JVC AV-N29302/S Service Manual page 24

AV-N29302
ADJUSTMENT OF MTS CIRCUIT
Measuring
Item
instrument
MTS INPUT
LEVEL
check
MTS STEREO Signal
VCO generator
adjustment
Frequency
counter
MTS SAP Signal
VCO generator
adjustment
Frequency
counter
24
Test point Adjustment part
No.1 IN LEVEL
R OUT No.2 FH MON.
[AUDIO OUT]
No.3 ST VCO
【 【 【 【 MPX】 】 】 】 No.8 5FH MON.
Connector
No.9 SAP VCO
【 【 【 【 4】 】 】 】 pin SDA
【 【 【 【 3】 】 】 】 pin GND
R OUT
[AUDIO OUT]
1. Select the "No.1 IN LEVEL" of the SOUND MODE.
2. Verify that the "No.1 IN LEVEL" is set at its initial setting value.
1. Receive a RF signal (non-modulated sound signal) from the
antenna terminal.
2. Select the "No.2 FH MON." of SOUND MODE, and change the
setting value from 0 to 1.
3. Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
4. Select the "No.3 ST VCO".
5. Set the initial setting value of the "No.3 ST VCO" with the
LEFT/RIGHT key of the menu.
6. Adjust the "No.3 ST VCO" so that the Frequency Counter will
display 15.73kHz ± 0.1kHz.
7. Select the "No.2 FH MON." of the SOUND MODE, and reset
the setting value from 1 to 0.
1. Receive a RF signal (non modulated sound signal) from the
antenna terminal.
2. Connect between pin 【 4 】 of 【 MPX 】 connector and GND (Pin
【 3 】 of 【 MPX 】 connector) through 1M Ω Resistor.
3. Select the "No.8 5FH MON." of the SOUND MODE, and reset
the setting value from 0 to 1.
4. Connect the Frequency Counter to R OUT RCA pin of the
AUDIO OUT.
5. Select the "No.9 SAP VCO".
6. Set the initial setting value of "No.9 SAP VCO" with the
LEFT/RIGHT key of the menu.
7. Adjust the "No.9 SAP VCO" so that the Frequency Counter will
display 78.67kHz ± 0.5kHz.
8. Select the "No.8 5FH MON." of the SOUND MODE, and reset
the setting value from 1 to 0.
No. 51834
Description