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Chassis Intrusion Switch

Dell™ OptiPlex™ GX270 Service Manual

  Removing the Chassis Intrusion Switch

  Replacing the Chassis Intrusion Switch

  Resetting the Chassis Intrusion Detector

CAUTION: Before you begin any of the procedures in this section, follow the steps in "Safety Instructions."

NOTICE: Before you disconnect a device from the computer or remove a component from the system board, verify that the standby power light on the system board has turned off. To locate the light, see "System Board."

1. Shut down the computer through the Start menu.
   
   
2. Ensure that your computer and attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your computer, turn them off now.
   
   

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

3. Disconnect any telephone or telecommunication lines from the computer.
   
   
4. Disconnect your computer and all attached devices from their electrical outlets, and then press the power button to ground the system board.
   
   
5. Remove the computer stand, if it is attached.
   
   

CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.

6. Open the computer cover.
   
   

NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back of the computer. While you work, periodically touch an unpainted metal surface to dissipate any static electricity that could harm internal components.

1. Disconnect the chassis intrusion switch cable from the control panel on the front of the computer.
   
   

Note the routing of the chassis intrusion cable as you remove it from the chassis. Chassis hooks may hold the cable in place inside the chassis.

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

Small Form-Factor Computer

Small Desktop Computer

Small Mini-Tower Computer

1. Slide the chassis intrusion switch into its slot and reconnect the cable to the connector on the control panel.
   
   
2. Close the computer cover.
   
   
3. Attach the computer stand, if it is used.
   
   

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

4. Connect your computer and devices to electrical outlets, and turn them on.
   
   

1. Enter system setup by pressing <F2> during the computer's start-up.
   
   

NOTE: For instructions on using system setup, see the User's Guide.

2. Under the System Security tab, reset the Chassis Intrusion option by pressing the left- or right-arrow key to select Reset. Change the setting to Enabled, Enabled-Silent, or Disabled.
   
   

NOTE: The default is Enabled-Silent.

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

3. Press <Alt><b> to restart the computer and implement your changes.
   
   

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