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C5370 (bizhub 360i/300i)

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Trouble typeC5370: Rear side cooling fan failure to turn
RankC
Trouble detection conditionThe fan lock signal remains Low for a predetermined continuous period of time while the fan is turning.
Trouble isolation–
Relevant electrical parts-Rear side cooling fan (FM3)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between FM3-relay CN193-BASEB CN17 for proper connection and correct as necessary.
  2. Check the fan for possible overload and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. FM3 operation check
    • Control signal: BASEB CN17-3 (LOCK), BASEB CN17-4 (PWM)
    • Location of electrical component: 24-D to E
  5. Replace FM3. (Part# A0EDM10500)
  6. Replace CPUB. (Part# AC77H02P02)
  7. BASEB F1 conduction check
  8. Replace BASEB. (Part# AC77H02101)

(Link to the Field Service Manual)

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