EDL Displays 6120 Operation And Maintenance Manual page 43

3. Adjust BLACK level for 2% brightness on corresponding color.
4. Set Video generator for 100% flat field.
5. Adjust GAIN pot for 100% brightness on the corresponding color.
FULL PROCEDURE
1. PRE-ALIGNMENT
a. Adjust the range, GAIN and BLACK level post full CCW.
b. Adjust null pot for mid-range.
c. Warm-up unit for at least 30 minutes.
d. Adjust front panel Brightness and Contrast pot full CW.
e. Set generator for 20% flat white field.
f. Adjust sub-brightness pot on Mother Board so that the Minolta registers the
hottest gun at 2%.
g. Adjust the two remaining BLACK Level pots so that the Minolta registers 2%.
2. COLOR COORDINATE AND LUMINOUS ALIGNMENT
a. Set color-bar level on VG809 to 255.
b. Adjust all GAIN pots until a reading of 100% is observed on the TV-2130.
c. Set color-bar level on VG809 to 51.
d. Adjust the G1 pot on Mother Board until a reading of 20% is obtained on the
hot gun.
e. Adjust BLACK level pots on the two remaining amps until 2% is observed on
the TV-2130.
f. Repeat the above steps until all three video amps match at 100% and at 2%.
g. Set VG809 to color-bar level of 255.
3. COLOR TRACKING ALIGNMENT
a. Ensure that front panel Brightness and Contrast controls are completely CW.
b. Note luminous level for one gun (approximate 100%).
c. Adjust RANGE pot completely CW.
6115 - 6120 Operation and Maintenance Manual ©EDL Displays, Inc. January 1997
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