IBM V03 Maintenance Information page 202

1. Turn off the printer and unplug the power cord from the
printer.
2. Disconnect the host cable from the attachment card.
3. Loosen the two thumbscrews holding the attachment card in
place.
4. Holding the thumbscrews with both hands (or the handle if
this is a LAN card), gently pull the attachment card from the
port.
Chapter 5. Removals, service checks and adjustments
202