3Com Switch SuperStack II User Manual

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The Power-up Sequence 29
The Power-up
Sequence
The following sections describe how to get your Switch 3300 FX
powered-up and ready for operation.
Connecting a
Redundant Power
System
You can connect a SuperStack II Advanced Redundant Power System
(part number 3C16071) to the Switch. This unit, which is also known as
an RPS, is designed to maintain power to the Switch if a power supply
failure occurs.
For normal redundancy, the unit requires one Type 2 Power Module (part
number 3C16074).
For full redundancy, the unit requires two Type 2 Power Modules
combined using a Type 2 Y-Cable (part number 3C16078).
CAUTION:
Use only the SuperStack II Advanced Redundant Power
System Type 2 output and Type 2 cables to connect to the special socket
on the Switch.
Powering-up the
Switch 3300 FX
Use the following sequence of steps to power-up the Switch.
CAUTION:
The Switch has no ON/OFF switch; the only method of
connecting or disconnecting main power is by connecting or
disconnecting the power cord.
1
Plug the power cord into the power socket at the rear of the Switch.
2
Plug the other end of the power cord into your power outlet
The Switch powers-up and runs through its Power On Self Test (POST),
which takes approximately 12 seconds.
Checking for Correct
Operation
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in the following sequence:
■ All unit LEDs light
■ Module LEDs light
■ Port Status LEDs light in a rapid cycle
When the POST has completed, check the Power/Self Test LED to check
that your Switch is operating correctly. Ta b l e 4
shows possible colors for
the LED.
16982ug1.bk Page 29 Thursday, April 29, 1999 4:51 PM

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