How Can We Help?
C3925 (bizhub 958/808)
Contents
| Trouble type | C3925: Fusing sensor wire breaks detection (Middle of the heating roller) |
| Rank | A |
| Trouble detection condition | bizhub 958, bizhub PRO 958: • C3925: After a predetermined period of time after the warm-up stage is started, the fusing belt temperature sensor/1 (TEMS1) voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time. |
| Trouble isolation | – bizhub 808/758: • C3925: After a predetermined period of time after the warm-up stage is started, the heating roller temperature sensor/1 (TEMS1) voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time. |
| Relevant electrical parts | • Fusing unit • C3925: Fusing belt temperature sensor/1 (TEMS1) (bizhub 958, bizhub PRO 958) • C3925: Heating roller temperature sensor/1 (TEMS1) (bizhub 808/758) • IH power supply unit (IHPU) • Noise filter (NF1) • MFP board (MFPB) |
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
- Check the open/close operation of the upper right door.
- Check the fusing unit-MFPB CN30E for proper connection and correct or change as necessary.
- Check the connector between TEMS1, TEMS2, TEMS3-relay CN512-MFPB CN29E for proper connection and correct as necessary.
- Check the connector between NF1 CN2-IHPU CN1 for proper connection and correct as necessary.
- Check the connector between IHPU CN8-MFPB CN18E for proper connection and correct as necessary.
- Replace the fusing unit. ( 958)A796R71422 )( 808)A795R72922 )
- Replace IHPU. (958)( A796M40B00 )(808)( A8KNM40A02 )
- MFPB IC80E conduction check
- Replace MFPB. ( A796H02003)
- Replace NF1. (958)( A796M40H00 )(808)( A795M40J00 )
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
(Link to the Field Service Manual) K.3.9.18