Polaroid Joshua Vision Service Manual page 128

FEM
Film Carrier
Film Chamber
Film Door
Film Shade
Film Speed Switch
Fill Flash
Flash Fire Aperture
Flex, Interconnect
Focus Zone
Folded
Framing Field
Fresnel Focusing Screen
Full Chamber Link
Gear, Timing
GND
Hiccup
Hybrid Quench
Finite Element Modeling, a computer-modeling technique for measuring
stresses; used in Joshua design to significantly increase strength and
reliability of camera structures.
Frame on Film Chamber Door which positions Filmpack.
Compartment in Joshua for holding finished pictures.
Access door to Film Chamber.
Sliding metal cover actuated by Pick mechanism, to prevent light-striking
unexposed film via light-piping through mylar layer.
Compensates exposure for slow film pack; actuated if film pack has no notch
(normal pack has notch); part of Logic wireform Switch.
Use of strobe to add to ambient light, to produce satisfactory exposure.
Shutter blade aperture at which the strobe should be fired to produce
optimum exposure and sharp focus.
Flexible mylar printed wiring to connect camera power source and circuits.
Near or far zone occupied by subject, which determines whether near (front)
lens system only, or near and far focus lenses will be used.
Refers to Camera in collapsed position (opposite to erected).
Area seen in viewfinder; in Joshua, same as photographic field.
A highly reflective screen employing concentric Fresnel rings, to provide
uniform brightness over the entire image area.
Actuated by the 10th film frame to enter Film Chamber (or by a film jam);
closes Full Chamber Switch on Logic Switch to inhibit operation of Camera.
Key element of Drive System; has cams on front and back which control
DKEC, Pick Carrier and Recock Link.
Ground wireform of Power Switch. When shorted to VER, discharges
capacitor in Power Supply, shuts off power from all circuits.
Very brief Motor run when Camera is erected, to complete previous camera
cycle left unfinished when power was broken.
Energy-saving strobe quench method incorporating approximately 0.4 stop
excess aperture to compensate for system inaccuracies.
A - 4