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C3726 (bizhub C754/C654)
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Contents
| Trouble type | Fusing abnormally high temperature detection (Middle of the heating roller) |
| Trouble code | C3726 |
| Rank | A |
| Detection timing | The heating roller thermistor/2 continues to detect a temperature higher than a predetermined one for a predetermined period of time. |
| Trouble isolation | – |
| Relevant electrical parts | -Fusing unit -Heating roller thermistor/2 (TH2) -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# A2X0R71011) | – | – |
| 5 | Replace IHPU (Part# A61DM40A00) | – | – |
| 6 | Replace PRCB (Part# A2X0H00102) | – | – |
| 7 | Replace NF1 (Part# A2XKM40J00) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.73. C3722, C3726, C3822, C3903, C3922, C3926)
- Link to the layout drawings for related parts by each trouble code (S.72. C3425, C3725, C3825, C3925)
K.3.8.7 (Link to the Field Service Manual)