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C9403 (bizhub C658/C558/C458)

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Trouble typeC9403: CIS LED lighting failure
RankB
Trouble detection conditionAt the CIS gain adjustment, the machine detected that the output of the CIS LED is lower than the specified value.
Trouble isolationScanner
Relevant electrical parts• CIS module (CIS)
• DF power supply (DFPU)
• Dual scan image processing board (DSIPB)
• MFP board (MFPB)

 Procedure

  1. Correct the harness connection between CIS J101-DSIPB CN2 if faulty.
  2. Correct the harness connection between CIS J102-DFPU CN2 if faulty.
  3. Replace CIS. (Part# A782R70200)
  4. DFPU ICP1 conduction check.
  5. Replace DFPU. (Part# A3CKH00200)
  6. Replace DSIPB. (Part# A79JH02A01)
  7. Replace MFPB. (C458 Part# A79MH02102 / C558 or C658 Part # A79JH02102)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

K.3.21.3 (Link to the Field Service Manual)

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