• Code: 0830
• Description: FAX PWB flash program area checksum error
  A checksum error occurred with the program of the FAX PWB.
• Causes: Defective fax software. Defective FAX PWB.
• Remedy: Defective fax software. Install the fax software.
  Defective FAX PWB. Replace the FAX PWB.

• Code: 0840
• Description: Faults of RTC
  The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
• Causes: Defective control PWB. The battery is disconnected from the control PWB.
• Remedy: Defective control PWB. Replace the control PWB.
  The battery is disconnected from the control PWB. Check visually and remedy if necessary.

• Code: 0870
• Description: FAX PWB to control PWB high capacity data transfer problem
  High-capacity data transfer between the FAX PWB and the control PWB of the machine was not normally performed even if the data transfer was retried the specified times.
• Causes: Improper installation FAX PWB. Defective FAX PWB or control PWB.
• Remedy: Improper installation FAX PWB. Reinstall the FAX PWB.
  Defective FAX PWB or control PWB. Replace the FAX PWB or control PWB and check for correct operation..

• Code: 0920
• Description: Fax file system error
  The backup data is not retained for file system abnormality of flash memory of the FAX PWB.
• Causes: Defective FAX PWB. Defective PF paper feed motor drive transmission system. Defective PF main motor. Defective control PWB.
• Remedy: Defective FAX PWB. Replace the FAX 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 (YC17), or improper connector insertion. Defective drive transmission system of the main motor. Defective main motor. Defective control PWB.
• Remedy: Defective harness between main motor (CN1) and control PWB (YC17), 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: 3100
• Description: ISU home position error
• Causes: Defective FFC between CCD PWB (YC1) and control PWB (YC8). Defective FFC between control PWB (YC6) and scanner PWB (YC103), or improper FFC insertion. Defective home position sensor. Defective harness between ISU motor and scanner PWB (YC104), or improper connector insertion. Defective ISU motor.
• 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.
• Causes: Defective FFC between scanner PWB (YC103) and control PWB (YC6), or improper FFC insertion. Defective FFC between CCD PWB (YC1) and control PWB (YC8). Defective harness between CCD PWB (YC3) and inverter PWB (YC101), or improper connector insertion. Defective harness between inverter PWB (YC102) and exposure lamp, or improper connector insertion. Defective exposure lamp. Defective inverter PWB. Defective control PWB.
• 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 inverter PWB (YC101), 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 inverter PWB (YC102) 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 inverter PWB. Replace the inverter PWB.
  Defective control PWB. Replace the control PWB.

• Code: 3300
• Description: AGC error
  After AGC, correct input is not obtained at CCD.
• Causes: Defective FFC between CCD PWB (YC1) and control PWB (YC8). Defective exposure lamp. Defective CCD PWB. Defective control PWB.
• 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.