Samsung CLX-8640 series Service Manual page 409

► Error Code
U2–7110
► Error message
LSU Failure: #U2-7110. Turn off then on.
► Symptom
The control of LSU temperature is abnormal.
► Troubleshooting method
1) Turn the machine off then on. Check if the error message is disappeared.
2) If the problem persists, check the following :
a) Turn the machine off and open the side cover. Unplug the LSU
Temperature Sensor cable. Reconnect them.
b) Check that the error status after turning the machine on.
c) If the LSU Cable(JC39-01791A : Flat
d) If the problem persists, replace the LSU(JC97-04073A).
(Refer to 3.3.6. LSU)
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cable) is defective, replace it.
Cable(JC39-01791A : Flat
4. Troubleshooting
cable) and
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