Owners Manual

124 Installing System Components
Control Panel Assembly
NOTE: The LCD control panel assembly consists of two separate modules—the
display module and the control panel circuit board. Use the following instructions to
remove and install either module.
Removing the Control Panel Board Assembly and the Control Panel
Display Module
CAUTION: Many repairs may only be done by a certified service technician. You
should only perform troubleshooting and simple repairs as authorized in your
product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered
by your warranty. Read and follow the safety instructions that came with the
product.
1 If applicable, remove the front bezel. See "Removing the Front Bezel" on
page 75.
2 Turn off the system and attached peripherals, and disconnect the system
from the electrical outlet and peripherals.
3 Open the system. See "Opening the System" on page 76.
4 Disconnect the control panel cable at the back of the control panel board.
See Figure 3-21.
CAUTION: Do not pull on the cable to unseat the connector. Doing so can damage
the cable.
5 Press the metal tabs on the ends of the cable connector.
6 Gently work the connector out of the socket.
7 Remove the USB connector cable, the display module cable and the power
cable.
8 Remove the two screws that secure the control panel board to the system
chassis and remove the board.
9 Remove the two screws that secure the display module to the system
chassis and remove the display module from the chassis cutout.
book.book.book Page 124 Tuesday, September 7, 2010 8:45 PM