C392B (bizhub 950i/850i)
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Contents
| Trouble type | C392B: Fusing wire breaks detection (difference of temperature) |
| Rank | A |
| Trouble detection condition | The difference between the temperature corrected by the heating roller thermistor/Edg (TH1) and the temperature detected by the heating roller thermistor/Ctr (TH2) exceeds a predetermined value after the warm-up. |
| Trouble isolation | – |
| Relevant electrical parts | – Fusing unit – Heating roller thermistor/Edg (TH1) – Heating roller thermistor/Ctr (TH2) – Noise filter (NF1) – CPU board (CPUB) – Base board (BASEB) |
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
- Check the open/close operation of the right upper door.
- Check the connector between the fusing unit-relay CN807-BASEB CN30E for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Replace the fusing unit.
- Replace CPUB.
- Replace BASEB.
- Replace NF1.