Technics SA-EH770 - Page 61

SCHEMATIC DIAGRAM-3
W901B
W902B
1 2 3
BA
COM
Q902
UN411FTA
MUTING CONT.
ABC
R962
22K
VR901
EVQVBXFK124B
(VOLUME)
R945
100
R961
22K
R943
100
C917
0.01
D907
MA165TA
M
R946
1K
C909
1000P
C918
6.3V100
B
C
A
R941
1K
A
B
C
D
E
F
G
H
I
J
K
L
N
O
Q
S
T
A
OPERATION CIRCUIT
R942
2.2K
R974
1K
C931
16V10
R965
3.9K
R966
3.9K
D961
MA4075MTA
R975
22K
D906
MA165TA
U
N
1
2
3
Z901
B3RAD0000028
(REMOTE SENSOR)
R
P
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
: POSITIVE VOLTAGE LINE : NEGATIVE VOLTAGE LINE
-30.1V
5.1V
:AUDIO SIGNAL LINE
6V
7.6V
3.3V
0V
3.3V
:MIC SIGNAL LINE