13. Aligning the lamp
Aligning the lamp in the optical system is achieved via the 3 adjusters at the rear of the
in the optical system
projector.
This procedure should be undertaken to properly align the lamp in the optical
system and to avoid the possible overheating of the internal components due to the
incorrect focusing of the beam onto components not intended to be exposed to this.
alignment procedure
Alignment is effected via the 3 adjusters
A
,
B
and
C
operating in conjunction with
each other. The lamp should be on, black-out and dimmer fully open, and no colour
filters inserted.
If the lamp is not correctly aligned, a hot-spot will be noticeable. This is a function of the
lamp’s positioning. Use the two adjusters (
A
and
B
) to bring the hot-spot to the centre
of the beam. Use the third adjuster (
C
) to flatten the beam to maximum uniformity.
vertical adjustment
Adjuster (
B
) acts on a lever and spring assembly to position the lamp via a vertical
movement within the reflector; rotate it until correct positioning is achieved.
horizontal adjustment
Adjuster (
A
) acts on a lever and spring assembly to position the lamp via a horizontal
movement within the reflector; rotate it until correct positioning is achieved.
axial adjustment
Adjuster (
C
) moves the entire lamp assembly axially within the unit; rotate it until cor-
rect positioning is achieved, resulting in a flat, even beam.
lamp
C
lamp
lamp
B
LOOSEN TO
RE-LAMP
LOOSEN
TO RE-LAMP
LOOSEN
TO RE-LAMP
A
d
ju
st
la
m
p
po
siti
on
by turning knobs
A
,
B
an
d
sc
re
w
C
C
a
u
ti
o
n
: h
ot
lam
p.
Isola
te electrically
befo
re
re
-la
m
p
in
g
