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10. Reinstall the battery. For information about how to reinstall the battery, refer to “Replacing the battery”
on page 75.
11. Turn the computer over again. Connect the ac power adapter and cables to the computer; then turn it on.
Installing and replacing the PCI Express Mini Card for wireless WAN
connection
Some ThinkPad models have a PCI Express Mini Card slot for connection to a wireless WAN. To replace the
PCI Express Mini Card with a new one, read the following prerequisites.
Prerequisites for the procedure
DANGER
During electrical storms, do not connect the cable to or disconnect it from the telephone outlet
on the wall.
DANGER
Electric current from power, telephone, and communication cables is hazardous. To avoid shock
hazard, disconnect the cables before opening the cover of this slot.
Attention: Before you start installing a PCI Express Mini Card, touch a metal table or a grounded metal
object. This action reduces any static electricity from your body. The static electricity could damage the card.
Before you start, print these instructions.
If a Wireless WAN is available in your computer, to replace the PCI Express Mini Card, do as follows:
1. Turn off the computer; then disconnect the ac power adapter and all cables from the computer. Wait for
a few minutes, till the inside of the computer cools, before you start the following procedures.
2. Close the computer display, and turn the computer over.
3. Remove the battery. For information about how to remove the battery, refer to “Replacing the battery”
on page 75.
4. Loosen the screws 1 , and then remove the cover 2 .
Chapter 6. Replacing devices 91