USB board
Description Spare part number
USB board (includes cable) 680558-001
Before removing the USB board, follow these steps:
1. Shut down the computer.
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 38).
5. Remove the service door (see
Service door on page 39).
6. Remove the optical drive (see
Optical drive on page 40).
7.
Remove the hard drive (see
Hard drive on page 43).
8. Remove the keyboard (see
Keyboard on page 50).
9. Remove the top cover (see
Top cover on page 53).
Remove the USB board:
1. If not released already, release the ZIF connector (1) to which the USB board cable is connected,
and then disconnect the USB board cable from the system board.
2. Pry the clip (2) that secures the USB board to the base enclosure.
3. Remove the USB board and cable by lifting straight up (3).
72 Chapter 4 Removal and replacement procedures ENWW
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