file:///C:/AA/Nowy%20folder/NA/CT-32HL44J/SVC/s1510000000.html
15.10 MTS circuit adjustmens
The MTS circuit adjustments require two steps:
1. Input level adjustment.
2. Stereo separation adjustment.
Input level adjustment
Service DAC adjustment (MTSIN)
PREPARATION
1. Connect an RMS meter with filter jig as shown in figure to TPA19 (L_OUT)
2. Connect an RF signal generator to the RF antenna input.
PROCEDURE
1. Apply the following signal from the RF signal generator:
❍
Video: 100 IRE flat field, 30% modulation.
❍
Audio: 300Hz, 100% modulation, monaural (70 ±5dB, 75Ω OPEN, P/S 10dB). Make
sure that the 75μs pre-emphasis is OFF.
2. Adjust the MTS input level adjustment MTSIN data until the RMS voltage measured is
106 ± 6.0mVrms.
Stereo separation adjustment (SEPAH)
PREPARATION
1. Connect an R.F. signal generator to the RF antenna input.
2. Connect a scope to TPA20.
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Summary of Contents for CT30WC14J - 30" COLOR TV
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Page 20: ...12 1 Schematic notes in english 20 ...
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Page 22: ...12 2 Schematic notes in spanish 22 ...
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Page 28: ...C844 ECKR3A471KBP CAP C 470PF K 1KV 28 ...
Page 34: ...D513 MAZ42700MF DIODE ZENER 34 ...
Page 38: ...IC503 0N3171R INT CKT 38 ...
Page 40: ...L818 EXCELSA24T FERRITE BEAD 40 ...
Page 47: ...R815 ERJ6GEYJ333V RES M 33K J 1 10W 47 ...
Page 49: ...R889 ERJ6GEYJ272V RES M 2 7K J 1 10W 49 ...
Page 57: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 4 4 TNP2AH061AC AE CT 30WX54J UJ CT 30WC14J UJ ...
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Page 63: ...1 2 3 4 5 6 7 8 A B C D E F G H I J DF BOARD TNP2AA172 CT 30WX54J UJ CT 30WC14J UJ ...
Page 64: ...1 2 3 4 5 6 7 8 A B C D E F G H I J H BOARD TNP2AA174AG CT 30WC14J UJ ...
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Page 243: ...1 2 3 4 5 6 7 8 A B C D E F G H I J DF BOARD TNP2AA172AB CT 32HL44J UJ ...
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