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: C3100
Description: Scanner carriage problem • The home position is not correct when the power is turned on or copying the document placed on the contact glass.
Causes: Poor contact of the connector terminals. Defective scanner home position switch. Defective engine PCB. Defective scanner motor.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the scanner home position switch. Replace the engine PCB and check for correct operation. Replace the scanner motor.
Code: C3200
Description: Exposure lamp problem • Non-lighting of the exposure lamp is detected at the beginning of copying.
Causes: Poor contact of the connector terminals. Defective exposure lamp or inverter PCB. Defective engine PCB. Incorrect shading position.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the exposure lamp or inverter PCB. Replace the engine 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 (AGC) problem • After AGC, correct input is not obtained at CCD.
Remedy: Replace the exposure lamp or inverter PCB. Replace the engine 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. Replace the ISU.
Code: C4000
Description: Polygon motor synchronization problem • The polygon motor does not reach the stable speed within 15 s of the START signal turning on.
Causes: Poor contact in the polygon motor connector terminals. Defective polygon motor. Defective engine PCB.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the LSU. Replace the engine PCB and check for correct operation.
Code: C4010
Description: Polygon motor steady-state problem • The polygon motor rotation is not stable for 5 s after the polygon motor rotation has been stabilized.
Causes: Poor contact in the polygon motor connector terminals. Defective polygon motor. Defective engine PCB.
Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the LSU. Replace the engine PCB and check for correct operation.