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

VHF 25–45 W Band 2 PCB 8486487Z04 / Schematics
IF501
1
COMP_B+ IF503
L120
C1113 C1097 C1088 C1098 C1114
35U02
220pF 1000pF 1000pF 1000pF 220pF
SOURCE
FILT_B +
L500
B+
35U02
C5000 C5061 C5084 C5086 VR500 C5067 C5060
24V
1000pF 0.1uF 100pF .022uF 1000pF 0.1uF
TP500
BATT_SENSE TEST_POINT FILT_SW_B+
1
IF500
1
FILT_SW_B+
R5000 R5031
0 62K
C1085 C5094
C1128
VR504
C5062
R5050
220pF 220pF C5092
1000pF 13K
0.1uF
3.3V
220p F
FILT_B +
R5020
150K
R5030
33K
EMERGENCY_ACCES_CONN
R5062 Q502
Q506
R5036 10K
EMERGENCY_SENSE
47K
VR503
C5037
R5049
15K
3.3V 0.1uF
TP556
TEST_POINT
D511
1
DC_POWER_ON
D3_3V
R5035
47K
Q504
ONOFF_SENSE
Indirect Audio
C5104
10uF
6 5 4
S5010
SWITCH
50.K
D3_3V
2 3
1
R5079
R5071
100
2.2K
Smart Fuse Circuit
D500
FILT_B +
R5074
1K
R5039
100K
D513
VR501
IGNITION R5082
5.1V
51K
R5089
1MEG
Q500
DNP
POWER SUPPLY
spacer for TO-22 0
M6
U501
LM2941T
5
4
VIN VOUT
2 1
C5005
ON_OFF ADJ C5015
R5081
GND 6.34K
0.1uF
100uF
1%
3
C5001 R5038
C5083 C5085
33K
R5001
100pF .022uF
10uF
1K
1%
TP555
1
TEST_POINT
On/Off for ATE
U514
D502
R5028
100K
C5063
0.1uF
R5029
100K
C5043
1uF
3.3v Digital REGULATOR
R5069 Q505
10K
C5119
R5037
10K
10uF
C5041 C5065
Volume
2.2uF 1000pF
VOL_INDIRECT
C5035
Place near uP
0.1uF
DEMOD
5V
R5083
R5095
270K C5111
24K
1000pF
R5085
Q503
1MEG
DNP
R5096
10K
VHF 2 (146–174 MHz) 25–45 W DC and Audio Circuits (Sht 1 of 2)
SOURCE
AUDIO POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BR
9V
IF502
9.3V 9.3V
1
9V FLAT_TX_AUDIO_INPUT_ACCESS_CONN
C5074 C5095 C5096 C1087 C1034 C1122 C1123 C1124 C1125 C1127
220pF
220pF 220pF
1000pF 220pF 1000pF 220pF 220pF 220pF 100uF
5V RF Regulator
SOURCE
5V
U503
LP2951C
8 1
INPUT OUTPUT
5V TO LVFRACN
7 FEEDBACK
5
ERROR
3 2
SHUTDOWN SENSE
For mid_band
6
DNP
5V_TA P
C5006 C5016 C5068 R5002 0
GND
5V_C H
4
1000pF C5040 C5039
10uF 0.1uF
0.1uF 0.1uF
DNP
DNP
SOURCE
3.3V RF REGULATOR
3V
U508
MC33269D
3 2
IN
OUT 3.3V to IFIC, ASFI
GND
1
C5066
C5070
C5008 C5018
1000pF
0.1uF
1000pF
10uF
RESET
SOURCE
3.3v digital
D3_3V
U510
LP2986ILDX
4 INPUT 5
OUTPUT
D3_3V
8 SHUTDOWN ERROR 7
6 SENSE 2
FEEDBACK
3
TAP
C5017 C5069 C5007
GND1
GND2
0.1uF 1000pF
47uF
1 9
FILT_B+ D501
R5103
VSTBY
DNP
C512 0
24K
VR502 DNP
47uF
DNP
DNP
R5097
0
NU
C5115
6.8pF C5117 16pF
DNP DNP
R5093
R5099
5V
DNP
10K 100K
R5092
8 C5118
2
R5094
1 8
6
R5100
10K 7 0.1uF
3
1MEG 5
4
1MEG
4
C5113 DNP
C5116
U500-1
LM2904 U500-2
220pF 220pF
LM2904
DNP DNP
R5098
C5114
0
1uF
4-39
DISC