Motorola PRO3150 Manual De Servicio página 67

R423
470K(UHF),47K(VHF)
C447
R472
0.1uF
36K(UHF),3.6K(VHF)
AUDIO
Vddd
R467
10K
Q433
AUDIO_PA_ENA
UNSWB+
C475
10uF
U420
TDA8547
20 11
16 3
IN1POS OUT1POS
17 18
IN1NEG OUT1NEG
15 8
IN2POS OUT2POS
14 13
IN2NEG OUT2NEG
2
NC1
6 7
SELECT NC2
4 9
MODE NC3
5 12
SVR NC4
19
NC5
C476
10uF
C450
NU
Vdda
Q410
6 4
5V
1 2 3
INT_SPN
C489
NU
R473
10
C442
0.1uF
C470
100pF(UHF),NU(VHF)
C486 C488
NU
NU
MIC_LINE
SWB+
R471
5.6K
R438
0
R434
NU
C440
4.7uF
INT_MIC
1
2
3
4
C471 C472
100pF
100pF
Speaker/Mic Connector
SPP
SPN
C485 C483 C484
100pF 100pF 100pF
C473
470pF
R435
2K
Vddd
R436
47K(UHF),180K(VHF)
R495
Q420 100K
R496
Q421
100K
R439
100K
Figura 4-12b. Diagrama esquemático de la interfaz del controlador
4-15
J402
J402-1 GND
INT_MIC
J402-2
J402-3 INT_SPN
J402-4 SPP
L400
390nH
MIC
PTT_MIC
ZMY0130302-B