Technics SH-DV290EG Service Manual page 25

: NEGATIVE VOLTAGE LINE
A
OPERATION CIRCUIT
: POSITIVE VOLTAGE LINE
5.1V
VR901
EVQVBXFK124B
(VOLUME)
COM B A
1 2 3
R946
1K
D E A
IC151
C1BB00000527
RDS SIGNAL
DEMODULATOR
C
C151
16V10
2.5V
1 VREF IDR 16
2.5V 2.6V
2 HPX IN RDCL 15
2.6V
5.1V
3 V DD A RDDA 14
0V
VssA RST
4 13
2.5V
FL OUT MODE
5 12
2.5V
5.1V
6 C IN V D 11
DD
7 TEST VssD 10
2.7V 2.5V
8 X OUT X IN 9
X151
(4.332MHz)
C152
330P
13 14 15
: AUDIO SIGNAL LINE
: TUNER SIGNAL LINE
R941
1K
Z901
B3RAD0000028
Q902
(REMOTE SENSOR)
UN411FTA
MUTING CONT. R974
3 1K
3.3V 3.3V
2
1 0V
M
A
B
C
D
E
F
G
H
I
J
K
L
D906
MA165TA
B
D907
MA165TA
R
N
O
Q
6V
R966 R965
3.9K 3.9K
S
P
L151
100 H
R158
1K
16 17
B
MAIN CIRCUIT
W501
TUNER Lch/C
1
TUNER Rch
2
R511 R509
A.GND
3
47 47
Lch IN
4
R512 47 R510 47
Rch IN
5
+B(10V)
6 10.4V
SUR L 7
SUR R 8
S.W 9
To
MIC 10
SOUND
PROCESSOR -B(-10V) 11
(SH-DV290)
V.GND 12
D.GND 13
CS/ REQ 14
CLK 15
DATA
16
CT GND
17
A B C
SH FL1
18
SH FL2
19
SYNC
20
W902B W902A
15
15
14 14
13 13
12 12
11 11
10 10
9 9
8 8
7 7
6 6
5 5
4 4
3 3
2 2
1
1
W901A
W901B
15 15
14 14
13 13
12 12
11 11 6V
10 10
9 9
8 8
7 7
6
6
5 5
4 4
3 3
2 2
1 1
Z101
RAN0005EM-2
(TUNER PACK)
CP101
T.GND 1 1
+B(1) 2 2
SD 3 3
+B(2) 4 4
R230
DET 5 5
1K
Rch 6 6
7 7
CE
R229 1K
8 8
Lch
DI 9 9
DO 10 10
CL 11 11
18 19 20
7.6V
H
-10.4V
G
A
B
R597 C659 R631
2.2K 16V10 3.9K
C660
A R598 R632
16V10
2.2K 3.9K
B
C
D
0V
1 2 3 4
Y1 Y0 Z1
B
E
F
G
V X1
DD
16 15 14 13
5.7V 0V 0V 0V
R211
270
C
D
H
E
G
F
F
G
E
F
J
C
B
K
D
A
E
Q605,606
0.7V
L 2SD2144STA
M MUTING
Q707 Q605
2SB1417PQTA
I
REGULATOR -10V
-30.1V -37.3V
-30.7V
A
Q609,610
2SD2144STA
B
A MUTING
Q609
C
0V
B
Q610
0V
C
D705
RL1N4003N02
Q723
2SC3940AQSTA
REGULATOR D718
7.2V 14.7V RL1N4003N02
D717
G RL1N4003N02
7.8V
R764 R763
330 4.7K
C731
1000P
B
F
D720
A RL1N4003N02
E
D D719
RL1N4003N02
C
14.7V
SA-DV290(E,EB,EG) OPERATION, MAIN CIRCUIT DIAGRAM
21 22
A
B
C202
0.1
0V -10.4V
5 6 7 8
Z0 INH Vss G
IC201
BU4053BCFE2
SIGNAL SELECTOR
B C
X0 A
12 11 10 9
0V 0V
R603
3.3K
C656 R688
16V10 1.5K
C655 R687
16V10 1.5K
C602
16V10
R695
470
0V
5.1V
0V
4.9V
Q612
-10.2V
Q606
UN411FTA
MUTING CONT.
R693
1K
-10V
R692 R694
1K 22K
-10V
H
A
D
C
23 24