Samsung ProXpress M4075FR - Door Is Open. Close It

4.AlignmentandTroubleshooting
►ErrorCode
S2-4120
►Errormessage
Dooropen.Closeit.
►Symptom
Doorisopenorthecoveropenswitchisdefective.
►Troubleshootingmethod
1)Checkifthefrontdoorisclosedcorrectly.
2)Checkifthereardoorisclosedcorrectly.
3)CheckiftheconnectionbetweenthemainboardandHVPSboardiscorrect.
4)CheckifthecoveropenswitchonHVPSboardisoperatedproperly.Ifitisdefective,replacetheHVPS
board(JC44-00197A).
(Referto3.3.5
)
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