Motorola Commercial CM Series Service Information page 54

4-14
B+
C5000
C5061 C5084
100.n 120.p
1n
IF504
1
FILT_SW_B+
R5000
0.
C1085 C1096 C1132 C1128
39.p 39.p 39.p
39.p
BATT_SENSE
EMERGENCY_ACCES_CONN
R5036
EMERGENCY_SENSE
47.K
VR503
3.3
Come from Pin GCB2 of ASFIC
DC_POWER_ON
D3_3V
R5035
Q504
ONOFF_SENSE
47.K
Smart Fuse Circuit
IGNITION
UHF1 (403-440MHz) DC and Audio Circuits (Sht 1 of 2)
L120
1019447
C1113
SOURCE
C1097 C1088
FILT_B+
L500 39.p 39.p
120.p
1019447
U501
LM2941T
4
VIN
2
ON_OFF
C5086 C5067 C5085 R5038
VR500 C5060 C5083 C5001
100.n 120.p 10.u 33.K
22.n 28.0 1n 22.n
TP500 Spacer for TO-220
FILT_SW_B+
TEST_POINT
C5094
220.p
U514
On /Off for ATE
TP555
1
TEST_POINT
R5031
62.K
R5028
100.K
R5050
13.K
C5062 VR504 D502
100.n C5063
C5092
3.3
220.p
100.n
R5020
FILT_B+ R5029
150.K 100.K
Q502
R5030
Q506
33.K
R5062
R5049 10.K
C5037
15.K
TP556 100.n
TEST_POINT
D511
Q505
R5069
10.K
C5119 R5037
10.u 10.K
Indirect
DNP
C5104 S5010
Audio
10.u SWITCH
Volume
D3_3V
50.K
R5071
2.2K
R5079
D500 100. VOL_INDIRECT
Place near uP
C5035
100n
FILT_B+
R5074
1.K
VR501 R5073
R5039 R5048
5.1
D513 1.K
100.K 24.K
R5082 R5083
51.K 270.K
Q500
Q503
DNP DNP
C5038 C5110
R5089 R5085
100.n 1.n
1.M 1.M
C5111
1.n
1
IF502
COMP_B+
IF503
1
C1098 C1114
9V
120.p
39.p
9.3V POWER SUPPLY 9.3V
5
VOUT
1
ADJ
R5081
6.34K C5005 C5015 C5074 C5095 C5096
1% 100.u 100n 120.p 220.p 220.p
R5001
1.K
M6
1%
R5092
100.K
DNP
DEMOD
5V
DNP
DNP C5113
220.p
R5095
200.K
DNP
DNP
R5096
C5114
100.K
1.u
U503
5V
LP2951C
5V RF Regulator
5V TO LVFRACN
8 1
INPUT OUTPUT
7
5
FEEDBACK ERROR
3
2
SHUTDOWN SENSE
6
5V_TAP
GND
C5042 C5064
4
1u 120.p
C5016
C5006 C5068
10.0u
100n 120.p
3.3V RF REGULATOR
3V
SOURCE
U508
MC33269D
3 2
IN OUT
C5043 C5066
C5018
C5008
1u 120.p
10.0u 100n
3.3v Digital REGULATOR
U510
LP2986ILDX
4 5
INPUT OUTPUT
8 7
SHUTDOWN ERROR
6 2
SENSE FEEDBACK
3 9
TAP NC
C5041 C5065
GND
C5017 C5069
120.p
2.2u
1
100n 120.p
DNP
D501
FILT_B+
DNP
R5103
DNP
24.K
VR502
3.9
UHF 1-25W PCB 8486684Z01 (Rev.O) / Schematics
SOURCE
IF505
1
9V
C1087 C1034 C1122 C1123 C1124 C1125 C1127
39.p 39.p 39.p 39.p 39.p 39.p 100.u
R5097
C5117
C5115
0. 16.p
6.8p
DNP DNP
R5099
R5093
100.K
220.K
DNP DNP
5V
DNP
U500
U500
2 8 LM2904
LM2904
DNP
1 6 8
DNP
3 7
R5094
4
5
R5100
1.M 4
DNP 1.M
C5116
220.p
DNP
R5098
0.
SOURCE
5V
9V
R5002
For mid_band
10.M
5V_CH
DNP
DNP DNP
C5039
C5040
C5019
R5078
100.n
100.n R5077
100n
100.
300.
C5009 R5076
3.3V to IFIC, ASFIC
C5010
10.0u 510.
10.0u
3V
R5054
EXTERNAL_MIC_AUDIO_ACCESS_CONN
10K
C5070
120.p
RESET
3.3v digital
R5075
D3_3V SOURCE
510
D3_3V
C5102
DNP
VS_MIC
C5007
47u
VS_AUDIO_SEL
VSTBY
DNP
C5120 MIC_AUDIO_CH
47u
C5045
1.u
C5071
120.p
DNP
C5118
100n
VAG=4.5v
R5052
VAG
10.K
R5053 C5011
10.K 10.0u
3V
C5047
100n
R5084
C5103
R5070
2.2K
R5047
4 NC
U515
5
COM
6
NO IN 1