Lenovo ThinkPad A21e Hardware Maintenance Manual for ThinkPad A22m (wireless m - Page 99

CPU socket and CPU, 1170 Upper shield

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Removing and replacing a FRU 1190 CPU socket and CPU For access, remove these FRUs, in order: v "1010 Battery pack" on page 58 v "1020 DIMM" on page 59 v "1050 Hard-disk drive or RF ID adapter" on page 64 v "1060 Ultrabay 2000 device" on page 66 v "1070 Dummy card" on page 68 v "1080 Keyboard" on page 69 v "1090 Keyboard CRU insulator" on page 72 v "1100 Hinge cover and clear sheet icon" on page 73 v "1110 Keyboard bezel and speaker" on page 74 v "1120 Speaker cable" on page 77 v "1130 Wireless PC Card and sub card" on page 78 v "1140 PC Card slot assembly" on page 87 v "1150 Fan assembly" on page 89 v "1160 Diskette drive" on page 91 v "1170 Upper shield" on page 93 1 A a b c 2 3 Rotate the screw head (A) 180° in the direction of the arrow a to release the lock; then remove the CPU. Step 1 Screw (quantity) M2.5 × 15 mm, nylon-coated (3) Torque 0.392 Nm (4 kgfcm) When installing the CPU, do as shown in the figure. v Rotate the screw head (A) 180° in the direction of the arrow b to lock the CPU. v When attaching the CPU to the socket, do as shown in step c . ThinkPad A22m wireless models 95

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1190 CPU socket and CPU
For access, remove these FRUs, in order:
v
“1010 Battery pack” on page 58
v
“1020 DIMM” on page 59
v
“1050 Hard-disk drive or RF ID adapter” on page 64
v
“1060 Ultrabay 2000 device” on page 66
v
“1070 Dummy card” on page 68
v
“1080 Keyboard” on page 69
v
“1090 Keyboard CRU insulator” on page 72
v
“1100 Hinge cover and clear sheet icon” on page 73
v
“1110 Keyboard bezel and speaker” on page 74
v
“1120 Speaker cable” on page 77
v
“1130 Wireless PC Card and sub card” on page 78
v
“1140 PC Card slot assembly” on page 87
v
“1150 Fan assembly” on page 89
v
“1160 Diskette drive” on page 91
v
“1170 Upper shield” on page 93
1
a
2
3
c
b
A
Rotate the screw head (
A
) 180° in the direction of the
arrow
±a²
to release the lock; then remove the CPU.
Step
Screw (quantity)
Torque
±1²
M2.5 × 15 mm, nylon-coated (3)
0.392 Nm
(4 kgfcm)
When installing the CPU, do as shown in the figure.
v
Rotate the screw head (
A
) 180° in the direction of the
arrow
±b²
to lock the CPU.
v
When attaching the CPU to the socket, do as shown in
step
±c²
.
Removing and replacing a FRU
ThinkPad A22m wireless models
95