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CHAPTER 5
Maintenance and Troubleshooting
42 SHOWGUN
®
User Manual
Replacing Lithopatterns
®
This section explains how to remove and replace individual components in the rotating gobo
wheels for SHOWGUN
®
fixtures. These directions apply to any gobo or lithopattern in SHOWGUN
fixtures that adheres to the specifications, (see
LithoPattern Specifications on page 6).
Replace lithopatterns or effects if they are damaged or broken, to change their order in the wheel,
to clean them, or to install a new or custom lithopattern or effect.
If applicable, remove all pieces of broken glass in the fixture before beginning.
WARNING!
Disconnect power before servicing.
Equipment surfaces may reach temperatures up to 130° C
(266° F). Allow the fixture to cool before handling.
To replace a lithopattern in the rotating gobo wheel:
1. Remove the fixture’s bezel cover and rotate the gobo wheel until the selected lithopattern is
easy to access.
2. Locate the spring securing the lithopattern to the
wheel. Pull the spring tip t
owards the center of the
aperture. The spring will release from its groove inside
the aperture.
3. Remove the spring and lithopattern.
4. Place the new lithopattern into the aperture.
5. Install lithopatterns with the coated side away from the
lamp.
To determine which side of the lithopattern is coated, place the tip of a pen against each side
of the lithopattern and view it from a slight angle. On the coated side, the tip of the pen
appears to touch its reflection. On the uncoated side, there appears to be a gap between the
pen and its reflection
6. Replace the spring.
7. After replacing the lithopattern, clean it by using a soft, lint-free cotton cloth and a mild glass
cleaning solution (containing no ammonia).