Aiwa VX-F20DV1 U Service Manual page 88

Setting the IIC bus data
Initial value
When the EEP ROM is replaced, enter the following initial value before starting adjustment.
When this set is brought in for normal repair other than the EEP ROM replacement, confirm status of the corresponding item
only before starting adjustment.
Horizontal Picture Position Adjustment
Input signal:
Measuring equipment: SHIBASOKU TP20A1
Adjustment point:
Adjustment method:
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 dot mark in the center of the cross-hatch signal is positioned at the center of the screen
and the number of scales in the right and left on screen are of equal amount as shown in the illustration, using the VOLUME
UP/DOWN key.
Horizontal Picture Size Adjustment
Input signal:
Measuring equipment: SHIBASOKU TP20A1
Adjustment point:
Adjustment method:
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 size 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 size so that the number of scales from the center of the screen to the rightmost end and the number scales
from the center to the leftmost end on screen are of equal amount (8 to 9 scales) using the VOLUME UP/DOWN key.
Monoscope signal
Adjustment menu PAGE 1-1
Adjust the horizontal position of picture so that the horizontal position scales at the rightmost end and at the
leftmost end of a monoscope picture are of equal amount, using the VOLUME UP/DOWN key.
Monoscope signal
SFR601
Adjust the horizontal picture size so that the horizontal position scales at the rightmost end and at the
leftmost end of a monoscope picture are 5.5±0.5 scales using SFR601.
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