• Code: C5355
• Description: Cooling Fan Motor 3’s failure to turn
  • The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 M25 operation check PWB-MC PJ40MC-1 (REM) PWB-MC PJ40MC-3 (LOCK) C to D-12. 4 Change PWB-MC.

• Code: C5356
• Description: Cooling Fan Motor 1’s failure to turn
  • The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 M24 operation check PWB-MC PJ40MC-4 (REM) PWB-MC PJ40MC-6 (LOCK) C to D-12. 4 Change PWB-MC.

• Code: C5370
• Description: MFP Control Board Cooling Fan Motor’s failure to turn
  • The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 M27 operation check PWB-SIF PJ08SIF-3 (LOCK) M-17. 4 Change PWB-MC2.

• Code: C6102
• Description: Scanner Home Sensor malfunction
  • The Scanner Home Sensor is unable to detect the Scanner located at its home position. • The Scanner Home Sensor is unable to detect a Scanner even when the Scanner Motor has been driven to move the Scanner over the maximum traveling distance. • The Scanner Home Sensor detects the Scanner when the Scanner has moved 5 mm from the position, at which it blocks the Scanner Home Sensor.
• Remedy: 1 Correct or change the Scanner drive (cable, pulley, gear, belt) if it is faulty. 2 Correct the Scanner Motor set screw if loose. 3 Adjust “Image Position Leading Edge” and “Feed Direction Adjustment.” 4 Check the PC201, M201, PWB-IC and PWB-C connector for proper connection and correct as necessary. 5 PC201 I/O check PWB-C PJ11C-8 (ON) N-13 6 M201 operation check PWB-IC PJ3IC-1 (REM) PWB-IC PJ3IC-3 (LOCK) S-9. 7 Change PWB-IC. 8 Change PWB-C.

• Code: C6103
• Description: Scanner overrun failure
  • The Scanner Home Sensor detects the Scanner at its home position during a period of time that begins with the time when a prescan command and a scan preparation command are executed and ends when a home return command is executed.
• Remedy: 1 Correct or change the Scanner drive (cable, pulley, gear, belt) if it is faulty. 2 Correct the Scanner Motor set screw if loose. 3 Adjust “Image Position Leading Edge” and “Feed Direction Adjustment.” 4 Check the PC201, M201, PWB-IC and PWB-C connector for proper connection and correct as necessary. 5 PC201 I/O check PWB-C PJ11C-8 (ON) N-13 6 M201 operation check PWB-IC PJ3IC-1 (REM) PWB-IC PJ3IC-3 (LOCK) S-9. 7 Change PWB-IC. 8 Change PWB-C.

• Code: C6301
• Description: Scanner Cooling Fan Motor’s failure to turn
  • The Fan Lock signal remains HIGH for a predetermined continuous period of time while the Motor remains stationary.
• Remedy: 1 Check the connector of motor for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 M202 operation check PWB-C PJ81C-2 (REM) PWB-C PJ81C-3 (LOCK) N-10. 4 Change PWB-MC.

• Code: C6704
• Description: Scanner Time Out
  • Image data is not input from the Image Processing Board (PWB-C) to the MFP Control Board (PWB-MFPC).
• Remedy: 1 Select ?gService Mode - ?gState Confirmation - ?gMemory/HDD Adj. - ?gMemory Bus Check - Scanner-Memory. 2 Check the connectors between PWB-C and PWB-CF for proper connection and correct as necessary. 3 Change PWB-MFPC. 4 Change PWB-C.

• Code: C6751
• Description: CCD clamp/gain adjustment failure
  • The adjustment value is 0 or 255 during a CCD clamp adjustment. • The peak value of the output data is 64 or less during a CCD gain adjustment
• Remedy: 1 Correct the harness connection between PWB-A and PWB-C if faulty. 2 Check for possible extraneous light and correct as necessary. 3 Clean the lens, mirrors, CCD surface, and shading sheet if dirty 4 Correct reflective mirror of the Scanner if faulty, or change Scanner. 5 Change PWB-A. 6 Change PWB-C.