SECTION 4
OPERATION INSTRUCTIONS
2-17 Controls (figure 2-14)
Control
Function
Carriage locking knob
Locks carriage
assembly
in
position
on
girder
assembly.
Control lever
Forward position:
raises lamp house assembly.
Rear position: lowers lamp house assembly.
Control lever stop
Locks control lever in forward (raise) position.
Diaphragm ring
Sets lens opening between f/4.5 and f/32.
Focusing wheel
Varies distance of projection lens from film to
control focus.
Handwheel
Varies
distance
of
carriage
assembly
from
sensitized
paper
to
control
size
of
enlargement.
ON-OFF switch
ON position: applies power to printer.
(figure 2-3)
OFF position: removes power from printer.
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