Technics RS-EH760, Service Manual

Page: 61 / 67

B
SCHEMATIC DIAGRAM- 4
MAIN CIRCUIT
W501
W902A
W901A
CP101
G
F
E
A
C
D
C
A
B
A
6
7
8
9
10
11 C
F
G
O
M
K
C
B
J
D
C
B
A
E
D
1
2
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
17
18
19
B
B
E
F
G
H
I
A
N
L
DET
Rch IN
CE
Lch IN
DI
DO
CL
+B(2)
SD
+B(1)
T.GND
TU L/C ch
TUNER Rch
TW Lch IN
TW Rch IN
A.GND
MID Lch IN
MID Rch IN
MIC
- 7.5V
V.GND
D.GND
CS/REQ
CLK
DATA
CT.GND
SH FL1
SH FL2
SYNC
S.W
Q707
2SB1548PQAU
REGULATOR
P R Q
Q723
2SC3940AQSTA
REGULATOR
R597 2.2K
R598 2.2K
R712
2.2K
D705
RL1N4003N02
C715
25V4700
C714
1000P
C731
1000P
C741
0.1
D717- 720
RL1N4003N02
D718 D717 D720 D719
D737
MA4082L
T
A
R763
4.7K
R764
330
C733
0.047
C740
16V10
R230 1K
R229 1K
D721
MA4300MT
A
R708
4.7K
C707 0.047
C706
35V10
C737
50V100
R707
1/4W4.7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
DC 10V
To
MAIN CIRCUIT
of SOUND
PROCESSOR
To TUNER UINT
on SCHEMATIC
DIAGRAM- 9
10
4
5
C735 0.047
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R629 1K
A
B
B
A
R563
2.7K
R564
2.7K
C660
16V10
C659
16V10
R615
4.7K R614
4.7K
R631
3.9K
R632
3.9K
7
C202
0.1
R203 100K
R204
100K
6 4 2
14 13 12
5 3
15
1
9 16
C201
0.1
A
B
R202 100K
11
8
C D B
C602
16V10
R603
3.3K
Y1 Y0
Z1
Z0
INH V
SS
G
C B A
X0 X1
V
DD
IC201
BU4053BCFE2
SIGNAL SELECTOR
C708
0.047
R211
270
D201
MA4056MT
A
R626 1K
R687 1.5K
R688 1.5K
Q605,606
2SD2144STA
MUTING
Q605
Q606
R683
1K
R684
1K
R605
4.7K
R606
4.7K
R617
4.7K
C601
16V10
: SOURCE SIGNAL LINE
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
: FM SIGNAL LINE
: AM SIGNAL LINE
: SURROUND SP.DRIVE SIGNAL LINE
: CENTER SP.DRIVE SIGNAL LINE
-7.5V
14.8V
14.8V 7.2V
7.8V
-34.2V -27.6V
-28.1V
10.4V
7.5V
-7.5V
0V 0V 0V 0V 5.5V
0V 0V 0V 0V -7.5V
0V 0V
0V 0V
6.2V
7.2V
14.2V
14.8V