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C7311 (bizhub 650i/550i/450i)

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Trouble typeC7311: Fusing edge cooling fan/Rr failure
RankB
Trouble detection conditionAfter starting the fan, an error is detected for the malfunction detection signal.
Trouble isolation–
Relevant electrical parts-Fusing edge cooling fan/Rr (FM22)
-Base board (BASEB)

Procedure

  1. Check the connector between FM22-relay CN163-relay CN161-BASEB CN22E for proper connection and correct as necessary.
  2. Check the connector of FM22 for proper drive coupling and correct as necessary.
  3. FM22 conduction check.
    • Control signal: BASEB CN22E-16 (REM), BASEB CN22E-18 (LOCK)
    • Location of electrical component: 13-C
  4. Replace FM22. (Part# AA7NM10H00)
  5. Replace BASEB. (Part# AC74H02101)

(Link to the Field Service Manual)

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