TUNER SECTION0 dB=1?V
AM Tuning Voltage Adjustment
Main boardDC voltmeter
TP1
F
G
VT+
�
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 12)
AM Tracking Adjustment
loop antenna
loop antenna(Supplied accessories)
AM RF SSG
set
AM ANTENNA
30% amplitude60 cm
terminal (JK101)
modulation by
400 Hz signal
Field strength dB (?V/m) =SSG output level dB (?V/m) �26 dB.
Procedure:5. Adjust CT102 so that when the waveform on the oscilloscope
1. Tune the set to 600 kHz.is maximum, no noise appears.
2. Set the output of AM RF SSG so that the input level of the set
will become 60 dB (?V/m).Y Repeat the procedures in each adjustment several times, and the
3. Adjust L104 so that when the waveform on the oscilloscope istracking adjustment should be finally done by the trimmer
maximum, no noise appears.capacitors.
4. Tune the set to 1,400 kHz.
Adjustment Location: MAIN board (See page 12)
FM Tuning Voltage Adjustment
Main boardDC voltmeter
TP1
IF
G
VT+
�
Procedure :
1. Set the reception frequency of the unit to 87.5 MHz.
2. Adjust L103 for 1.2 ? 0.05V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 108 MHz.
4. Confirm that the voltage reading on the DC voltmeter is within
7.8 ? 0.5V.
Adjustment Location: MAIN board (See page 12)
N 11 N |
ACEC
SONY
