The Sankyo 800 Stereo is a projector that was very popular in many countries, such as Spain, England and the United States, thanks to its affordable price, its reliability, its 150W lamp, its careful treatment of films and the excellence of its optional lens with f 1.0 aperture.
 |
| Sankyo 800 with the very elusive f 1.0 lens |
Since the original motor belt is very expensive, I replaced it with an O-ring of the same caliber and diameter, that is sold in my city, five minutes from my workplace, for less than a euro!
The problem to solve is how to pass the new belt to its pulleys if there is no space? Very easy: you have to remove the two screws marked in red in the photo. This allows that piece to tilt slightly, leaving enough space to place the new strap.
When an original belt is not used, it often happens that the speed of the projector varies slightly, as in this case. So, before placing the cover, you must do what is described below.
On this projector the fine adjustment, for both 18 frames per second and 24 frames, is located on the front, on the right side of the lens area (a magnificent f 1.0 on this unit, by the way), as indicated in the photo. Very important: to adjust these small potentiometers you must use a plastic or wooden screwdriver as a metal screwdriver can cause a serious short circuit of the electronic control unit.
Fine adjustment is controlled by Renzo's strobe device: when the teeth of the toothed rollers, under the strobe light, appear to be motionless, that is the correct speed. More information about Renzo's device can be read here: RENZO STROBOSCOPIC UNIT
If you do not have one of these devices made by Renzo, the adjustment must be done listening a sound movie (but it´s a bit subjective)
No hay comentarios:
Publicar un comentario