Installing System Components 101Installing the Control Panel Assembly1 Insert the control panel assembly display module into the chassis cutout and secure with the two Torxscrews.2 Affix the control panel label to the display module.3 Install the control panel board in the system chassis and secure with the three Phillips screws. SeeFigure 3-27.4 Connect the display module cable to the control panel board. See Figure 3-27.5 Connect the control panel cable to the control panel board. See Figure 3-27.6 Close the system. See "Closing the System" on page 48.7 If applicable, reinstall the top panel on your tower system:a Place the top panel on top of the system and offset slightly so that the panel can engage the chassishooks.b Slide the panel forward to closed position.c Install the retaining screw to the top back of the system.8 Reconnect the system to the power source and turn on the system and attached peripherals.9 Replace the front bezel, if removed. See "Installing the Bezel" on page 47.Hard-Drive Activity Indicator LEDRemoving the Hard-Drive Activity Indicator LEDCAUTION: Many repairs may only be done by a certified service technician. You should only performtroubleshooting and simple repairs as authorized in your product documentation, or as directed by the online ortelephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by yourwarranty. Read and follow the safety instructions that came with the product.1 Remove the front bezel, if attached. See "Removing the Bezel" on page 46.2 Turn off the system and attached peripherals, and disconnect the system from the electrical outlet andperipherals.3 Open the system. See "Opening the System" on page 48.4 Remove the device located in the top peripheral bay. See "Removing an Internal SCSI Tape BackupUnit" on page 68, "Removing an Internal SATA Tape Backup Unit" on page 71, or "Removing anOptical Drive" on page 73.5 Disconnect the hard-drive activity indicator LED.Reach through the open peripheral bay, and disconnect the LED from the chassis.6 Remove the center fan bracket. See "Removing the Center Fan Bracket" on page 82.7 Disconnect the hard-drive activity indicator LED cable from the system board.book.book Page 101 Tuesday, September 1, 2009 4:19 PM
