• Code: C6753
• Description: ASIC clock input error (back 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

• Code: C6754
• Description: CIS clamp adjustment failure
  • After the gain adjustment is performed at the start-up, the CIS clamp adjustment value is too high or too low.
• Causes: CIS module (CIS) DS image processing board (DSIPB) CIS inverter board (CINVB) CIS power supply (CISPU) MFP board (MFPB)
• Remedy: 1 Correct the harness connection between CIS and DSIPB if faulty. - - 2 Correct the harness connection between CIS and CINVB if faulty. - - 3 Correct the harness connection between CIS and CISPU if faulty. - - 4 Check for possible extraneous light and correct as necessary. - - 5 Clean the back side reading glass and the shading sheet if dirty. - - 6 Change CIS - - 7 Change DSIPB - - 8 Change CINVB - - 9 Change CISPU - - 10 Change MFPB

• Code: C6755
• Description: CIS gain adjustment failure
  • After the gain adjustment is performed at the start-up, the peak value of the output data is lower than a given value.
• Causes: CIS module (CIS) DS image processing board (DSIPB) CIS inverter board (CINVB) CIS power supply (CISPU) MFP board (MFPB)
• Remedy: 1 Correct the harness connection between CIS and DSIPB if faulty. - - 2 Correct the harness connection between CIS and CINVB if faulty. - - 3 Correct the harness connection between CIS and CISPU if faulty. - - 4 Check for possible extraneous light and correct as necessary. - - 5 Clean the back side reading glass and the shading sheet if dirty. - - 6 Change CIS - - 7 Change DSIPB - - 8 Change CINVB - - 9 Change CISPU - - 10 Change MFPB

• Code: C6901
• Description: DSC board mount failure 1
  • When MFP detects that DSC board (front side) is not properly installed.
• Causes: DSC board (SC-507) MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSC board if faulty. - - 2 Change DSC board - - 3 Change MFPB

• Code: C6902, C6903
• Description: DSC Bus check NG1
  • When DSC bus check (front side) detects an error.
• Causes: DSC board (SC-507) MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSC board if faulty. - - 2 Change DSC board - - 3 Change MFPB

• Code: C6911
• Description: DSC board mount failure 2
  • When MFP detects that DSC board (back side) is not properly installed.
• Causes: DSC board (SC-507) MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSC board if faulty. - - 2 Change DSC board - - 3 Change MFPB

• Code: C6912, C6913
• Description: DSC Bus check NG2
  • When DSC bus check (back side) detects an error.
• Causes: DSC board (SC-507) MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSC board if faulty. - - 2 Change DSC board - - 3 Change MFPB

• Code: C6F01
• Description: Scanner sequence trouble 1
  • The original transport interval becomes shorter than the designed value due to an original transport control error in original reading in ADF.
• Causes: MFP board (MFPB) DF control board (DFCB)
• Remedy: 1 Correct the harness connection between main body and ADF if faulty. - - 2 Change DFCB - - 3 Change MFPB