Samsung MULTIXPRESS CLX-9251 Series Service Manual page 371

► Error Code
U1–2115
► Error message
Fuser Unit Failure: #U1-2115. Turn off then on.
► Symptom
The pressure control unit(Cam unit)of the fuser is abnormal.
► Troubleshooting method
1) Turn the machine off. Re-install the fuser unit, then turn the machine on.
(Refer to 3.2.2. Fuser Unit)
2) If the problem persists, check the following :
(Refer to 3.3.23. Fuser Unit)
a) When the side-cover closes, check if the operation sound of the pressure control unit occurs.
b) Check if the parts of the pressure control unit are abnormal.
- Check if the shape of the CAM-REAR(JC66-03299A)) is broken.
- Check if there are abnormal parts of the pressure control unit.
c) Check if the fuser-motor is abnormal via SVC mode.
(Diagnostics > Engine Diagnostics > Engine Test Routines > 109–0140)
3) If the problem persists, replace the Fuser
4) If the problem persists, replace the pressure control unit or cam-motor or Main board(JC92-02452A).
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unit(110V : JC91–01064A, 220V : JC91–01063A)
4. Troubleshooting
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