Replacing The Wlan Module - HP EliteDesk 800 Hardware Reference Manual

Replacing the WLAN module

1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB flash drive, from the computer.
3. Turn off the computer properly through the operating system, then turn off any external devices.
4. Disconnect the power cord from the AC outlet and disconnect any external devices.
CAUTION:
the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to
the internal components of the computer.
5. Remove the computer access panel.
For instructions, see
WARNING!
to cool before you touch them.
6. Rotate the hard drive latch up and out (1) to disengage the hard drive from the cage.
7. Slide the drive back until it stops, and then lift the drive up and out of the cage (2).
8. If your model is an EliteDesk 800 65W, remove the secondary fan under the hard drive.
a. Disconnect the fan plug from the system board (1).
b. Remove the three screws securing the secondary fan (2).
Regardless of the power-on state, voltage is always present on the system board as long as
Removing the computer access panel on page
To reduce risk of personal injury from hot surfaces, allow the internal system components
12.
Replacing the WLAN module 27