NCR RealPOS 70 - Power Management; G3 Mechanical off; G2;S5 Soft off

1-26 Chapter 1: Product Overview
Power Management
TheBIOSsupportsthesupportstheAdvancedConfigurationand
PowerManagementInterface(ACPI)1.1specification.The7402
supportsthesystempowerstatesdefinedbyACPI:
G3 Mechanical Off
Acomputerstatethatisenteredandleftbyamechanicalmeans
Example: Turningoffthesystem’spowerthroughthemovementofa
largeredswitch.
Variousgovernmentagenciesandcountriesrequirethisoperating
mode.Itisimpliedbytheentryofthisoffstatethroughamechanical
meansthatno
electricalcurrentisrunningthroughthecircuitryand
thatitcanbeworkedonwithoutdamagingthehardwareor
endangeringservicepersonnel.TheOSmustberestartedtoreturnto
theWorkingstate.Nohardwarecontextisretained.Exceptforthereal‐
timeclock,powerconsumptioniszero.
G2/S5 Soft Off
Acomputerstatewherethecomputerconsumesaminimalamountof
power.Nousermodeorsystemmodecodeisrun.Thisstaterequiresa
largelatencyinordertoreturntotheWorkingstate.Thesystem’s
contextwillnotbepreservedbythehardware.Thesystemmustbe
restartedto
returntotheWorkingstate.Itisnotsafetodisassemblethe
machineinthisstate.