Replace a PA-5450 Base Card (BC)

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 back of the appliance before handling ESD sensitive hardware. For details on the ESD port location, see PA-5450 Back Panel.
2. Ensure that the PA-5450 is powered off and that the fans are not still spinning.
3. Loosen the two screws on the fan drawer ejector handles (one on either side). Place your thumbs on the bottom of the ejector handles and push until the ejector handles swing outward.

4. Grip the top of the two ejector handles and pull them outward until both handles stop. Gently pull the fan drawer out of the appliance.
5. Using a No. 2 Phillips head screwdriver, unscrew both Base Card (BC) retaining screws.
6. Grab both BC ejector handles and swing the handles outward at the same time. Gently pull the BC outward from inside the appliance.
   Support the BC with one hand while pulling it out from the appliance.
7. With the ejector handles on the replacement BC pointing outwards, slide the replacement BC into the appliance.
8. Close the BC ejector handles and fasten both of the BC retaining screws.
9. Re-install the fan drawer by locking its ejector handles into their previous positions and then tightening the two screws on the ejector handles.