Tablet User Manual

Table22.RemovalstepsofDC-inconnector,basecover,fan,digitizerpencase,andpenswitchassembly(continued)
StepScrew(quantity)Color
Torque
11
M2×3.5mm,at-head,nylon-coated(1)Silver
0.181Nm
(1.85kgfcm)
Wheninstalling:
•Beforeyouattachthefanassemblytothecomputer,applythermalgrease,atanamountof0.2grams,onthe
partmarkedaasinthefollowinggure.Eithertoomuchortoolessapplicationofgreasecancauseathermal
problemduetoimperfectcontactwithacomponent.Y ouneedtopeelthethinlmofffromtherubberb.
•MakesurethattheDC-inconnector,thefanconnector,andthepenswitchconnectorareattachedtothesystem
boardrmly.
a
b
a
Applyinglabelstothebasecover:
ThenewbasecoverFRUisshippedwithakitcontaininglabelsofseveralkinds.
Note:IftheWindowsAuthenticationlabel(COA)
2isattachedtoapartthatisreplaced,returntheoldpart
withthelabelattachedtothecustomer,orprovidealettertothecustomerstatingwhatthelabelwas
originallyonthesystemandwhatthelabelpartnumber,serialnumber,andproductkeywere.
Whenyoureplacethebasecover,youneedtoapplythefollowinglabels:
19
Homologationlabel
20
Productlabel
Thefollowinglabelsneedtobepeeledofffromtheoldbasecover,andneedtobeputonthenewbasecover.
1
Chinatelecomlabel
2
WindowsCerticateofAuthenticationlabel(COA)
3
SIMlabel
4
BTYwordlabel
5
Assettag
6
IMEIlabel
7
BrazilWWANlabel
88ThinkPadX220TabletandX220iTabletHardwareMaintenanceManual