Samsung SL–C1860FW - Door Is Open. Close It

4.AlignmentandTroubleshooting
►ErrorCode
S2–4120
►Errormessage
Doorisopen.Closeit.
►Symptom
Doorisopenorthecoveropenswitchisdefective.
►Troubleshootingmethod
1)Checkifthefrontcoverisclosedperfectly.
2)Iftheerrorpersists,checkthatthecover-opensensorisworkingnormally.Ifitisdefective,replaceit.
►ErrorCode
S3–3121
►Errormessage
Scannerislocked.
►Symptom
Scannerlockerrorhasoccurred.CISdoesnotmove.
►Troubleshootingmethod
1)CheckiftheCISunitismovingwhenpoweron.
2)CheckiftheatcableisconnectedtotheCISunitproperly.Re-connectorreplacethecable.
3)IftheCISisdefective,replaceit.
4)Checkifthereisanydefectivepartinthescannerunit.(Gear,Belt,Motoretc.)
5)Iftheproblempersists,replacethemainboard.
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