• Code: C1150
• Description: Side deck* lift motor (going down) problem • When the side deck’s right cover is closed, the lower limit detection switch does not turn on within 17 s of the side deck lift motor turning on. • When the lower limit detection switch detects edge of turning off signal, the lower limit detection switch does not turn on within 200 ms of the side deck lift motor turning on.
• Causes: Poor contact in the lower limit detection switch connector terminals. Defective lower limit detection switch. Defective side deck main PCB.
• Remedy: Reinsert the connector. Also check for continuity within the connector cable. If none, remedy or replace the cable. Replace the lower limit detection switch. Replace the side deck main PCB.

• Code: C2000
• Description: Image formation motor problem • LOCK ALM signal remains high for 1 s, 1 s after the drive motor has turned on.
• Causes: Poor contact in the image formation motor connector terminals. Defective image formation 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 image formation 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 DRIVE 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: C2550
• Description: Paper conveying motor problem • LOCK ALM signal remains high for 1 s, 1 s after the paper conveying motor has turned on.
• Causes: Poor contact in the paper conveying motor connector terminals. Defective paper conveying 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 conveying 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 drive motor problem • LOCK ALM signal remains high for 1 s, 1 s after the deck drive motor has turned on.
• Causes: Poor contact in the deck drive motor connector terminals. Defective deck 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 deck 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: C2640
• Description: Side deck* drive motor problem • SDDM ALM signal remains high for 1 s, 1 s after the side deck drive motor has turned on.
• Causes: Poor contact in the side deck drive motor connector terminals. Defective side deck 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 side deck 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 or scanner drive PCB. Defective scanner motor.
• Remedy: Check the connection of connector CN10 on the engine PCB and the continuity across the connector terminals. Repair or replace if necessary. Replace the scanner home position switch. Replace the engine PCB or scanner drive PCB and check for correct operation. Replace the scanner motor.

• Code: C3300
• Description: Optical system (AGC) problem • After AGC, correct input is not obtained at CCD.
• Causes: Insufficient exposure lamp luminosity. Defective engine PCB. Incorrect shading position. CCD PCB output problem.
• 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 sensor. Replace the ISU.