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44
IBM 1800 Operating Procedures
9.
Place marginal punched holes over left tractor drive
pins
(I).
Close tractor door and left guide plate.
10.
Move left form tractor and form until first printing
position on form is approximately aligned with
desired print position on 1443. Lock tractor at
desired location by pulling up on tractor lock lever.
11.
Move right form tractor to coincide with marginal
punched holes on right side of
forms.
This is done
by pressing down on tractor lock lever (1)
and
sliding tractor to desired position.
12.
Place marginal punched holes on right side of forms
over drive pins (K) on right tractor. Close tractor
door
and
right guide plate.
13.
Remove slack in form by sliding tractor on right side.
Lock it
at
desired position by pulling up on lock
lever.
14.
Adjust paper brake control (L) and platen position-
ing control (M) to desired settings.
15.
Lower print position indicator (N).
16.
Set carriage drive to either six or eight lines per inch,
depending on
form
to be used.
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