Removing The Chassis Intrusion Switch - Dell OptiPlex 270 Service Manual

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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

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

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.