Hardware Upgrades; Warnings And Cautions; Additional Information - HP Pro 3000 MT Hardware Reference Manual

Hardware Upgrades

Warnings and Cautions

Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and
warnings in this guide.
WARNING!
Disconnect the power cord from the wall outlet and allow the internal system components to cool before
touching.
Disconnect the RJ-11 cable to the equipment before removing the enclosure.
Do not plug telecommunications or telephone connectors into the network interface controller (NIC)
receptacles.
Do not disable the power cord grounding plug. The grounding plug is an important safety feature.
Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.
To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation,
setup, posture, and health and work habits for computer users, and provides important electrical and
mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo.
WARNING!
Disconnect power to the equipment before removing the enclosure.
Replace and secure the enclosure before re-energizing the equipment.
CAUTION:
Certified Telecommunication Line Cord.
CAUTION:
above 35°C (120°F).
Extreme heat may damage the equipment.
The unit should be operated under a maximum ambient temperature of 35°C (120°F).
CAUTION:
equipment. Before beginning these procedures, ensure that you are discharged of static electricity by
briefly touching a grounded metal object. See
When the computer is plugged into an AC power source, voltage is always applied to the system board.
You must disconnect the power cord from the power source before opening the computer to prevent
damage to internal components.

Additional Information

For more information on removing and replacing hardware components, desktop management, the
Computer Setup utility, and troubleshooting, refer to the Maintenance and Service Guide (available in
English only) for your computer model at http://www.hp.com.
To reduce the risk of personal injury from electrical shock, hot surfaces, or fire:
Energized and moving parts inside.
To reduce the risk of fire, use only No. 26 AWG or larger (e.g., 24 AWG) UL Listed or CSA
Do not leave this equipment in an unconditioned environment with storage temperatures
Static electricity can damage the electrical components of the computer or optional
Electrostatic Discharge on page 35 for more information.
Warnings and Cautions 1