Practical Service Figure - Aiwa FR-A250UB Service Manual

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 Less than 50 dB (600 kHz)
(S/N 10dB) Less than 46 dB (1000/1400 kHz)
S/N (Input 60dB) Less than 21 dB (600 kHz)
Less than 24 dB (1000/1400kHz)
Distortion <U> Less than 3 % (1000 kHz)
Distortion <LH> Less than 5 % (1000 kHz)
Intermediate frequency 450kHz
<FM SECTION>
Sensitivity (3% dist.) Less than 20 dB (88/98/108 MHz)
S/N (at 60dB) <U> Less than 45 dB (98 MHz)
S/N (at 60dB) <LH> Less than 50 dB (98 MHz)
Distortion (at 60dB) Less than 3% (98MHz)
Intermediate frequency 10.7MHz