• Code: 0100
• Description: Backup memory device error
• Causes: Defective flash memory (U10). Defective control PWB.
• Remedy: Defective flash memory (U10). Replace the control PWB.
  Defective control PWB. Replace the control PWB.

• Code: 0110
• Description: Backup memory data error
• Causes: Defective flash memory (U10). Defective control PWB.
• Remedy: Defective flash memory (U10). Replace the control PWB.
  Defective control PWB. Replace the control PWB.

• Code: 0120
• Description: MAC address data error
• Causes: Defective flash memory (U10).
• Remedy: Replace the control PWB.

• Code: 0150
• Description: Control PWB EEPROM error
  Detecting control PWB EEPROM (U300) communication error.
• Causes: Improper installation control PWB EEPROM (U300). Defective control PWB.
• Remedy: Improper installation control PWB EEPROM (U300). Check the installation of the EEPROM (U300) and remedy if necessary.
  Defective control PWB. Replace the control PWB.

• Code: 0170
• Description: Billing counting error
• Causes: Defective control PWB.
• Remedy: Replace the control PWB.

• Code: 0420
• Description: Paper feeder communication error
  Communication error between control PWB and optional paper feeder.
• Causes: Improper installation paper feeder. Defective harness between control PWB (YC318) and paper feeder interface connector, or improper connector insertion. Defective control PWB. Defective harness between PF main PWB (YC5) and paper feeder interface connector, or improper connector insertion. Defective PF main- PWB.
• Remedy: Improper installation paper feeder. Follow installation instruction carefully again.
  Defective harness between control PWB (YC318) and paper feeder interface connector, or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective control PWB. Replace the control PWB.
  Defective harness between PF main PWB (YC5) and paper feeder interface connector, or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective PF main- PWB. Replace the PF main PWB.

• Code: 2000
• Description: Main motor error
  The main motor ready input is not given for 2 s during the main motor is ON.
• Causes: Defective harness between main motor (CN1) and control PWB (YC305), or improper connector insertion. Defective drive transmission system of the main motor. Defective main motor. Defective main motor.
• Remedy: Defective harness between main motor (CN1) and control PWB (YC305), 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 main 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 main motor. Replace the main motor.
  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.
• Causes: Defective harness between polygon motor and control PWB (YC319), or improper connector insertion. Defective laser scanner unit. Defective control PWB.
• Remedy: Defective harness between polygon motor and control PWB (YC319), 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.