Martin Exterior 1200 User Manual page 66

6. If replacing an old lamp, remove it from the socket.
7. The new lamp's glass bulb must be perfectly clean. Do
not touch it with your fingers. Clean it using the wipe
supplied with the lamp. A clean, lint-free cloth wetted
with 99.9% isopropyl alcohol may also be used.
8. Holding the new lamp by its ceramic base, insert it
firmly and squarely into the lamp socket.
9. Re-insert the lampholder in its original position, pushing
and twisting it to lock it in place on the three Allen
screws. Check that lamp wiring is in its original position.
10. Tighten the lampholder screws.
11. Push the effects/lamp assembly back into the housing.
Make sure that the slider locks click into place to ensure
that the assembly is correctly positioned and the lamp
cutout mechanism is deactivated.
12. Before reinstalling the front cover, check the condition of the seal. Replace with a new
item if the seal is torn, cracked or brittle.
13. Place the front cover and seal firmly against the housing. Adjust the straight sides of
the seal so that they stick out a little, just enough so that you can feel the seal when
you run a finger across the joint.
14. Cross-tighten the cover screws, tightening gradually to a torque of 7 Nm (5.2 ft.-lbs.).
At this torque, the seal will be compressed by about one-third.
15. Reapply power and return the resettable lamp hours and lamp strikes counters to zero.
See "8.5.2: Lamp life and monitoring lamp hours" on page 63.
Lamp alignment is factory-set. If after installing a new lamp the Exterior 1200 Image
Projector has a noticeable hot-spot or dark area in the centre of the beam, or if the
brightest part of the beam is significantly off-center, the lamp may need to be realigned.
Please contact your Martin Architectural supplier for assistance.
66 Exterior 1200 Image Projector user manual
Figure 22: Lamp socket