IBM THINKPAD L460, Hardware Maintenance Manual

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Removal steps of the smart-card bracket
1
1
1
1
2
Step Screw (quantity) Color
Torque
1
M2 × 3 mm, flat-head, nylon-coated (4) Black 0.181 Nm
(1.85 kgf-cm)
2
M2 × 5 mm, flat-head, nylon-coated (1) Silver 0.181 Nm
(1.85 kgf-cm)
3
1190 System board and subcards
Important notices for handling the system board
When handling the system board, read the following:
• The system board has an accelerometer, which can be broken when several thousands of G-forces
are applied.
Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench
can subject the accelerometer to as much as 6000 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.
• 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 material.
For access, remove these FRUs in order:
•
“1010 SIM-card tray” on page 62
92
ThinkPad L460 Hardware Maintenance Manual