Polaroid Joshua Captiva, Service Manual

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A - 3
Darkslide Cam A two-segment cam on the top of the Timing Gear, which actuates the
DKEC Switch through the Door Stop Link.
Darkslide Link Pivoted arm on Power Actuator, driven upward by Film Shade when Film
Door is closed, to close VER to B+ and power Camera for darkslide.
DKEC Switch One element of wireform Logic Switch which controls Darkslide, End of
Cycle and Mirror Down conditions.
Door Latch Sensor Piece part of Power (Erect) Switch actuated by Door Latch cam. Lifts B+
wire when Door Latch is opened, lowers B+ when Door Latch is closed.
Prevents driving the gears until fully meshed.
Door Stop Pivoted arm actuated by Film Door; closes DKEC through Door Stop Links
when Film Door is opened.
Door Stop Link DKEC-actuating arm, cammed by Timing Gear.
Encoder, Blade Position See Blade Position Encoder.
Encoder Pair Phototransistors used to detect shutter blade motion from passage of light
through coincident blade openings, as blades slide over each other.
EOC End Of Cycle, signalled by Timing Gear opening DKEC Switch.
EOP End Of Pack, signalled by EOP Switch closed after 10th exposure by cam on
Counter Wheel.
Erected Refers to Camera ready for picture taking (opposite of collapsed).
Erect Link Bottom link in Camera erecting linkage; its motion actuates Erect Sensor.
Erect Sensor Part of Power (Erect) Switch rotated by Erect Link when Camera is erected,
which opens GND - VER contact and closes VER - B+.
Erect Switch One of two wireform switches in Joshua. Controls power from filmpack
battery to camera circuits through movement of GND, VER and B+ wires.
Exposure IC Integrated circuit in camera electronics which processes exposure
measurement data.
Far Focus Lens Supplementary lens moved into optical path for subjects in far focus zone
(2.4 m to infinity).
Feed Roll Clutch Allows upper Feed Roll to be rotated backwards if film frame must be
manually removed, without backdriving the gears.