-28-
ELECTRICAL ADJUSTMENT -1/1
TUNER SECTION
1. AM IF adjustment
Test point : IC101 (TA 2111N ) 18pin
Adjustment location: L106
L106 ........................ 450kHz
2. AM frequency range adjustment
Test point : C103
Adjustment location: L101
Set the tuner frequency to be 1710kHz
Adjustment L101 so that
The test point voltage is 7.35 7.40V
3. AM tracking adjustment
Test point : IC101 (TA2111N ) 18pin
Adjustment location: L103, TC101
L103 ....................... 600kHz waveform max.
TC101 .................... 1400kHz waveform max.
CASSETTE SECTION
1. Bias frequency adjustment
T301 ........................60 1kH z
VR301 .................... 11V
5
1
1 3 5
2
test point
3
4
2
test point
L103
L102
L108
TC101
18
L106
L101
C103
1
1
2
2
test point
CN301
VR301
T301
4. FM frequency range adjustment
Test point: C103
Adjustment location: L108
Set the tuner frequency to be 87.5MHz
Adjustment L108 so that
The test point voltage is 6.0
0.1V
5. FM tracking adjustment
Test point: IC101 (TA2111N ) 18pin
Adjustment location: L102
L102 ....................... 108MHz waveform max
4
MAIN C.B
CASSETTE C.B
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