Lenovo L420 Laptop User Manual


 
“1070 Fan assembly” on page 66
“1110 Wireless WAN slot cover and PCI Express Mini Card for wireless WAN” on page 71
“1110 mSATA solid state drive” on page 73
“1120 Palm rest assembly with cables” on page 74
“1130 PCI Express Mini Card for wireless LAN” on page 78
“1170 Keyboard” on page 83
Table 26. Removal steps of keyboard bezel
Note: Steps 2a and 3a are only for ThinkPad L520 models. For ThinkPad L420 and L421 models, skip steps
2a and 3a .
3
3
1
2
2
2
3
3
1
2a
2a
2a
Step Screw (quantity) Color
Torque
1
M2.5 × 6.5 mm, at-head, nylon-coated (2)
Black 0.392 Nm
(4 kgfcm)
2
M2 × 3 mm, at-head, nylon-coated (3)
Black 0.181 Nm
(1.85 kgfcm)
2a
M2 × 3 mm, at-head, nylon-coated (2)
Black 0.181 Nm
(1.85 kgfcm)
3
M2 × 5 mm, at-head, nylon-coated (3)
Black 0.181 Nm
(1.85 kgfcm)
3a
M2 × 5 mm, at-head, nylon-coated (1)
Black 0.181 Nm
(1.85 kgfcm)
86 Hardware Maintenance Manual