Cisco Systems 4500 manual Power Supply LEDs, Input OK

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 1-7describes 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		Green	–48 V passthru output voltage is enabled and is greater than
	1400 W DC single			–39 V and less than –60 V.
	input power supplies)
			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.
				Catalyst 4500 Series Switches Installation Guide
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