AIWA FRA250 UBLBH
Manual de Servicio

ELECTRICAL ADJUSTMENT
1. AM IF Adjustment Setting : � Test point : TP1, 2(IN), TP8, 9(OUT) T2 . . . . . . . . . . . . . . . . . . . . . 450 kHz 2. FM IF Adjustment Setting : � Test point : TP2, 3(IN), TP8, 9(OUT) IT1 . . . . . . . . . . . . . . . . . . . . 10.7 MHz 3. AM FREQ, RANGE Adjustment Setting : � Test point : L1(IN), TP6, 7, 8, 9(OUT) L4 . . . . . . . . . . . . . . . . . . . . . 515 kHz TC4 <U> . . . . . . . . . . . . . . . 1750 kHz TC4 <LH> . . . . . . . . . . . . . . 1635 kHz 4. AM Tracking Adjustment Setting : � Test point : L1(IN), TP6, 7(OUT) L1 . . . . . . . . . . . . . . . . . . . . . 600 kHz TC1 <U> . . . . . . . . . . . . . . . 1500 kHz TC1 <LH> . . . . . . . . . . . . . . 1400 kHz 5. FM FREQ, RANGE Adjustment Setting : � Test point : TP4, 5(IN), TP6, 7, 8, 9(OUT) L3 . . . . . . . . . . . . . . . . . . . . 87.0 MHz TC3 . . . . . . . . . . . . . . . . . . . 109 MHz 6. FM Tracking Adjustment Setting : � Test point : TP4, 5(IN), TP6, 7(OUT) TC2 . . . . . . . . . . . . . . . . . . . 106 MHz

PRACTICAL SERVICE FIGURE
<AM SECTION> Sensitivity (S/N 10dB) S/N (Input 60dB) Distortion <U> Distortion <LH> Less than 50 dB (600 kHz) Less than 46 dB (1000/1400 kHz) Less than 21 dB (600 kHz) Less than 24 dB (1000/1400kHz) Less than 3 % (1000 kHz) Less than 5 % (1000 kHz)

Intermediate frequency 450kHz <FM SECTION> Sensitivity (3% dist.) S/N (at 60dB) <U> S/N (at 60dB) <LH> Distortion (at 60dB) Less than 20 dB (88/98/108 MHz) Less than 45 dB (98 MHz) Less than 50 dB (98 MHz) Less than 3% (98MHz)

Intermediate frequency 10.7MHz