Sequence Of Operation; Stages Of Operation; Loading Filmpack Into Erected Or Folded Camera; Theory Of Operation - Polaroid Joshua Vision Service Manual

2.

Theory of Operation

Sequence of Operation

Figure 2-1 shows an overall, pictorial summary of the entire sequence of operations from power up through
processing, followed by detailed descriptions of what happens during each of the major stages.
Note: A Circuit Diagram of the Joshua Camera is included at the

Stages of Operation

Note: To prevent confusion, the terms erected and folded (or collapsed)
Loading Film Pack into Erected or FoldedCamera
Inserting a new film pack into the camera, and closing and latching the film door (assuming there are no
pictures in the storage chamber) results in:
• Film pack to be positioned in the film plane.
• Camera to be powered up.
• Darkslide to be transported from the film pack to the picture chamber.
• Picture counter wheel to be indexed from a blank position to the number 10.
• Strobe to be charged, when the camera is erected.
Note: If the picture chamber is full, a red warning LED will flash
end of this section. Refer to the Glossary in the Appendix of this Service
Manual for a definition of the Joshua terms used in this section.
will be used to describe the camera position.
Open and closed will be used in reference to camera doors.
and a two-tone beep will sound if the camera is erected.
When the chamber is emptied, normal darkslide will occur
immediately and the camera will be ready for use.
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