Lenovo E50-80, Hardware Maintenance Manual, Page: 68 / 92

Removal steps of the upper case
Remove eight screws 1 and two screws 2 on the bottom. (E40)
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b
a
a
a
a
a
a
a
a
Remove nine screws 1 and three screws 2 on the bottom. (E50)
a
a
a
a
a
a
a
a
b
b
b
a
Step Screw (quantity) Color Torque
M2.5 × 6mm, flat-headed, nylon-coated (8) (E40) Black 3.0 +/- 0.3kgf-cm
1
M2.5 × 7mm, flat-headed, nylon-coated (9) (E50)
Black
3.0 +/- 0.3kgf-cm
2
M2.0 × 2mm, flat-headed, nylon-coated Black 1.85 +/- 0.15kgf-cm
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Hardware Maintenance Manual