HP 320 - Notebook PC Maintenance And Service Manual page 114

Compaq 320, 321, 420, 421, 620 and 621 notebook pcs hp 420 and 620 notebook pcs - maintenance and service guide
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2.
Remove the Phillips PM2.0×3.0 screw (1) that secures the audio board to the base enclosure and
then remove the audio board (2).
Remove the audio board from 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers:
1.
Release the latch (1) that secures the board to the base enclosure.
2.
Lift the audio board (2) from the base enclosure.
Reverse this procedure to install the audio board.
106 Chapter 4 Removal and replacement procedures

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