Technics SA-EH670 - Main Circuit Schematic

SCHEMATIC DIAGRAM-4
W902A
W901A
CP101
C
F
G
B
A
E
D
DET
Rch IN
CE
Lch IN
DI
DO
CL
+B(2)
SD
+B(1)
T.GND
Q707
2SB1417PQTA
REGULATOR
Q723
2SC3940AQSTA
REGULATOR
R763
4.7K
R230 1K
R229 1K
D721
MA4300MTA
R708
4.7K
C706
35V10
To
SOUND
PROCESSOR
(SH-EH670)
To TUNER UINT
on SCHEMATIC
DIAGRAM-9
C735
0.047
R563
2.7K
R564
2.7K
C602
16V10
C708
0.047
R687
560
R688
560
R617
4.7K
2
1
3
4
5
6
7
8
9
10
11
C655 16V10
C656
16V10
R606
4.7K
R605
4.7K
2
15
3
4
5
6
7
8
9
10
11
12
13
14
1
2
15
3
4
5
6
7
8
9
10
11
12
13
14
1
20
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
K
L
M
I
J
C
D
E
F
G
E
F
G
A
B
C
D
A
B
C601
16V10
R598
2.2K
R597
2.2K
B
C
D
C509
0.01
C510
0.01
R693
1K
R692
1K
C664
16V10
C725
16V47
A
C
R696
47K
Q609,610
2SD2144STA
MUTING
Q609
Q610
Q612
UN411FTA
MUTING CONT.
B
C
R694
22K
R511
47
R509
47
R512 47 R510 47
W501
D719
RL1N4003N02
D720
RL1N4003N02
D717
RL1N4003N02
D718
RL1N4003N02
H
D
C
R695
470
D611
MA4051MTA
C740
16V10
C733
0.047
D737
MA4082LTA
R764
330
MAIN CIRCUIT
B
C731
1000P
C741
0.1
TUNER Lch/C
TUNER Rch
A.GND
Lch IN
Rch IN
+B(10V)
SUR L
SUR R
S.W
MIC
- B( - 10V)
V.GND
D.GND
CS/ REQ
CLK
DATA
CT GND
SH FL1
SH FL2
SYNC
R603
3.3K
A
B
B
A
C715
4700
C714
1000P
D705
RL1N4003N02
A
D
C737
100
C707
0.047
D
R604
3.3K
R618
4.7K
R685
1K
R686
1K
Q607, 608
2SD2144STA
MUTING
Q607Q608
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
: FM SIGNAL LINE
: AM SIGNAL LINE
14.7V
10.4V
- 37.3V - 30.1V
- 30.7V
14.7V7.2V
7.8V
- 10V
- 10V
0V
0V
- 10.2V
5.1V
4.9V
:AUDIO SIGNAL LINE
6V
7.2V
7.6V
- 10.4V
0.7V
0V
0.7V
0V