JVC TH-S77 Service Manual page 35

Mic input section
MIC IN 1
J 7 0 0 1
Q N S 0 2 3 1 - 0 0 1
R 7 1 0 3
2
3 1 k
0 . 4 7 / 1 0
R 7 1 0 1
1
7 4 . 7 k
0 . 4 V
Q 7 4 0 2
2 S C 3 6 6 1 - X
MIC IN 2
0 V
2
3 R 7 1 0 2
4 . 7 k
1
7
J 7 0 0 2
K 7 0 0 1 R 7 1 0 7
Q N S 0 2 3 1 - 0 0 1
N Q R 0 0 0 7 - 0 0 2 X
( B 7 1 0 2 ) 2 . 7 k
1
W 7 0 0 1
Q U B 2 2 0 - 1 0 D M H P
R 7 2 0 1
MIC
VOLUME
1 k
MIC AMP
1 0 . 6 V
C 7 1 0 1
I C 7 0 1
3
8 C 7 4 0 1
R C 4 5 5 8 D - X
5 . 3 V
1
5 . 3 V
5 . 3 V
4 3 . 3 / 2 5
2 0 V
C 7 1 0 2
8 2 p / 5 0
0 V
R 7 1 0 5
5 6 0 k
R 7 4 0 4
1 0 k
Q 7 4 0 1
K T C 3 8 7 5 / Y G / - X
1 1 . 3 V
C 7 1 0 4
0 V
1 / 5 0
R 7 2 0 2
1 0 k
C 7 2 0 1
I C 7 0 1 C 7 2 0 2
5
R C 4 5 5 8 D - X 1 / 1 0
5 . 3 V
5 . 3 V
0 . 2 2 / 1 6
7
5 . 3 V
6
BUFFER
TO MAIN PWB
CN460 OF
GVA10097-A1
(SHEET 2)
C N 7 6 0
Q G F 1 2 0 5 F 1 - 0 9 W I T H M I C
Q G F 1 2 0 5 F 1 - 0 5 W I T H O U T M I C
C 7 6 0 4
0 . 0 1 / 5 0
R 7 4 0 1
R 7 6 0 2
C 7 6 0 3
1 5 k
0 . 4 7 / 1 0
1 k
C 7 6 0 2
0 . 0 1 / 1 6
C 7 6 0 6
1 / 1 0
8 7 6 5 4 3
D 7 4 0 2
1 S S 3 5 5 - X
R 7 4 0 3
1 0 k
9 1 0 1 1 1 2 1 3 1 4 1 5
C 7 6 1 0
0 . 0 1 / 5 0
R 7 6 0 3 R 7 6 0 5
C 7 6 1 1
1 5 k 1 0 k
0 . 1 / 1 6
C 7 6 0 8
0 . 0 1 2 / 5 0
FOR U VERSION ONLY EXCEPT CN701,D511 AND R511
GVA10096-A6
MIC PWB
S T A N D B Y L E D
2 1
1 6
C 7 6 1 2
1 2 0 p / 5 0
SHEET 6
2-7