C5355 (bizhub C759/C659)

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Trouble typeC5355: Toner cartridge cooling fan 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-Toner cartridge cooling fan (FM8)
-Process drive board (PDB)

 Procedure

  1. Check the connector between FM8-relay CN328-PDB CN10 for proper connection and correct as necessary.
  2. Check the fan for possible overload and correct as necessary.
  3. FM8 load check
    • Check code: 42
    • Multi code: 24
    • Control signal: PDB CN10-10 (DRIVE), PDB CN10-12 (LOCK)
    • Location of electrical component: 19-X
  4. Replace FM8. (Part# 4556M10000)
  5. PDB F4 conduction check
  6. Replace PDB. (Part# A8JEH00400)

L.3.12.5 (Link to the Field Service Manual)