• 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.
• Remedy: 1 Correct the harness connection between CIS and DSIPB if faulty. 2 Correct the harness connection between CIS and CISPU if faulty. 3 Check for possible extraneous light and correct as necessary. 4 Clean the back side reading glass and the shading sheet if dirty. 5 Replace CIS. 6 Replace DSIPB. 7 Replace CISPU. 8 Replace MFPB.

• Code: C6756
• Description: CCD power-supply voltage malfunction
  Power is not supplied to CCD after the lapse of a given period of time after the main power switch or sub power key is turned ON or the machine recovers from the sleep mode.
• Remedy: 1 Correct the harness connection between CCDB and SCDB if faulty. 2 Correct the harness connection between SCDB and DCPU if faulty. 3 Replace CCDB. 4 Replace SCDB. 5 Replace DCPU.

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

• Code: C6902
• Description: DSC board bus check NG1-1
  When DSC bus check (front side) detects an error.
• Remedy: 1 Correct the harness connection of DSCB/1 if faulty. 2 Replace DSCB/1. 3 Replace MFPB.

• Code: C6903
• Description: DSC board bus check NG1-2
  When DSC bus check (front side) detects an error.
• Remedy: 1 Correct the harness connection of DSCB/1 if faulty. 2 Replace DSCB/1. 3 Replace MFPB.

• Code: C6911
• Description: DSC board mount failure 2
  When MFP detects that DSC board/2 (back side) is not properly installed.
• Remedy: 1 Correct the harness connection of DSCB/2 if faulty. 2 Correct the harness connection of DSIPB if faulty. 3 Replace DSCB/2. 4 Replace DSIPB. 5 Replace MFPB.

• Code: C6912
• Description: DSC Bus check NG2-1
• Remedy: 1 Correct the harness connection of DSCB/2 if faulty. 2 Correct the harness connection of DSIPB if faulty. 3 Replace DSCB/2. 4 Replace DSIPB. 5 Replace MFPB.

• Code: C6913
• Description: DSC Bus check NG2-2
  When DSC bus check (back side) detects an error.
• Remedy: 1 Correct the harness connection of DSCB/2 if faulty. 2 Correct the harness connection of DSIPB if faulty. 3 Replace DSCB/2. 4 Replace DSIPB. 5 Replace MFPB.