Figure 7-7. Audio Power Amplifier And External Audio Schematic Diagram - Motorola EP350 Service Manual

7-8
+3.3V
R131 10R
C1038 C100
47pF 1uF(1608)
R1001
10K
C114
C112
220pF
10uF/16V
R1003 10K
RX_AF1
+
R1002
9.1K
C113
560pF

Figure 7-7. Audio Power Amplifier and External Audio Schematic Diagram

BEEP
C602
0.22uF(K)
C1026 C623
47pF 47pF
C620
330pF
R623 560R
AUDIO_MUTE_CON
Q601
KRC404
POP_CON
Q602
KRC404
SW/VOL1
RY8418
1
2
1
3
2
4
3
5
4
5 6
7
6
8
7
9
8
9 10
11
10
11 12
12
C615
0.22uF (K)(1608)
C619 33pF
390K(1608)
R614
R613
U601
15K(1608)
R619
4 5
IN-
OUT-
10K
6
3
VCC
IN+
2 7
SVR GND
R609 1K
R622 0R
1 8
MODE OUT+
+
TDA8541
R608
C618
NA
4.7uF / 16V(A)
R620
33K
R621
C606
39K
0.1uF
Circuit Board/Schematic Diagram and Parts List (UHF2: 435–480 MHz)
J603
SPK1
R615
53047-0210
SM3624X1
2R2
+
C616
C617
0.1uF(K)
0.1uF(K)
-
R616
L601 2.2uH(1608)
0R
L602 2.2uH(1608)
R610
C621 C622
2R2
330pF 47pF
C609
0.1uF(K)
SWB+
C601
0.1uF
J601
0980683Z01
1
3
2
4
5
6
7