C8403 (bizhub 4750i/4050i)

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Contents

Trouble type	C8403: Initial data failure
Rank	C
Trouble detection condition	No initial data available for the shading repair function is stored in the storage board (STRGB) and the CPU board (CPUB).
Trouble isolation	–
Relevant electrical parts	-Storage board (STRGB) -CPU board (CPUB) -Base board (BASEB)

Procedure

1. Select [Service Mode] -> [ADF] -> [Shading Repair] -> [Init. Data Input] and perform the function.
2. Check STRGB for proper installation and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. Replace STRGB. (Part# AA2JM72700)
5. Replace CPUB. (Part# ACT9H01003)
6. Replace BASEB.
   4750i (Part# ACT9H02013)
   4050i (Part# ACT9H02002)

(Link to the Field Service Manual)