C9402 (bizhub C4050i/C3350i)

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Trouble typeC9402: CIS LED lighting abnormally (front side)
RankB
Trouble detection conditionThe average output value of the CIS LED with the scanner at its standby position is a predetermined value or more at the end of a scan job.
Trouble isolationScanner
Relevant electrical parts• Flat cableCIS module (IR CIS) 
• CPU board (CPUB) 
• Base board (BASEB)

Procedure

  1. Check CPUB for proper installation and correct as necessary.
  2. Replace the flat cable. (Part# A93EN11300)
  3. Replace IR CIS. (Part# AAJNR71200)
  4. Replace CPUB. (Part# A93EH01004)
  5. Replace BASEB. (Part# A93EH02007)

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

L.3.14.1 (Link to the Field Service Manual)