• 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.
• Causes: Scanner home sensor (PS201) Scanner motor (M201) Scanner relay board (REYB/SCAN) MFP board (MFPB)
• 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 MFPB connector for proper connection and correct as necessary. - - 5 PS201 I/O check, sensor check REYB/SCAN PJ3-5 (ON) P-17 6 M201 operation check REYB/SCAN PJ5-4 to 7 W-19 7 Change REYB/SCAN. - - 8 Change MFPB.

• Code: C6104
• Description: Opposed board home sensor abnormality (initial)
  • The back side cleaning sensor (PS9) does not change from H to L even after the lapse of a given period of time after the home position detecting operation is started at the initial operation. • The back side cleaning sensor (PS9) does not change from L to H even after the lapse of a given period of time after the home position detecting operation is started at the initial operation.
• Causes: Back side cleaning sensor (PS9) Back side cleaning motor (M7) DF control board (DFCB)
• Remedy: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. - - 2 Check the connector of M7 for proper drive coupling, and correct as necessary. - - 3 PS9 I/O check, sensor check DFCB PJ6-11 (ON) DF-619 C-6 4 M7 operation check DFCB PJ5-5 to 8 DF-619 C-7 5 Change M7 - - 6 DFCB ICP10 conduction check - - 7 Change DFCB

• Code: C6105
• Description: Opposed board home sensor abnormality (normal)
  • At the time of operation other than the initial operation, the back side cleaning sensor (PS9) error is detected.
• Causes: Back side cleaning sensor (PS9) Back side cleaning motor (M7) DF control board (DFCB)
• Remedy: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. - - 2 Check the connector of M7 for proper drive coupling, and correct as necessary. - - 3 PS9 I/O check, sensor check DFCB PJ6-11 (ON) DF-619 C-6 4 M7 operation check DFCB PJ5-5 to 8 DF-619 C-7 5 Change M7 - - 6 DFCB ICP10 conduction check - - 7 Change DFCB

• 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.
• Causes: Optical cooling fan motor (M202) Scanner relay board (REYB/SCAN) MFP board (MFPB)
• 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 M202 operation check REYB/SCAN PJ4-3 (LOCK) P-18 4 Change REYB/SCAN - - 5 Change MFPB

• Code: C6303
• Description: CIS cooling fan motor’s failure to turn
  • While the motor is running, the fan lock signal remains HIGH three times for a predetermined period of consecutive time.
• Causes: CIS Cooling fan motor (FM2) DF control board (DFCB)
• Remedy: 1 Check the FM2 connector for proper connection and correct as necessary. - - 2 Check the fan for possible overload and correct as necessary. - - 3 FM2 operation check DFCB PJ12-4 to 6 DF-619 K-9 4 Change FM2 - - 5 DFCB ICP5 conduction check - - 6 Change DFCB

• Code: C6704
• Description: Image input time out
  • Image data is not input from the scanner to the MFP board (MFPB).
• Causes: MFP board (MFPB) CCD board (CCDB)
• 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 scanner section and MFPB for proper connection and correct as necessary. . . 3 Change MFPB . . 4 Change CCDB

• 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.
• Causes: Exposure unit CCD board (CCDB) MFP board (MFPB)
• Remedy: 1 Correct the harness connection between CCDB and MFPB 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 CCDB - - 6 Change MFPB

• Code: C6752
• Description: ASIC clock input error (front side)
  • When starting the scanner, verification on reading and writing the predetermined value for image processing ASIC on CCD board was conducted, and verification failure was detected.
• Causes: Exposure unit CCD board (CCDB) MFP board (MFPB)
• Remedy: 1 Correct the harness connection of CCDB if faulty. - - 2 Change CCDB - - 3 Change MFPB