2. Remove the 2 Phillips PM 4.0 millimeter screws (2), and then remove the rear speakers (3).
USB/Audio board
Description Spare part number
USB/Audio board (includes digital media card reader) 689947-001
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 51).
5. Remove the base enclosure (see
Base enclosure on page 27).
6. Disconnect the battery cable (see
Battery on page 29).
Remove the USB/Audio board:
1. Disconnect the left front speaker cable (1).
2. Disconnect the right front speaker cable (2).
3. Disconnect the fan cable (3).
4. Disconnect the rear speaker cable (4).
5. Disconnect the 3 Phillips PM 4.5 millimeter screws securing the USB/Audio board (5).
Component replacement procedures 43
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