C5306 (bizhub 558/458)
Contents
| Trouble type | C5306: IH coil cooling fan failure to turn (bizhub 558) | 
| 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 | • IH coil cooling fan (FM7)  • Expansion control board (EXCB) • MFP board (MFPB)  | 
Procedure
- Check the connector between FM7-relay CN77-EXCB CN3 for proper connection and correct as necessary.
 - Check the fan for possible overload and correct as necessary.
 - FM7 operation check
- Control signal: EXCB CN3-1 (REM), EXCB CN3-3 (LOCK)
 - Location of electrical component: 26-T
 
 - Replace FM7. (Part# 9313130051)
 - Replace EXCB. (Part# A9HGH00501)
 - MFPB F6E conduction check
 - 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.3.17.3 (Link to the Field Service Manual)
