Sub Brightness Adjustment; Sub Contrast Adjustment - Aiwa VX-F21DV1 Service Manual

Table of Contents

White Balance Adjustment

Note: Allow 20 minutes or longer of warm-up time before starting the white balance adjustment. Repeat the entire steps of the white

balance adjustment several times until all three channels of red, green and blue are balanced each other.

Input signal:

White raster

Measuring equipment: Pattern generator

Adjustment point:

Adjustment menu PAGE 2-1 to PAGE 2-5

Adjustment method:

Connect the white raster signal from the pattern generator to the input.

Find out which color is most strongly illuminating among the three colors of red, green and blue. Set the cut-off value of the

color that you have selected as the most strongly illuminating color, to 127 as the fixed value. Adjust the cut-off values of the

remaining two colors until the optimum white balance is obtained on screen using the VOLUME UP/DOWN keys of the jig

remote controller.

Select the adjustment menu 2-4 G. DRIVE and increase the G DRIVE value to 200 or higher using the VOLUME UP/DOWN

keys of the jig remote controller. The screen will get greenish.

Then start decreasing the G DRIVE value using the jig remote controller until the green color looks as if it is lost.

Select the adjustment menu 2-5 B. DRIVE and increase the B DRIVE value to 200 or higher using the VOLUME UP/DOWN

keys of the jig remote controller. The screen will get bluish.

Then start decreasing the G DRIVE value using the jig remote controller until the blue color looks as if it is lost.

Repeat the above steps 1 to 6 several times until white balance is obtained.