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B+l Voltage Adjustment:
1.
Adjust VR601 (B+1 ADJ) to make the pattern of the wave from the negative point
of D606 be 24V.
B+2 Voltage Adjustment:
2.
wave from the negative point of D401 be 108 +/- 0.5VDC.
H-Frequency Adjustment:
3 .
distortion.
4.
V-High Adjustment:
Inspect VRs of H-Pin, V-High, H-Phase, H-Width, V-Cent, Contrast & Brightness.
5.
1.
Bias Adjustment (White Balance):
a.
Input 3 1.5KHz (640
Contrast VR to the maximum. Turn counter-clockwise of VR905, VR906,
Use Degaussing Bar to demagnetize the CRT surface. Do the
b.
demagnetization only in one direction (clockwise or counter-clockwise)
do not remove the unit demagnetized.
c.
Depending on the background color, increase the two weaker color from
follows:
Adjust the Screen VR on FBT to make Y
Drive Adjustment (White Balance):
Input 3 1.5khz (640 x 480) Block pattern. Turn Brightness
a.
to the maximum.
FINAL ALIGNMENT
Input 31.5KHz (640 x 480) Crosshatch pattern.
Adjust VR403 (B+2 ADJ) to make the pattern of the
Adjust MU01 (H-FREQ) to correct horizontal
Adjust VR706 (V-High) to the maximum.
FINAL ALIGNMENT
x
480) Background pattern. Turn Brightness &
4
-
-
2
Contrast VR
as
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