Lenovo ThinkPad i Series 172x ThinkPad 390 / i Series 1720 models Hardware Mai - Page 69
cover ASM., can remove the upper cover ASM from the base
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Step Size (Quantity) Head & Color Torque 1 M2 x 4L (3) Flat head, silver 1.6 kgf-cm 2 M2 x 18L (3) Pan head, 1.6 kgf-cm black Note: Make sure you use the correct screw for replacement. 2. Turn the notebook over. Then remove the 4 screws from the base cover. Step Size (Quantity) Head & Color Torque 3 M2.5 x 6L (1) Flat head, black 2.0 kgf-cm 4 M2.5 x 18L Pan head, 2.0 kgf-cm (3) black Note: Make sure you use the correct screw for replacement. 3. Use a flat-bladed screwdriver to remove the latch. 4. Disconnect the cable from the main unit. Now you can remove the upper cover ASM from the base cover ASM. ThinkPad 390/i Series 1700 61
2.
Turn the notebook over. Then remove the 4 screws
from the base cover.
3.
Use a flat-bladed screwdriver to remove the latch.
4.
Disconnect the cable from the main unit. Now you
can remove the upper cover ASM from the base
cover ASM.
Step
Size (Quan-
tity)
Head &
Color
Torque
1
M2 x 4L (3)
Flat head,
silver
1.6 kgf-cm
2
M2 x 18L (3)
Pan head,
black
1.6 kgf-cm
Note:
Make sure you use the correct screw for replacement.
Step
Size (Quan-
tity)
Head &
Color
Torque
3
M2.5 x 6L (1)
Flat head,
black
2.0 kgf-cm
4
M2.5 x 18L
(3)
Pan head,
black
2.0 kgf-cm
Note:
Make sure you use the correct screw for replacement.
ThinkPad 390/i Series 1700
61