Removing The Display Board - HP AB464-9003F Service Manual

The display board attaches to an interconnect board that functions as a link between the midplane
board and the display board.
The display board contains the power switch and the following status LEDs:
Power LED
System health LED
Internal health LED
External health LED
Locator LED
For more detailed information about front panel LED behavior, see
(page 134).
The display board includes a USB connector that supports USB 2.0 (480 Mbps).
The diagnostic panel provides failure identification for each component that has a detectable
error associated with it. For more information on the diagnostic panel LEDs, see
"Troubleshooting" (page
WARNING!
disconnected from the server prior to performing this procedure.
Voltages are present at various locations within the server whenever an AC power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION:
follow ESD safety precautions can result in damage to the server.

Removing the Display Board

To remove the display board, follow these steps:
1. Power off the server and disconnect the power cables. See
(page 89).
2. If rack installed, slide the server completely out from the rack. See
from the Rack" (page
3. Remove the top cover. See
4. Remove the air baffle.
5. Disconnect the USB cable from the connector on the display board.
NOTE:
6. Remove the DVD drive. See
7. Locate the knurled thumbscrew behind the DVD drive that holds the display board in place.
8. Turn the thumbscrew counterclockwise until the board releases from the chassis.
9. Remove the top two screws from the right side of the bezel. Pull the bezel out from the
chassis approximately one half inch so that the display board can clear the locator and Power
buttons.
CAUTION:
the USB connector as a handle to remove the display board. Failure to observe these cautions
can result in damage to server components.
240 Removing and Replacing Server Components
134).
Ensure that the system is powered off and all power sources have been
Observe all ESD safety precautions before attempting this procedure. Failure to
176).
"Removing the Top Cover" (page
The USB cable connector is an RJ45 connector; it is not a typical USB connector.
"Removing the DVD Drive" (page
Do not pull the bezel out from the chassis more than one half inch. Do not use
Chapter 5: "Troubleshooting"
Chapter 5:
"Powering Off the Server"
"Extending the Server
178).
202).