Samsung MULTIXPRESS CLX-9251 Series Service Manual page 374

4. Troubleshooting
► Error Code
U1–2141
U1–2142
► Error message
Fuser Unit Failure: #U1-2141.
Fuser Unit Failure: #U1-2142.
► Symptom
Temperature of the thermistor is higher than the maximum allowable temperature.
► 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) Check if the power voltage is normal. (Is the voltage during the operation ±10% of the rated voltage?)
3) Remove the fuser unit. After opening the jam cover, check if jammed or wrapped paper is in the fuser unit.
4) If the problem persists, Check the following :
(Refer to 3.3.23. Fuser unit)
a) Check if the non-contact type
5) If the problem persists, replace the Fuser
6) If the problem persists, replace the Main
JC44-00211A), SMPS(110V : JC44-00093A, 220V : JC44-00100A)
4-189
thermistor(1404–001453)
unit(110V : JC91-01064A, 220V : JC91-01063A).
board(JC92-02429A)
is broken.
or FDB board(110V : JC44-00210A, 220V :
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