Samsung CLX-9201 Service Manual page 381

► Error Code
U2–6142
U2–6143
► Error message
LSU Failure #U2-6142: Turn off then on.
LSU Failure #U2-6143: Turn off then on.
► Symptom
Hsync signal of the LSU is abnormal.
► Troubleshooting method
1) Turn the machine off then on. Check for the LSU motor operation sound during warm-up.
2) Print a demo page to check that the machine operates normally.
3) If the problem persists, check the following :
a) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable. Print a demo page to
check that the machine operates normally.
b) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable on main board. Print a
demo page to check that the machine operates normally.
c) If the LSU cable(JC39-01688A) is defective, replace it. Check that the LSU motor makes a sound after turning
the machine on.
d) If the problem persists, replace the LSU(JC97-04010A).
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4. Troubleshooting
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