C5351 (bizhub C658/C558/C458)

Contents

Trouble type	C5351: Power supply cooling fan’s failure to turn
Rank	B
Trouble detection condition	The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Trouble isolation	–
Relevant electrical parts	• Power supply cooling fan (FM1) • MFP board (MFPB)

 Procedure

1. Check the connector between FM1-relay CN26-MFPB CN31E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM1 operation check
   • Control signal: MFPB CN31E<A>-9 (REM), MFPB CN31E<A>-11 (LOCK)
   • Location of electrical component: 23-J
4. Replace FM1. (Part# 4139M10000)
5. Replace MFPB. (C458 Part# A79MH02102 / C558 or C658 Part # A79JH02102)

NOTICE

• Link to the wiring diagram (bizhub C658/C558/C458)

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

K.3.17.4 (Link to the Field Service Manual)