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C3425 (bizhub 750i)
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Contents
Trouble type | C3425: Fusing warm-up trouble |
Rank | A |
Trouble detection condition | -Detected temperature of the heating roller temperature sensor (TEMS) does not go up a given range of temperature even after a lapse of given period of time at warm up. -The temperature detected by the heating roller temperature sensor (TEMS) does not shift from the pre-standby state even after the lapse of a predetermined period of time after the completion of warm-up. |
Trouble isolation | – |
Relevant electrical parts | -Fusing unit -Heating roller temperature sensor (TEMS) -DC power supply (DCPU) -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, CN96-BASEB CN4E for proper connection and correct as necessary.
- Check the connector between BASEB CN2E-DCPU CN7 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)
- Replace DCPU. (Part# AA7NR71600)