Sony VAIO PCV-R553DS Reference Manual page 39

Removing, Installing, and Replacing Components
5
Reach inside the chassis and push down and out on the two flat
plastic tabs (1 in diagram) at the bottom of the chassis to release the
bottom end of the front panel.
2
1
Front panel
6
Pull out the top end of the front panel to remove it.
If the top end of the front panel does not come out, reach inside the chassis and push
on the round plastic tabs (2 in diagram) located beneath the diskette drive. This should
release the top end of the front panel enough to remove the panel.
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KY0091.VSD