jedyne do czego mogę mieć zastrzeżenie to jakość zdjęć zawartych w przesłanej instrukcji serwisowej ponieważ są fatalnej jakości, praktycznie nieczytelne. tak poza tym jestem zadowolony to jest to czego szukałem.
Instrukcja jest OK. Schematy czytelne, opisane niektóre procedury.
Tekstowy podgląd strony 14 (kliknij aby zobaczyć)
ELECTRICAL ADJUSTMENT
< TUNER SECTION >
1. AM Freq. Range Adjustment L006 ....................................................................... 517kHz TC003 ................................................................... 1750kHz 2. AM Tracking Adjustment L003 ....................................................................... 600kHz TC004 ................................................................... 1400kHz 3. AM IF Adjustment Settings:
PRACTICAL SERVICE FIGURE
< TUNER SECTION >
< FM SECTION >
Sensitivity: (THD 3%) Signal to Noise Ratio: (Input 54dB) Distortion: (Input 54dB) Intermediate frequency: Stereo separation: Less than19dB (88.0MHz) Less than19dB (98.0MHz) Less than19dB (108.0MHz) More than 57dB (at 98.0MHz) Less than 1.5% (at 98.0MHz) 10.7MHz ±0.3MHz More than 18dB
FRONTC.B
MAINC.B
L007 L008
6 5
L003
3
IC001 L009 19 TC1 TC2 L006 TC3 TC4 PVC001
7 1
4
0 0 5 L
Method:
� Test point: IC001 (L81828) 19PIN � Adjustment location: L007 Adjust L007 so that the output level at 1000kHz becomes maximum.
< AM SECTION >
Sensitivity: (S/N 10dB) Distortion: (Input 74dB) Intermediate frequency: Less than 45dB (at 600kHz) Less than 48dB (at 1000kHz) Less than 45dB (at 1400kHz) Less than 1.5% 450kHz±5kHz
0 0 4
2
4. FM Freq. Range Adjustment L005 ..................................................................... 87.0MHz TC001 ................................................................. 109.0MHz 5. FM Tracking Adjustment L004 ..................................................................... 90.0MHz TC002 ................................................................. 108.0MHz 6. FM IF Adjustment Settings: � Test point: IC001 (L81828) 19PIN � Adjustment location: L008 Method: Adjust L008 so that the output level at 98.0MHz becomes balanced. 7. FM Balance Adjustment Settings: � Test point: IC001 (L81828) 19PIN � Adjustment location: L009 Method: Adjust L009 so that the output level at 98.0MHz becomes balanced.
2
< CASSETTE SECTION >
Tape speed: Wow & flutter: Take-up torque: FF torque: Rew torque: Back tension: S/N ratio: Distortion: Noise (PB): Erasing Ratio (W/FILTER): 3000Hz±30% Less than 0.35% (JIS RMS) 30-60g-cm (DECK 1/2) 55-140g-cm (DECK 1/2) 55-140g-cm (DECK 1/2) 3±2g-cm More than 40dB Less than 3.0% (PB) Less than 1mV (AC/DC, MIN) More than 40dB
L
L330
< TAPE SECTION >
8. Tape speed Adjustment Settings: � Test tape: TTA-100 � Test point: J251 (PHONES jack) � Adjustment location: SFR761 Play back the test tape and adjust SFR761 so that the frequency counter reads 3000Hz ±5Hz.
0
Method:
J251 PHONES SFR761
98
8
9. Head Azimuth Adjustment Settings: � Test tape: TTA-320 � Test point: J251 (PHONES jack) � Adjustment location: Azimuth adjustment screw. Method: Play back the 8kHz signal of the test tape and adjust screw so that the output becomes maximum. 10. Bias frequency Adjustment L330 ............................................................. 56kHz ±2kHz
