Manual

3.Turnonthecomputer.Ifthecomputercannotbepoweredon,goto“Powersystemcheckout”on
page34,andcheckthepowersources.
Ifanerrorcodeappears,goto“Symptom-to-FRUindex”onpage43.
4.WhentheThinkPadlogocomesup,immediatelypressF12toentertheBootMenu.
5.InsertthePC-DoctorCDintotheopticaldrive.
6.PresscursorkeystoselectATAPICDx(x:0,1,...)andthenpressEnter.
7.Followtheinstructionsonthescreen.
8.ThemainpanelofPC-Doctorappears.
9.SelectDiagnosticswiththearrowkeys,andpressEnter.
Note:Y oucanselectanitemnotonlywiththearrowkeys,butalsowiththeTrackPoint
®
pointer.
InsteadofpressingEnter,clicktheleftbutton.
Apull-downmenuappears.(Itsexactformdependsonthemodel.)
Note:PC-Doctormenudoesnotmeantheformalsupportdevicelist.Someunsupporteddevicenames
mayappearinthePC-Doctormenu.
Diagnostics
Run Normal Test
Run Quick Test
CPU/Coprocessor
Systemboard
System Memory
Video Adapter
Fixed Disks
Diskette Drives
Other Devices
Communication
Interactive Tests Hardware Info Utility Quit F1=Help
PC-DOCTOR 2.0 Copyright 2008 PC-Doctor, Inc. All Rights Reserved.
Use the cursor keys and ESC to move in menus. Press ENTER to select.
Wireless LAN
Theoptionsonthetestmenuareasfollows:
DiagnosticsInteractiveTests
•RunNormalTest
•RunQuickTest
•CPU/Coprocessor
•SystemMemory
•Systemboard
•VideoAdapter
•FixedDisks
•DisketteDrives
•OtherDevices
•Communication
•WirelessLAN
•Keyboard
•Video
•InternalSpeaker
•Mouse
•Diskette
•SystemLoad
•OpticalDriveTest
•IntelWLANRadioTest
Notes:
•IntheKeyboardtestinInteractiveT ests,theFnkeyshouldbehelddownforatleast2seconds;otherwise,it
cannotbesensed.
•VideoAdaptertestsupportsonlytheLCDdisplayontheThinkPadNotebook.Ifyouhaveanexternalmonitor
attachedtoyourcomputer,detachitbeforerunningPC-DoctorforDOS.
•TotestDigitalSignatureChip,thesecuritychipmustbesettoActive.
10.Runtheapplicablefunctiontest.
30ThinkPadT420andT420iHardwareMaintenanceManual