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C3922 (bizhub C754e/C654e)
Contents
| Trouble type | Fusing sensor wire breaks detection (Edge of the heating roller) |
| Trouble code | C3922 |
| Rank | A |
| Detection timing | After a predetermined period of time after the warm-up stage is started, the heating roller thermistor/3 voltage does not decrease by predetermined steps (temperature rise) within a predetermined period of time. |
| Trouble isolation | – |
| Relevant electrical parts | • Fusing unit • Heating roller thermistor/3 (TH3) • IH power supply (IHPU) • Noise filter (NF1) • Printer control board (PRCB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Check the fusing unit for correct installation (whether it is secured in position). | – | – |
| 2 | Check the open/close operation of the upper right door. | – | – |
| 3 | Check the fusing unit, IHPU, NF1 and PRCB for proper connection and correct or change as necessary. | – | – |
| 4 | Replace the fusing unit (Part# A2X0R71055) | – | – |
| 5 | Replace IHPU (Part# A61DM40A00) | – | – |
| 6 | Replace PRCB (Part# A2X0H00S06) | – | – |
| 7 | Replace NF1 (Part# A2XKM40J00) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.72. C3425, C3725, C3825, C3925)
- Link to the layout drawings for related parts by each trouble code (S.73. C3722, C3726, C3822, C3903, C3922, C3926)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
K.3.8.10 (Link to the Field Service Manual)