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To separate the L and R Channels of Stereo Signal.
Symptom of Misadjustment:
The L and R Channels of Stereo Signal will not be separated properly resulting
in no stereophonic effect.
Test Point :
TP9001, TP9101 (Audio C.B.A.)
Adjustment:
R9001, R9008, R9101, R9108 (Audio C.B.A.)
Specification :
minimum level
INPUT :
Antenna Input Terminal
MTS (ONLY L CH)
300 Hz±5 Hz, 3 kHz±5 Hz
14 % or 7 % Modulating
Mode :
STEREO audio (TV)
Equipment :
Oscilloscope, MTS/SAP Signal Generator
1. Set to TV mode, and then set to STEREO audio.
2. Connect the RF OUTPUT of the MTS/SAP Signal Generator to the Antenna Input
Terminal.
Then, set the MTS/SAP Signal Generator as follows.
MTS (ONLY L CH)
300 Hz±5 Hz
14 % or 7 % Modulating
3. Connect the Oscilloscope to TP9001 on the Audio C.B.A.
4. Adjust R9001 (SEP (L) ) on the Audio C.B.A. so that the signal level of TP9001 is
minimum.
5. Set the MTS/SAP Signal Generator as follows.
MTS (ONLY L CH)
3 kHz±5 Hz
14 % or 7 % Modulating
6. Adjust R9008 (SEP (H) ) on the Audio C.B.A. so that the signal level of TP9001 is
minimum.
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