C2350 (bizhub 750i)

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Trouble typeC2350: Toner suction fan failure to turn
RankB
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-Toner suction fan (FM11)
-Expansion control board (EXCB)
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Check the connector between FM11-relay CN62-relay CN63-EXCB CN15EX for proper connection and correct as necessary.
  2. Check the fan for possible overload and correct as necessary.
  3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
  4. Check CPUB for proper installation and correct as necessary.
  5. FM11 load check
    • Check code: 42
    • Multi code: 8
    • Control signal: EXCB CN15EX-1 (REM), EXCB CN15EX-3 (LOCK)
    • Location of electrical component: 25-X
  6. Replace FM11. (Part# A93EM10600)
  7. Replace EXCB. (Part# AC74H00501)
  8. Replace CPUB. (Part# ACV7H02P02)
  9. Replace BASEB. (Part# ACV7H02101)

(Link to the Field Service Manual)