How Can We Help?
C3921 (bizhub 287/227)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
Contents
| Trouble type | C3921: Fusing sensor wire breaks detection (Middle of the heating roller) |
| Rank | A |
| Trouble detection condition | The maximum value and minimum value of detected temperature of the thermistor/1 (TH1) is compared after a lapse of given time from starting of warm up and the gap between the value of maximum and minimum is below a given temperature. |
| Trouble isolation | – |
| Relevant electrical parts | -Fusing unit -Thermistor/1 (TH1) -MFP board (MFPB) |
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
- Check the open/close operation of the right door.
- Check the connector between the fusing unit-relay CN19-MFPB CN18E for proper connection and correct as necessary.
- Replace the fusing unit. (Part# A7AHR72311 or A7AHPP3800(For refresh model))
- Replace MFPB. (Part# A7AHH0201D)
K.3.10.5 (Link to the Field Service Manual)