Lenovo IdeaPad U310/U410 Hardware Maintenance Manual
Figure 6. Removal steps of fan assembly and heat sink assembly (continued)
U310: Remove four screws
U410: Remove six screws
46
Step
Screw (quantity)
b
M2.5 × 3.5 mm, flat-head, nylok-coated
(1)
b
M2.5 × 4.0 mm, flat-head, nylok-coated
(1)
b
c
and screw
.
b
c
and screw
.
b
b
b
b
b
c
b
b
b
b
b
c
Color
Torque
Silver
2.5 kgfcm
Silver
2.5 kgfcm