USB board
Description Spare part number
USB board L37372-001
USB board cable L37371-001
Before removing the USB board, follow these steps:
1. Turn o the computer. If you are unsure whether the computer is o or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2. Disconnect the power from the computer by rst unplugging the power cord from the AC outlet, and
then unplugging the AC adapter from the computer.
3. Disconnect all external devices from the computer.
4. Remove the bottom cover (see Bottom cover on page 25).
5. Disconnect the battery (see Battery on page 27).
Remove the USB board:
1. Disconnect the cable from the ZIF connector on the USB board (1).
2. Remove the four Phillips M2.0×2.5 screws (2) that secure the board to the computer.
3. Remove the board from the computer (3).
Reverse this procedure to install the USB board.
34 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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