Laptop User Manual

Figure4.Systemboardpartlocations
1Thermalsensorconnector
10PS/2keyboardandmouseconnector
2Memoryslots(2)11FrontUSBconnector2(forconnectingadditional
USBdevices)
3Battery
12Coverpresenceswitchconnector(Intrusionswitch
connector)
4Microprocessorfanconnector
13PCIcardslot
5ClearCMOS(ComplementaryMetalOxide
Semiconductor)/Recoveryjumper
14FrontUSB,frontpanel,andfrontaudioconnector
(forconnectingUSBports1and2onthefrontbezel,
LEDindicatorsandpowerswitch,andmicrophoneand
headphoneconnectorsonthefrontbezel)
6Internalspeakerconnector
15SATAconnector1(SATA3.0connector)
7Serial(COM2)connector16Systemfanconnector
8eSATAconnector
174-pinpowerconnector
9SATAconnector2(SATA2.0connector)
18Microprocessor
Openingthecomputercover
Attention:
Donotopenyourcomputerorattemptanyrepairbeforereadingandunderstandingthe“Importantsafetyinformation”
intheThinkCentreUserGuide.ToobtainacopyoftheThinkCentreUserGuide,goto:
http://www.lenovo.com/ThinkCentreUserGuides
Thissectionprovidesinstructionsonhowtoopenthecomputercover.
72ThinkCentreHardwareMaintenanceManual