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

4-34
C475
10uF
R423
82K
20
C447
R472
.022uF 16
6.2K IN1POS
17
AUDIO IN1NEG
15
IN2POS
R431
14
IN2NEG
470K
C448
U420
R424
0.1uF
36K TDA8547
6
SELECT
4
MODE
5
SVR
C476
10uF
SWB+
C450
R471
5.6K
0.1uF
Q410
6 4
1 2 3
AUDIO_PA_ENA
6 4 Q411
NU
1 2 3
R499
5V
10K
NU

Controller Audio Power Amplifier Schematic Diagram

UNSWB+
R473
10
C442
0.1uF
11
VCC2
3
OUT1POS
18
OUT1NEG
8
OUT2POS
13
OUT2NEG
2
NC1
7
C443
NC2
9 0.1uF
NC3
12
NC4
EXT_MIC
19
NC5
1 10
R434
330
5V
R436
1K
Vdda
EXT_SPKR_SEL
M401
OPT_SEL2
L401
390nH
C445
R435 100pF
2K
SCI_RX
C438
C444
2.2uF
100pF
SCI_TX
L400
R421 390nH
RSSI
2K
FLAT_RX_SND
C440
C441
2.2uF 100pF
BOOT_CTRL
INT_MIC
VR432
C497
5.6V
C496
100pF
100pF
SWB+
OPT_SEL1
R450
68 C471
C472
100pF
C473
100pF
100pF
R477
1K
C493
VR450
C495 VR433 100pF
10.0V
5.6V
C494
100pF
100pF
VR448
VR449
VR446
VR445 VR447
10.0V 10.0V
10.0V
10.0V 10.0V
J403
20 PIN CONN
J403-1
GND
J403-2 INT_SPK+
J403-3
INT_SPK-
J403-4
EXT_SPK+
J403-5
EXT_SPK-
J403-6
OPT_B+
J403-7 EXT_MIC
OPT_SEL_2
J403-8
OPT_SEL_1
J403-9
J403-10 GND
J403-11
RX_DATA
J403-12
TX_DATA
J403-13
GND
J403-14
RSSI
J403-15 RX_AUDIO/TX_AUDIO
J403-16 BOOT_CTRL
J403-17 NC
J403-18 MIC
J403-19 GND
VR434
J403-20 GND
6.8V
C490
100pF
C492
100pF
C491
100pF
FL0830462O