Compaq 321 Compaq 320, 321, 420, 421, 620, 621 Notebook PCs and HP 420, 620 No - Page 7

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Table of contents 1 Product description ...1 2 External component identification ...9 Top Components ...9 TouchPad ...9 Lights ...10 Buttons, switch, and speaker 11 Keys ...12 Front components ...14 Right-side components ...14 Left-side components ...15 Bottom components ...16 Multimedia components ...17 Wireless antennas (select models only 19 Additional hardware components ...20 3 Illustrated parts catalog ...21 Service tag ...21 Computer major components ...23 Display assembly components ...29 Plastics Kit ...30 Cables ...31 Mass storage devices ...33 Miscellaneous parts ...34 Sequential part number listing ...35 4 Removal and replacement procedures ...42 Preliminary replacement requirements 42 Tools required ...42 Service considerations ...42 Plastic parts ...42 Cables and connectors 43 Drive handling 43 vii

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Table of contents
1
Product description
........................................................................................................................................
1
2
External component identification
................................................................................................................
9
Top Components
..................................................................................................................................
9
TouchPad
............................................................................................................................
9
Lights
.................................................................................................................................
10
Buttons, switch, and speaker
.............................................................................................
11
Keys
...................................................................................................................................
12
Front components
..............................................................................................................................
14
Right-side components
.......................................................................................................................
14
Left-side components
.........................................................................................................................
15
Bottom components
...........................................................................................................................
16
Multimedia components
.....................................................................................................................
17
Wireless antennas (select models only)
.............................................................................................
19
Additional hardware components
.......................................................................................................
20
3
Illustrated parts catalog
...............................................................................................................................
21
Service tag
.........................................................................................................................................
21
Computer major components
.............................................................................................................
23
Display assembly components
...........................................................................................................
29
Plastics Kit
..........................................................................................................................................
30
Cables
................................................................................................................................................
31
Mass storage devices
.........................................................................................................................
33
Miscellaneous parts
............................................................................................................................
34
Sequential part number listing
............................................................................................................
35
4
Removal and replacement procedures
.......................................................................................................
42
Preliminary replacement requirements
...............................................................................................
42
Tools required
....................................................................................................................
42
Service considerations
.......................................................................................................
42
Plastic parts
.......................................................................................................
42
Cables and connectors
.....................................................................................
43
Drive handling
...................................................................................................
43
vii