JVC AV-27D201 Service Manual page 28

AV-27D201
AV-32D201
Measuring
Item
instrument
MTS TV audio
SEPARATION multiplex
adjustment signal
generator
Oscilloscope
Remote
control unit
L-Channel
signal waveform
1 cycle
28
Test point Adjustment part
L OUT No.7 LOW SEP.
R OUT No.8 HI SEP.
[AUDIO OUT]
R-Channel
crosstalk portion
Minimum
No. 51686
Description
1. Input the stereo L signal (300Hz) from the TV audio multiplex
signal generator to the antenna terminal.
2. Connect an oscilloscope to L OUT pin of the AUDIO OUT, and
display one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to R OUT pin of the
AUDIO OUT, and enlarge the voltage axis.
4. Select the No.7 LOW SEP. of the SOUND MODE.
5. Set the initial setting value of the No.7 LOW SEP. with the
LEFT/RIGHT key of the menu.
6. Adjust the No.7 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.8 HI
SEP.