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C3425 (bizhub C650i/C550i/C450i)

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Trouble typeC3425: Fusing warm-up trouble
RankA
Trouble detection condition-Detected temperature of the heating roller temperature sensor (TEMS) does not go up a given range of temperature even after a lapse of given period of time at warm up.
-The temperature detected by the heating roller temperature sensor (TEMS) does not shift from the pre-standby state even after the lapse of a predetermined period of time after the completion of warm-up.
Trouble isolation–
Relevant electrical parts-Fusing unit
-Heating roller temperature sensor (TEMS)
-DC power supply (DCPU)
-CPU board (CPUB)
-Base board (BASEB)

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 CN95, CN96-BASEB CN4E for proper connection and correct as necessary.
  4. Check the connector between BASEB CN2E-DCPU CN7 for proper connection and correct as necessary.
  5. Check CPUB for proper installation and correct as necessary.
  6. Replace the fusing unit. (C650i/C550i Part# AA7NR70200 / C450i Part# AA7RR70700)
  7. Replace CPUB. (C450i Part# AA7RH02P02 / C550i Part# AA7PH02P01 / C650i Part# AA7NH02P03)
  8. Replace BASEB. (Part# AA7NH02102)
  9. Replace DCPU. (bizhub C650i/C550i Part# AA7NR71600 / bizhub C450i Part# AA7RR70200)

L.3.10.8 (Link to the Field Service Manual)

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