Ew Adjustment/Confirmation (4:3 Mode) - Panasonic TX-29P180T Service Manual

6.2.2.2. 120i H-AMP ADJUSTMENT
1. Receive NTSC monoscope pattern.
2. Set scan mode to 100 Hz by remote control key.
3. Adjust H-AMP (120i / 4:3) so that both of the edges are
within A, B = 2.5 ± 0.2.
6.3. EW
ADJUSTMENT/CONFIRMATION
(4:3 MODE)
6.3.1. 100i SIDE EW ADJUSTMENT (4:3
MODE)
1. Receive PAL cross-hatch pattern.
2. Set scan mode to 100 Hz by remote control key.
3. Adjust the vertical line to straight by Parabola (100i / 4:3).
4. Adjust the vertical line to straight line of both sides vertical
line in Fig. 4 by Trapezoid (100i / 4:3).
5. Confirm there is no H-parallel distortion.
If there is distortion, adjust by H-Parallel (100i / 4:3).
In that case, repeat 4 and 5 so that there is no trapezoid /
parallel distortion.
6. Confirmation EW of the corner side.
If need, adjust Top-Corner (100i / 4:3) and Bottom Corner
(100i / 4:3).
7. Confirm bow level of the both side.
If it is not symmetrical, adjust C-Correct (100i / 4:3).
6.3.2. 120i EW ADJUSTMENT (4:3 MODE)
1. Receive NTSC cross-hatch pattern.
2. Set scan mode to 100 Hz by remote control key.
3. Adjust the vertical line to straight by Parabola (120i / 4:3).
4. Adjust the vertical line to straight line of both sides vertical
line in Fig. 4 by Trapezoid (120i / 4:3).
5. Confirm there is no H-parallel distortion.
If there is distortion, adjust by H-Parallel (120i / 4:3).
In that case, repeat 4 and 5 so that there is no trapezoid /
parallel distortion.
6. Confirmation EW of the corner side.
If need, adjust Top-Corner (120i / 4:3) and Bottom Corner
(120i / 4:3).
7. Confirm bow level of the both side.
If it is not symmetrical, adjust C-Correct (120i / 4:3).
Fig. 3
6.3.3. 50p EW ADJUSTMENT (4:3 MODE)
1. Receive PAL cross-hatch pattern.
2. Set scan mode to progressive by remote control key.
3. Adjust the vertical line to straight by Parabola (50p / 4:3).
4. Adjust the vertical line to straight line of both sides vertical
line in Fig. 5 by Trapezoid (50p / 4:3).
5. Confirm there is no H-parallel distortion.
If there is distortion, adjust by H-Parallel (50p / 4:3).
In that case, repeat 4 and 5 so that there is no trapezoid /
parallel distortion.
6. Confirmation EW of the corner side.
If need, adjust Top-Corner (50p / 4:3) and Bottom Corner
(50p / 4:3).
7. Confirm bow level of the both side.
If it is not symmetrical, adjust C-Correct (50p / 4:3).
6.3.4. 60p SIDE PINCUSSION
ADJUSTMENT (4:3 MODE)
1. Receive NTSC cross-hatch pattern.
2. Set scan mode to progressive by remote control key.
3. Adjust the vertical line to straight by Parabola (60p / 4:3).
4. Adjust the vertical line to straight line of both sides vertical
line in Fig. 5 by Trapezoid (60p / 4:3).
5. Confirm there is no H-parallel distortion.
If there is distortion, adjust by H-Parallel (60p / 4:3).
In that case, repeat 4 and 5 so that there is no trapezoid /
parallel distortion.
6. Confirmation EW of the corner side.
If need, adjust Top-Corner (60p / 4:3) and Bottom Corner
(60p / 4:3).
7. Confirm bow level of the both side.
If it is not symmetrical, adjust C-Correct (60p / 4:3).
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Fig. 4
Fig. 5
TX-29P180T