Dell OptiPlex GX260N Uživatelská příručka stáhnout pdf (Strana 52)

1. Perform an orderly computer shutdown using the operating system menu.

NOTICE: To disconnect a network cable, first unplug the cable from your computer, and then unplug it from the

network wall jack.

2. Turn off any attached devices and disconnect them from their electrical outlets.

3. Disconnect the computer power cable from the wall outlet, and then press the power button to ground the system

board.

4. Remove the computer stand

, if it is attached.

5. Open the computer cover.

6. Raise the retention arm.

7. Disconnect the cable from the system board connector.

8. Lift and remove the card bracket.

9. If you are removing the card permanently, install a filler bracket in the empty card-slot opening.

If you need a filler bracket, contact Dell.

NOTE: Installing filler brackets over empty card-slot openings is necessary to maintain FCC certification of the

computer. The brackets also keep dust and dirt out of your computer.

10. Lower the retention arm and press it into place.

NOTICE: To connect a network cable, first plug the cable into the network wall jack, and then plug it into the

computer.

11. Close the computer cover, reconnect the computer and devices to their electrical outlets, and turn them on.

After you open and close the cover, the chassis intrusion detector, if enabled, causes the following message to appear

on the screen at the next computer start-up:

ALERT! Cover was previously removed.

12. Reset the chassis intrusion detector

by changing Chassis Intrusion to Enabled or Enabled-Silent.

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Dell OptiPlex GX260N Uživatelská příručka Strana 52