Dell Precision 620 - Manual (Page 3)

Restarting the System
To restart the system and reset the chassis intrusion detector, perform the following steps:
1. Replace the computer cover and reconnect the computer and peripherals to their power sources and turn them on.
ALERT! Cover was previously removed.
2. To reset the chassis intrusion detector, enter System Setup, select System Security, and reset Chassis Intrusion to Enabled, Enabled-
Silent, or Disabled.
Computer Cover
Figure 1. Padlock Ring Release
To remove the computer cover, perform the following steps:
1. Turn off your computer and peripherals, and observe the Caution for Your Personal Safety and Protection of the Equipmentdescribed in
" Precautionary Measures ."
2. If you have installed a padlock through the padlock ring on the back panel, remove the padlock.
3. Face the back of the computer and slide the upper half of the padlock ring to the left to unlock the cover release mechanism (see Figure 1 ).
4. Face the left side cover and press the release button (located at the bottom-left corner of the front panel) (see Figure 2 ).
2. Disconnect the computer and peripherals from their AC power sources. Also, disconnect any telephone or telecommunication lines
from the computer. Doing so reduces the potential for personal injury or shock.
3. To avoid possible damage to the system board, unplug the computer system and wait 15 to 30 seconds before removing a
component from the system board or disconnecting a peripheral from the computer.
4. Wear a wrist grounding strap, and clip it to an unpainted metal surface, such as the padlock loop on the back of the chassis. If a wrist
grounding strap is not available, touch any unpainted metal surface on the back of the computer or on the computer chassis, such as
the power supply, to discharge any static charge from your body before touching anything inside the computer. While you work,
periodically touch an unpainted metal surface on the computer chassis to dissipate any static electricity that might harm internal
components. Also avoid touching components or contacts on a card and avoid touching pins on a chip.
5. Verify that the standby power light-emitting diode (LED) is off —wait 15 to 30 seconds for it to go out (see Figure 28 ).
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 the network administrator for information on
resetting the chassis intrusion detector.
1 Security cable slot
2 Padlock ring