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C3731 (bizhub C3320i)
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Contents
Trouble type | C3731: Fusing abnormally high temperature detection (hard protector) |
Rank | A |
Trouble detection condition | The hard protector signal malfunction is detected for a predetermined continuous period of time or more. |
Trouble isolation | – |
Relevant electrical parts | -Fusing unitHeating roller thermistor/Edg (TH1) -Heating roller temperature sensor (TEMS) -Heating roller thermistor/Ctr (TH2) -DC power supply (DCPS) -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 CN3-BASEB CN10E for proper connection and correct as necessary.
- Check the connector between the fusing unit-relay CN2-DCPS CN2 for proper connection and correct as necessary.
- Check CPUB for proper installation and correct as necessary.
- Replace the fusing unit. (Part# AAJRR70300)
- Replace CPUB. (Part# AAJRH01005)
- Replace BASEB. (Part# A93EH02007)
- Replace DCPS. (Part# AAJRR70600)
L.3.8.4 (Link to the Field Service Manual)