IBM 3270 Maintenance Manual page 559

18. Turn the screw until the speed shown on the
screen is -within the required specifications.
SPEED IS 2000
ADJUST FOR 1980 TO 2020
PRESS ANY KEY TO EXIT
SPEED IS 1999
ADJUST FOR 1980 TO 2020
19. Set the Power switch on the system unit (and
expansion unit, if attached) to Off.
20.
Set the Power switches on all attached
devices to Off.
21. Unplug the power cord of the system unit
(and expansion unit) from the outlet.
22.
Disconnect all cables from the rear of the
system unit.
23. Install the diskette drive (5-601-4)
or
(5-601-8)~
24. Install the cover of the system unit (5-100-3).
25.
Connect all cables.
5-601-26
Maintenance' Information