The Power-Up Sequence; Powering-Up The Switch; Checking For Correct Operation Of Leds; Connecting A Redundant Power Supply (Switch 3848 Only) - 3Com 3812 - SuperStack 3 Switch Getting Started Manual

The Power-up
Sequence
Powering-up the
Switch
Checking for Correct
Operation of LEDs
Connecting a
Redundant Power
Supply (Switch 3848
only)
The following sections describe how to get your Switch powered-up and
ready for operation.
Use the following sequence of steps to power-up the Switch.
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 1 minute.
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in a rapid sequence.
When the POST has completed, check the Unit Status to make sure that
your Switch is operating correctly.
LED.
Table 6 Unit Status Colors
Color State
Green The Switch is powered-up and operating normally.
Yellow The Switch has failed its Power On Self Test (POST).
Off The Switch is not receiving power.
If there is evidence of a problem, see
LEDs" on page 46
CAUTION: The Switch has no ON/OFF switch; the only method of
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
You can connect a SuperStack 3 Advance Redundant Power System to
the Switch 3848. This unit, which is also known as RPS, is designed to
maintain the power to your Switch if a power supply failure occurs.
For normal redundancy, the unit requires a Type 3 Power Module (part
number 3C16075)
Table 6
"Solving Problems Indicated by
for a list of suggested solutions.

The Power-up Sequence

shows possible colors for the
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