Computer Hardware User Manual

Installingorreplacingamemorymodule
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreUserGuide.ToobtainacopyoftheThinkCentreUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides
Thissectionprovidesinstructionsonhowtoinstallorreplaceamemorymodule.
YourcomputerhasfourslotsforinstallingorreplacingDDR3UDIMMsthatprovideuptoamaximumof32
GBsystemmemory.Wheninstallingorreplacingamemorymodule,usethefollowingguidelines:
•Use1GB,2GB,4GB,or8GBDDR3UDIMMsinanycombinationuptoamaximumof32GB.
•InstallmemorymodulesinthesequenceofDIMM2,DIMM4,DIMM1,andDIMM3.See“Locating
partsonthesystemboard”onpage77
.
Toinstallorreplaceamemorymodule,dothefollowing:
1.Turnoffthecomputeranddisconnectallpowercordsfromelectricaloutlets.
2.Openthecomputercover.See“Openingthecomputercover”onpage121.
3.Removethefrontbezel.See“Removingandreinstallingthefrontbezel”onpage122.
4.Removetheheatsinkfanduct.See“Replacingtheheatsinkandfanassembly”onpage139.
5.Removetheharddiskdrive.See“Replacingtheharddiskdrive”onpage134.
6.Pivottheopticaldrivebayupwardtogainaccesstothememoryslots.See“Replacingtheoptical
drive”onpage137.
7.Locatethememoryslots.See“Locatingpartsonthesystemboard”onpage77.
8.Removeanypartsthatmightpreventaccesstothememoryslots.
9.Dependingonwhetheryouareinstallingorreplacingamemorymodule,dooneofthefollowing:
•Ifyouarereplacinganoldmemorymodule,opentheretainingclipsandgentlypullthememory
moduleoutofthememoryslot.
Figure57.Removingamemorymodule
Chapter9.ReplacingFRUs(MachineTypes:4466,4471,4474,4477,4480,4485,4496,4498,4503,4512,4514,
4518,4554,7005,7023,7033,7035,7072,7079,and7177.)125