16. Verify that the AC power cord is not touching or blocking access to router components,
and that it does not drape where people could trip on it.
17. Remove the ESD grounding strap from the ESD points on the chassis. Connect the
strap to an approved site ESD grounding point. See the instructions for your site.
18. Connect the AC power cord plug to the power source.
19. Switch on the customer site circuit breakers to provide voltage to the AC power cord.
20. Remove the ESD grounding strap from the approved site ESD grounding point. See
the instructions for your site. Reconnect the strap to one of the ESD points on the
chassis.
21. Verify that the AC OK LED on the power supply faceplate is lit steadily, indicating that
the AC terminal block is receiving power.
22. Switch the power switch on the power supply to the ON position (|) to provide power
to the router components.
23. Verify that the DC OK LED on the power supply faceplate is lit steadily, indicating that
the power supply is correctly installed and is functioning properly. The DC OK LED
blinks momentarily, then lights steadily.
NOTE: After a power supply is powered on, it can take up to 60 seconds
forstatusindicators—such as the LEDs on the powersupply, the command
output displays, and messages on the LED display on the craft interface—to
indicate that the power supply is functioning normally. Ignore error
indicators that appear during the first 60 seconds.
403Copyright © 2017, Juniper Networks, Inc.
Chapter 29: Replacing Power System Components
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