C5370 (bizhub 558/458)

Contents

Trouble type	C5370: Rear side cooling fan’s failure to turn
Rank	C
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	• Rear side cooling fan (FM3) • MFP board (MFPB)

 Procedure

1. Check the connector between FM3-relay CN301-MFPB CN19 for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM3 operation check
   • Control signal: MFPB CN19-3 (LOCK), MFPB CN19-4 (REM)
   • Location of electrical component: 20-O
4. Replace FM3. (Part# A0EDM10500)
5. Replace MFPB. (558 Part# A9HGH02102 / 458 Part# A9HHH02102)

NOTICE

• Link to the wiring diagram (bizhub 558/458)

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

K.3.17.8 (Link to the Field Service Manual)