User Manual
Table Of Contents
- Important safety information
- Chapter 1. Product overview
- Chapter 2. Installing or replacing hardware
- Handling static-sensitive devices
- Installing or replacing hardware
- Installing external options
- Opening the computer cover
- Removing and reinstalling the front bezel
- Installing or replacing a memory module
- Replacing the hard disk drive
- Replacing the optical drive
- Replacing the battery
- Replacing the heat sink
- Replacing the internal speaker
- Replacing the front audio and USB assembly
- Replacing the ac power adapter
- Replacing the ac power adapter bracket
- Replacing the keyboard or mouse
- Completing the parts replacement
- Installing security features
- Chapter 3. Recovery information
- Chapter 4. Using the Setup Utility program
- Chapter 5. Updating system programs
- Chapter 6. Troubleshooting and diagnostics
- Chapter 7. Getting information, help, and service
- Appendix A. Notices
- Index
Chapter6.Troubleshootinganddiagnostics
Thischapterdescribessomebasictroubleshootinganddiagnosticprograms.Ifyourcomputerproblem
isnotdescribedhere,seeChapter7“Gettinginformation,help,andservice”onpage45
foradditional
troubleshootingresources.
Basictroubleshooting
Thefollowingtableprovidesinformationtohelpyoutroubleshootyourcomputerproblems.
Note:Ifyoucannotcorrecttheproblem,havethecomputerserviced.Foralistofserviceandsupport
telephonenumbers,refertotheThinkCentreSafetyandWarrantyGuidethatcomeswithyourcomputeror
gototheLenovoSupportWebsiteathttp://www.lenovo.com/support.
SymptomAction
Thecomputerdoesnotstart
whenyoupressthepower
switch.
Verifythat:
•Thepowercordiscorrectlyconnectedtotherearofthecomputerandtoa
workingelectricaloutlet.
•Ifyourcomputerhasasecondarypowerswitchontherearofthecomputer,
makesurethatitisswitchedon.
•Thepowerindicatoronthefrontofthecomputerison.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
Themonitorscreenisblank.
Verifythat:
•Themonitorsignalcableiscorrectlyconnectedtothemonitorandtothe
appropriatemonitorconnectoronthecomputer.
•Themonitorpowercordiscorrectlyconnectedtothemonitorandtoaworking
electricaloutlet.
•Themonitoristurnedonandthebrightnessandcontrastcontrolsareset
correctly.
•Thecomputervoltagematchesthevoltageavailableattheelectricaloutletfor
yourcountryorregion.
•Ifyourcomputerhastwomonitorconnectors,besuretousetheconnector
onthegraphicscard.
Thekeyboarddoesnotwork.
Verifythat:
•Thecomputeristurnedon.
•ThekeyboardissecurelyconnectedtoaUSBconnectoronthecomputer.
•Nokeysarestuck.
Themousedoesnotwork.
Verifythat:
•Thecomputeristurnedon.
•ThemouseissecurelyconnectedtoaUSBconnectoronthecomputer.
•Themouseisclean.Referto“Cleaninganopticalmouse”onpage44
forfurther
information.
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