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Screen Size Change(Adjusting Focus Rings and CRT Angle)
The projector can project an image from 60 to 300 inches diagonal. From the factory the projector is set for ceiling mount, 100 inch
diagonal screen size and a projection angle of 12 degrees. The projector can be used in either 12 or zero degree application.
Before the following procedures, remove the front panel by removing the four screws C whitch hold the front panel. There are two
screws on each side.
• Adjusting Focus Rings
There are three sets of adjusting focus rings, two between each CRT and lens.
These focus rings are used for maintaining optimum edge focus for the various screen sizes and projection angles.
*When setting the focus rings or changing CRT angle, you must first remove the front panel.
1 Loosen the four screws at the lens.
CAUTION: Be careful not to remove any of the four screws
completely. The falling lens can cause serious injury especially
when the projector is installed on the ceiling.
2 Rotate and set the knobs (A and B) to
the right position. The table below lists
which position the knob should be set to
for any given screen size and angle. The
similar table is also on the back of the
top cover.
3 Tighten the four screws at the lens.
C
A
1 2 3 4 5
B
knob A
knob B
Rotate
Position of Knobs
Projection angle
and screen size(Diagonal)
12
0
13
PROJECTION CONFIGURATION CHANGE
C
screws
screws
200
300
R
CRT
Knob
A
B
60" – 90"
2
2
91" – 130"
3
3
131" – 170"
4
4
5
171" – 300"
5
60" – 90"
2
1
91" – 130"
3
1
131" – 170"
4
1
171" – 300"
5
1
300 200
G
B
Knob
Knob
A
B
A
B
1
2
2
2
1
3
3
3
1
4
4
4
1
5
5
5
1
1
2
1
1
1
3
1
1
1
4
1
1
1
5
1
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