132 Installing System Components
10
Enter the correct time and date in the System Setup program's 
Time
 and 
Date
 fields.
11
Exit the System Setup program.
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 installed, remove the optional front bezel. See "Front Bezel (Optional)" 
on page 77.
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 78.
4
Disconnect the control panel cable at the back of the control panel board. 
See Figure 3-24.
  CAUTION: Do not pull on the cable to unseat the connector. Doing so can damage 
the cable. 
a
Press the metal tabs on the ends of the cable connector. 
b
Gently work the connector out of the socket.
c
Remove the USB connector cable, the display module cable and the 
power cable.
5
Remove the two screws that secure the control panel board to the system 
chassis and remove the board.
This completes the removal procedure for the LED control panel.
R310HOM.book  Page 132  Thursday, March 4, 2010  1:03 AM