Figure 108. Installing the Wi-Fi card
Figure 109. Connecting the Wi-Fi antenna cables
Figure 110. Installing the Wi-Fi card shield
9. Reinstall the removed parts.
10. Place the computer in an upright position.
11. If a locking device is available, use it to lock the computer.
12. Reconnect the external cables and power cords to the corresponding connectors on the computer.
Coin-cell battery
Prerequisite
Before you start, read Chapter 1 “Important safety information” on page 1 and print the following
instructions.
DANGER
If the coin-cell battery is incorrectly replaced, there is danger of an explosion. The coin-cell battery
contains a small amount of harmful substance. To avoid possible injury:
• Replace only with a battery of the type recommended by Lenovo.
• Keep the battery away from fire.
• Do not expose it to excessive heat.
• Do not expose it to water or rain.
• Do not short-circuit it.
• Do not drop, crush, puncture the battery, or make it subject to strong forces. Battery abuse or
mishandling can cause the battery to overheat, which can cause gasses or flame to "vent" from
the battery or coin-cell battery.
Note: To dispose of the coin-cell battery, refer to “Lithium coin-cell battery notice” in the Safety and
Warranty Guide.
110
M70a and M90a Hardware Maintenance Manual
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