C9401 (bizhub C4050i/C3350i)

Contents

Trouble type	C9401: CIS LED lighting failure (front side)
Rank	B
Trouble detection condition	At the CIS gain adjustment, the machine detected that the output of the CIS LED is lower than the specified value.
Trouble isolation	Scanner
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)