ThinkPad T420s - Page 102

5
Instep5,removethesystemboardwithfanassemblytogetherfromthebasecoverassembly.
Turnthesystemboardover,andthendisconnectthefanassemblyfromthesystemboard.
8
6
7
StepScrew(quantity)Color
Torque
7
M2×5mm,big-head,nylon-coated(4)
Black0.181Nm
(1.85kgf-cm)
Wheninstalling:
•Beforeyouattachthefanassemblytothecomputer,applythermalgrease,atanamountof0.2grams,
onthepartmarkedaasinthefollowingfigure.Eithertoomuchortoolessapplicationofgreasecan
causeathermalproblemduetoimperfectcontactwithacomponent.Youneedtopeelthethinfilm
offfromtherubber
b.
96HardwareMaintenanceManual