Samsung ProXpress M4030 Series - Door Is Open. Close It; Front Door Is Open. Close It

4.Troubleshooting
►ErrorCode
S2-4120
S2-4210
►Errormessage
Doorisopen.Closeit
Frontdoorisopen.Closeit
►Symptom
Doorisopenorthecoveropenswitchisdefective.
►Troubleshootingmethod
1)Checkifthefrontdoorisclosedcorrectly.
2)Checkifthereardoorisclosedcorrectly.
3)CheckiftheconnectionbetweenthemainboardandHVPSboardiscorrect.
4)CheckifthecoveropenswitchonHVPSboardisoperatedproperly.Ifitisdefective,replacetheHVPSboard.
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