Chapter 3---Service Adjustments
Model 340SC and 370SC Arc Lamp Alignment and Focus
To check Model 340SC and 370SC Arc Lamp alignment, observe the anode shadow on the blue dichroic mirror (the blue dichroic mirror is the first mirror after the condensing lens). Verify that the anode shadow (small, dark oval inside the light circle) is a uniform oval that is no more than ½ inch or no less than ¼ inch in diameter.
If the oval looks
1.Use a standard Phillips screwdriver and loosen the two (2) top screws on the pivot holes (refer to Figure
2.While viewing Test Pattern 6 (Static Flat Field) the uniformity on the screen should become more centered also.
To refocus the Model 340S and 370SC Arc Lamp:
1.Adjust the
2.Verify the proper brightness after the adjustments are complete with a light meter by measuring the
Example: If the screen area is 15x20 = 300 sq. ft.
and the light output on the light meter measures 20
Y-Axis Plate
X-Axis Plate
Z-Axis Screwplate
Model 330, 340SC, 370SC Service Manual |