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

• Code: C6753
• Description: ASIC clock input error (back side). When starting the machine, verification on reading and writing the predetermined value for image processing ASIC on dual scan image processing board (DSIPB) was conducted, and verification failure was detected.
• Causes: • CIS moduleCIS • Dual scan image processing board (DSIPB) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection between DF and DSIPB if faulty. 2 Correct the harness connection between DSIPB and MFPB if faulty. 3 Replace CIS 4 Replace DSIPB 5 Replace 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) • Dual scan image processing board (DSIPB) • 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 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: 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) • Dual scan image processing board (DSIPB) • 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 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 power key is turned ON or the machine recovers from the sleep mode.
• Causes: • CCD board (CCDB) • Scanner drive board (SCDB) • DC power supply (DCPU)
• 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.
• Causes: • DSC board/1 (DSCB/1: SC-508) • MFP board (MFPB)
• Remedy: 1 Correct the harness connection of DSCB/1 if faulty. 2 Replace DSCB/1 3 Replace MFPB

• Code: C6902, C6903
• Description: DSC board bus check NG1-1, DSC board bus check NG1-2. When DSC bus check (front side) detects an error.
• Causes: • DSC board/1 (DSCB/1: SC-508) • MFP board (MFPB)
• 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.
• Causes: • DSC board/2 (DSCB/2; SC-508) • Dual scan image processing board (DSIPB) • MFP board (MFPB)
• 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