Samsung ProXpress SL-C3010ND - Image Quality Problem Diagnosis

4.AlignmentandTroubleshooting
4.7.2.8.U2-xxxx(LSUerror)
►ErrorCode
U2–1111/U2-1112
U2–2112/U2-2113/U2–3112/U2–3113/U2–4112/U2–4113/U2–5112/U2–5113
►Errormessage
Error:#U2-xxxxTurnoffthenon
►Symptom
LSUMotordoesnotworknormallyorLSUHSyncsignalisabnormal.
►Troubleshootingmethod
1)ExecutetheLSUmotortestinSVCmode.CheckLSUmotoroperationsound.
2)Ifthereisnosound,removetherightcover.CheckiftheLSUharnessisconnectedonthemainboardproperly.
3)IfitisOK,removethetopcover.CheckiftheLSUharnessisconnectedonLSUboardproperly.
4)CheckiftheLSUharnessisdefective.
5)ReconnecttheLSUharnessandthenexecutetheLSUmotortestagain.
6)Iftheproblempersists,replacetheLSU.
7)IftheproblempersistsafterreplacingLSU,replacethemainboard.
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