Juniper Networks EX8208 - Manual (Page 73)

Table 25: Power Supply LEDs on EX8200 Switches
Description State LED
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.
Unlit INPUT OK
• AC power input is high-voltage line (200–240 VAC). Green
• AC power input is low-voltage line (100–120 VAC). Yellow
NOTE: This LED state
applies only to 2000 W AC
power supplies.
Indicates one of the following:
• DC output voltage is not within normal operating
range.
• Power supply is not supplying DC power correctly.
Unlit OUTPUT OK
• DC power output is within normal operating range. Green
• Power supply has been disabled internally by the
system. Yellow
• Power supply is functioning normally. Unlit FAIL
• On steadily—Power supply has failed.
• Blinking—Demand for output power exceeds the
supply.
Yellow
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
47 Copyright © 2010, Juniper Networks, Inc.
Chapter 2: Component Descriptions