Technics ST-7300 Service Manual

CARACTERISTICS
TECH
IQUES
(IHF)
Sujet
4
changement
sans
préaris.
PARTIE TUNER FM
Séparation
des
canaux:
1kHz
45
dB,
10kHz
35
dB
Gamme
recue:
88
~
108MHz
Résidus
de
porteuse
(19kHz,
38kHz):
—60
dB
-
Bornes
d’antenne:
3002
(symétrique)
a
7oQ
lasymétrique)
PARTIE
TUNER
AM
serseilite:
Te
2.04
Gamme
recue:
925
~
1605kHz
Signal/Bruit
46
dB
senibilite
STEREO
19xnV
(75Q)
Sensibilité.
B30LV,
260.4V/m
Distorsion
harmonique
totale:
Sélectivita.
;
20
dB
6
:
MONO
0.2%
(100Hz2),
0.2%
(kHz),
0.5%
(6kHz)
Réjection
de
fraquence
image
4
1000kHz:
45
dB
STEREO
0.4%
(100Hz),
0.4%
(1kHz),
0.5%
(6kHz)
Réjection
Fl
a
1000kHz:
40
dB
Rapport
S/B:
MONO
75d8,
STEREO
70dB
er
ee
:
ee
+0,2
.
:
Courbe
de
réponse:
20Hz
~
15kHz,
10
dB
GENERALITES
Sélectivité
en
canaux
alternés:
75dB
Tension
de
sortie:
0.5V/4.7kQ
Rapport
de
capture:
1,0
dB
Alimentation:
(50/60Hz)
110/120/220/240V
Réjection
de
fréquence
image
4
98MHz:
55
dB
Consommation:
11W
Réjection
Fl
a
98MHz:
82
dB
Dimensions
(L
x
H
x
P):
410
x
139
x
317mm
Réjection
de
réception
non
sélective
a
98MHz:
80
dB
Poids:
5,1
kg
Suppression
AM:
55
dB
m
LOCATION
OF
CONTROLS
FM
STEREO
INDICATOR
PANTENNA
AM
ANTENNA
SIGNAL
|
TUNING
3002
750
VOLTAGE
METER | METER
SELECTOR SWITCH
ee
te
ere
eee
|
GND
FM MUTING/FM MOD
E
REC LEVEL CHECK
OUTPUT
Front
Panel
View
Rear
Panel
View
LOW
PASS
FILTER
FM
RF
CIRCUIT
POWER
FUSE
FM/AM
TUNING
V.C.
AM FERRITE ANTENNA
AM/FM IF I.C. ;
FM IF/FM DET I.C.
FM MPX I.C.
(PLL TYPE
DIAL LIGHT COVER
Chassis View
m@
RECORDING
LEVEL
CHECK
SWITCH
(REC
LEVEL
CHECK)
The
phase
shift
oscillation
circuit
consisting
of
one
transistor
and
CR
is
incorporated,
and
when
the
switch
is
turned
"ON",
since
wave
in
the
vicinity
of
440Hz”"
is
continuously
developed
from
the
Output
terminal
at
a
level
equivalent
to
50%
modulation.
(This
means
that,
when
the
Output
of
500mvV
is
obtained
with
signal
of
60dB
being
applied
at
100%
modulation
half
of
the
output
which
is
approximately
250mV
is
the
oscillating
Output).
By
utilizing
this
signal,
control
the
recording
level,
while
watching
the
meter
of
the
tape
deck
through
the
input
level
control
of
the
tape
deck.
(Note)
Be
sure
to
turn
this
switch
“OFF”
when
recording
broadcasts
or
listening
in
the
broadcasts.
ST-7300

Technics ST-7300 Specifications

General

Brand	Technics
Model	ST-7300
Category	Tuner
Language	English