Personal Computer 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
Note:Carefullyremovethefourscrewsfromthesystemboardtoavoidanypossibledamagetothe
systemboard.Thefourscrewscannotberemovedfromtheheatsink.
Figure16.Removingtheheatsink
5.Carefullylifttheheatsinkoffthesystemboard.
Notes:
a.Youmighthavetogentlytwisttheheatsinktofreeitfromthemicroprocessor.
b.Donottouchthethermalgreasewhilehandlingtheheatsink.
6.Positionthenewheatsinkonthesystemboardsothatthefourscrewsarealignedwiththeholes
onthesystemboard.
7.Alternatetighteningeachscrewasmallandequalamountuntiltheheatsinkissecuredtothesystem
board.Donotover-tightenthescrews.
Whattodonext:
•Toworkwithanotherpieceofhardware,gototheappropriatesection.
•Tocompletetheinstallationorreplacement,goto“Completingthepartsreplacement”onpage25
.
Replacingtheinternalspeaker
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacetheinternalspeaker.
Toreplacetheinternalspeaker,dothefollowing:
1.Removeallmediafromthedrivesandturnoffallattacheddevicesandthecomputer.Then,disconnect
allpowercordsfromelectricaloutletsanddisconnectallcablesthatareconnectedtothecomputer.
2.Openthecomputercover.See“Openingthecomputercover”onpage12.
Chapter2.Installingorreplacinghardware19