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C7305 (bizhub C750i)

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Trouble typeC7305: Paper cooling fan failure
RankC
Trouble detection conditionAfter starting the fan, an error is detected for the malfunction detection signal.
Trouble isolation–
Relevant electrical parts-Paper cooling fan (FM8)
-Expansion control board (EXCB)

Procedure

  1. Check the connector between FM8-relay CN27-relay CN28-EXCB CN14EX for proper connection and correct as necessary.
  2. Check the connector of FM8 for proper drive coupling and correct as necessary.
  3. FM8 conduction check.
    • Control signal: EXCB CN14EX-1 (REM), EXCB CN14EX-3 (LOCK)
    • Location of electrical component: 17-P
  4. Replace FM8. (Part# A93EM10600)
  5. Replace EXCB. (Part# AA7NH00500)

(Link to the Field Service Manual)

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