3com 3824 User Manual
The Power-up Sequence
23
The Power-up
Sequence
Sequence
The following sections describe how to get your Switch powered-up and
ready for operation.
ready for operation.
Powering-up the
Switch
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.
which takes approximately 1 minute.
Checking for Correct
Operation of LEDs
During the Power On Self Test, all ports on the Switch are disabled and
the LEDs light in a rapid sequence.
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.
your Switch is operating correctly.
LED.
Table 6 Unit Status Colors
If there is evidence of a problem, see
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.
connecting or disconnecting mains power is by connecting or
disconnecting the power cord.
Connecting a
Redundant Power
Supply (Switch 3848
only)
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.
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)
number 3C16075)
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.
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