P 3 5 G P S D u a l L e n s T u r r e t P r o j e c t o r
CHRISTIE INCORPORATED
P35GPS Projector
6-8
June, 1998
6 . 6 . 4 . T
I M I N G
A
D J U S T M E N T S
– T
U R R E T A N D
A
P E R T U R E
M
O T O R
The turret motor and the aperture motor are controlled from the PC board, which is mounted
on the non-operator side of the projector. Both motors are timed. One timer goes to the
FLAT
position; another timer goes to the
SCOPE
position. The on-time for the
FLAT
position is
adjusted with a trimpot located at the lower side of the PC board.
When user is facing front of projector, lensholder plate rotates
clockwise to
SCOPE
position and counter-clockwise to
FLAT
position. If
lensholder plate turns in opposite direction, reverse quick-connects on
turret motor.
Turning the trimpot clockwise shortens the time. The timing is set approximately 0.5
seconds longer than the time needed for the turret motor to turn the lensholder plate from the
FLAT
position to the
SCOPE
position and vice versa. The drive wheel will overrun for 0.5
second. The
SCOPE
on-time is adjusted in the same manner, using the trimpot located on the
upper side of the PC board.
5: Turret Mounting Plate
6: Screw Holes,
Mounting
7: Nut, Hinge Tension
8: Cover, Motor
9: Eccentric, Adjustment
and Lock
10: Adjustment, V-bearing
11: Knob, Focus
12: Cover Plate, Turret
13: Turret Main Plate
14: Adjustment, Flat Stop
15: Adjustment, Scope
Stop
Figure 6-4: Dual Turret (Rear View)
