User Guide - Lenovo E49

Chapter7.Replacingdevices

ThischapterprovidesCRUinstructionsforyourcomputer.

•“Staticelectricityprevention”onpage31

•“Replacingthebattery”onpage31

•“Replacingtheharddiskdrive”onpage32

•“Replacingthekeyboard”onpage34

•“Replacingamemorymodule”onpage37

•“ReplacingthePCIExpressMiniCardforwirelessLAN/WiMAXconnection”onpage38

•“Replacingtheopticaldrive”onpage40

Staticelectricityprevention

Staticelectricity,althoughharmlesstoyou,canseriouslydamagecomputercomponentsandoptions.

Improperhandlingofstatic-sensitivepartscancausedamagetothepart.Whenyouunpackanoption

orCRU,donotopenthestatic-protectivepackagecontainingthepartuntiltheinstructionsdirectyou

toinstallit.

WhenyouhandleoptionsorCRUs,orperformanyworkinsidethecomputer,takethefollowingprecautions

toavoidstatic-electricitydamage:

•Limityourmovement.Movementcancausestaticelectricitytobuilduparoundyou.

•Alwayshandlecomponentscarefully.Handleadapters,memorymodules,andothercircuitboardsbythe

edges.Nevertouchexposedcircuitry.

•Preventothersfromtouchingcomponents.

•Whenyouinstallastatic-sensitiveoptionorCRU,touchthestatic-protectivepackagecontainingthe

parttoametalexpansion-slotcoverorotherunpaintedmetalsurfaceonthecomputerforatleasttwo

seconds.Thisreducesstaticelectricityinthepackageandyourbody.

•Whenpossible,removethestatic-sensitivepartfromthestatic-protectivepackagingandinstallthepart

withoutsettingitdown.Whenthisisnotpossible,placethestatic-protectivepackagingonasmooth,

levelsurfaceandplacethepartonit.

•Donotplacethepartonthecomputercoverorothermetalsurface.

Replacingthebattery

Beforeyoustart,printtheseinstructions.

Note:ThissystemdoesnotsupportbatteriesthatarenotgenuineLenovo-madeorauthorized.Thesystem

willcontinuetoboot,butmaynotchargeunauthorizedbatteries.

Attention:Lenovohasnoresponsibilityfortheperformanceorsafetyofunauthorizedbatteries,and

providesnowarrantiesforfailuresordamagearisingoutoftheiruse.

Toreplacethebatterywithanewone,readthefollowingprerequisites.