HP ProBook 4545s, Руководство по техническому обслуживанию и ремонту

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Audio board
Description Spare part number
Audio board 683475-001
Before removing the 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 battery (see Battery on page 37 ).
5. Remove the following components:
a. Bottom door (see Bottom door on page 38 ).
b. Optical drive (see Optical drive on page 41 ).
c. Hard drive (see Hard drive on page 45 ).
d. Keyboard (see Keyboard on page 47 ).
e. Metal heat shield (see Metal heat shield on page 51 ).
f. Top cover (see Top cover on page 58 )
Remove the audio board:
1. Position the top cover upside-down with the front toward you.
2. Disconnect the audio board cable (1) .
3. Remove the 2 Phillips PM2.5×5.0 screws (2) that secure the audio board to the top cover.
64 Chapter 4 Removal and replacement procedures