— 12 —
TUNER SECTION
0dB=1µV
Note: 1. As a front-end (FE1) is difficult to repair if faulty, replace
it with new one.
AM Tuned Level Adjustment
Note: FM Tuned Level adjustment should be performed after this
AM Tuned Level Adjustment.
Setting:
Band: MW
loop antenna
Field strength dB (µV/m) = SSG output level dB (µV/m) –26dB.
Procedure:
1. Set the output of SSG so that the input level of the set becomes 55
dB.
2. Tune the set to 999 kHz or 1,050 kHz.
3. Adjust RV42 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: TCB board
FM Tuned Level Adjustment
Note: This adjustment should be performed after the AM Tuned
Level Adjustment.
AM RF SSG
30% amplitude
modulation by
400Hz signal
60cm
AM antenna
terminal (TM1)
loop antenna
(Supplied accessories)
Modulation: 999 kHz (at 9 kHz step)
1,050 kHz (at 10 kHz step)
set
set
Carrier frequency: 98MHz
Modulation:
AUDIO 1kHz, 75kHz
deviation (100%)
FM ANTENNA terminal
(TM1)
Procedure:
1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location
[TCB BOARD] (Component Side)
RV42
AM Tuned
Level
TM1
FE1
RV41
FM Tuned Level
IC2
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