NOTE: This section applies only to device models with WWAN capability.
NOTE: If there is a SIM inserted in the SIM slot, it must be removed before disassembling the computer. Be sure that the SIM is reinserted in the SIM slot after reassembling the computer.
Before removing the SIM, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
4.Remove the battery (see Battery on page 36).
Remove the SIM:
1.Press in on the SIM (1). (The module is partially ejected from the SIM slot.)
2.Remove the SIM (2) from the SIM slot.
Reverse this procedure to insert the SIM.
Component replacement procedures 37