KV-30XBR910 - Sony TV Service Manual (repair manual). Page 20

1.  Input a 1080i cross-hatch signal and an HD monoscope signal that 

contains overscan markers.

2.  Adjust the raster position per Section 2-8., only if this procedure was 

not performed for full mode.

3.  Adjust the geometry similar to Full DRC mode.  Vertical size is 11.7 

± 0.1 sq. and horizontal size is 15.6 ± 0.1 sq., if monoscope signal is 
available.  Otherwise, set the Vertical size to 91.0 ± 0.6% scan and 
Horizontal size as 91.0 ± 0.6% scan.

4.  Use the following register to adjust the horizontal parameter:

A2150-D2

01

HPOS

 

NOTE:  If necessary, touch up the geometry using the data register  
 listed above for Full mode. Check NTSC full mode for side  

 

effect and balance.

5.  Write the data into memory before changing modes.

TWIN mode and FAVORITE mode use the FULL mode adjustment data. 
The key point for TWIN mode adjustment is the blue border appearance. 
The left border on the left picture should not be visible when the left 
picture is selected. Similarly, the right border on the right picture should 
not be visible when the right picture is selected. Balance the HPOS or 
HSIZ data for FULL and TWIN mode.

For INDEX mode, however, no clipping of the picture edge should be 
visible for the small sampled pictures on the right side. Adjust HSIZ/
HPOS to balance FULL and INDEX mode for this. Avoid displaying the 
edge of the raster in FULL or FAVORITE mode.