AV-32D202
AV-32D302
AV-32D502
ADJUSTMENT OF MTS CIRCUIT
Measuring
ItemTest pointAdjustment partDescription
instrument
MTS INPUTNo.2 IN LEVEL1. Select the No.2 IN LEVEL of the SOUND MODE.
LEVEL2. Verify that the No.2 IN LEVEL is set at its initial setting value.
check
MTS STEREOSignal[MPX]No.3 FH MONITORNote: Menu OMTS� is set to OSTEREO�
VCOgeneratorConnector
adjustment2 pin AUDIO RNo.4 STEREO VCO1. Receive a RF signal (nonmodulated sound signal) from the antenna
Frequency3 pin GNDterminal.
counter2. Select the No.3 FH MONITOR of SOUND MODE, and change the
setting value from 0 to 1.
3. Connect the Frequency Counter to pin 2 of [MPX] connector and
GND (Pin 3 of [MPX] connector).
4. Select the No.4 STEREO VCO.
5. Set the initial setting value of the No.4 STEREO VCO with the LEFT/
RIGHT key of the remote control unit.
6. Adjust the No.4 STEREO VCO so that the frequency counter will
display 15.73kHz?0.1kHz.
7. Select the No.3 FH MONITOR of the SOUND MODE, and reset the
setting value from 1 to 0.
MTS SAPSignal[MPX]No.9 5FH MON.1. Receive a RF signal (non modulated sound signal) from the an-
VCOgeneratorConnectortenna terminal.
adjustment4 pin TP_952.5 No.10 SAP VCO2. Connect between pin 4 of [MPX] connector and GND (Pin 3 of [MPX]
Frequency3 pin GNDconnector) through 1MO Resistor.
counter2 pin AUDIO_R3. Select the No.9 5FH MON. of the SOUND MODE, and reset the
setting value from 0 to 1.
4. Connect the Frequency Counter to pin 2 of [MPX] connector and
GND (Pin 3 of [MPX] connector) .
5. Select the No.10 SAP VCO.
6. Set the initial setting value of the No.10 SAP VCO with the LEFT/
RIGHT key of the remote control unit.
7. Adjust the No.10 SAP VCO so that the frequency counter will dis-
play 78.67kHz?0.5kHz.
8. Select the No.9 5FH MON. of the SOUND MODE, and reset the
setting value from 1 to 0.
MTS FILTERNo.6 FILTER1. Select the No.6 FILTER of the SOUND MODE.
check2. Verify that the No.6 FILTER is set at its initial setting value.
MTSTV audio[MPX]No.7 LOW SEP.Note: Menu OMTS� is set to OSTEREO�
SEPARATIONmultiplexConnector
adjustmentsignal1 pin AUDIO_L No.8 HI SEP.1. Input a stereo L signal (300Hz) from the TV audio multiplex signal
generator2 pin AUDIO_Rgenerator to the antenna terminal.
3 pin GND2. Connect an oscilloscope to pin 1 of [MPX] connector, and display
Oscilloscopeone cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to pin 2 of [MPX] con-
nector, and enlarge the voltage axis.
L-Channel R-Channel 4. Select the No.7 LOW SEP. of the SOUND MODE.
signal waveformcrosstalk portion5. Set the initial setting value of the No.7 LOW SEP. with the LEFT/
RIGHT key of the remote control unit.
Minimum6. Adjust the No.7 LOW SEP. so that the 300Hz signal level will be-
come minimum.
7. Change the signal to 3kHz, and connect an oscilloscope to pin 1 of
1 cycle
[MPX] connector.
8. Adjust the No.8 HI SEP. so that the 3kHz signal level will become
minimum.
30No. 51799 |