Mic Circuit - Panasonic SA-MAX9000 Series Service Manual

5.7.

Mic Circuit

1 2 3
SCHEMATIC DIAGRAM - 20
A
D MIC CIRCUIT
: +B SIGNAL LINE
B
C
D
CN1401
PW_XSW12R0V 9
MIC_IN 8
A
MIC_DET_2 7
TO
E
MIC_DET_1 6
MAIN (IO EXPANSION)
CIRCUIT (P1803) MIC_GND 5
MPORT_IN_R 4
IN SCHEMATIC
DIAGRAM - 1 MPORT_GND 3
MPORT_IN_L 2
MPORT_DET 1
F
G
H
1 2 3
4 5 6
: AUX/MIC SIGNAL LINE
C1431 4700P
R1417 4.7K
C1425
0.01
C1429 C1428
R1413 C1432 R1414
50V0.1 50V4.7
680 50V4.7 560
C1430 C1426 R1415
47K
47P 50V1
7 6 5 4 3 2 1
C1AB00003130
MIC AMPLIFIER
R1421 8 9 10 11 12 13 14
220
C1438
50V0.1
R1419
100K
C1409 4700P
R1403
R1404 4.7K
100
C1403 C1404
50V0.1 50V0.1
R1411
C1407
560
0.01
C1402 C1406 R1401 R1402
R1412 C1401
47P 50V1 47K 560
680 50V4.7
R1422 0
7 6 5 4 3 2 1
IC1401
C1AB00003130
MIC AMPLIFIER
R1420
8 9 10 11 12 13 14
220
C1415
50V0.1
R1406
100K
LB1405
LB1406
LB1407
4 5 6
7 8 9
C1424 R1416
50V1 100
IC1400
1
VR1400
2
MIC VOL2
3
1
VR1401
2
MIC VOL1
3
JK1403
1
8
7
3
MIC 2
LB1400
R1400
680 J0JBC0000019
2
R1409
0
C1400
4
1000P
C1441
0.01
5
C1408 JK1401
50V1
1
8
7
3 MIC 1
R1408 LB1404
680 J0JBC0000019
2
R1410
R1407 C1417 0
560 1000P
4
C1416
0.01
5
JK1402
1
5
4
J0JBC0000019
3 AUX IN 4
J0JBC0000019
2
J0JBC0000019
6
C1421 C1422 C1423
0.01 330P 330P
7
7 8 9
17
10 11 12 13
SA-MAX9000GM/GS MIC
10 11 12 13
14
A
B
C
D
E
F
G
CIRCUIT
H
14