Pal Colour Output Level Adjustment - Panasonic TC-14Z99R Service Manual

TC-14Z99R
2.7.

PAL Colour Output Level Adjustment

1. Receive the PAL B/G studio colour bar pattern and adjust local frequency at the best tuned position.
2. Pic Menu: Dynamic Normal, Confirm Contrast - 100 DAC, Sub Contrast - 21 dac.
3. Channel colour set --------- STD
4. "CHK2" and press digit key "5" (AKB OFF) also confirm OSD become blue colour.
5. Connect TPA 10 to TPA 20.
6. Set (A) to 2.3 ± 0.2V by BRT (CHK2) at measurement point TPL 2 Fig. 4.
1. Connect oscilloscope probe to TPL 2 (G OUT) with 10kΩ series resistor and adjust Contrast so that (B) as in Fig. 4 is 2.25 ±
0.05V.
2. Adjust "Sub Colour" so that waveform as in Fig. 4 (1) 2.5 ± 0.1V.
3. Connect oscilloscope probe to TPL 1 (R OUT) with 10kΩ series resistor and confirm waveform as in Fig. 5 is (2) 2.50 ± 0.4V.
4. Press digit key "5" (AKB ON) and confirm the OSD become white colour.
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