Lenovo L420, L421, L520 manual Removal steps of keyboard bezel

•“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

2a and 3a .

and

3a

are only for ThinkPad L520 models. For ThinkPad L420 and L421 models, skip steps

31

3

2

22a

2

2a

2a

1

3 3

Step	Screw (quantity)	Color	Torque
	M2.5 × 6.5 mm, flat-head, nylon-coated (2)	Black	0.392 Nm
1
			(4 kgfcm)
	M2 × 3 mm, flat-head, nylon-coated (3)	Black	0.181 Nm
2
			(1.85 kgfcm)
	M2 × 3 mm, flat-head, nylon-coated (2)	Black	0.181 Nm
2a
			(1.85 kgfcm)
	M2 × 5 mm, flat-head, nylon-coated (3)	Black	0.181 Nm
3
			(1.85 kgfcm)
	M2 × 5 mm, flat-head, nylon-coated (1)	Black	0.181 Nm
3a
			(1.85 kgfcm)

86Hardware Maintenance Manual