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SIM
NOTE: This section applies only to computer models with WWAN capability.
NOTE: The SIM is provided by the end-user as a security measure for the WWAN module. The SIM
should be removed, placed into a static-dissipative container, and then replaced when the computer is
reassembled.
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 35).
5. Remove the service door (see
Service door on page 43).
Remove the SIM:
▲
Push the SIM slightly into the slot to disengage it (1), and then pull it out of the slot (2).
44 Chapter 5 Removal and replacement procedures for Customer Self-Repair parts