Panasonic NATIONAL STEREO SS-7000A Manuale di servizio - Pagina 6
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FM-RF ALIGNMENT
(Refer to fig. 8)
Output of signal generator should be no higher than necessary to obtain an output reading.
5
Set volume control to maximum.
.
Set treble control to center.
Set balance control to center.
Set bass contro! to center.
Set band selector switch to FM.
Maintain line voltage at rated voltage.
SIGNAL
SIGNAL
RADIO
GENERATOR
GENERATOR
DIAL
INDICATOR
ADJUST
REMARKS
COUPLING
FREQUENCY
SETTING
Connect to EXT. FM antenna
terminal through FM
dummy
antenna.
Common
(400 Hz Mod.)
to chassis.
Output meter across
L106 (FM OSC Coil)
90 MHz
;
EXT Speaker Jack
Lio1 (FM ANT Coil)
Adjust for maximum
(\)
L103 (FM Detector Coil)
output.
Note:
As three output responses will be present proper tuning is the center frequency.
2. FM-STEREO ALIGNMENT
19 kHz AMP. ALIGNMENT
(Refer to fig. 9)
EQUIPMENT
REQUIRED
Stereo Modulator
Connect Stereo Modulator output to EXT. Mod. terminal of signal generator.
Signal Generator ......... Modulation Rate of 19 kHz pilot signal
10%
Output Level
..
Frequency
Approximately 90 MHz
Oscilloscope
Dummy Antenna VTVM
CONTROL SETTING & PROCEDURE
Band selector switch to FM STEREO, treble control to minimum, bass control to minimum
balance control to center, volume control
to andible level of speaker sound and dial setting to approximately 90 MHz.
EQUIPMENT CONNECTION
SIGNAL GENERATOR
OSCILLOSCOPE
ADJUST
REMARKS
SEPARATION ALIGNMENT
(Refer to fig. 9)
EQUIPMENT
REQUIRED
Stereo Modulator
Connect Stereo Modulator output to EXT. Mod. terminal of signal generator.
Signal Generator
Modulation Rate of 19 kHz pilot signal
Modulation Rate by signal
... 30%
Output Level
.. 60%
Oscilloscope
Dummy Antenna VTVM
CONTROL SETTING & PROCEDURE
Band selector switch to FM Stereo, treble control to minimum,
bass control to minimum,
balance contro! to center, volume control to
500 mW of output level.
modulated.
3. POWER AMP. ALIGNMENT
(Refer to fig. 10)
EQUIPMENT
REQUIRED
Tester
OC mV Range
DC mV Range
CONTROL SETTING
& PROCEDURE
Band selector switch to PHONO,
treble contro! to minimum,
bass control to minimum,
balance contro! to center, volume control to
minimum.
Connect VTVM (for DC mY) to point
V and W.
RV603 (Lch)
Make adjustments so that the indication