JVC AV-56WP30 Service Manual page 49

Measuring
Item
Instrument
MTS TV audio
multiplex
SEPARATION
signal
adjustment
gener ator
Oscilloscope
Remote
control unit
L-Channel
signal waveform
1 cycle
Test point Ad justment Item
AUDIO OUT A07 : LOW SEP.
A08 : HI SEP.
L output
R output
R-Channel
crosstalk portion
Minimum
No. 52007
Description
1. Input the stereo L signal (300Hz) from the TV audio
multiplex s ignal generator to the antenna terminal.
2. Connect an oscilloscope to L OUTPUT pin of the
AUDIO OUT, and display one cycle portion of the
300Hz signal.
3. Change the c onnection of the osc illosc ope to R
OUTPUT pin of the AUDIO OUT, and enlarge the
voltage axis.
4. Select the A07＜ LOW SEP.＞ with FUNCTION (
▼ )key.
5. Set the initial setting value of the A07＜LOW SEP.＞
with the FUNCTION ( / ) key.
6. Adjust the A07 ＜ LOW SEP. ＞ so that the stroke
element of the 300Hz signal will bec ome minimum.
7. Change the signal to 3kHz, and similarly adjust the A08
＜HI SEP.＞.
AV-56WP30
/
▲
49