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Chapter 1 Product Overview
Power Supplies
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Catalyst 4500 Series Switches Installation Guide
78-14409-08
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.