C5355 (bizhub C368/C308/C258)

 Contents

Trouble type	C5355: Toner cartridge cooling fan 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	Toner cartridge cooling fan (FM4)MFP board (MFPB)

 Procedure

1. Check the connector between FM4-relay CN157-MFPB CN15EB for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. FM4 operation check
   • Control signal: MFPB CN15EB-6 (REM), MFPB CN15EB-8 (LOCK)
   • Location of electrical component: 9-C
4. Replace FM4. (Part# 4139M10000)
5. Replace MFPB. (Part# A7PUH02123)

NOTICE

• Link to the wiring diagram (bizhub C368/C308/C258)

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

K.3.16.3 (Link to the Field Service Manual)