Vhf 2 (146-174 Mhz) 25-45 W Dc And Audio Circuits (Sht 1 Of 2) - Motorola Radius CM200 Service Manual

4-14
IF501
1
COMP_B+ IF503
C1113
220pF
B+
C5000
1000pF
BATT_SENSE
IF500
1
FILT_SW_B+
C1085
C1128
220pF
1000pF
EMERGENCY_ACCES_CONN
R5036
EMERGENCY_SENSE
47K
DC_POWER_ON
D3_3V
R5035
47K
Q504
ONOFF_SENSE
Smart Fuse Circuit
IGNITION
VHF 2 (146–174 MHz) 25–45 W DC and Audio Circuits (Sht 1 of 2)
L120
spacer for TO-22 0
C1097 C1088 C1098 C1114
35U02
M6
1000pF 1000pF 1000pF 220pF
SOURCE
FILT_B +
L500
35U02
C5061 C5084 C5086 VR500 C5067 C5060 C5083 C5085 C5001
24V
0.1uF 100pF .022uF 1000pF 0.1uF 100pF .022uF
10uF
TP500
FILT_SW_B+
TEST_POINT
1
U514
R5000 R5031
0 62K
C5094
VR504
C5062
R5050
C5063
220pF C5092
13K
0.1uF
3.3V
220p F 0.1uF
FILT_B +
R5020
150K
R5030
33K
R5062 Q502
Q506
10K
VR503
C5037
R5049
15K
0.1uF
3.3V
TP556
TEST_POINT
D511
1
R5069
10K
C5119
10uF
Indirect Audio Volume
C5104
10uF
6 4
5
S5010
SWITCH
50.K
D3_3V
2 3
1
R5079
R5071
100
2.2K
VOL_INDIRECT
C5035
Place near uP
0.1uF
D50 0
FILT_B +
R5074
1K
R5039
100K
D513
VR501
R5082
R5083
5.1V
270K C5111
51K
1000pF
R5089
Q500 1MEG R5085
Q503
DNP 1MEG
DNP
POWER SUPPLY
SOURCE
9V
U501
LM2941T
4 5 9.3V
VI N VOUT
2 1
ON_OFF ADJ C5005 C5074 C5095 C5096
C5015
R5081
GND 6.34K
100uF 0.1uF 1000pF 220pF 220pF
1%
3
R5038
33K
R5001
1K
1%
5V RF Regulator
TP555
1
TEST_POINT U503
LP2951C
8
On/Off for ATE
INPUT OUTPUT
7 FEEDBACK
ERROR
3
SHUTDOWN SENSE
5V_TA P
D502
GND
4
R5028
100K
R5029
100K
3.3V RF REGULATOR
U508
MC33269D
3 2
IN
OUT
GND
C5066 1
C5043
1uF
1000pF
3.3v Digital REGULATOR
Q505
R5037
U510
10K
LP2986ILDX
4 INPUT
OUTPUT
8 SHUTDOWN
ERROR 7
6 SENSE
FEEDBACK
3
TAP
C5041 C5065
GND1 GND2
1000pF
2.2uF
1
9
FILT_B+
R5103
DNP
24K
VR502
C5115 6.8pF
DNP
R5093
10K
R5092
8
2
DEMOD
10K 3
4
5V
C5113
U500-1
LM2904
220pF
R5095
DNP
24K
C5114
R5096
1uF
10K
VHF 25–45 W Band 2 PCB 8486487Z03-B / Schematics
AUDIO POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BR
IF502
9.3V 1
9V
FLAT_TX_AUDIO_INPUT_ACCESS_CONN
C1087 C1034 C1122 C1123 C1125
C1124 C1127
220pF
1000pF 220pF 220pF 220pF 220pF
100uF
SOURCE
5V
1
5V TO LVFRACN
5
2
6 For mid_band
DNP
C5068 R5002 0
C5006 C5016
5V_C H
1000pF C5040 C5039
10uF 0.1uF
0.1uF 0.1uF
DNP
DNP
SOURCE
3V
3.3V to IFIC, ASFI
C5008 C5018 C5070
0.1uF 1000pF
10uF
RESET
SOURCE
3.3v digital
D3_3V
5
D3_3V
2
C5017 C5069 C5007
0.1uF 1000pF
47uF
D501
VSTBY
C512 0
DNP
47uF
DNP
DNP
R5097
0
NU
16pF
C5117
DNP
R5099
5V
DNP
100K
C5118
R5094
1 8
6
R5100 0.1uF
7
1MEG
5
1MEG
4
C5116 DNP
U500-2
220pF
LM2904
DNP
R5098
DISC
0