C4002(bizhub 958/808)

Contents

Trouble type	C4002: PH communication error
Rank	C
Trouble detection condition	When the PH relay board (PHRYB) is receiving data, a communication error is detected.
Trouble isolation	–
Relevant electrical parts	PH relay board (PHRYB)MFP board (MFPB)

 Procedure

1. Turn OFF the main power switch, disconnect and then connect the power cord. Wait for 10 sec. or more after connect the power cord, and turn ON the main power switch.
2. MFPB F2E conduction check
3. Replace MFPB. (Part# A796H02003)
4. PHRYB F1 conduction check.
5. Replace PHRYB. (Part# A796H00300)

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

K.3.10.1 (Link to the Field Service Manual)