Zenith C32V23 - 32" Flat-Screen Integrated HDTV, Руководство по обслуживанию

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PV154 - 923-03497
3-13
AB - SERVICING
SERVICING
REGISTER #133 /NAME V-ASPECT
“V-ASPECT”. This correction affect full image , shrink or
expand it. It’s very similar to Vsize because both do the
same but Vaspect should be used to adjust the ratio 4:3
or 16:9. The register can take values from 0 up to 63. If
you decrease the register value down to 0 you’ll see the
fig 17. If you increase the register value up to 63 you’ll
see fig. 18.
Fig. 17
Fig. 18
Figure 17: This image show the result of decreasing the
nominal register value down to 0. You can notice that full
image is shrinking changing the ratio.
Figure 18: This image shows the result of increasing the
nominal register value up to 63. You can notice that
vertical height is fully open affecting the ratio.
REGISTER # 135 / NAME V-POSITION
The “V-POSITION”. This correction affected vertical height
and width size of picture. The register can take values
from 0 up to 63. If you decrease the register value down
to 0 you’ll see the fig 19. If you increase the register value
up to 63 you’ll see fig. 20
Fig. 19
Fig.20
Fig. 19. This image shows the result of increasing the
register value down to 0. You can notice that the full image
is moving downward,while top half is shrinking, and bottom
half is expanding
Fig. 20. This image shows the result of increasing the
register value up to 63. You can notice that the full image
is moving upward. While bottom half is shrinking, and top
half is expanding.
REGISTER # 136/ NAME H-SIZE
This register controls the horizontal raster amplitude
through the EW_DRIVE Pin (EW_DRIVE signal DC bias
adjustment). The values in this register can go from 0 up
to 63. If you decrease the register value down to 0 you'll
se the fig. 21. If you increase the register value up to 63
you'll see the Fig 22.
Fig.21