1998-08-0316 MAC 500
6. Repeat steps 3 and 4 for color wheel 1.
7. Use the control panel to test alignment at a number of positions. When the wheels are aligned, tighten the sec-
ond set screw.
8. To adjust the sensors, rotate the color wheels to the open position. Position the sensors directly over the mag-
nets at a distance of 1 - 1.5 mm. The sensors can be moved by carefully moving the ICs.
3.5 S
HUTTER
/
DIMMER
(
MECHANICAL
INDEX
)
1. Position both dimmer blades with 11 mm between the surface closest to the motor and the dimmer motor
mounting plate. Tighten a set screw slightly to fix the position along the motor shaft.
2. Reset the fixture.
3. With power on, position each dimmer blade 0.8 mm from the closed-position mechanical stop and tighten the
set screws.
4. Check that the dimmer opens and strobes properly. Close the dimmer and check that the distance from the
mechanical stops is still 0.8 mm. Tighten the second set screw on each blade.
3.6 P
RISM
(
MECHANICAL
INDEX
)
1. With the power off, slide the focus module all the way forward.
2. Swing the prism in and out of the optical path. Bend the mechanical stop for the prism flag in slightly if the prism
hits the focus motor.
3.7 P
AN
SENSOR
No adjustment is required; the timing wheel is centered in the sensor when the pan motor gear is level with the pan drive gear.
3.8 P
AN
(
ELECTRICAL
INDEX
)
1. Loosen the 2 screws holding the pan reset switch to the pan assembly.
2. Turn the yoke fully clockwise.
3. Move the switch up or down so that the top of the copper spring is even with the top of the mechanical stop bar,
approximately 1 mm below the pan drive gear.
4. Tighten the bracket mounting screws.
3.9 P
AN
MOTOR
SYNCHRONIZATION
1. With the belt on, loosen one of the motor gears just enough to turn it on the shaft without it moving up or down.
The gear must be able to rotate on the shaft when power is applied to the motors.
2. Turn on and reset the fixture to apply power to the motors. If the unit is disassembled, you can use the pan
driver from another unit. Remember to turn off the fixtures before connecting or disconnecting the motors.
3. Tighten the set screws on the loose gear.
3.10T
ILT
MOTOR
SYNCHRONIZATION
1. Loosen one of the motor gears just enough to turn it on the shaft without it moving back or forth. The gear must
be able to rotate on the shaft when power is applied to the motors.
2. Apply power to the fixture and reset.
3. Using a controller or the control panel, tilt the head until a set screw is accessible from above.
4. Tighten the set screw with a 2 mm Allen wrench.
5. Tilt the head a few degrees until the second set screw is accessible. Tighten.
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