Dell Precision 220 - Manual (Page 7)

To remove the expansion-card guide, complete the following steps:
1. Remove the hard-disk drive bracket .
2. Face the computer from the front.
From the outside of the chassis, press in with your fingers on the two tabs on the left side of the expansion-card guide (see
Figure 8 ). This
will release the left tabs of the card guide from the chassis.
3. Rotate the released side of the card guide away from the chassis.
The left side of the card guide will swing away from the chassis. With the left side of the card guide away from the chassis, you can then pull
the card guide back and out of the chassis, which releases the two right tabs.
Control Panel
Figure 9. Control Panel Removal
To remove the control panel, perform the following steps:
1. Disconnect the control-panel ribbon cable from the PANEL connector on the system board (see Figure 21 or the internal service label for the
location of the PANEL connector).
2. Remove the hard-disk drive bracket .
3. Remove the expansion-card guide .
4. Feed the control-panel ribbon cable through the opening on the floor of the chassis and the opening in the wall of the chassis.
5. Disconnect the speaker and chassis intrusion switch connections.
6. Remove the mounting screw.
1 Left tabs (2)
2 Right tabs (2)
1 Guide pin
2 Alignment hole
3 Control panel
4 Mounting screw