Mic Circuit - Panasonic SA-MAX8000GN Service Manual

12.21. Mic Circuit

1 2 3
SCHEMATIC DIAGRAM - 20
A
G MIC CIRCUIT
: +B SIGNAL LINE
B
C
CN1401
PW_XSW12R0V 9
MIC_IN 8
A
MIC_DET_2 7
TO
MIC_DET_1 6
MAIN (IO EXPANSION)
CIRCUIT (P1803) MIC_GND 5
D
MPORT_IN_R 4
IN SCHEMATIC
DIAGRAM - 1 MPORT_GND 3
MPORT_IN_L 2
MPORT_DET 1
E
F
G
H
1 2 3
4 5 6 7
: AUX/MIC INPUT SIGNAL LINE
C1409 4700P
R1403
R1404 4.7K
100
C1403 C1404
50V0.1 50V4.7
C1407
0.01
C1402 C1406 R1401 R1402
R1412 C1401
47P 50V1 15K 2.2K
680 50V4.7
7 6 5 4 3 2 1
C1408
50V2.2
IC1401
C1AB00003130
MIC AMPLIFIER
R1420
8 9 10 11 12 13 14
220
C1415
R1408 LB1404
50V0.1 680 J0JBC0000019
R1406 R1407
100K 560
LB1405 J0JBC0000019
LB1406 J0JBC0000019
LB1407 J0JBC0000019
C1418 C1419 C1420 C1421
0.01 0.01 0.01 0.01
4 5 6 7
8 9 10
1
VR1401
2
MIC VOLUME CONTROL
3
JK1403
1
K1400
0
8
7
3
MIC
2
R1409
0
4
C1441
0.01
5
K1401 K1402
0 0
C1417
1000P
JK1402
1
7
6
3
AUX IN 2
2
4
C1422 C1423
330P 330P
5
8 9 10
66
11 12 13 14
SA-MAX8000GN MIC CIRCUIT
11 12 13 14
A
B
C
D
E
F
G
H