Martin MAC 300 User Manual page 18

C h a n g i n g c o l o r f i l t e r s
Handle color filters by their edges as much as possible and be careful not to chip the edges.
1. Disconnect the fixture from AC power and allow it to cool.
Remove the top cover from the head as shown in Figure 5.
2.
3. Rotate the color wheel until the filter is aligned with the access hole in the chassis plate.
4. Gently tilt the filter out of the clips as shown in Figure 6 and remove.
5. Installation is the reverse. Turn the filter so that the coated side faces the lamp.
Coated side towards lamp
When an object is held up to the coated side there is no
space between the object and its reflection. The back edge
of the filter cannot be seen when looking through the coated
side.
R e p l a c i n g f u s e s
P o w e r s u p p l y f u s e s
The fuses for each of the 3 low-voltage power supplies are located on the printed circuit board. If one of the circuit
board LEDs does not light, one of these fuses may be blown.
1. Disconnect the fixture from AC power. Remove the 2 Philips screws from the plastic cover on the arm
opposite the side with the visible motor and pull off the cover.
2. Locate and replace the defective fuse with one of the same rating. The fuses are shown on the
PCB layout diagram; their values are listed on page 27.
3. Replace the cover before applying power.
18
Figure 6: Color filter removal and positioning
Basic Service
Uncoated side towards stage
When an object is held up to the uncoated side there is
a space between the object and its reflection. The back
edge of the filter can be seen when looking through the
uncoated side.