• Code: C5354
• Description: Exhaust 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 FM4 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM4 operation check. 4 Change FM4. 5 Change MFPB.

• Code: C5357
• 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 FM1 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM1 operation check. 4 Change FM1. 5 Change MFPB.

• Code: C5371
• Description: MFP 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 FM6 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM6 operation check. 4 Change FM6. 5 Change MFPB.

• Code: C6102
• Description: Drive system 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 travelling distance. • The scanner home sensor detects the scanner when the scanner has moved the maximum travelling distance 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 PS201, M201, REYB/SCAN and IPB connector for proper connection and correct as necessary. 5 PS201 I/O check, sensor check. 7 Change REYB/SCAN. 8 Change IPB.

• Code: C6103
• Description: Slider over running
  • The scanner home sensor detects the scanner at its home position during a period of time that begins with the time when a pre-scan 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 PS201, M201, REYB/SCAN and IPB connector for proper connection and correct as necessary. 5 PS201 I/O check, sensor check. 7 Change REYB/SCAN. 8 Change IPB.

• Code: C6301
• Description: Optical 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 FM201 connector for proper connection and correct as necessary. 2 Check the fan for possible overload and correct as necessary. 3 FM201 operation check. 4 Change REYB/SCAN. 5 Change IPB.

• Code: C6704
• Description: Image input time out
  • Image data is not input from the image processing board (IPB) to the printer control board (PRCB).
• Remedy: 1 Select [Service Mode] - [State Confirmation] - [Memory/HDD Adj.] - [Memory Bus Check] - [Scanner??Memory], and conduct the memory bus function. 2 Check the connectors between IPB and MFPB for proper connection and correct as necessary. 3 Change MFPB. 4 Change IPB.

• 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 CCDB and IPB 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 CCD sensor unit. 6 Change IPB.