JVC DT-V2000SU Service Manual page 65

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DT-V2000SU
1080i 16: 9 OVER SCAN CHROMA/PHASE
Test equipment Signal generator(75% Color bar pattern)
Test points TP-47R[CRT SOCKET PWB], TP-47B[CRT SOCKET PWB]
Adjustment locations
COMB SW [SIGNAL PWB], SF04(PHASE), SF03(CHROMA), SF09(B-Y GAIN)
TP-47R WAVEFORM (adjust SF04) TP-47R WAVEFORM (adjust SF03) TP-478 WAVEFORM (adjust SF09)
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2.
3.
4.
5.
6.
(Fig. 1)
Input the 1080i color bar pattern to the INPUT B terminal.
Set the ASPECT to 16:9 in the MENU screen .
2 3
(Fig. 2)
Set the CHROMA and PHASE VR on the front panel to the click position.
Turn the COMB SW to the "S" side.
Connect the oscillo-scope to the TP-47R and TP-47B.
4
2 3
(Fig. 3)
While observing the waveform of TP-47R, adjust the SF04 to obtain the straight waveform between 1 and 2, 3 and 4 (Fig.1 ).
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7.
8.
And then while observing the waveform of the TP-47R, adjust the SF03 to obtain the straight waveform between 1 and2, 3 and 4 (Fig.2).
While observing the waveform of the TP-47B, adjust the SF09 to obtain the straight waveform all of 1 to 4 (Fig.3).
9. Confirm that the waveform of 1 to 4 are straight. If illeagal, readjust the step 6 to 8 as same steps.
10. Turn the COMB SW to "N" side, and confirm the chroma/phase condotion not unusual.
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