• Code: C2000
• Description: Drive motor problem
  A stable state does not continue for 1 s from 1 s after the drive motor is activated.
• Causes: Poor contact in the connector terminals.
  Defective drive transmission system.
  Defective main/ engine PWB.
  Defective drive motor.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 on the main/engine PWB and the connector on the drive motor, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drive transmission system. 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/ engine PWB. Replace the main/engine PWB and check for correct operation.
  Defective drive motor. Replace the drive motor.

• Code: C2200
• Description: Drum motor problem
  A stable state does not continue for 1 s from 1 s after the drum motor is activated.
• Causes: Poor contact in the connector terminals
  Defective drive transmission system.
  Defective main/ engine PWB.
  Defective drum motor.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC6 on the main/engine PWB and the connector on the drum motor, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective drive transmission system. 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/ engine PWB. Replace the main/engine PWB and check for correct operation.
  Defective drum motor. Replace the drum motor.

• Code: C3100
• Description: Scanner carriage problem
  The home position is not correct when the power is turned on or at the start of copying using the table.
• Causes: Poor contact in the connector terminals.
  Defective home position switch
  Defective scanner motor
  The mirror frame, exposure lamp, or scanner wire is defective
  Defective main/ engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC5 on the main/engine PWB and the connector on the home position switch, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective home position switch. Replace the home position switch.
  Defective scanner motor. Replace the scanner motor.
  The mirror frame, exposure lamp, or scanner wire is defective. Check if the mirror flames and exposure lamp are on the rail. And check the scanner wire winds correctly.
  Defective main/ engine PWB. Replace the main/engine PWB and check for correct operation.

• Code: C3200
• Description: Exposure lamp problem
  Non-lighting of the exposure lamp is detected at the beginning of copying.
• Causes: Poor contact in the connector terminals.
  Defective exposure lamp.
  Incorrect shading position.
  Defective PWB
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC16 on the main/engine PWB and the connector on the inverter PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective exposure lamp. Replace the exposure lamp.
  Incorrect shading position. Adjust the position of the contact glass (shading plate). If the problem still occurs, replace the home position switch.
  Defective PWB. Replace the main/engine PWB or inverter PWB and check for correct operation.

• Code: C3300
• Description: AGC problem
  After AGC, correct input is not obtained at CCD
• Causes: Poor contact in the connector terminals
  Defective exposure lamp.
  Defective PWB
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC27 on the main/engine PWB and the connector on the CCD PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective exposure lamp. Replace the exposure lamp.
  Defective PWB. Replace the main/engine PWB or CCD PWB and check for correct operation.

• Code: C4000
• Description: Polygon motor synchronization problem
  The polygon motor does not reach the stable speed within 20 s of the START signal turning on.
• Causes: Poor contact in the connector terminals
  Defective polygon motor.
  Defective main/ engine PWB
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the main/engine PWB and laser scanner unit, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective polygon motor. Replace the laser scanner unit.
  Defective main/ engine PWB. Replace the main/engine PWB and check for correct operation.

• Code: C4010
• Description: Polygon motor steady-state problem
  Stable OFF is detected for 5 s continuously after polygon motor stability.
• Causes: Poor contact in the connector terminals.
  Defective polygon motor.
  Defective main/ engine PWB.
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the main/engine PWB and laser scanner unit, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective polygon motor. Replace the laser scanner unit.
  Defective main/ engine PWB. Replace the main/engine PWB and check for correct operation.

• Code: C4200
• Description: BD steady-state problem
  ASIC detects a BD error for 600 ms after the polygon motor rotation has been stabilized.
• Causes: Poor contact in the connector terminals
  Defective laser scanner unit.
  Defective main/ engine PWB
• Remedy: Poor contact in the connector terminals. Check the connection of connector YC3 on the main/engine PWB and laser scanner unit, and the continuity across the connector terminals. Repair or replace if necessary.
  Defective laser scanner unit. Replace the laser scanner unit.
  Defective main/ engine PWB. Replace the main/engine PWB and check for correct operation.