JVC AV-48WP30 Service Manual page 49
Hide thumbs
Also See for AV-48WP30:
- User manual (71 pages) ,
- Service manual (123 pages) ,
- User manual (68 pages)
Table of Contents
Advertisement
AV-48WP30
MTS adjustment
Measuring
Item
Instrument
MTS INPUT
Remote
control unit
LEVEL
check
MTS STEREO
TV audio
multiplex signal
VCO
generator
adjustment
Frequency
counter
Remote
control unit
MTS SAP
TV audio
multiplex signal
VCO
generator
adjustment
Frequency
counter
Remote
control unit
MTS FILTER
TV audio
multiplex signal
check
generator
Oscilloscope
Remote
control unit
48
Test point
Adjustment Item
A02 : IN LEVEL
A03 : FH MONITOR
AUDIO OUT
R output
A04 :STEREO VCO
A09 : 5FH MON.
S2
A10 : SAP VCO
Connector
3-pin:GND
4-pin:SOA
[RECEIVER
PWB]
AUDIO OUT R
output
S2
A05 : PILOT
Connector
A06 : FILTER
2-pin:R
[RECEIVER
PWB]
No. 51914
Description
1. Select 1.PICTURE / SOUND from SERVICE MENU.
2. Select the A02 ＜ IN LEVEL ＞ with FUNCTION (
key.
3. Verify that the A02 ＜ IN LEVEL ＞ is set at its initial
setting value.
1. Receive the RF signal (non-modulated sound signal)
from the antenna terminal.
2. Select the A03 ＜ FH MONITOR ＞ with FUNCTION
(
▲
/
▼
) key, and change the setting value from 0 to 1.
3. Connect the frequency counter to R output pin of the
AUDIO OUT.
4. Select the A04 ＜ STEREO VCO ＞ with FUNCTION
(
▲
/
▼
) key.
5. Set the initial setting value of the No.4 STEREO VCO
with the FUNCTION ( / ) key.
6. Adjust the A04 ＜ STEREO VCO ＞ so that the
frequency counter will display 15.73kHz ± 0.1kHz.
*
The frequency counter indication should be stable.
7. Select the A03 ＜ FH MONITOR ＞ with FUNCTION (
▼
) key, and reset the setting value from 1 to 0.
1. Receive the RF signal (non-modulated sound signal)
from the antenna terminal.
2. Connect between pin ④ of S2 connector and GND
( Pin ③ of S2 connector) through 1M Ω resistor.
3. Select the A09 ＜ 5FH MON ＞ with FUNCTION (
key, and reset the setting value from 0 to 1.
4. Connect the frequency counter to R output pin of the
AUDIO OUT.
5. Select the A10 ＜ SAP VCO ＞ with FUNCTION (
key.
6. Set the initial setting value of A10 ＜ SAP VCO ＞ with
of FUNCTION ( / ) key.
7. Adjust the A10 ＜ SAP VCO ＞ so that the frequency
counter will display 78.67kHz ± 0.5kHz.
*
The frequency counter indication should be stable.
8. Select the A09 ＜ 5FH MON ＞ with FUNCTION (
key, and reset the setting value from 1 to 0.
1. Receive the RF signal (MTS pilot signal) from the
antenna terminal.
2. Select the A05 ＜ PILOT ＞ with FUNCTION (
and reset the setting value from 1 to 0.
3. Connect the oscilloscope to ② pin of S2 connector.
4. Select the A06 ＜ FILTER ＞ with FUNCTION (
5. Adjust the A06: FILTER so that the waveform will
because minimum.
6. Select the A05 ＜ PILOT ＞ with FUNCTION (
and reset the setting value from 1 to 0.
▲
/
▼
)
▲
/
▲
/
▼
)
▲
/
▼
)
▲
/
▼
)
▲
/
▼
) key,
▲
/
▼
) key.
▲
/
▼
) key,
Advertisement
Chapters
Table of Contents
