Tuner Section - Aiwa NSX-D737 Service Manual

7. MW/LW IF Adjustment
Settings : * Test point : TP - OUT
8. FM Tracking Adjustment
Settings : * Test point : TP - OUT
TCAO1,TC402 -r sree rece r teen ee ee ec eeceescees 108MHz
TCA03 creer ecccceeeen tere ce eeeenenens 108MHZ (EEZ)
LAOL,L402+ + sete cece cere ete e eee e tone eee eees 87.5MHz
LAGS ies Bes iin ghee dia Bolas Sele ee siaeielve Se 87.5MHZ (EEZ)
PRACTICAL SERVICE FIGURE (TUNER)
TUNER SECTION
<FM SECTION >
IHF Sensitivity : 4dB + 4dB (87.5MHz)
14dB + 4dB (87.5MHz)
(EE,K,EEZ model)
(THD 3%) 4dB + 4dB (98.0MHz)
, 8dB + 4dB (98.0MHz)
(EE,K,EEZ model)
4dB + 3dB (108.0MHz)
6dB + 4dB (108.0MHz)
(EE,K,EEZ model)
S/N 50dB Quieting sensitivity :
Less than 36dB
Less than 44dB (EEZ model)
(87.5//90.0/ 108.0MHz)
Signal to noise ratio: (MONO) More than 72dB
More than 68dB
(EEZ model)
(98.0MHz)
(STEREO) More than 64dB
More than 59dB
(EEZ model)
(98.0MHz)
Distortion : (MONO) Less than 1.5%
(98.0MHz)
(STEREO) Less than 1.5%
(98.0MHz)
9. FM IF Adjustment
Settings : * Test point : TP - OUT
16) eee 10.7MHz
10. FM Separation Check
Settings: ° Test point : TP - OUT
Method: Set to FM 98.0MHz and check the
separation at TP—OUT is more than 25dB.
Stereo separation : More than 25dB (98.0MHz)
(HE,LH,U model)
More than 15dB (98.0MHz)
(EE,K,EEZ model)
Intermediate frequency : 10.7MHz
<AM (MW) SECTION >
Sensitivity : 56dB + 6dB (600,603kHz)
(S/N 20dB) 53dB + 5dB (999,1000kHz)
53dB + 5dB (1400,1404kHz)
Distortion : Less than 1.5% (999,1000kHz)
Stereo separation : More than 12dB (400Hz)
Intermediate frequency : 450kHz
<LW SECTION > (EE,K,EEZ)
Sensitivity : 65dB + 5dB (144kHz)
(S/N 20dB) 62dB + 5dB (198kHz)
60dB + 5dB (290kHz)
Distortion : Less than 1.5% (198kHz)
Intermediate frequency :450kHz
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