HP TouchSmart IQ520 - Desktop PC Manual page 58

10 Replace the nine screws that secure the back cover to the computer. Four of the screws are located
along the bottom edge of the back cover, two are located on the sides of the optical drive, and three
are located in the connector area.
CAUTION: You must replace the screws on each side of the optical disc drive to ensure that the
drive slot is aligned properly with the back cover.
11 Replace the optical disc drive cover by aligning the tabs on the bottom edge of the optical drive cover
with the hole on the computer, and then snapping the top edge into place.
12 Follow the steps in "Closing the HP TouchSmart PC" on page 23.
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Upgrading and Servicing Guide