• Code: C2000
• Description: Drive motor problem
  • LOCK ALM signal remains high for 1 s, 1 s after the drive motor has turned on.
• Causes: Poor contact in the drive motor connector terminals. Defective drive motor rotation control circuit. Defective drive transmission system.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the drive motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.

• Code: C2500
• Description: Paper feed motor problem
  • LOCK ALM signal remains high for 1 s, 1 s after the paper feed motor has turned on.
• Causes: Poor contact in the paper feed motor connector terminals. Defective paper feed motor rotation control circuit. Defective drive transmission system.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the paper feed motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.

• Code: C2600
• Description: Deck conveying motor/desk drive motor problem
  • No pulse is input within 500 ms of the startup.
  • No pulse is input within 100 ms of the previous pulse input.
• Causes: Defective deck conveying motor PCB/desk drive motor PCB. Deck conveying motor /desk drive motor does not rotate correctly (the motor is overloaded). Poor contact in the deck conveying motor/desk drive motor connector terminals.
• Remedy: Replace the deck conveying motor PCB/ desk drive motor PCB and check for correct operation. Check the gears and remedy if necessary. Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable.

• 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 bypass table.
• Causes: Poor contact in the connector terminals. Defective scanner home position switch. Defective main PCB or scanner drive PCB. Defective scanner motor.
• Remedy: Check the connection of connector CN37 on the main PCB and the continuity across the connector terminals. Repair or replace if necessary. Replace the scanner home position switch. Replace the main PCB or scanner drive PCB and check for correct operation. Replace the scanner motor.

• Code: C3200
• Description: Exposure lamp problem
  • Check the CCD input value for the lighting status of the exposure lamp 100 ms after the exposure lamp is lit and the carriage is moved to the shading position. If the exposure lamp does not light, turn off the lamp. After 500 ms, light the lamp again and, a further 500 ms later, check the CCD input. The exposure lamp does not light after 5 retries.
• Causes: Poor contact of the connector terminals. Defective exposure lamp. Defective main PCB. Incorrect shading position.
• Remedy: Check the connection of connectors CN34 and CN37 on the main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the exposure lamp or inverter PCB. Replace the main PCB and check for correct operation. Adjust the position of the contact glass (shading plate). If the problem still occurs, replace the scanner home position switch.

• Code: C3300
• Description: Optical system problem
  • After AGC, correct input is not obtained at CCD.
• Causes: Poor contact of the connector terminals. Defective main PCB.
• Remedy: Check the connection of connector CN34 on the main PCB, and the continuity across the connector terminals. Repair or replace if necessary. Replace the main PCB and check for correct operation.

• Code: C4000
• Description: Polygon motor synchronization problem
  • When the polygon motor starts, the motor does not become stable even after 20 s.
• Causes: Poor contact in the polygon motor connector terminals. Defective polygon motor. Defective power source PCB. Defective main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the LSU. Check if 24 V DC is supplied to CN2-1 on the main PCB. If not, replace the power source PCB. Check if 24 V DC is output from CN8-10 on the main PCB. If not, replace the main PCB.

• Code: C4010
• Description: Polygon motor steady-state problem
  • When high-speed rotation from lowspeed rotation is requested, the motor does not become stable even after 20 s.
• Causes: Poor contact in the polygon motor connector terminals. Defective polygon motor. Defective power source PCB. Defective main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the LSU. Check if 24 V DC is supplied to CN2-1 on the main PCB. If not, replace the power source PCB. Check if 24 V DC is output from CN8-10 on the main PCB. If not, replace the main PCB.