Device Installation Sequence - HP Deskpro EN Supplementary Manual

Device Installation
Sequence
It is very important that you follow this sequence of steps to
ensure the proper installation of any optional equipment:
1. If you have locked the Smart Cover Lock, use
Computer Setup to unlock it. For more information
about Computer Setup, refer to the Software Reference
Guide.
2. Remove any diskette or compact disc from the computer.
3. Turn off the computer and any devices connected to it.
4. Disconnect the power cord from the power outlet and then from
the computer.
5. Disconnect the keyboard, monitor, and other external devices
connected to the computer.
During disassembly, label each external device cable as
you remove it, noting its position and routing. Keep all
screws with the units removed.
WARNING:
To reduce the risk of personal injury from electrical
!
shock and/or hot surfaces, be sure to disconnect the power cord
from the power outlet, and allow the internal system components
to cool before touching.
WARNING:
To reduce the risk of electrical shock, fire, or damage
!
to the equipment, do not plug telecommunications/telephone
connectors into the network interface controller (NIC) receptacles.
CAUTION:
Before servicing the computer, be sure that no green
lights are illuminated on the system board.
CAUTION:
When the unit is plugged in, the power supply always
has 5 V applied to the system board even when the unit is turned
off. Failure to disconnect the power cord can result in damage to
the system.
CAUTION:
Static electricity can damage the electronic
components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of
static electricity by briefly touching a grounded metal object. Refer
to the Safety, Care & Regulatory Information guide for more
information.
6. Open the computer by removing its cover. Refer to
"Removing the Computer Cover" in this chapter for
instructions.
Guide to Features & Upgrades 3-5