Panasonic TX-29RX20T Service Manual ▷ View online
DEFLECTION
Note:- For Philippines model, all 50 Hz adjustment is made in AV mode.
A . DEFLECTION ADJUSTMENT / CONFIRMATION (50 Hz, 4:3 Mode ONLY)
(Service 1)
1. INSTRUMENT
a. Helmhortz device
2. PREPARATION
a. Set the Helmhortz device to local magnetic field.
b. Picture menu : DYNAMIC Normal
b. Picture menu : DYNAMIC Normal
3. CONFIRMATION AND ADJUSTMENT
a. Adjustment of 50 Hz V-CENTER
a. Receive the monoscope pattern (E11).
b. Adjust V-POS so that centre of monoscope pattern is at CRT centre.
b. Adjust V-POS so that centre of monoscope pattern is at CRT centre.
b. Adjustment of 50 Hz V-AMP
a. Receive the monoscope pattern (E11).
b. Adjust V-AMP so that
b. Adjust V-AMP so that
C, D (Fig. 3) is 2.0 ± 0.1
A, B (Fig. 3) is 2.0 ± 0.1
A, B (Fig. 3) is 2.0 ± 0.1
c. Adjustment of 50 Hz H-CENTER
a. Receive the monoscope pattern (E11).
b. Adjust H-POS so that horizontal position is at centre of CRT.
b. Adjust H-POS so that horizontal position is at centre of CRT.
Fig. 3
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TX-29RX20T
B . DEFLECTION ADJUSTMENT / CONFIRMATION (50 Hz, 4:3 Mode ONLY)
(Service 1)
1. INSTRUMENT
a. Helmhortz device
2. PREPARATION
a. Set the Helmhortz device to local magnetic field.
b. Picture menu : DYNAMIC Normal
b. Picture menu : DYNAMIC Normal
3. CONFIRMATION AND ADJUSTMENT
a. Adjustment of 50 Hz V-CENTER
a. Receive the Philips pattern (US11).
b. Adjust V-POS so that centre of Philips pattern is at 2/3 of Top and Bottom.
b. Adjust V-POS so that centre of Philips pattern is at 2/3 of Top and Bottom.
A, B (Fig. 3c) is 2/3 of viewable size
b. Adjustment of 50 Hz V-AMP
a. Receive the Philips pattern (US11).
b. Adjust V-AMP so that
b. Adjust V-AMP so that
A (Fig. 3b) is 2/3 of viewable size
c. Adjustment of 50 Hz H-CENTER
a. Receive the Philips pattern (US11).
b. Adjust H-POS so that horizontal position is at centre of CRT.
b. Adjust H-POS so that horizontal position is at centre of CRT.
C, D (Fig. 3c) is 2/3 of viewable size
Fig. 3b
Fig. 3c
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TX-29RX20T
4. ADJUSTMENT OF 50 Hz H-AMP
a. Receive the monoscope pattern (E11).
b. Adjust H-AMP so that both edges are within 2.5 ± 0.2. Refer to Fig. 1.
b. Adjust H-AMP so that both edges are within 2.5 ± 0.2. Refer to Fig. 1.
Fig. 1
5. EW ADJUSTMENT / CONFIRMATION
a. PREPARATION
a. Receive crosshatch pattern (E4).
b. EW ADJUSTMENT
a. Adjust the vertical line no. 2 to straight line (parabola) by EW-AMP 1. (Refer to Fig. 1c)
Fig. 1c
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TX-29RX20T
(16:9 MODE) ADJUSTMENT / CONFIRMATION
1. V-ZOOM (16:9) ADJUSTMENT
(Service 3)
*a. Receive PAL monoscope pattern E11. (If no burst signal : Set to force PAL)
b. Set the aspect to 16:9.
c. Confirm that A, B in Fig. 1 is 4.0 cm ± 1.5, if not, adjust V-ZOOM.
d. Receive NTSC monoscope patern US13. (If no burst signal : Set to force NTSC)
c. Confirm that A, B in Fig. 1 is *a, if not, adjust V- ZOOM.
*a. Receive PAL monoscope pattern E11. (If no burst signal : Set to force PAL)
b. Set the aspect to 16:9.
c. Confirm that A, B in Fig. 1 is 4.0 cm ± 1.5, if not, adjust V-ZOOM.
d. Receive NTSC monoscope patern US13. (If no burst signal : Set to force NTSC)
c. Confirm that A, B in Fig. 1 is *a, if not, adjust V- ZOOM.
Fig. 1
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TX-29RX20T
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