Lenovo ThinkPad Edge E540 - Replacing a Wireless WAN Card

ReplacingawirelessWANcard
Beforeyoustart,printtheseinstructions.
PrerequisitesforreplacingorinstallingthewirelessWANcard
DANGER
Duringelectricalstorms,donotconnectthecabletoordisconnectitfromthetelephoneoutlet
onthewall.
DANGER
Electriccurrentfrompower,telephone,andcommunicationcablesishazardous.Toavoidshock
hazard,disconnectthecablesbeforeopeningthecoverofthisslot.
Attention:BeforeyoustartinstallingawirelessWANcard,touchametaltableoragroundedmetalobject.
Thisactionreducesanystaticelectricityfromyourbody.Thestaticelectricitycoulddamagethecard.
YourcomputermightbeequippedwithawirelessWANcard.ToreplacethewirelessWANcard,doing
thefollowing:
1.Turnoffthecomputer;thendisconnecttheacpoweradapterandallcablesfromthecomputer.Wait
threetoveminutestoletthecomputercool.
2.Closethecomputerdisplay,andturnthecomputerover.
3.Removethebattery.See“Replacingthebattery”onpage69.
4.Loosenthescrew1,andthenremovethecover2.
Chapter6.Replacingdevices95