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Problema
La riproduzione è attutita e le alte
frequenze sono inaudibili.
Riproducendo nastri registrati con
altri registratori le deflessioni dei
misuratori sono maggiori (o minori)
del solito.
(solo KX-493)
Registrazione con il timer (TIMER
REC) impossibile (si ottiene solo la
riproduzione).
Il telecomando non funziona.
Causa
÷ Un nastro registrato normalmente viene
riprodotto con il sistema Dolby NR.
÷ Le testine sono sporche.
÷ Le testine sono magnetizzate.
÷ I livelli base dei due registratori sono
diversi.
÷ Linguette di protezione della registrazione
spezzate.
÷ Le batterie sono scariche.
÷ Il telecomando è troppo lontano o ha un
angolo eccessivo rispetto al sensore.
÷ Il sensore di telecomando è esposto a
luce intensa.
Rimedio
÷ Disattivare il modo Dolby NR.
÷ Pulite le testine e smagnetizzatele con
uno smagnetizzatore.
÷ Questo non è un guasto.
÷ Coprite i fori di protezione della
registrazione con nastro adesivo o
sostituite la cassetta.
÷ Sostituite le batterie.
÷ Utilizzate il telecomando a meno di 7 m
dal sensore e con meno di 30° dalla
perpendicolare ad esso.
÷ Allontanate l’unità da sorgenti di luce
intensa.
DATI TECNICI
Configurazione piste..................... 4 piste, 2 canali stereo
Motori
KX-493 .............................. Servomotore a c.c.(capstan)
Motore a c.c. a coppia piatta (bobine)
KX-393 ............................................... Servomotore a c.c
Testine . Testina di lettura/registrazione in permaloy duro,
Restina di cacellazione: ferrite a doppio trafello
Trasporto rapido
KX-493 ..................................................... 90 sec. (C-60)
KX-393 ................................................... 100 sec. (C-60)
Wow & flutter
<KX-493>
WRMS ....................................................................0,05%
Picco................................................................... ±0,08%
<KX-393>
WRMS ....................................................................0,07%
Picco................................................................... ±0,12%
Rapporto S/R
<KX-493>
Dolby NR off ......................................................... 60 dB
Dolby B NR On ..................................................... 68 dB
Dolby C NR On ..................................................... 76 dB
<KX-393>
Dolby NR off ......................................................... 58 dB
Dolby B NR On ..................................................... 66 dB
Dolby C NR On ..................................................... 74 dB
Risposta in frequenza
<KX-493>
Nastro normale (–20 dB).......... 20 ~ 17.000 Hz ±3 dB
Nastro CrO
2 (–20 dB)............... 20 ~ 18.000 Hz ±3 dB
Nastro Metal (–20 dB)............... 20 ~ 20.000 Hz ±3 dB
<KX-393>
Nastro normale (–20 dB).......... 20 ~ 16.000 Hz ±3 dB
Nastro CrO2 (–20 dB)............... 20 ~ 17.000 Hz ±3 dB
Nastro Metal (–20 dB)............... 20 ~ 19.000 Hz ±3 dB
Distorsione armonica ................................................. 0,8%
Sensibilità d’ingresso/impedenza
Linea .................................................... 100 mV/50 kohm
Livello d’uscita
Linea ................................................... 570 mV/1,0 kohm
Cuffie ....................................................... 1,5 mW/8 ohm
Separazione canali (1 kHz)....................................... 40 dB
Diafonia (125 Hz) ....................................................... 55 dB
DATI GENERALI
Alimentazione
Modello per U.S.A. e Canada .................. 120 V, 60 Hz
Modello per l’Europa ed G.B. .................. 230 V, 50 Hz
Modello per Australia ............................... 240 V, 50 Hz
Modello generale ........... 110/120/220/240 V, 50/60 Hz
Consumo ...................................................... 16 W (KX-493)
12 W (KX-393)
5W (modo di attesa)
Dimensioni (L/A/P)
KX-493 .................................... 435 x 125.5 x 278.5 mm
KX-393 ....................................... 435 x 125.5 x 283 mm
Peso
KX-493 ................................................................... 4,5 kg
KX-393 ................................................................... 4,4 kg
Accessori
Cavo ingresso/uscita ....................................... Un paio
* Dati tecnici soggetti a cambiamenti senza preavviso.
16


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