Martin MAC 250 ENTOUR User Manual page 24

3. Using a flathead screwdriver, remove the two retaining plates (only one - at position A - is illustrated
here) holding the prism module in place. Disconnect the cables (at positions marked B) from the PCBs
on the prism module.
4. Lift the prism module out of the fixture.
5. Using a Philips screwdriver, remove the half-circle shaped plate that holds the prism into place (as
indicated in this illustration).
6. Remove the rubber belt to free the prism and replace it with a compatible rotating prism (contact your
Martin dealer for a list of available prisms).
7. Replace the rubber drive belt over the rotating prism and screw the half-circle shaped plate into place.
The prism should be able to rotate freely.
8. Reinsert the prism module into the fixture, reattach the leads (these are numbered) to the PCBs, and
screw the retaining plates into place.
9. Replace the top cover using a flathead screwdriver to tighten the four quarter-turn screws.
10. Connect the fixture to AC power.
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A
B
MAC 250 Krypton/Entour