Samsung CLX-8640ND - Scanner Locked or Another Problem Occurred

4.Troubleshooting
►ErrorCode
S3–3121
►Errormessage
Scannerlockedoranotherproblemoccurred.
►Symptom
Scannermoduledoesnotmove.
►Troubleshootingmethod
1)OpentheDADFunit.
2)Checkifthescanlockingswitchisinlockstatus.Releaseit.ClosetheDADFunit.
3)Iftheproblempersists,removethescanrearcover.Checkifallcablesonscanjointboardareconnectedcorrectly.
4)Removetherearcover.Checkiftheconnectoronthemainboardisconnectedcorrectly.
5)Removethescanglass.
(Referto3.3.22.1ScanGlass.
)
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