1170 System Board - Lenovo ThinkPad S540 Hardware Maintenance Manual

Step Screw (quantity)
9
M2 × 3 mm, flat-head, nylon-coated (2)

1170 System board

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 0.15 m (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:
• "1020 Base cover" on page 60
• "1040 Hard disk drive, hybrid drive, or solid-state drive" on page 64
• "1060 Wireless LAN card" on page 67
• "1070 M.2 solid-state drive or wireless WAN card" on page 68
• "1050 Memory module" on page 66
• "1030 Battery pack" on page 62
• "1090 Coin-cell battery" on page 71
• "1110 Thermal fan assembly" on page 73
• "1100 Hard disk drive card, , hybrid drive card, or solid-state drive card" on page 72
9
9
10
Color
Black
.
Chapter 9 Removing or replacing a FRU
Torque
0.181 Nm
(1.85 kgf-cm)
81