LEDs
The table below shows how to read the status of the PSU
according to LED color. The PSU LEDs are visible on the front of
the Switch and are marked ‘1’ for PSU 1 and ‘2’ for PSU 2.
Further Information
For information about Switch Management, refer to the
documentation supplied with your Switch.
Copyright © 2002, 3Com Technologies. All rights reserved.
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not
be registered in other countries.
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Color
State
PSU LEDs (Front of Switch)
Green
PSU fitted and enabled
Red
PSU fitted and not operational
Red flashing
PSU has shut down due to over-heating
Off
No PSU fitted
PSU LEDs (Module)
Green
The PSU module is installed and is supplying
DC power to the Switch.
Off
The PSU module is not supplying power.
AC P
OWER
S
UPPLY
U
NIT
(PSU)
Q
UICK
I
NSTALLATION
G
UIDE
(3C17718)
About the AC Power Supply Unit (PSU)
The AC power supply is for use on any Switch that has bays for
two replaceable power supplies. The Switch is fitted with a PSU
in one bay as standard, whilst the second bay is covered with a
blanking plate. To confirm which PSU your Switch supports,
please refer to the Getting Started Guide supplied with your
Switch.
Please read the following safety information before removing or
installing a PSU:
WARNING:
Before installing the PSU, you must read the Safety
Information contained in the Getting Started Guide.
WARNING:
Mains power must be removed from the PSU before
removing the PSU. A PSU must only be powered on once it has
been installed.
WARNING:
The Switch must not be left without a PSU or a
blanking plate in the slot (except during replacement of the
PSU). Tighten all screws with a suitable screwdriver.
WARNING:
Care must be taken when removing a PSU as it may
be hot. The replacement of PSUs should be completed within
two minutes to avoid normal cooling being disturbed.
AVERTISSEMENT:
Avant d’installer le PSU, lisez les informations
relatives à la sécurité qui se trouvent dans le guide d’utilisation.
AVERTISSEMENT
:
Il faut déconnecter le secteur du bloc
d’alimentation avant de démonter ce dernier. Un bloc
d’alimentation ne doit être mis sous tension qu’une fois installé.
Part Number: DIA1771-8AAA01
Published: March 2002
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