Back to Contents PageChassis Intrusion SwitchDell Precision™ WorkStation 330 Systems Service ManualDesktop ChassisMini Tower ChassisDesktop Chassisl Removing the chassis intrusion switchl Replacing the chassis intrusion switchRemoving the Chassis Intrusion Switch (Desktop Chassis)1. Turn off the computer and peripherals, disconnect them from their electrical outlets, wait at least 5 seconds, and then remove the computer cover.2. Remove the hard-drive bracket.3. Remove all expansion cards.4. Remove the expansion-card guide.5. Disconnect the chassis intrusion switch cable from the control-panel connector (ALERT). To locate this connector, see "Control Panel Components."6. Feed the chassis intrusion switch cable through the routing hole in the front wall of the chassis (see the following figure).7. From inside the chassis, slide the chassis intrusion switch toward the left side wall of the chassis to release it from the chassis.8. Lift the chassis intrusion switch and switch cable away from the chassis.Removing the Chassis Intrusion Switch (Desktop Chassis)Replacing the Chassis Intrusion Switch (Desktop Chassis)To replace the chassis intrusion switch, perform the removal procedure in reverse.CAUTION: Before you perform this procedure, see "Precautionary Measures."NOTICE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power indicator on thesystem board has turned off. To locate this indicator, see "System Board Components" or "Interior Service Label."NOTE: When mounting the chassis intrusion switch in the clip in the front wall of the chassis, ensure that the sensor cable is oriented toward the left side wall ofthe chassis.