U2-Xxxx Type (Lsu) Error Code - Samsung SL-M4580FX Service Manual

4. Troubleshooting

4.6.7. U2-xxxx type (LSU) error code

► Error Code
U2–1111
U2–1112
U2–1113
U2–1114
► Error message
LSU Failure: #U2-1111. Please turn off then on.
LSU Failure: #U2-1112. Please turn off then on.
LSU Failure: #U2-1113. Please turn off then on.
LSU Failure: #U2-1114. Please turn off then on.
► Symptom
LSU motor does not operate or it operates abnormally. / LSU Motor ready signal 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 :
• If the LSU motor makes a sound,
a) Enter SVC mode to check the LSU motor ready signal.
(Diagnostics > Engine Diagnostics > Engine Test Routines)
b) Select "LSU Motor1 Run Ready". ( Diagnostics > Engine Diagnostics > Engine Test Routines >
110-0000)
c) Press 'Start' button. Check that the status has changed to 'Executing -> Low -> High'.
d) If the status has not changed, the motor ready signal is abnormal. Replace the LSU.
• If the LSU motor does not makes a sound,
a) Turn the machine off and open the side cover. Unplug and reconnect the LSU cable. Check that the LSU
motor make a sound after turning the machine on.
b) If the LSU cable is defective, replace it. Check that the LSU motor make a sound after turning the
machine on.
c) If the problem persists, replace the LSU(JC97-03877A).
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