Technics SU-C04

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Mi
MEASUREMENTS
AND
ADJUSTMENTS
e Setting of controls and instruments to be used.
1. Sound volume...:...0 (minimum)
2. DC voltmeter (capable to measure 5mV)
DC Voltmeter Connections Adjusting Point
L channel VR301
Between and (minus probe)
Adjustment Procedure
* Adjust VR301 (L ch.) and VR302
(R ch.) so that the voltage is 2mV,
about 1 min. after power supply ON.
R channel
Between
and
(minus
probe)
VR302
MI MESSUNGEN UND JUSTIERUNGEN =e Deuts ch =
@ Einstellungen und verwendete instrumente.
1. Lautsérke.......... 0 (Minimum)
2. Gleichstrom-Voltmeter (zum Messen von 5mV geeignent)
Einstellungen
Gleichstrom-Voltmeter
bindungen
Einstellungspunkte
Einstellungsvorgang
| L- Kanal VR301 * YVR301 (L-Kanal) und VR302 (R-Kanal)
Zwischen
und
[GZ
(Minustest)
so
justieren,
da&
die
spannung,
ca.
Ica
R-Kanal
VR302
1
Minuten
nach
dem
Einschalten
der
Zwischen und (Minustest) stromzufuthr, 2mV betragt.
Mi MESURAGES ET REGLAGES =Francais
© Réglages et appareils utilisées
1. Volume sonore...... 0 (minimum)
2.
Voltmétre
4
C.C.
(capable
de
mesurer
5mv)
Réglages
Connexions
du
voltmetre
C.C.
Point
de
réglage
Canal de gauche VR301
Ica
Entre et (sonde au moins)
VR302
e Adjustment points
* Régler VR301 (canal de gauche) et VR302
(canal de droite) de facon a ce gue la tension
soit de 2mV, environ 1 minute aprés la mise
en marche de la tension d’alimentation.
Canal de droite
Entre et (sonde au moins)
Left channel Right channel Front
ica ica
HI BLOCK DIAGRAM
Head phones
Relay
Speaker
channel.
Right
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7
Q804
Regulator
Q503,507
Current
det.
Q505,509
Synchro-
nous bias
iC801
SVITA7317P .
Speaker protection
ent det.
Q315
Over curr-
2
Bo)
te
u
g
2
Oo
:] Power
control
{IC 801}
Q3tI, 313
LF.
Relay
hold
AC in
Tone control
Cascade
Right
channel
Oiffere-
ntial amp.
Current
mirror
Q307,309
Q303,305
5 Wy
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tee
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6%
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a
&
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ax
Balance
control
te
o
=
=
oO
»
ing
(S494)
Loudness
control
vase
| Rectifier
oO
N
a
>
Volume
(S3)
Tape monitor
(S2)
source
-5.4V
source
tuner
O)
+37. 6V
-37.6V
indicator To
To power amp &
speaker protection
IC101
SVINJM4559
Operation amplifier
(1C 101)
Right channel
Q101,103
PHONO G
©
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uJ
=
=>
-
AUX
Lp. aveack G
‘(eas OUT 6
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rREC out 6
TAPE 2
TAPE |