ADJUSTMENT
1. AM IF Adjustment IFT101 ........................................................................ 450 kHz 2. AM VT Check Setting: � Test point: TP1 (VT) Check: AM 531 kHz (YZ)/AM 530 kHz (YH) ...... 0.9 ~ 1.4 V AM 1710 kHz ...................................... Less than 8.2 V
L102 L104
5. FM VT Adjustment Settings: � Test point: TP1 (VT) � Adjustment location: L104 Method: Set to FM 87.5 MHz and adjust L104 so that test point becomes 2.3 ± 0.1 V. Check: FM 108.0 MHz (YZ)/FM 108.1 MHz (YH) .......................................... Less than 5.5 V FM 76.0 MHz (YH) ........................... More than 1.0 V
HJ501
6
5
4
3. AM Tracking Adjustment L112 ............................................................................ 630 kHz TC102 ....................................................................... 1440 kHz 4. FM IF Adjustment TC101 ...................................................................... 10.7 MHz 6. FM Tracking Adjustment L102 ......................................................................... 87.5 MHz 7. VCO Frequency Adjustment SFR101 .......................................................... 19 kHz ± 100Hz
VR151 VOLUME
TC101 TC102
IFT101
S209
SFR101 S212 S211 S202
7
1
3
PRACTICAL SERVICE FIGURE
TP1 (VT)
<FM SECTION> IHF Sensitivity: (IHF, THD 3%)
L112
Less than 16 dB (87.5 MHz) Less than 15 dB (98.5/108.0 MHz) More than 50 dB (87.5/98.5/108.0 MHz) Less than 2.0% (98.5 MHz) More than 20 dB (98.5 MHz) 10.7 MHz
<AM SECTION> Sensitivity: (S/N 10 dB)
Less than 51 dB (630 kHz) Less than 48 dB (999 kHz) Less than 45 dB
Signal to noise ratio: Distortion: (Input - 54 dB) Stereo separation:
TP2 (VCO)
Signal to noise ratio: (Input - 74 dB)
(1440 kHz) More than 31 dB (603 kHz) More than 33 dB (999/1440 kHz) Less than 4.0% (999 kHz) 450 kHz
Intermediate frequency:
Distortion: (Input - 74 dB) Intermediate frequency:
9
10
