Technics SU-V45A - Page 10

10 11 12 13 14 15 16 17 18 19
POWER AMP./CURRENT DRIVE AMP.
1C402
E | SPEAKER SELECTOR CIRCUIT
|
HEADPHONES
ze
SCH
EMATIC
DIAG
RAM
(This
schematic
diagram
may
be
modified
at any time with the development of new
technology.)
Alc402
SV14003
POWER AMP.
BRIDGE NETWORK
Note:
1. S$1-1 ~§1-4: Input selector switch in “phono” position.
S1-1: phono S$1-2: tuner $1-3: CD
S1-4: aux
$2-1: Tape 1 monitor switch in ‘‘off’’ position.
§2-2: Tape 2 monitor switch in ‘‘off position.
$3: CD direct switch in ‘‘off” position.
| (MAIN
| SPEAKERS)
|
"R458 2W330 |
(@ off, = on)
$6-2 $4: — Lowdness switch in ‘“‘off" position.
(REMOTE | off == on ( Moff, = on)
SPEAKERS)
S © 2 N ® © AWN
n a
443
C435
Tone
control
switch
in*‘defeat’’
position.
F
toes
(Mi
defeat,
=
on)
in
oa
Q417,
418
$6-1:
Main
speaker
switch
in
‘‘on”’
position.
ogi
Sa
.
2SC263!
(@
off,
on)
—
7
SoT
et
casa
RA4I
STABILIZER
$6-2:
Remote
speaker
switch
in
‘‘off"’
position.
E
ovi0o.
100
(@
off,
on)
a6!
_
:
°
as
$8:
Power
switch
in
‘‘on”’
position.
‘
tO
2s
acd
(B
off,
on)
of
T=
ath
’
io)
zt
ST
Beal
ios
10.
$701:
Voltage
selector
switch
‘‘220V"’
position.
CURRENT
(For
[XA]
areaonly)
(127V
«»110V
«+ 220V
+»240V)
:
is
STABILIZER
J8
11.
Indicated
voltage
values
are
the
standard
values
for
the
unit
measured
by
the
DC
electronic
3
0421,422
circuit
tester
(high-impedance)
with
the
chassis
taken
as
standard.
Therefore,
there
may
=
2SA992
CEGJonly
exist
some
errors
in
the
voltage
values,
depending
on
the
internal
impedance
of
the
DC
i
OVER
LOAD
DET.
Gan
rs
circuit
tester.
‘
s
Len
Phono
signal
(Lch)
i
23
MAIN
Positive
voltage
lines,
-=-==-=<-—
Nagative
voltage
lines.
\,
Sa:
|
ah
MUTING/
8
R
on
|
12.
Important
safety
notice:
2
PROTECTION
SPEAKERS
Components
identified
by
A
mark
have
special
characteristics
important
for
g
eo
safety.
When
replacing
any
of
these
components,
use
only
manufacturer’s
See
| DES
SSeS
SS
ee
SS
Sees
pe
eee
ee
et
"9
specified
parts,
or
409,410
5
REMOTE
eSC2631
1
eee
icone eee
CEERI
UTE
ee
B
AA
CLASS
AMP.
S
R
bid
S
ee
a
etn
enn
EET
SUTOOOT
ne
SUOTTE
SSO
SCE
SS
SOSSUEE
TS
oOSOUEE
enn
=
:
AN7073
|
PROTECTION
|
|
Sx
S125
Q409
ICQ
adj.
point
of
|
ihe
=n
aa
(L
ch)
oe
2
Xb:
o=
z
|
@s5ol
bs
o.6v
“|
254992
Ox
+
(P
zo
A
1)
RELAY
DRIVE
:
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cS
SQ)
fo}
8
CY
0.2V
Ee
Ra
ge
3
Lae
Lee
ee
|
3
es
3
Q407
R429
8S
2
ee
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aw
00
ZS
3
7
Peele
p.
by
e
Q415,
416
2SAI306
AA
CLASS
AMP.
2)
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R523
oes
406
EB
V/4w
|
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+
LIMITER
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ry
ALL
CLASS
AMP.
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°
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[2]
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CEK,
XLJ
&
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R430
es
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220V«--»CE, EH,
EF,E8,E1)
abl (~)=
/4W
100
gs:
POWER
SUPPLY
{50/60Hz)
oT
°
a
al
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CIRCUIT
soir
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woo
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gx
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CLASS
Q407,
408
FS
Soo
aN
2SAI309A
+8
Ss
C)
LIMITER
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R422
an)
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3.3K
8g
S
==
A=