power supply or a blank panel. If you remove a power supply, you must install
a replacement power supply or a blank panel shortly after the removal.
NOTE: After powering off a power supply, wait at least 60 seconds before
turning it back on.
To remove a DC power supply (see Figure 52 on page 120):
1. Switch off the dedicated customer site circuit breaker for the power supply being
removed. Follow your site's procedures for ESD.
2. Make sure that the voltage across the DC power source cable leads is 0 V and that
there is no chance that the cables might become active during the removal process.
3. Verify that the status LED on the power supply is not lit.
4. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
5. Move the DC circuit breaker on the DC power supply faceplate to the off (O) position.
6. Remove the clear plastic cover protecting the terminal studs on the faceplate (see
Figure 53 on page 120).
7. Remove the screw from each of the terminals. (Use a number 2 Phillips screwdriver.)
8. Remove the cable lugs from the terminals.
9. Carefully move the power cables out of the way.
10. Press the latch located on the left side of the power supply, to release it from the
chassis.
11. Pull the power supply straight out of the chassis.
119Copyright © 2019, Juniper Networks, Inc.
Chapter 4: Maintaining Components
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