TUNER SECTION0 dB=1?V
AM Tuning Voltage Adjustment
DC voltmeter
Main board
TP1
G
VT+
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Procedure:
1. Set the reception frequency of the unit to 530 kHz.
2. Adjust L105 for 1.2 ? 0.05 V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 1,710 kHz.
4. Confirm that the voltage reading on the DC voltmeter is within
8.0 ? 0.5 V.
Adjustment Location: MAIN board (See page 13)
AM Tracking Adjustment
loop antenna
loop antenna(Supplied accessories)
AM RF SSG
set
AM ANTENNA
30% amplitude60 cm
terminal (TM1)
modulation by
400 Hz signal
Field strength dB (?V/m) =SSG output level dB (?V/m) �26 dB.
Procedure:
1. Tune the set to 600 kHz.5. Adjust TC102 so that when the waveform on the oscilloscope
2. Set the output of AM RF SSG so that the input leis maximum, no noise appears.vel of the set
will become 60 dB (?V/m).
3. Adjust L104 so that when the waveform on the oscilloscope isY Repeat the procedures in each adjustment several times, and the
maximum, no noise appears.tracking adjustment should be finally done by the trimmer
4. Tune the set to 1,400 kHz.capacitors.
Adjustment Location: MAIN board (See page 13)
N 12 N |
ACEC
SONY
