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Catalyst 4500 Series Switches Installation Guide
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Chapter 1 Product Overview
Power Supplies
When power is removed from one power supply on a Catalyst 4500 series switch
that has two power supplies, the redundant power feature causes the second power
supply to produce full power.
To replace a power supply, see the
“Removing and Replacing the Power Supply”
section on page 4-2
.
Power Supply LEDs
Table 1-7
describes the power supply LEDs.
Table 1-7
Power Supply LEDs
LED
Color/State
Description
INPUT OK
Indicates whether the input voltage is within the required range:
Green
Input voltage is within the required range.
Flashing
Input voltage is present, but is below required range.
Off
Input voltage is below the required range or the power supply is
off.
OUTPUT FAIL
Red
Output voltage is not within the specified range.
Off
Output voltage is within the specified range.
FAN OK
Indicates the status of the power supply fans:
Green
The fans are operational.
Off
The fans are not operational.
In-line PWR (for
1400 W DC single
input power supplies)
Green
–48 V passthru output voltage is enabled and is greater than
–39 V and less than –60 V.
Off
Indicates any of the following:
•
Passthrough breakers are not enabled.
•
DC input is less than –40.5 V.
•
One or more –48 V outputs is less than –39 V.
Amber
Passthru breakers are enabled and input voltage exceeds –60 V.
