ThinkPad T420s - Page 91

Note:Inmodelswiththefingerprintreader,thesensorisattachedtothepalmrestFRU.Ifthefingerprint
readerisdefective,youcanreplacethepalmrestbyfollowingtheproceduresinthissection.The
replacementproceduresarethesameforapalmrestwithorwithoutafingerprintreader.
Removalstepsofpalmrestorpalmrestwithfingerprintreader
1
1
1
1
1
3
1
2
1
1
1
1
1
1
2
1
StepScrew(quantity)Color
Torque
1
M2×5mm,flat-head,nylon-coated(13)
Black0.181Nm
(1.85kgf-cm)
2
M2.5×5mm,flat-head,nylon-coated(2)
Black0.181Nm
(1.85kgf-cm)
3
M2×3mm,flat-head,nylon-coated(1)Silver
0.181Nm
(1.85kgf-cm)
4
4
4
StepScrew(quantity)Color
Torque
4
M2×5mm,flat-head,nylon-coated(3)
Black0.181Nm
(1.85kgf-cm)
Chapter8.RemovingandreplacingaFRU85