Panasonic BT-H1700P

58
HORIZONTAL/VERTICAL IMAGE POSITION, IMAGE AMPLITUDE AND SIDE PIN DISTORTION ADJUSTMENTS (SDTV OVERSCAN 16:9 MODE)
Measuring Instruments Signal generator (Size adjustment signal, Crosshatch signal)
Card (Slot) Component/RGB Input Card (Slot 1)
Test Points
Adjustment Points DW** (Vertical Size), DW** (Vertical Position), DW** (Side Pin Distortion), CE** (Corner Distortion (W)), CE**
(Corner Distortion (S)), CE** (Parallelogram Distortion), CE** (Trapezoidal Distortion), CE** (Horizontal Arc
Distortion) [Service Menu]
1. Apply the 480/60i size adjustment signal to INPUT A (Terminal Y on
the Component/RGB Input Card).
2. Press the ASPECT button on the front panel to set the scanning
size to 16:9 mode.
3. Set the CONTRAST and BRIGHT potentiometers on the front panel
to the center click positions.
4. Adjust DW14 in the Service Menu to set the vertical position of the
image at the center of the CRT screen.
5. Adjust DW13 to set the vertical amplitude of the image to 193mm.
6. Apply the 480/60i crosshatch signal to INPUT A.
7. Adjust CE08 to optimize the trapezoidal distortion (observe the sec-
ond vertical lines from the left and right edges as the reference).
8. Adjust CE07 to optimize the parallelogram distortion (observe the
second vertical lines from the left and right edges as the reference).
9. Adjust CE09 to optimize the horizontal arc distortion.
10. Adjust DW15 so that the second vertical lines from the left and right
edges are linear.
11. If there is an extreme corner S-shape distortion, adjust CE06 to
optimize it (this adjustment is usually unnecessary).
12. If there is an extreme corner W-shape distortion, adjust CE05 to
optimize it (this adjustment is usually unnecessary).
13. Apply the 480/60i size adjustment signal to INPUT A.
14. Ensure that the vertical amplitude of the image is 193mm. If it is
not, adjust DW13 again.
15. Adjust DW14 so that the vertical position of the image comes at the
center of the CRT screen.
16. Vary the adjustment signal and adjustment data, and re-perform
adjustments in steps 1 to 15 above (see Table 12).
193mm
Make these lines linear.
Screen size
Adjustment Adjustment
Adjustment Data
Step No. Signal
Vertical Vertical Side Pin Corner Corner Parallelogram Trapezoidal Horizontal
Position size Distortion Distortion (W) Distortion (S) Distortion Distortion Arc Distortion
1 480/60i DW14 DW13 DW15 CE05 CE06 CE07 CE08 CE09
2 480/60p DW26 DW25 DW27 CE15 CE16 CE17 CE18 CE19
3 576/50i DW20 DW19 DW21 CE10 CE11 CE12 CE13 CE14
Table 12
Notes: • Perform the following adjustments after completing the Reference Mode (SDTV overscan 4:3 mode) adjustments.
• The data adjusted for the reference mode becomes the reference value for the SDTV underscan 4:3 mode and SDTV overscan/
underscan 16:9 modes. When the data of the reference mode is changed, it is required to re-adjust the underscan data and SDTV
overscan/underscan 16:9 mode data for the same adjustment signal.
• The corner distortions (W) & (S), parallelogram distortion, trapezoidal distortion and horizontal arc distortion adjustment data
for this adjustment are common to those in the SDTV overscan 16:9 mode and the SDTV underscan 16:9 mode adjustments.
This adjustment data needs to be adjusted in either mode.
• The corner distortions (W) & (S), parallelogram distortion, trapezoidal distortion and horizontal arc distortion adjustment data
for this adjustment are common to those in the 480/60i and NTSC signal or 576/50i and PAL signal adjustments. This adjustment
data needs to be adjusted with either signal.