Panasonic PVQ-1312W, Service Manual

Page: 68 / 251

8. Turn the SCREEN CONTROL on the Flyback Transformer
clockwise carefully and stop at the point where any color is first
observed.
9. In EVR adjustment mode, select the two colors not observed in
step 8 from the following control functions (B CUT -OFF, G CUT -
OFF, or R CUT -OFF) and adjust so that the horizontal line
becomes white.
For example, if the horizontal line appeared red in step 8, select
and adjust the B CUT -OFF and G CUT -OFF.
(See NOTE)
10. Supply a White Pattern Signal to the Video Input Jack.
11. Press DISPLAY key on the remote control again to return for full
frame scan.
12. Select G DRIVE and B DRIVE in EVR adjustment mode and adjust
so that the entire screen is white.
13. Select SUB BRIGHT in EVR adjustment mode. Then, after making
a note of the original value, adjust to the minimum (C0) and while
turning SUB BRIGHT value from minimum (C0) up to maximum
(3F), confirm that the screen is tracking the White Patternproperly.
Repeat the above steps 5, 9, 11, and 12 until the screen is properly
tracking the White Pattern.
Note:
Before pressing DISPLAY key on the remote control for collapse
scan, select the desired control function and move the shaded area
to the value.
7.3.12. SUB BRIGHTNESS ADJUSTMENT
Purpose:
To set the optimum brightness level.
Symptom of Misadjustment:
The picture is too white or too black.
Test Point :
----------
Adjustment :
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