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2. Remove the security bracket (2).
USB/Audio board
Description Spare part number
USB/Audio board 686584–001
Before removing the USB/Audio 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. Remove the display panel (see
Display panel on page 31).
5. Remove the base enclosure (see
Base enclosure on page 33).
6. Disconnect the battery cable (see
Battery on page 35).
7. Remove the subwoofer (see
Subwoofer on page 54).
8. Remove the security bracket (see
Security bracket on page 55).
56 Chapter 4 Removal and replacement procedures