Juniper Networks EX8208 Power Supply LEDs on EX8200 Switches, State, Input OK, Output OK, Fail

Chapter 2: Component Descriptions

Table 25: Power Supply LEDs on EX8200 Switches

LED	State
INPUT OK	Unlit

	Green
	Yellow
	NOTE: This LED state
	applies only to 2000 W AC
	power supplies.
OUTPUT OK	Unlit

	Green
	Yellow
FAIL	Unlit
	Yellow

Description

Indicates one of the following:

•Power supply is disconnected from AC power feed.

•AC power input voltage is not within normal operating range.

•No AC power input.

•AC power input is high-voltage line (200–240 VAC).

•AC power input is low-voltage line (100–120 VAC).

Indicates one of the following:

•DC output voltage is not within normal operating range.

•Power supply is not supplying DC power correctly.

•DC power output is within normal operating range.

•Power supply has been disabled internally by the system.

•Power supply is functioning normally.

•On steadily—Power supply has failed.

•Blinking—Demand for output power exceeds the supply.

NOTE: If the INPUT OK LED and the OUTPUT OK LED are unlit, the AC power cord is not installed properly or the power supply has failed.

If the INPUT OK LED is lit and the OUTPUT OK LED is unlit, the AC power supply is not installed properly or the power supply has an internal failure.

If the FAIL LED is lit, the power supply has failed and must be replaced. If the FAIL LED is blinking, add a power supply to balance the power demand and supply.

Related Topics • AC Power Specifications for EX8200 Switches on page 109

•Power Requirements for EX8208 Switch Components on page 111

•Power Requirements for EX8216 Switch Components

•AC Power Cord Specifications for an EX8200 Switch on page 112

•Connecting AC Power to an EX8200 Switch on page 173

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