User Service Guide, Third Edition - HP Integrity cx2620 Server

Removing and Replacing the Fan Control Board
Remove and replace the fan control board with the server powered off and with the top cover
and the front grill removed. This circuit board also provides cable distribution to various elements
in the chassis, as it is the termination point for seven different connectors.
WARNING! Ensure that the system is powered off and all power sources are disconnected
from the server prior to removing or installing server hardware.
Voltages are present at various locations within the server whenever a DC power source is
connected. This voltage is present even when the main power switch is turned off.
Failure to observe this warning can result in personal injury or damage to equipment.
CAUTION: Observe all ESD safety precautions while performing this procedure. Failure to
follow ESD safety precautions can result in damage to the server.
Removing the Fan Control Board
To remove the fan control board, follow these steps:
1. If rack-mounted, extend the server out from the rack until it stops. See “Installing Components
When the Server Is in a Rack” (page 154).
2. Power off the server. Disconnect all external cables.
3. Remove the server from the rack and place it on an ESD-protected work surface. See
“Removing the Server From a Rack” (page 155).
4. Remove the top cover and front grill. See “Removing the Front Grill” (page 64) and to
“Removing and Replacing the Top Cover” (page 158).
5. Remove the PCI-X airflow guide. See “Removing the PCI-X Airflow Guide” (page 177).
6. Remove the DVD/optical drive. See “Removing the Optical Drive” (page 183).
7. Locate the fan control board (Figure 6-25).
188 Removing and Replacing Components