88 8-28-2Service Mode > Overview > Backing up Service ModeService Mode > Overview > Backing up Service ModeOverviewService Mode MenuService modeCOPIERFEEDERFAXTESTMODEDISPLAYI/OADJUSTFUNCTIONOPTIONCOUNT ERSSSWMENUNUMNCUPRINTFAXADJUSTFUNCTIONService mode for copierState display modeAdjustment modeOperation / inspection modeI/O display modeCounter modeSpecification setting modeAdjustment modeOperation / inspection modeADF service modeFAX service modeService mode for test print, operation check, etc.Bit switch registration modeMenu switch registration modeNumeric parameter setting modeNCU parameter setting mode(Service adjustment is not available)Print test modeFAX test modeF-8-1Backing up Service ModeEach device is tuned at the time of shipment and the tuned values are written on the servicelabel.However, when replacing the main controller PCBs / DC controller PCBs or clearing RAM,tuned ADJUST and OPTION values are reset to defaults. Each service technician shouldadjust these values in field and ensure to write values after changes in the service label. If thecorresponding item is not found on the service label, enter the value in the blank space.