HP Integrity rx8640, HP 9000 rp8440 Server User Service Guide

Communications Interference
HP system compliance tests are conducted with HP supported peripheral devices and shielded
cables, such as those received with the system. The system meets interference requirements of all
countries in which it is sold. These requirements provide reasonable protection against interference
with radio and television communications.
Installing and using the system in strict accordance with HP instructions minimizes the chances that
the system will cause radio or television interference. However, HP does not guarantee that the
system will not interfere with radio and television reception.
Take these precautions:
• Use only shielded cables.
• Install and route the cables according to the instructions provided.
• Ensure that all cable connector screws are firmly tightened.
• Use only HP supported peripheral devices.
• Ensure that all panels and cover plates are in place and secure before system operation.
Electrostatic Discharge
CAUTION: Observe all electrostatic discharge (ESD) safety precautions before attempting these
procedures. Failure to follow ESD safety precautions can result in damage to the server.
CAUTION: Connect to ground with a wrist strap. You can connect to any grounded metal assembly
in the cabinet. Both you and the electronic devices must be grounded to avoid static discharges
that can cause damage.
HP systems and peripherals contain assemblies and components that are sensitive to electrostatic
discharge (ESD). Carefully observe the precautions and recommended procedures in this document
to prevent component damage from static electricity.
Take these precautions:
• Prepare an ESD-safe work surface large enough to accommodate the various assemblies
handled during the upgrade. Use a grounding mat and an anti-static wrist strap, such as those
included in the ESD Field Service Kit (9300–1609).
• The anti-static bag cannot function as a static dissipating mat. Do not use the anti-static bag
for any other purpose than to enclose a product.
• Treat all assemblies, components, and interface connections as static-sensitive.
• When unpacking cards, interfaces, and other accessories that are packaged separately from
the system, keep the accessories in the conductive plastic bags until you are ready to install
them.
• Avoid working in carpeted areas, and keep body movement to a minimum while installing
accessories.
Powering Off Hardware Components and Powering On the Server
When you remove and replace hardware, you might need to power off hardware components as
part of the remove and replace procedure.
This section gives details on how to power the hardware components off and on.
Powering Off Hardware Components
To power off individual components or the entire cabinet:
1. Log in to the management processor (MP) of the server.
134 Removing and Replacing Components