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0 dB=1 µV
[AM]
Setting:
BAND switch: AM
Put the lead-wire
AM RF signal
antenna close to
generator
the set.
30% amplitude
modulation by
400 Hz signal
Output level: as low as possible
[FM]
Setting:
BAND switch:
FM
FM SENS switch: DX
FM RF signal
MAIN board
generator
TP (ANT)
0.01 µ F
22.5 kHz frequency
deviation by 400 Hz
signal
Output level: as low as possible
• Repeat the procedures in each adjustment several times, and the
tracking adjustments should be finally done by the trimmer ca-
pacitors.
digital voltmeter
MAIN board
TP (VT)
+
–
Adjustment Location: Main Board (See page 6)
SECTION 3
ELECTRICAL ADJUSTMENTS
level meter
16 Ω
+
set
–
2 (headphones) jack (J1)
level meter
16 Ω
+
set
–
2 (headphones) jack (J1)
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
AM FREQUENCY COVERAGE ADJUSTMENT
Adjustment Part
Frequency Display
L5
Confirmation
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
CT1
FM VCO VOLTAGE CONFIRMATION
Frequency Display
87.5 MHz
108 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L3
CT2
FM STEREO (76 kHz) Adjustment
Setting:
BAND switch:
FM
FM SENS switch: DX
FM RF signal
generator
Carrier frequency : 98 MHz
Modulation
Output level
Procedure:
1. Connect the frequency counter to TP (76 kHz) as shown the
figure below.
2. Tune the set to 98 MHz.
3. Adjust RV1 for 76 kHz reading on the frequency counter.
Specification: 75.5 to 76.5 kHz
MAIN board
TP (76 kHz)
Adjustment Location: MAIN board (See page 6)
– 5 –
450 kHz
Reading on Digital Voltmeter
530 kHz
2.7 ± 0.1V
1,710 kHz
8.9 ± 1V
580 kHz
1,490 kHz
Reading on Digital Voltmeter
2.7 ± 0.1V
8.9 ± 1V
87.5 MHz
108 MHz
MAIN board
TP (ANT)
0.01 µ F
set
: 1 kHz, 22.5 kHz deviation
: 562 µ V (55 dB)
frequency
counter
1 µ F
+
+
–
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