Uhf2 (438-470 Mhz) 25-40 W Dc And Audio Circuits (Sht 1 Of 2) - Motorola CM200 Service Manual

4-42
B+
FILT_SW_B+
EMERGENCY_ACCES_CONN
EMERGENCY_SENSE
Come from Pin GCB2 of ASFIC

UHF2 (438-470 MHz) 25-40 W DC and Audio Circuits (Sht 1 of 2)

L120
1
57R01
IF502
COMP_B+
IF503
1
C1097 C1114
C1113 C1088 C1098
SOURCE
39.p 39.p 39.p
120.p 120.p
FILT_B+
L500
1019447
VR500
28.0
C5084 C5086
C5000 C5061
1n 100.n 120.p 22.n
10.u
C5085
C5067 C5060 C5083
C5004 C5001
22.n
100.n 120.p
1n
DNP 10.u
C5094
TP500
220.p
FILT_SW_B+
TEST_POINT
IF504
U514
1
R5031
C1128
39.p
C5062
62.K
100.n R5028
C1085 C1096 C1132
100.K
39.p 39.p
39.p
R5050
VR504
C5063
13.K
3.3
100.n
C5092
BATT_SENSE 220.p
R5000
0.
R5029
FILT_B+ 100.K
R5020
150.K
R5030
33.K 10K
Q502
R5036
47K
47.K R5062
Q506
10.K
C5037
VR503 R5049
100.n
3.3 15.K
TP556
TEST_POINT
D511
R5069
DC_POWER_ON 10.K
D3_3V
C5119
10.u
R5035
47.K
C5104
ONOFF_SENSE 47K
10.u
Q504
DNP
47K S5010
SWITCH
Indirect
Audio
Volume
D3_3V
50.K
R5079
R5071
100. 2.2K
D500
C5035
100n
Place near uP
FILT_B+
1.K
Smart Fuse Circuit
R5074
24.K
VR501 R5039
R5048
5.1 100.K
IGNITION D513
C5110
R5082
R5083
1.n
51.K 270.K
C5038
100.n
R5085
1.M
Q500 R5089
DNP
1.M
DNP
POWER SUPPLY
9V
9.3V
U501 SOURCE
LM2941T
9.3V
4 5
VIN VOUT
R5081
C5015
C5074 C5095
2 1 C5096
ON_OFF 6.34K
ADJ 100n 120.p 220.p 220.p
1%
R5038
C5005
33.K
100.u
R5001
Spacer for T0-220
1.K
M6 1%
On/Off for ATE
1
TEST_POINT
TP555
D502
DNP 2
DEMOD
R5092
3
100.K
5V
C5113
220.p
R5095 DNP
200.K
DNP
C5114
R5096
1.u
100.K
DNP
Q505
DNP
R5037
10.K
U503
5V SOURCE
LP2951C
5V TO LVFRACN
5V RF Regulator
8 1
INPUT OUTPUT
7 5
FEEDBACK ERROR
2
3
SHUTDOWN SENSE DNP
6
5V_TAP
C5068 R5002
C5006 C5016
10.M
10.0u 100n 120.p
C5042 C5064
1u 120.p
C5040
100.n
DNP
SOURCE
3.3V RF Regulator
3V
U508
MC33269D
3 2
IN OUT
VOL_INDIRECT C5008 C5018 C5070
C5066
120.p
10.0u 100n
120.p
C5043
1u
3.3V Digital REGULATOR
U510
LP2986ILDX
4 5
INPUT OUTPUT
8 7
SHUTDOWN ERROR
R5073
6
2
SENSE FEEDBACK
1.K
3
TAP
C5041 C5065 C5017 C5069
120.p
2.2u 120.p
100n
C5111
1.n
DNP
D501
Q503
FILT_B+
DNP
R5103
24.K
VR502
3.9
DNP
UHF 25-40 W Band 2 PCB 8486577Z03 / Schematics
AUDIO
IF505
1
9V
C1087 C1034 C1122
C1123 C1124
39.p 39.p 39.p 39.p 39.p C1127
100.u
C1125
39.p
R5097
0.
DNP
C5115
C5117
6.8p
16.p DNP
DNP DNP
5V
R5093 R5099
220.K 100.K
U500
U500
DNP
LM2904
8 LM2904
C5118
R5094
1 6 8 DNP
100n
7
DNP
4 1.M
5
4 R5100
DNP
1.M
DNP
C5116
220.p
DNP
TO SHEET 1
R5098
0.
DNP
5V
For mid_band
5V_CH
C5039
100.n
DNP
3.3V to IFIC, ASFIC
3V
RESET
SOURCE
3.3V Digital
D3_3V
D3_3V
C5007
47u
VSTBY
C5120
47u
DNP