Replace a PA-7050 DC Power Supply

1. Put the provided ESD wrist strap on your wrist ensuring that the metal contact is touching your skin. Then attach (snap) one end of the ground cable to the wrist strap and remove the alligator clip from the banana clip on the other end of the ESD grounding cable. Plug the banana clip end into one of the ESD ports located on the front of the chassis before handling ESD sensitive hardware. For details on the ESD port location, see PA-7050 Front Panel (AC).
2. Locate the failed power supply by viewing the system logs or by viewing the LED on the front of the power supply. A red LED indicates a failed power supply. For details on the power supply LEDs, see Interpret the PA-7000 Series Firewall Power Supply LEDs.
3. Power off the DC power source that is connected to the failed DC power supply.
4. Remove the DC power cable from the failed DC power supply by squeezing the two clips on each side of the plastic connector and then pull the connector away from the power supply.
5. Loosen the power supply thumb screw located at the top left of the power supply.
6. Pull the power supply ejector handle out and down from the top center of the power supply to disengage it from the chassis and then slide the power supply out of the chassis using the power supply handle.

7. Remove the replacement power supply from the packaging and open the front ejector handle until it is fully open.
8. Slide the new power supply into the empty power supply slot until it almost fully seated. Ensure that the notch near the hinged part of the ejector handle inserts into the chassis so that when you close the handle, it properly seats the power supply.

9. Tighten the upper left screw on the power supply to secure the power supply.
10. Insert the DC power cable back into the power supply ensuring that the notches line up correctly. The plastic clips on each side of the connector will clip into place as you seat the cable.
    When cabling the DC power supply to your power source, ensure that you route the cable in such a way that it does not put pressure on the plastic clips located at the front of the power supply. It is best to route and secure the cable first and then plug the cable into the power supply.
11. Turn on the DC power feed.