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C392B (bizhub 750i)
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Contents
| Trouble type | C392B: Fusing sensor 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. |
| Trouble isolation | – |
| Relevant electrical parts | -Fusing unit -Heating roller thermistor/Edg (TH1) -Heating roller thermistor/Ctr (TH2) -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 door.
- Check the connector between the fusing unit-relay CN95-BASEB CN4E for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Replace the fusing unit. (Part# AA7NR70200)
- Replace CPUB. (Part# ACV7H02P02)
- Replace BASEB. (Part# ACV7H02101)