No. 52007
AV-56WP30
48
MTS ADJUSTMENT
Item
Measuring
Instrument
Test point
Ad justment Item
Description
MTS INPUT
LEVEL
check
Remote
control unit
A02 : IN LEVEL
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.
MTS STEREO
VCO
adjustment
TV audio
multiplex signal
generator
Frequency
counter
Remote
control unit
AUDIO OUT
R output
A03 : FH MONITOR
A04 :STEREO VCO
1. Receive the RF signal (non-modulated s ound 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 c ounter to R output pin of the
AUDIO OUT.
4. Select the A04
<
STEREO VCO
>
with FUNCTION
(
▲
/
▼
) key.
5. Set the initial s etting value of the No.4 STEREO VCO
with the F UNCTION ( / ) key.
6. Adjust the A04
<
STEREO VCO
>
so that the
frequenc y counter will display 15.73kHz
±
0.1kHz.
*
The frequency counter indic ation should be stable.
7. Select the A03
<
FH MONITOR
>
with FUNCTION (
▲
/
▼
) key, and reset the s etting value from 1 to 0.
MTS SAP
VCO
adjustment
TV audio
multiplex signal
generator
Frequency
counter
Remote
control unit
S2
Connector
3-pin:GND
4-pin:SOA
[RECEIVER
PWB]
AUDIO OUT R
output
A09 : 5FH MON.
A10 : SAP VCO
1. Receive the RF signal (non-modulated sound signal)
from the antenna terminal.
2. Connect
between
pin
④
of S2 connec tor 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 c ounter 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 indic ation should be stable.
8. Select the A09
<
5FH MON
>
with FUNCTION (
▲
/
▼
)
key, and reset the s etting value from 1 to 0.
MTS FILTER
check
TV audio
multiplex signal
generator
Oscilloscope
Remote
control unit
S2
Connector
2-pin:R
[RECEIVER
PWB]
A05 : PILOT
A06 : FILTER
1. Receive the RF s ignal (MTS pilot signal) from the
antenna terminal.
2. Select the A05
<
PILOT
>
with FUNCTION (
▲
/
▼
) key,
and res et the setting value from 1 to 0.
3. Connect the oscilloscope to
②
pin of S2 connec tor.
4. Select the A06
<
FILT ER
>
with FUNCTION (
▲
/
▼
) key.
5. Adjust the A06
<
FILT ER
>
s o that the waveform will
because minimum.
6. Select the A05
<
PILOT
>
with FUNCTION (
▲
/
▼
) key,
and res et the setting value from 1 to 0.
Summary of Contents for AV-56WP30
Page 79: ...No 52007 AV 56WP30 79 Memo ...