Dell Vostro 2421 (Early 2013) - Manual (Page 27)

Installing the Speakers
1. Place the speaker assembly in its slot and route the cables through the channels.
2. Install:
a) system board
b) wireless mini-card
c) palmrest
d) keyboard
e) optical-drive assembly
f) hard-drive assembly
g) memory model
h) access panel
i) battery
3. Follow the procedures in After Working Inside Your Computer .
Removing the Display Assembly
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove:
a) battery
b) access panel
c) memory module
d) hard-drive assembly
e) optical-drive assembly
f) keyboard
g) palmrest
h) system board
3. Un-route the display cable from its channels.
4. Remove the screws that secure the display assembly to the computer
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