12.3. MTS input level adjustment
Instrument Name
Connect to
Remarks
1.
FILTER JIG
2.
RMS VOLTAGE METER
3.
RF SIGNAL GENERATOR
TP2200-GND or TP1105-GND or TP1107-
GND
FILTER JIG
RF ANT. INPUT
Procedure
Remarks
1.
Apply following RF signal at antenna input.
Video : Flat field , 30% modulation
Audio : 300Hz ,100% modulation ,monaural
(70dB±5dB ,75ohmOPEN ,P/S 10dB).
NOTE : Make sure 75us Pre-emphasis is off.
2.
Choose MTSIN in MTS adjustment of factory mode.
3.
Adjust “MTSIN” data (Input level) until the RMS voltage.
Meter indicates
12.4. MTS stereo separation adjustment
Instrument Name
Connect to
Remarks
1.
OSCILLOSCOPE
2.
RF SIGNAL GENERATOR
TP1104-GND or TP1106-GNDor Monitor out R-
GND
RF ANT. INPUT
Procedure
Remarks
1.
Select stereo mode in the audio menu.
2.
Apply following RF signal at antenna Input.
Video : Flat field , 30% modulation.
Audio : 300Hz ,30% modulation ,stereo (Left only)
(70dB±5dB ,75ohmOPEN ,P/S 10dB)
Note : After setting 30% modulation with P.L. SW
And N.R. SW off , turn P.L. SW and N.R. SW ON.
3.
Choose SEPAL in MTS adjustment of factory mode.
4.
Adjust “SEPAL” data (Low-level separation) until the amplitude of the waveform on the oscilloscope is
MINIMUM.
5.
Apply following RF signal at antenna Input.
Video : Flat field , 30% modulation
Audio : 3kHz ,30% modulation ,stereo (Left only)
(70dB±5dB ,75ohmOPEN ,P/S 10dB)
Note : After setting 30% modulation with P.L.. SW
And N.R. SW off , turn P.L. SW and N.R. SW ON.
6.
Choose SEPAH in MTS adjustment of factory mode.
7.
Adjust “SEPAH” data (High-level separation) until the amplitude of the waveform on the oscilloscope is
MINIMUM.
8.
Repeat step 2. to 7. Until Low-level separation and High-level separation satisfy above-mentioned
conditions.
The separation must be more
than 20 dB at 300Hz and
3kHz..
More
than
18dB
when
measures at monitorOut.
25
TC-26LX70L / TC-32LX70L
Summary of Contents for TC26LX70L - 26" LCD TV
Page 8: ...5 Chassis Board Layout 8 TC 26LX70L TC 32LX70L ...
Page 16: ...8 Location of Lead Wiring 8 1 Wire dressing 32 inch 16 TC 26LX70L TC 32LX70L ...
Page 17: ...8 2 Wire dressing 26 inch 17 TC 26LX70L TC 32LX70L ...
Page 18: ...9 EMI Processing 9 1 EMI 32 inch 18 TC 26LX70L TC 32LX70L ...
Page 19: ...9 2 EMI 26 inch 19 TC 26LX70L TC 32LX70L ...
Page 33: ...15 Schematic and Block Diagram 15 1 Schematic Diagram Notes TC 26LX70L TC 32LX70L 33 ...
Page 45: ...16 Exploded View and Replacement Parts List 16 1 Exploded View 45 TC 26LX70L TC 32LX70L ...
Page 46: ...16 2 Replacement Parts List Notes 46 TC 26LX70L TC 32LX70L ...
