.
  Fuser thermistor installed incorrectly. Replace the fuser unit.
  Fuser thermal cutout triggered. Replace the fuser unit.
  Fuser heater installed incorrectly. Replace the fuser unit.
  Broken Fuser heater wire. Replace the fuser unit.