Dell Precision 620 User Manual download pdf (Page 18)

To remove the chassis intrusion switch and install a replacement, perform the following steps:

1. Disconnect the chassis intrusion switch cable from the control panel (see Figure 25).

Note the routing of the chassis intrusion cable as you remove the cable from the chassis. The cable is routed through an enlarged hole in the

chassis and through a hole in the disk-drive cage door. The chassis intrusion switch is mounted on the left front of the chassis (see Figure

26).

2. Slide the chassis intrusion switch out of its slot on the chassis and carefully remove the switch and its attached cable from the chassis.

3. Install the replacement chassis intrusion switch and cable.

4. Replace the computer cover. Then reconnect your computer and peripherals to their power sources, and turn them on.

ALERT! Cover was previously removed.

5. To reset the chassis intrusion detector, enter System Setup, select System Security, and reset Chassis Intrusion to Enabled, Enabled-

Silent, or Disabled.

Power Supply

To access some components on the system board, you may have to rotate the system power supply out of the way. Use this procedure to rotate

the supply out of the chassis, or to completely remove it.

To rotate or remove the power supply, perform the following steps.

1. Remove the computer cover.

2. To aid in the removal of the power supply, lay the computer on its side.

3. Disconnect the AC power cable from the AC power receptacle on the back of the power supply (see Figure 27).

Chassis intrusion cable connector

Control panel chassis intrusion connector

Enlarged hole for cable

Switch slot

Chassis intrusion switch

CAUTION: Before you remove the computer cover, see "Precautionary Measures."

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be

displayed at the next system start-up:

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the

chassis intrusion detector.

CAUTION: Before you remove the computer cover, see "Precautionary Measures."

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Dell Precision 620 User Manual Page 18