IBM 3270 Maintenance Manual page 544

6. Disconnect connectors 8 through 13 from the
left rear of the diskette-drive logic board.
7. Disconnect connectors 5 and 6 from the right
front of the diskette-drive logic board.
8. Disconnect the diskette-drive signal cable
from the diskette-drive logic board.
(Top View)
Diskette Drive
Signal Cable
This connector is
present only on
320KB drives.
October 1984 5-601-11