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C3925 (bizhub C658/C558/C458)
Contents
Trouble type | C3925: Fusing sensor wire breaks detection (Main of the heating roller |
Rank | A |
Trouble detection condition | After a predetermined period of time after the warm-up stage is started, the heating roller temperature sensor1 (TEMS/1) voltage does not increase by predetermined steps (temperature rise) within a predetermined period of time. |
Trouble isolation | – |
Relevant electrical parts | • Fusing unit • (bizhub C658/C558): Heating roller temperature sensor1 (TEMS/1) • (bizhub C458): Heating roller thermistor1 (TH1) • IH power supply (IHPU) (bizhub C658/C558/C458 only) • MFP board (MFPB) |
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 fusing unit-MFPB CN22E for proper connection and correct or change as necessary. (bizhub C658/C558)
- Check the fusing unit-MFPB CN12E for proper connection and correct or change as necessary. (bizhub C458)
- Check the connector between TEMS/1-relay CN109-MFPB CN15E for proper connection and correct as necessary. (bizhub C658/C558)
- Check the connector between TEMS/2-relay CN138-MFPB CN15E for proper connection and correct as necessary. (bizhub C658/C558)
- Replace the fusing unit. (bizhub C658/C558 / bizhub C458)
- Replace IHPU. (bizhub C658/C558 only) (Part# A8KNM40A02)
- MFPB F12E conduction check
- Replace MFPB. (C458 Part# A79MH02102 / C558 or C658 Part # A79JH02102)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.3.14.9 (Link to the Field Service Manual)