SVP 450 PLUS - SVD 500 PLUS
4.8 Lens focus adjustment
Each lens must be focused individually with the tubes on, one at a time and following this procedure:
1.Select the HATCH test pattern by pressing the TEST button on the remote control. An external pattern signal can be used if you prefer.
2.Adjust with a low contrast (e.g. 30) and a
3.Turn the other tubes off using the push buttons R,G,B, on the remote control.
4.Loosen the wing screw (B) of the green lens, turn the lens assembly either to the right or left to adjust the focus of the picture in the middle of the screen and then tighten the screw. (B).
A
B
5.Loosen the wing screw (A) of the green lens, turn the lens assembly either to the right or left to adjust the focus of the picture on the borders of the screen and then tighten the screw (A).
6.Look at the screen closely and check the result; repeat the adjustments if necessary.
7.Repeat steps 3, 4 and 5 for the red and blue lenses
Attention:
DO NOT move the electrostatic focus adjustment potentiometers. They were
4.9 Mechanical centering of the tubes
Select the CROSS HATCH signal with the remote control. For an installation different to factory setting (90”) the mechanical centering of the red and blue tubes needs to be adjusted.
Looking at the following figure, unscrew (only 2 turns!) the screws
C |
B |
D |
A |
Physically move the tube until the blue cross is perfectly over the green. Tighten the four screws when you have finished.
Repeat this procedure again for the red tube.
At this point it is necessary to recheck the focus of the red and blue.
4.10Magnet adjustment
If you wish to change the adjustment set at factory, read this chapter through.
1.Switch on the projector without changing the factory setting.
2.Use a monoscope signal (or a signal with central reference) as input signal and mark the picture centre on the screen.
3.Switch off the video projector.
4.Carry out the appropriate deflection settings.
5.Unscrew the 2 screws on the bracket in the projector centre and turn the convergency card as indicated in
the figure.
B
A |
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