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10. Position the outer tape guide.
a. Rotate the guide around the latch shaft until the
clearance between the arc and the drive sprocket is
0.010" to 0.020".
b. Clamp the guide.
11. Adjust the brush separator support plate so that
a. with the assembly open the brushes are below the
active surface of the separator.
b. stop rod does not interfere with the brush separator
as the assembly is closed.
12. Adjust the brush interlock switch actuator so that
a. interlock switch is made when the brushes are
down.
b. switch opens before the latch pawl disengages the
latch block.
13. After these adjustments have been made, adjust the
carriage tape brushes dynamically.
CAUTION:
Be sure the stop rod is located so that it will
not contact the raised hub of the contact roll. Blown fuses
may result.
Carriage Tape Brushes (Dynamically) Adjustments
1. Insure that no binds exist when you manually turn
the forms advance knob with the 6-8 knob in neutral.
2. Set up the carriage for dynamic adjustment.
a. Insert a carriage tape punched with a hole in
channel one.
b. Remove the forms.
c. Engage the manual clutch in 6-line drive.
d. Program a space to zero (no numeric bits) before
print.
3. Set up the scope for
a. 1 ms/division horizontally.
b. 10v/division vertically.
c. Sync on negative shift of stop brush (at
CE
indi-
cator panel on current machines or at pin 28 on re-
sistor panel on earlier machines).
4. Start carriage by depressing the start key. Stop the
carriage by depressing the carriage stop key.
5. Probe the negative shift of the emitter brush (at
CE
indicator panel on current machines or at pin 38 on resistor
panel on earlier machines).
6. Rotate the tape drive sprocket with respect to its
shaft so that emitter will make 1 millisecond
± 1 /4
milli-
second after the tape stop brush.
O
Figure 23. Carriage Tape Brushes
34
REMOVALS AND ADJUSTMENTS
35
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