C3926 (bizhub C554/C454)
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Contents
| Trouble type | Fusing sensor wire breaks detection (Middle of the heating roller) |
| Trouble code | C3926 |
| Rank | A |
| Detection timing | -After a predetermined period of time after the warm-up stage is started, the heating roller thermistor/2 (TH2) voltage does not decrease by predetermined steps (temperature rise) within a predetermined time. -When a temperature detected by the heating roller thermister/1 (TH1) is compared with the temperature detected by the heating roller thermister/2 (TH2) to find out that the difference exceeded the predetermined temperature. |
| Trouble isolation | – |
| Relevant electrical parts | -Fusing unit -Heating roller thermistor/1 (TH1) -Heating roller thermistor/2 (TH2) -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 and PRCB for proper connection and correct or change as necessary. | – | – |
| 4 | Replace the fusing unit (bizhub C554 Part# A4FJR70344 / bizhub C454 Part# A2XKR71044) | – | – |
| 5 | Replace PRCB (C554 Part# A2XKH00104 / C454 A4FJH00104) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.86. C3922)
- Link to the layout drawings for related parts by each trouble code (S.87. C3925)
- Link to the layout drawings for related parts by each trouble code (S.88. C3926)
K3.8.9 (Link to the Field Service Manual)