AV-36D202
AV-36D302
AV-36D502
ADJUSTMENT OF MTS CIRCUIT
Measuring
ItemTest pointAdjustment partDescription
instrument
MTS INPUTRemoteNo.2 IN LEVEL1. Select the No.2 IN LEVEL of the SOUND MODE.
LEVELcontrol unit2. Verify that the No.2 IN LEVEL is set at its initial setting value.
check
MTS STEREOSignal2 pin AUDIO RNo.3 FH MONITORNote: Menu OMTS� is set to OSTEREO�
VCOgenerator3 pin GND
adjustment[MPX Connector No.4 STEREO VCO1. Receive a RF signal (nonmodulated sound signal) from the antenna
Frequencyin AV SELEC-terminal.
counterTOR PWB]2. Select the No.3 FH MONITOR of SOUND MODE, and change the
setting value from 0 to 1.
Remote3. Connect the Frequency Counter to pin 2 of [MPX] connector and
control unitGND (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 SAPSignal4 pin TP_952.5 No.9 5FH MON.1. Receive a RF signal (non modulated sound signal) from the an-
VCOgenerator3 pin GNDtenna terminal.
adjustment2 pin AUDIO_R No.10 SAP VCO2. Connect between pin 4 of [MPX] connector and GND (Pin 3 of [MPX]
Frequency[MPX Connectorconnector) through 1MO Resistor.
counterin AV SELEC-3. Select the No.9 5FH MON. of the SOUND MODE, and reset the
TOR PWB]setting value from 0 to 1.
Remote4. Connect the Frequency Counter to pin 2 of [MPX] connector and
control unitGND (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 FILTERRemoteNo.6 FILTER1. Select the No.6 FILTER of the SOUND MODE.
checkcontrol unit2. Verify that the No.6 FILTER is set at its initial setting value.
MTSTV audio1 pin AUDIO_L No.7 LOW SEP.Note: Menu OMTS� is set to OSTEREO�
SEPARATIONmultiplex2 pin AUDIO_R
adjustmentsignal3 pin GNDNo.8 HI SEP.1. Input a stereo L signal (300Hz) from the TV audio multiplex signal
generator[MPX Connectorgenerator to the antenna terminal.
in AV SELEC-2. Connect an oscilloscope to pin 1 of [MPX] connector, and display
Oscilloscope TOR PWB]one cycle portion of the 300Hz signal.
3. Change the connection of the oscilloscope to pin 2 of [MPX] con-
Remotenector, and enlarge the voltage axis.
control unit4. 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/
L-Channel R-Channel RIGHT key of the remote control unit.
signal waveformcrosstalk portion6. 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
Minimum
[MPX] connector.
8. Adjust the No.8 HI SEP. so that the 3kHz signal level will become
1 cycle
minimum.
No. 51798C31 |
ACEC
