Code :

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. Scanner
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 • 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: MFP board (MFPB) CCD board (CCDB)
Remedy: 1 Correct the harness connection of CCDB if faulty. 2 Change CCDB 3 Change MFPB

Code: C6901
Description: DSC board mount failure 1 • When MFP detects that DSC board 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
Description: DSC Bus check NG1-1 • When DSC bus check 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: C6903
Description: DSC Bus check NG1-2 • When DSC bus check 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. Scanner
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

Code: C8101
Description: Before reading pressure welding alienation mechanism • During a pressure motion being performed, the read roller sensor (PS6) output does not change from H to L. • During a retraction motion being performed, the read roller sensor (PS6) output does not change from L to H.
Causes: Reading roller pressure/retraction motor (M4) Read roller sensor (PS6) DF control board (DFCB)
Remedy: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of M4 for proper drive coupling, and correct as necessary. 3 PS6 I/O check, sensor check DFCB PJ6-3 (ON) DF-618 I-4 4 M4 operation check DFCB PJ6-5 to 6 DF-618 I-4 5 Change M4 6 DFCB PS3 conduction check 7 Change DFCB

Code: C8102
Description: Turn around pressure welding alienation trouble • During a pressure motion being performed, the reverse roller sensor (PS7) output does not change from H to L. • During a retraction motion being performed, the reverse roller sensor (PS7) output does not change from L to H.
Causes: Switchback roller pressure/retraction motor (M5) Reverse roller sensor (PS7) DF control board (DFCB)
Remedy: 1 Check the motor and sensor connectors for proper connection, and correct as necessary. 2 Check the connector of M5 for proper drive coupling, and correct as necessary. 3 PS7 I/O check, sensor check REYB PJ3-3 (ON) DF-618 K to L-10 4 DFCB F9 conduction check 5 M5 operation check DFCB PJ6-10 to 11 DF-618 I-7 6 Change M5 7 DFCB PS2 conduction check 8 Change DFCB