USB board
Description Spare part number
USB board L22538-001
USB board cable L22522-001
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 unplugging the power cord from the computer.
3. Disconnect all external devices from the computer.
4. Remove the optical drive (see Optical drive on page 32).
5. Remove the bottom cover (see Bottom cover on page 36).
6. Remove the battery (see Battery on page 38).
Remove the USB board:
1. Disconnect the cable from the ZIF connector on the USB board (1).
2. Remove the two Phillips M2.0×3.0 screws (2), and then remove the board from the computer (3).
Reverse this procedure to replace the USB board.
Component replacement procedures 49