System power overview, System power overview -2 – HP ProLiant DL740 Server User Manual

Page 169

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Server Power

System Power Overview

The system power in the ProLiant DL740 server does not shut off completely with
the front panel Power On/Standby switch. The two modes of the power switch are on
and standby, rather than on and off. The Standby position removes power from most
of the electronics and the drives, but portions of the power supply, the system
interlock circuitry, and some internal circuitry remain active.

To remove all power from the system completely, you must disconnect all power
cords from the server.

WARNING: To reduce the risk of electric shock or damage to the equipment:

Disconnect power from the system by unplugging all power cords from
the power supplies.

Do not disable the power cord grounding plug. The grounding plug is an
important safety feature.

Plug the power cord into a grounded (earthed) electrical outlet that is
easily accessible at all times.

WARNING: The power supplies in the ProLiant DL740 server produce
hazardous energy levels. The installation of options and the routine
maintenance and service of this product should be performed by individuals
who are knowledgeable about the procedures, precautions, and hazards
associated with equipment containing hazardous energy circuits.

CAUTION: Electrostatic discharge can damage electronic components. Be sure that
you are properly grounded before beginning any installation procedure. Refer to
Appendix B for more information.

NOTE: All ProLiant servers support server management features that provide in-depth
monitoring, analysis, and control of the fault performance and configuration aspects of HP
servers. Refer to the system Documentation CD for information about server management
features, flash ROM, and Insight Manager 7.

7-2

HP ProLiant DL740 Server User Guide

HP CONFIDENTIAL

Writer: Anna Roberts File Name: h-ch7 Server Power.doc

Codename: Expedition Part Number: 270854-002 Last Saved On: 6/17/03 2:15 PM

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