Mic Circuit - Panasonic SA-MAX3500PU Service Manual

12.19. Mic Circuit

1 2 3
SCHEMATIC DIAGRAM - 18
A
G MIC CIRCUIT
: +B SIGNAL LINE
B
C
D
E
CN1401
PW_FL_SW12V
A
TO
MAIN (IO EXPANSION)
CIRCUIT (P1803)
IN SCHEMATIC
DIAGRAM - 3
F
G
H
1 2 3
4 5 6
: MIC SIGNAL LINE
PW_FL_SW12V
6
MIC_GND
MIC_GND 5
MIC_IN
MIC_IN 4
MIC_DET_2
MIC_DET_2 3
MIC_DET_1
2
MIC_DET_1
MIC_GND
MIC_GND 1
PW_FL_SW12V
MIC_DET_2
MIC_DET_1
MIC_GND
MIC_IN
MIC_GND
4 5 6
7 8 9 10
C1428
50V4.7 C1425
0.01
C1427
50V1
R1415
R1413 C1430 R1414
C1432
6.8K
680 47P
50V4.7 100
C1424
7 6 5 4 3 2 1 50V2.2
8 9 10 11 12 13 14
R1435
C1438
50V0.1
R1421 0
220
R1419
100K
LB1401
0
C1407
0.01
C1402
47P
C1405 R1401
R1412 C1401 R1402
6.8K
50V1
680 50V4.7 100
C1408
50V2.2
7 6 5 4 3 2 1
C1AB00003130
8 9 10 11 12 13 14
R1420
220
R1433 C1415
0 50V0.1
C1411
16V10
C1412
16V10
7 8 9 10
74
11 12 13
JK1403
MIC 2
R1400 LB1400
330 J0JBC0000019
R1409
0
R1411
C1445
270
1
C1441
0.01
LB1405 R1422
0 0
JK1401
IC1401
MIC AMPLIFIER
MIC 1
LB1404
R1408
330 J0JBC0000019
R1410
0
C1444
R1407
1
270 LB1406
C1416
0
0.01
R1423
0
SA-MAX3500PU
11 12 13
14
A
B
C
D
E
F
G
H
14