C3821 (bizhub 287/227)
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Contents
| Trouble type | C3821: Fusing abnormally low temperature detection (Middle of the heating roller) |
| Rank | A |
| Trouble detection condition | Detected temperature of the thermistor/1 (TH1) goes below a given temperature for a given period of time consecutively after warm up is completed. |
| 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.3.10.4 (Link to the Field Service Manual)