Installing An Mx480 Ac Power Supply - Juniper MX480 Hardware Manual

Installing an MX480 AC Power Supply

To install an AC power supply (see
1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other
end of the strap to the ESD point on the chassis.
2. Move the AC input switch next to the appliance inlet on the power supply to the off (O) position.
3. Using both hands, slide the power supply straight into the chassis until the power supply is fully seated
in the chassis slot. The power supply faceplate should be flush with any adjacent power supply faceplate
or blank installed in the power supply slot.
4. Tighten both captive screws at the bottom of the power supply.
5. Attach the power cord to the power supply.
6. Route the power cord along the cable restraint toward the left or right corner of the chassis. If needed
to hold the power cord in place, thread plastic cable ties, which you must provide, through the openings
on the cable restraint.
7. Attach the power cord to the AC power source, and switch on the dedicated customer site circuit
breaker for the power supply. Follow the ESD and connection instructions for your site.
8. Move the AC input switch next to the appliance inlet on the power supply to the on ( | ) position and
observe the status LEDs on the power supply faceplate. If the power supply is correctly installed and
functioning normally, the AC OK and DC OK LEDs light steadily, and the PS FAIL LED is not lit.
Figure 140 on page 395):
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