217 Controls (figure 214)
Carriage locking knob
Locks carriage assembly in position on girder
Forward position: raises lamp house assembly.
Rear position: lowers lamp house assembly.
Control lever stop
Locks control lever in forward (raise) position.
Sets lens opening between f/4.5 and f/32.
Varies distance of projection lens from film to
Varies distance of carriage assembly from
sensitized paper to control size of
ON position: applies power to printer.
OFF position: removes power from printer.