Lenovo ThinkCentre A70z - Replacing the Internal Speakers; Removing the Internal Speakers

3.Reconnectallcablesthatweredisconnectedfromthesystemboard.See“Systemboardconnectors”
onpage68
.
4.Reinstallthemicroprocessorandheatsinkassemblythatwereremoved.Routethecablessothat
theywillnotbepinchedbyanyFRUsandcovers.See“Installingthemicroprocessorandheatsink
assembly”onpage87
.
5.Closethesystemboardshielding.See“Closingthesystemboardshielding”onpage72.
6.Goto“CompletingtheFRUinstallation”onpage108.
Replacingtheinternalspeakers
Attention
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafety
information”intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.Toobtainacopy
oftheThinkCentreSafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoreplacetheinternalspeakers.
Removingtheinternalspeakers
Toremovetheinternalspeakers,dothefollowing:
1.Turnoffthecomputer.
2.Disconnectallcables,powercords,andexternaloptionsfromyourcomputer.See“Rearconnectors”
onpage65
.
3.Placeasoft,cleantowelorclothonthedeskorsurface.Holdthesidesofyourcomputerandgentlylay
itdownsothatthescreenisagainstthesurfaceandthecoverisfacingup.
4.Removethecomputercover.See“Removingthecomputercover”onpage70.
5.Notethelocationoftheinternalspeakercableconnection.Notetheroutingoftheinternalspeaker
cables.Disconnecttheinternalspeakercablesfromthesystemboard.
6.Removethefourscrewsthatsecureeachoftheinternalspeakerstothefrontbezel.
90ThinkCentreHardwareMaintenanceManual