JVC AV-N29302/S Service Manual page 25

Measuring
Item
instrument
MTS FILTER
check
MTS TV audio
SEPARATION multiplex
adjustment signal
generator
Oscilloscope
L-Channel
signal waveform
1 cycle
Test point Adjustment part
No.5 FILTER
L OUT No.6 LOW SEP.
R OUT
[AUDIO OUT] No.7 HI SEP.
R-Channel
crosstalk portion
Minimum
No. 51834
Description
1. Select the "No.5 FILTER" of the SOUND MODE.
2. Verify that the "No.5 FILTER" is set at its initial setting value.
1. Input a stereo L signal (300Hz) from the TV audio multiplex
signal generator to the antenna terminal.
2. Connect an oscilloscope to L OUT RCA pin of the AUDIO OUT,
and display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT RCA pin of
the AUDIO OUT, and enlarge the voltage axis.
4. Select the "No.6 LOW SEP." of the SOUND MODE.
5. Set the initial setting value of the "No.6 LOW SEP." with the
LEFT/RIGHT key of the menu.
6. Adjust the "No.6 LOW SEP." so that the stroke element of the
300Hz signal will become minimum.
7. Change the signal to 3kHz, and similarly adjust the "No.7 HI
SEP.".
AV-N29302
25