Lenovo ThinkPad Edge E135 Hardware Maintenance Manual - Page 76

System board assembly, 1050 PCI Express Mini Card for wireless LAN

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Removal steps of CRT board assembly 23 3 4 1 2 Step 3 Screw (quantity) M2 × 3 mm, wafer-head, nylon-coated (2) Color Black Torque 0.392 Nm (4 kgfcm) When installing: Ensure that the connector is attached firmly to the system board. 1130 System board assembly Important notices for handling the system board: When handling the system board, bear the following in mind: • The system board has an accelerometer, which can be broken if several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as six inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6,000 G's of shock. • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. • If a system board is dropped, be sure to document the drop in any reject report, and replace the system board. • Avoid rough handling of any kind. • At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface. For access, remove these FRUs in order: • "1010 Battery pack" on page 54 • "1020 Bottom slot cover" on page 55 • "1040 Hard disk drive or solid-state drive" on page 57 • "1050 PCI Express Mini Card for wireless LAN" on page 59 • "1060 PCI Express Half Mini Card for wireless WAN or mSATA solid-state drive" on page 61 70 Hardware Maintenance Manual

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Removal steps of CRT board assembly
2
1
4
3
3
Step
Screw (quantity)
Color
Torque
3
M2 × 3 mm, wafer-head, nylon-coated (2)
Black
0.392 Nm
(4 kgfcm)
When installing:
Ensure that the connector is attached firmly to the system board.
1130 System board assembly
Important notices for handling the system board:
When handling the system board, bear the following in mind:
•
The system board has an accelerometer, which can be broken if several thousands of G-forces are applied.
Note:
Dropping a system board from a height of as little as six inches so that it falls flat on a hard bench can subject
the accelerometer to as much as 6,000 G's of shock.
•
Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
•
If a system board is dropped, be sure to document the drop in any reject report, and replace the system board.
•
Avoid rough handling of any kind.
•
At every point in the process, be sure not to drop or stack the system board.
•
If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated
conductive surface.
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 54
•
“1020 Bottom slot cover” on page 55
•
“1040 Hard disk drive or solid-state drive” on page 57
•
“1050 PCI Express Mini Card for wireless LAN” on page 59
•
“1060 PCI Express Half Mini Card for wireless WAN or mSATA solid-state drive” on page 61
70
Hardware Maintenance Manual