4.SelectPassword.
5.SelectHard-diskxpassword,wherexistheletteroftheharddiskdrive.Apop-upwindowopens.
6.SelectMasterHDP.
7.TypethecurrentmasterHDPintheEnterCurrentPasswordeld.thenleavetheEnterNewPassword
eldblank,andpressEntertwice.
8.PressF10.
9.SelectY esintheSetupCongurationwindow.BothuserHDPandmasterHDPwillhavebeenremoved.
Powermanagement
Toreducepowerconsumption,thecomputerhasthreepowermanagementmodes:scr eenblank,sleep
(standbyinWindowsXP),andhibernation.
Screenblankmode
Ifthetimesetonthe“Turnoffmonitor”timerintheoperatingsystemexpires,theLCDbacklightturnsoff.
Toputthecomputerintoscreenblankmode,doasfollows:
1.PressFn+F3.Apanelforselectingapowerplan(inWindowsXP,powerscheme)appears.
2.SelectPoweroffdisplay(keepcurrentpowerplan)(inWindowsXP,keepcurrentpowerscheme).
Youcanalsoputthecomputerintoscreenblankmode,pressThinkVantagebuttonandusetheThinkVantage
Toolbox.
Toendscreenblankmodeandresumenormaloper ation,pressanykey.
Sleep(standby)mode
Whenthecomputerenterssleep(standby)mode,thefollowingeventsoccurinadditiontowhatoccurs
inscreenblankmode:
•TheLCDispoweredoff.
•Theharddiskdriveispoweredoff.
•TheCPUstops.
Toentersleep(standby)mode,pressFn+F4.
Note:YoucanchangetheactionoftheFn+F4keycombinationbychangingthesettingsinPowerManager.
Incertaincircumstances,thecomputergoesintosleep(standby)modeautomatically:
•Ifa“suspendtime”hasbeensetonthetimer ,andtheuserdoesnotdoanyoperationwiththekeyboard,
theT rackPoint,theharddisk,theparallelconnector,orthediskettedrivewithinthattime.
•Ifthebatteryindicatorblinksorange,indicatingthatthebatterypowerislow.
Note:Evenifyoudonotsetthelow-batteryalarm,thechargeindicatornotiesyouwhenthebatteryislow,
andthenthecomputerentersthepower-savingmodeautomatically.
Tocausethecomputertoreturnfromsleep(standby)modeandresumeoperation,dooneofthefollowing:
•PresstheFnkey.
•OpentheLCDcover.
•Turnonthepowerswitch.
38ThinkPadT520,T520i,andW520HardwareMaintenanceManual