Control Data Cyber 170 Series Operator's Manual page 251

4. Raise paper vertically from supply box and place into upper and then lower paper
tractors.
5. Close all four pressure plates.
6. Close front panel securely.
7. Press START to resume system control. If printing does not begin at top of form,
reposition paper in the tractors.
Loading forms of a different width or thickness involves the following:
1. Move
the tractors to the approximate position by squeezing the detent release and
sliding the tractors to the required position. Detents must reengage in their new
positions. The left and right tractors must be aligned vertically.
2. Place the forms into the upper left paper tractor. Close the pressure plate over
the forms to secure them.
3. In the same manner, place the forms into the lower left paper tractor.
4. Move both right paper tractors into the approximate position by rotating the
horizontal tension control.
5. Place the forms into the right paper tractor. Secure the forms in place with the
pressure plate.
6. In the same manner, place the forms in the lower right paper tractor.
7. Adjust the horizontal tension control so the forms do not buckle (too loose) and the
tractor pins do not stretch the perforated holes (to'o tight).
8. Close the forms alignment scale against the paper. When the train is opened at
least 45 degrees from the paper line, the line finder rises so that the plastic strip
indicates exactly the bottom of the next line to be printed. The column marker
indicates the location of the prin~ columns on the forms.
9. Move
the horizontal position control to align the forms with the proper print
columns.
10. Uncouple the format tape with the tractor drive uncoupler knob above the paper
drive motor. Move this knob toward the back of the machine to engage the eight
line-per-inch stops or toward the front of the machine to engage the six line-per-
inch stops.
11. Use the manual advance knob on the left side of the paper forms to adjust the forms
to the approximate vertical position. This knob can move forms for an unlimited
length up and down. Detent clicks ·of six or eight lines per inch can be felt when the
paper forms are
moved.
Stop on the detent click nearest the desired position.
12. Turn the vertical vernier knob for fine adjustment of the paper forms. Forms can
be accurately positioned while the printer is idle or printing. The full range of this
control is one line.
13. Push PAGE EJECT before recoupling the format tape.
14. Recouple (step 10) the format tape and close the train gate to synchronize the top of
the paper form with the top of form hole (channell) in the format tape. At this
time, the printer is mechanically ready to print.
60435600 A
D-7