Konica Minolta bizhub C658 Service Manual page 1498

bizhub C658/C558/C458/C368/C308/C258
Trouble detection condition Image data is not input from the scanner to the MFP board (MFPB).
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Select [Service Mode] -> [State Confirmation] -> [Memory/Storage Adjustment] -> [Memory Bus Check] ->
conduct the memory bus function.
2. Check the connector between CCDB CN3-MFPB CN1 for proper connection and correct as necessary. (bizhub C368/C308/C258)
3. Check the connector between CCDB PJ3-MFPB CN9 for proper connection and correct as necessary. (bizhub C658/C558/C458)
4. Replace CCDB. (bizhub C368/C308/C258
5. Replace MFPB. (bizhub C368/C308/C258
3.18.8 C6751 (bizhub C658/C558/C458/C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Check the connector between CCDB CN3-MFPB CN1 for proper connection and correct as necessary. (bizhub C368/C308/C258)
2. Check the connector between CCDB PJ3-MFPB CN9 for proper connection and correct as necessary. (bizhub C658/C558/C458)
3. Check for possible extraneous light and correct as necessary.
4. Clean the lens, mirrors, CCD surface, and shading sheet if dirty.
5. Correct reflective mirror of the scanner if faulty, or change scanner mirror.
6. Replace CCDB. (bizhub C368/C308/C258
7. Replace MFPB. (bizhub C368/C308/C258
3.18.9 C6752 (bizhub C658/C558/C458/C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition When starting the machine, verification on reading and writing the predetermined value for image processing
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Correct the harness connection of CCDB if faulty.
2. Replace CCDB. (bizhub C368/C308/C258
3. Replace MFPB. (bizhub C368/C308/C258
3.18.10 C6753 (bizhub C368/C308/C258)
(1) Contents
Trouble type
Rank
Trouble detection condition When starting the machine, verification on reading and writing the predetermined value for image processing
Trouble isolation
Relevant electrical parts
(2) Procedure
1. Correct the harness connection between DFCB and DSIPB if faulty.
2. Correct the harness connection between DSIPB CN01-MFPB CN22 if faulty.
3. Replace CIS.
4. Replace DSIPB.
5. Replace MFPB.
Scanner
• MFP board (MFPB)
• CCD board (CCDB)
/ bizhub C658/C558/C458)
/ bizhub C658/C558/C458)
C6751: CCD gain adjustment failure
B
• 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
• LED exposure unit
• CCD board (CCDB)
• MFP board (MFPB)
/ bizhub C658/C558/C458)
/ bizhub C658/C558/C458)
C6752: ASIC clock input error (front side)
C
ASIC on CCD board (CCDB) was conducted, and verification failure was detected.
-
• CCD board (CCDB)
• MFP board (MFPB)
/ bizhub C658/C558/C458)
/ bizhub C658/C558/C458)
C6753: ASIC clock input error (back side) (When DF-704 is installed)
C
ASIC on dual scan image processing board (DSIPB) was conducted, and verification failure was detected.
-
• CIS module (CIS)
• Dual scan image processing board (DSIPB)
• MFP board (MFPB)
K TROUBLESHOOTING > 3. TROUBLE CODE
K-170
[Scanner -> Memory], and