3. Install the replacement side filter.
4. Using a Phillips (+) screwdriver, number 2, tighten the screws on the bracket located
on the side of the power supply.
5. Reinstall the front filter element.
6. Press the front filter cover straight onto the power supply faceplate until all four sides
click into place.
7. Detach the ESD grounding strap from the ESD points on the chassis. Attach the ESD
to an approved site ESD grounding point. Follow the instructions for your site.
8. Connect the AC power cord to the power source.
9. Switch on the customer site circuit breakers to the power supply.
10. Detach the ESD grounding strap from the approved site ESD grounding point. Follow
the instructions for your site. Reattach the ESD grounding strap to one of the ESD
points on the chassis.
11. Verify that the AC OK LED on the power supply faceplate is lit steadily, indicating that
the inputs are receiving power.
12. Switch the power switch on the power supply to the ON position (|).
13. 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.
395Copyright © 2017, Juniper Networks, Inc.
Chapter 29: Replacing Power System Components
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