Personal Computer User Manual

Notes:
a.Makesureyounotethelocationsofanycablesthatyoudisconnectfromthedrivesorthesystem
board.
b.Makesuretheharddiskdriveassemblyisinthelatcheddownpositionbeforeclosingthecomputer
covertopreventdamagetotheharddiskdrive.
Figure7.Pivotingtheopticaldrivebayassembly
Installingorreplacingamemorymodule
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreSafetyandWarrantyGuidethatcamewithyourcomputer.ToobtainacopyoftheThinkCentre
SafetyandWarrantyGuide,goto:
http://www.lenovo.com/support
Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.
YourcomputerhasfourslotsforinstallingorreplacingDDR3DIMMsthatprovideuptoamaximumof16GB
systemmemory.Wheninstallingorreplacingamemorymodule,usethefollowingguidelines:
•Use1GB,2GB,or4GBDDR3DIMMsinanycombinationuptoamaximumof16GB.
•InstallmemorymodulesinthesequenceofDIMM1,DIMM3,DIMM2,andDIMM4.See“Locating
partsonthesystemboard”onpage9
.
Toinstallorreplaceamemorymodule,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Openthecomputercover.See“Openingthecomputercover”onpage12.
3.Pivottheopticaldrivebayassemblyupwardtogainaccesstothememoryslots.See“Accessingthe
systemboardcomponentsanddrives”onpage12.
4.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage9.
Chapter2.Installingorreplacinghardware13