Lenovo System x3550 M4 - System-Board Leds

Table3.SystemboardSW3switchblockdefinition
SwitchnumberDefaultpositionDescription
1
Off
Reserved.
2
Off
Reserved.
3
Off
Reserved.
4
OffPower-onpasswordoverride.Changingthepositionofthisswitch
bypassesthepower-onpasswordcheckthenexttimetheserver
isturnedonandstartstheSetuputilitysothatyoucanchange
ordeletethepower-onpassword.Youdonothavetomovethe
switchbacktothedefaultpositionafterthepower-onpassword
inoverridden.
Changingthepositionofthisswitchdoesnotaffecttheadministrator
passwordcheckifanadministratorpasswordisset.
See“Passwords”onpage101
foradditionalinformationabout
passwords.
Thefollowingtabledescribesthefunctionsofthebuttononthesystemboard.
Table4.Buttonontheserver
ButtonnameFunction
ForceNMIbutton
Thisbuttonisontherearoftheserver.Pressthisbutton
toforceanonmaskableinterrupttothemicroprocessor.
Youmighthavetouseapenortheendofastraightened
papercliptopressthebutton.Youcanalsouseittoforce
ablue-screenmemorydump(usethisbuttononlywhen
youaredirectedtodosobyLenovoSupport).
System-boardLEDs
Thefollowingillustrationshowsthelight-emittingdiodes(LEDs)onthesystemboard.
Chapter2.Installingoptionaldevices29