Specifications

1-30 Chapter 1: 7401-2xxx/3xxx Product Overview
AfuselocatedontheInverterBoardprotectspowertotheinverter.
ThisfuseprotectsthesystemfromdamageintheeventofaBacklight
orInverterBoardfault.Thefuseisnotfieldreplaceable;ifitblows,the
safetycharacteristicsofoneormorecomponentsontheInverterBoard
mayhavebeencompromisedandtheInverterBoardshouldbe
replaced.
IfoneorbothBacklighttubesbecomedisconnectedorotherwiseopen‐
circuited,protectioncircuitryshutsdowntheinverter.Thisavoids
over‐poweringasingletubeandalsoprotectsagainsthighvoltage
shorting.
TheBacklighttubesfortheActivedisplays(TFT)
canbereplaced.
Touch Screen
TheTouchScreencompletelycoverstheLCDandismounteddirectly
infrontoftheLCD,behindthefrontplasticbezeloftheterminal.The
touchcontrollerontheProcessorBoardsupportscapacitiveand
resistivetouchglass.
Thetouchglasshasanintegratedharnessthatisroutedintothe
ProcessorBoard
enclosureandisconnectedtoaheaderonthe
ProcessorBoard.
Thetouchglasshasaglare‐reducingtexturethatalsohelpshide
fingerprints.