Samsung M3820dw Factory Reset
Step1 : Press Menu on the printer’s front panel. Step2: Press the #, 1, 9, 3, 4 buttons. Step3: Again tap the Menu button. Step4: Select Tech Menu and tap OK. Step5: Pick the Service function option and select Clear All Mem. Step6: Choose your country name. Step7: Now the Samsung M3820DW Setup printer resets to its default settings.