HP 321 - Notebook PC Maintenance And Service Manual page 111

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
5. Remove the service door (see
6. Remove the hard drive (see
7. Remove the optical drive (see
8. Remove the fan (see
9. Remove the palm rest (see
10. Remove the keyboard (see
11. Remove the top cover (see
12. Remove the system board
Remove the audio board from 39.6-cm (15.6-in) computers:
1. Position the computer right-side up with the front toward you.
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.
Battery on page 49).
Service door on page
Hard drive on page
Optical drive on page
Fan on page 60).
Palm rest on page
Keyboard on page
Top cover on page
(seeSystem board on page
49).
52).
58).
64).
69).
73).
92).
Component replacement procedures 101