Simplex APOGEE, Instruction Manual And Parts List

Page: 32 / 63

27
AUTOMATIC LENS TURRET (continued)
6. If a lens change fails to execute when cued, press the reset switch until the desired format is in place.
Check the condition of the cuing material; foil tape may be worn, or bar code information may be
obscured by scratches or dirt. Check for faulty cue detector or failed contact in automation controller.
7. A malfunction in aperture/turret logic indicates a problem in the turret control board. Consult the factory.
There are
no user-serviceable components on the printed circuit board.
8. Periodically check the condition of the magnets mounted to the index stops; clean the surfaces of the
magnets to allow good conduction. These magnets are sensed by the proximity switch on the turret ring to
determine aperture logic. A single magnet mounted
inboard denotes FLAT, a single magnet on the
outboard edge denotes SCOPE, and two magnets (inboard and outboard) indicate SPECIAL (three-lens
turret only). The magnets are to be positioned close enough to the proximity switch to permit accurate
detection, but should not obstruct turret rotation.
9. L.E.D. indicators next to the reset switch display operation of the aperture-sensing proximity switch.
When the center L.E.D. is illuminated, the proximity switch is sensing the inboard magnet, and setting the
FLAT aperture. The lower L.E.D. glows when the proximity switch senses the outboard magnet, and
actuates the SCOPE aperture. The uppermost L.E.D. glowing indicates that the proximity switch senses
two magnets, thereby setting the SPECIAL aperture (third lens, when used). Failure of the L.E.D. indica-
tor, and/or failure of the aperture to cycle, means that the magnet(s) or the proximity switch are loose or
out of alignment; adjust as required.