Exchanging the AMD controller card in the 5088 and 0588 expansion units

Use this procedure to remove or replace the air moving device (AMD) controller card (BB1).

1. Power off the PCI expansion unit (see Powering off an expansion unit).
2. Disconnect the two ac power cords from the ac box.
3. Remove the rear cover (see Exchanging the covers in the 5088 and 0588 expansion units).
4. Remove the EMC access plate over the card enclosure by loosening the thumbscrews and pulling it toward you.
5. Unclip and remove the cable by pressing down on the cable retainers to eject it.
6. Remove the AMD controller card by pulling out on the latch knob and sliding the card back toward you.
7. Install the new AMD controller card by reversing this removal procedure. After exchanging an item, go to Verifying the repair. This ends the procedure.