Service manual

3. SECTIONAL DESCRIPTIONS
3.1 OVERVIEW
This film projector unit allows making copies from the following kinds of films:
35 mm positive slides (both mount films and glass mount films)
35 mm negative or positive strip films
Positive or negative films of wide size
(45 x 60 / 60 x 60 / 60 x 70 / 60 x 80 / 60 x 90 mm / 4" x 5" /
maximum size of 142 x 210 mm or 5.6" x 8.2")
The light from the projector lamp [A] is reflected by the reflector [B] and
reaches the film (35 mm) in the film/slide holder [C] through the non-spherical
lens [D], heat filter [E], and condenser lenses [F]. The projected film image
reaches the mirror [G] through the correction filter (positive or negative) [H]
and projection lens [I]. Then the mirror reflects the image onto the exposure
glass through the Fresnel lens [J]. The first scanner moves under the
exposure glass to read the projected film image and the light of the image is
converted to R/G/B electrical signals by the CCD [K].
The 35 mm film’s image is enlarged about 6 times when projected onto the
exposure glass.
In the case of wide films, the first scanner reads the film placed on the
exposure glass directly using the light from the projector lamp.
The lamp cooling fan turns on and off depending on the temperature of the
projector lamp section detected by the lamp thermistor. It turns on at around
45°C and turns off at around 44°C.
[A]
[B]
[C]
[D]
[G]
[H]
[I]
[J]
[E]
[K]
[F]
Film Projector
Unit
Spu 3 (A718)
SECTIONAL DESCRIPTIONS
SM 10-3 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA