Power Supply Leds - Cisco CAtalyst 4500 Series Installation Manual

Chapter 1 Product Overview

Power Supply LEDs

Table 1-7 Power Supply LEDs
LED
INPUT OK
OUTPUT FAIL
FAN OK
In-line PWR (for
1400 W DC single
input power supplies)
78-14409-08
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
section on page 4-2.
Table 1-7 describes the power supply LEDs.
Color/State Description
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.
Red Output voltage is not within the specified range.
Off Output voltage is within the specified range.
Indicates the status of the power supply fans:
Green The fans are operational.
Off The fans are not operational.
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:
•
•
•
Amber Passthru breakers are enabled and input voltage exceeds –60 V.
"Removing and Replacing the Power Supply"
Passthrough breakers are not enabled.
DC input is less than –40.5 V.
One or more –48 V outputs is less than –39 V.
Catalyst 4500 Series Switches Installation Guide
Power Supplies
1-37