Technics SC-EH760 - Page 51

OPERATION CIRCUIT
A
SCHEMATIC DIAGRAM- 3
ABC
B
C
W901B
W902B
L
K
J
I
H
G
E
D
C
B
A
T
M
N
O
P
Q
S
R
IC151
LC72721NMTLM
RDS SIGNAL
DEMODULATOR
EFA
VR901
EVQVBXFK124B
(VOLUME)
1 2 3
R945
100
R943
100
R962
22K
R961
22K
C909
1000P
C917
0.01
C918
6.3V100
R946
1K
Z901
RCDGP1U28XD
(REMOTE SENSOR)
1
2
3
X151
C156
47P
C157
47P
C154
560P
C158
6.3V47
L151
100 H
C152
330P
C151
16V10
R158
1K
R151
1K
R152
1K
R154
100K
R153
100K
C155
1000P
C153
1000P
C160
1000P
C159
6.3V47
L152
100
H
R155
120
D151
MA4051MTA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
VREF STDBY
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
MPX IN
VDD
VSS
FL OUT
CIN
T1
T2
PCL
X OUT
T3
IDR
RDCL
RDDA
RDS- ID
T4
V
DD
VSS
XIN
BA
COM
D
D907
MA165TA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
D956
SELS5923C
(TRI-AMPLIFIER)
R984
220
R923
22K
10K
4.7K
Q902
UN411FTA
MUTING CONT.
U
F
L153
1
H
: SOURCE SIGNAL LINE
: POSITIVE VOLTAGE LINE
: NEGATIVE VOLTAGE LINE
- 27.6V
7.2V
5.1V
5.2V
2.5V2.6V
5.1V
3V
2.4V
2.5V
2.5V
2.5V
2.5V
5.1V
0V0V