Lenovo System x3500 M4 - System-Board Leds and Controls

Table3.SystemboardSW4switchblockdefinition(continued)
Switch
numberSwitchname
Default
positionDescription
3Power-onpassword
override
Off
Bypassesthepower-onpasswordcheckthenexttimethe
serveristurnedonandstartstheSetuputilitysothatyoucan
changeordeletethepower-onpasswordwhenon.
Notes:
1.Youdonothavetomovetheswitchbacktothedefault
positionafterthepower-onpasswordinoverridden.
2.Changingthepositionofthisswitchdoesnotaffectthe
administratorpasswordcheckifanadministratorpassword
isset.See“Passwords”onpage111foradditional
informationaboutpasswords.
4
CMOSclearOffClearsCMOSmemorywhenon.
Notes:
1.Beforeyouchangeanyswitchsettingsormoveanyjumpers,turnofftheserver.Reviewtheinformation
in“Safety”onpagev,“Installationguidelines”onpage35,“Handlingstatic-sensitivedevices”on
page37,and“Turningofftheserver”onpage23.
2.Anysystem-boardswitchorjumperblockthatisnotshownintheillustrationsinthisdocumentare
reserved.
System-boardLEDsandcontrols
Thefollowingillustrationshowsthelight-emittingdiodes(LEDs)onthesystemboard.
AnyerrorLEDcanbelitafteracpowerhasbeenremovedfromthesystem-boardtraysothatyoucan
isolateaproblem.Afteracpowerhasbeenremovedfromthesystem-boardtray,powerremainsavailable
totheseLEDsforupto90seconds.ToviewtheerrorLEDs,pressandholdthelightpathbuttononthe
systemboardtolighttheerrorLEDs.TheerrorLEDsthatwerelitwhilethesystem-boardtraywasrunning
willbelitagainwhilethebuttonispressed.
ThefollowingillustrationshowstheLEDsandcontrolsonthesystemboard.
Chapter2.Installingoptionaldevices31