Power connector/SIM board
Description Spare part number
SIM module for use in models without WWAN 779122-001
SIM module for use in models with WWAN 790020-001
Before removing the power connector/SIM board, 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. Disconnect the tablet from the keyboard dock (see
Releasing the tablet from the keyboard dock
on page 25).
5. Remove the tablet cover (see
Tablet cover on page 43).
6. Disconnect the battery cable (see
Battery cable on page 45).
Remove the power connector/SIM board:
1. Disconnect the power connector/SIM board cables from the system board (1)(2).
2. Remove the cable from the clips built into the tablet (3)
3. Remove the Phillips PM2.0×2.0 broadhead screw (4) and the two the Phillips PM2.0×3.0 screws (5) that
secure the board to the tablet.
4. Lift the bracket from atop the connector (6).
50 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts