SIM module
Description Spare part number
SIM module (includes cable) 577923-001
Before removing the SIM module, follow these steps:
1. Shut down the device. If you are unsure whether the device is off or in Hibernation, turn the device
on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the device.
3. Disconnect the power from the device by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the device.
4. Remove the battery (see
Battery on page 32).
5. Remove the SIM (see
SIM on page 33).
6. Remove the Keyboard (see
Keyboard on page 36).
7. Remove the Hard drive (see
Hard drive on page 39).
Remove the SIM module:
Disconnect the LIF cable (1) from the computer, and remove the SIM module (2).
Reverse this procedure to install the SIM module.
Component replacement procedures 43
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