Aiwa VX-F21DV1, Руководство по обслуживанию

Страница: 42 / 52

– 42 –
Pin and Barrel Adjustment
Input signal: Cross-hatch signal
Measuring equipment: Pattern generator
Adjustment point:
Pin-SFR602, Barrel-SFR603
Adjustment method: Adjust the pin and barrel distortion of picture so that the areas A and B in the following illustration become
minimum at both the rightmost end and leftmost end of the cross-hatch display, using SFR602 and SFR603.
Vertical Picture Position Adjustment
Input signal: Monoscope signal
Measuring equipment: SHIBASOKU TP20A1
Adjustment point:
Adjustment menu PAGE 1-2
Adjustment method: Adjust the vertical position of picture so that the V-CENTER line at the center of the monoscope picture is
positioned at the center mark using the VOLUME UP/DOWN key of the jig remote controller. The vertical
picture position adjustment and the V LINEARITY adjustment must be performed together alternately.
Repeat the vertical picture position adjustment and the V LINEARITY adjustment each other a few times so
that the number of scales in the topmost end and the bottommost end are of equal amount when the center
line is positioned at the center mark.
Simplified adjustment procedure
If a monoscope signal is not available, connect the playback video signal of VTR that plays back TTV-N6T (test tape), to the
external video input connector and perform the horizontal picture position adjustment in the same manner as shown above.
Alternately, connect the cross-hatch output signal of the pattern generator to the external video input connector. Adjust the
horizontal picture position so that the V-CENTER line at the center of the monoscope picture is positioned at the center mark
using the VOLUME UP/DOWN key of the jig remote controller.