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C3425 (bizhub 950i/850i)
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Contents
| Trouble type | C3425: Fusing warm-up trouble |
| Rank | A |
| Trouble detection condition | – The temperature detected by the heating roller temperature sensor/1 (RD1) does not go up a given range of temperature even after a lapse of given period of time after the warm-up has started. – The temperature detected by the heating roller temperature sensor/2 (RD2) does not go up a given range of temperature even after a lapse of given period of time after the warm-up has started. – The warm-up does not end within a given period of time from the start of the warm-up. |
| Trouble isolation | – |
| Relevant electrical parts | – Fusing unit – Heating roller temperature sensor/1 (RD1) – Heating roller temperature sensor/2 (RD2) – 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 the connector between RD1-relay CN923-relay CN807-BASEB CN30E for proper connection and correct as necessary.
- Check the connector between RD2-relay CN923-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.