C3925 (bizhub C287/C227)

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Trouble typeC3925: Fusing sensor wire breaks detection (Main of the heating roller)
RankA
Trouble detection conditionAfter a predetermined period of time after the warm-up stage is started, the heating roller temperature sensor (TEMS) voltage does not increase by predetermined steps (temperature rise) within a predetermined period of time.
Trouble isolation–
Relevant electrical parts-Fusing unit
-Heating roller temperature sensor (TEMS)
-DC power supply (DCPU)
-MFP board (MFPB)

 Procedure

  1. Check the fusing unit for correct installation (whether it is secured in position).
  2. Check the open/close operation of the right door.
  3. Check the connector between the fusing unit-relay CN4-MFPB CN16E for proper connection and correct as necessary.
  4. Replace the fusing unit. (Part# A797R70211)
  5. Replace DCPU. (Part# A797R70800)
  6. Replace MFPB. (Part# A797H02118)

K.3.10.7 (Link to the Field Service Manual)