Controller Audio Power Amplifier Schematic Diagram - Motorola GP328 Detailed Service Manual

UNSWB+
C475
10uF
U420
R499 TDA8547
R423
10K
20 11
82K
C447 R472
16
0.1uF 6.2K IN1POS
17
AUDIO
IN1NEG
15
IN2POS
R431
14
R498 IN2NEG
470K
C448
R424 10K
0.1uF 36K
6
SELECT
4
MODE
5
SVR
C476
10uF
SWB+
C450
R471
0.1uF
5.6K
NU
Q410
6 4
1 2 3
AUDIO_PA_ENA
C474
.01uF
R473
10
C442
0.1uF
3
OUT1POS
18
OUT1NEG
8
OUT2POS
13
OUT2NEG
2
NC1
7
NC2
C477 C478
9
NC3
12 1000pF 1000pF
NC4
19
NC5 EXT_MIC
5V
Vdda
EXT_SPKR_SEL
OPT_SEL2
C443
L401
0.1uF
390nH
C445
R435
470pF
2K
R434
330
SCI_RX
C444
C446
470pF 100pF
SCI_TX
R436 R421 L400
0 2K 390nH
RSSI
C441 FLAT_RX_SND
C440
470pF
4.7uF
BOOT_CTRL
INT_MIC
C497
VR432
470pF
5.6V
M401
SWB+
OPT_SEL1
R450
C471
68
470pF C472
C473
470pF
470pF
R477
1K
VR433
C493
VR450
5.6V
C496 100pF
10.0V C490
C495
470pF
470pF
C494
470pF
100pF
ZMY0130545-A

Controller Audio Power Amplifier Schematic Diagram

4-27
VR447
10.0V
VR448 VR449
C483 C484
10.0V 10.0V
470pF 470pF
J403
20 PIN CONN
GND
J403-1
J403-2 INT_SPK+
J403-3
INT_SPK-
J403-4
EXT_SPK+
J403-5 EXT_SPK-
J403-6
OPT_B+
J403-7
EXT_MIC
J403-8 OPT_SEL_2
J403-9 OPT_SEL_1
J403-10 GND
RX_DATA
J403-11
J403-12
TX_DATA
J403-13 GND
RSSI
J403-14
RX_AUDIO/TX_AUDIO
J403-15
BOOT_CTRL
J403-16
NC
J403-17
MIC
J403-18
GND
J403-19
VR434
GND
J403-20
6.8V
VR460
6.8V
C492
470pF
C491
470pF