IBM 3270 Maintenance Manual page 637

5. Install the top card connector; make sure the
pins on the top card connector are aligned
with the top edge APA and display adapter
sockets then, carefully, press the connector
into place.
6. Put the system unit cover on (5-100-3).
7. Plug the system unit power cord into the
power outlet.
5~3200-12
Maintenance Information