C2356 (bizhub 958/808)

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Trouble typeC2356: IU cooling fan/in’s failure to turn
RankB
Trouble detection conditionThe fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Trouble isolation
Relevant electrical parts• IU cooling fan /in (FM16)
• MFP board (MFPB)

 Procedure

  1. Check the connector between FM16-relay CN700-MFPB CN18E for proper connection and correct as necessary.
  2. Check the fan for possible overload and correct as necessary.
  3. FM16 operation check
    • Control signal: MFPB CN18E-9 (DRIVE), MFPB CN18E-11 (LOCK)
    • Location of electrical component: 15 to 16-K
  4. Replace FM16. (Part# 4556M10000)
  5. MFPB F7E conduction check
  6. Replace MFPB. (Part# A796H02003)

NOTICE

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

K.3.8.11 (Link to the Field Service Manual)