Sansui A-M90 Service Manual page 11

Integrated servo amplifier
Table of Contents

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4.
SCHEMATIC DIAGRAM
4-i.
Pre
Amp.
Section
0
'Design and
specifications subject to
change
without
notice for
improvement.
*La
presention
et
les
specifications
sont
susceptibles
d'etre
modifiees
sans
preavis par suites d'ameliorations
eventuelles.
'Anderungen,
die
dem
technischen
Fortschritt dienen, bleiben
vorbehalten.
F-43 83
I
,
F-3725
I
I
iR2
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30
ho
2I
.
,
2^
470
IQ/50
EQ(i)
HCIM52I8L
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6
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510
22k
300k
n
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3T
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T3
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470P
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(FTZ
only)
CONTROL
(]
:
oj
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iili
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go
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2SA992
g02
2SC2320L
MIC
(g)
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-
(SELECTOR TUNER
POSITION)
o0l'3,
5,
7,8,12
oQ4,6,9'i
1,13-18
nLDI.2,4
2SC2458
2SAI048
TLS-123
oR4
6
2SC2603
2SA1II5
SEL22IOE
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2°^'
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nLD3,5
x.
1S2473
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(
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680
79!
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680
on
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il
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''50
«
I
SYMBOL
OF FUNCTION
(g)
MIC
(i)
EQ
(j
)
CONTROL
(k)
POWER
AMP
(m)
POWER
SUPPLY
(n)
INDICATOR
(
0
)
SELECTOR
(p)
FIXED
PARTS
'
L
J
I
}
I
nR7 820
[~
0015
F-4385
0DI6
oDI7
A
1
1
a2
A3
1
T
m
AaJ
J[A4
h+
k
(i
C)
I
I
nPU®'j^2-2
|
iNDICATOR(n)
»
I
I
F-
4
3
861
46
1
I
I
SELECTOR
LOUDNESS
oSI
PHONO
oS6o,b
l.OFF
2.
ON
fs3
Auf/DA
oS4
TAPE-1
2-°'^'^
oS5a~c TAPE
-2
l.OFF
2.
ON
Signal Line
N.F.B. Line
2SA992
2SA1048
2SC1845 2SA1115
2SC2320 2SC2458
2SC2603
2SA1106
2SC2581 2SB631K
2SD600K
LC7815H
STK3082-2A
SEL2210S
05Z5.1-Y
SEL2410E 05Z13Y
TLG123A
05Z24-Y
TSL-123
RD12FB
1^
+
1S1588
1S2473T77
10E-2
30D-2
8

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