Motorola CM160 Service Information page 54

4-14
B+
IF504
1
FILT_SW_B+
BATT_SENSE
EMERGENCY_ACCES_CONN
EMERGENCY_SENSE
DC_POWER_ON
Come from Pin GCB2 of ASFIC
ONOFF_SENSE
Smart Fuse Circuit
IGNITION
UHF1 (403-440MHz) DC and Audio Circuits (Sht 1 of 2)
L120
1
57R01
IF502
COMP_B+
IF503
1
C1114
C1113 C1097 C1088 C1098
SOURCE
39.p 39.p
120.p 39.p 120.p
FILT_B+
L500
1019447
VR500
28.0
C5000 C5061 C5084 C5086
1n 100.n 120.p 22.n
10.u
C5067 C5060 C5083 C5085
C5001
C5004
100.n 22.n
1n 120.p
DNP 10.u
C5094
TP500
220.p
FILT_SW_B+
TEST_POINT
U514
R5031
C1128
39.p
C5062
62.K
100.n R5028
C1085 C1096 C1132
100.K
39.p 39.p 39.p
R5050
VR504
13.K C5063
3.3
100.n
C5092
220.p
R5000
0.
R5029
FILT_B+ 100.K
R5020
150.K
R5030
10K
33.K
Q502
R5036
47K
47.K R5062
Q506
10.K
C5037
VR503 R5049
100.n
3.3 15.K
TP556
TEST_POINT
D511
R5069
10.K
D3_3V
C5119
10.u
R5035
47.K
C5104
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
R5074
24.K
VR501 R5039
100.K R5048
5.1 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
2 1 C5095 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
DEMOD
R5092
100.K
5V
C5113
220.p
R5095
DNP
200.K
DNP
R5096
100.K
Q505
DNP
R5037
10.K
U503
5V
LP2951C
5V TO LVFRACN
5V RF Regulator
8 1
INPUT OUTPUT
7 5
FEEDBACK ERROR
3 2
SHUTDOWN SENSE
6
5V_TAP
C5068
C5006 C5016
10.0u 100n 120.p
C5042 C5064
1u 120.p
SOURCE
3.3V RF Regulator
U508 3V
MC33269D
3 2
IN OUT
VOL_INDIRECT C5008 C5018
C5066
10.0u 100n
120.p
C5043
1u
3.3V Digital REGULATOR
U510
LP2986ILDX
5
4
INPUT OUTPUT
8 7
SHUTDOWN ERROR
R5073
6
2
SENSE FEEDBACK
1.K
3
TAP
C5041 C5065 C5017
2.2u 120.p
100n
C5111
1.n
DNP
D501
Q503
FILT_B+
DNP
R5103
24.K
VR502
3.9
DNP
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
DNP U500
LM2904
2 8 LM2904 C5118
R5094
1 6 8 DNP
100n
3 7
DNP
4 1.M
5
R5100
DNP 4
1.M
DNP
C5116
220.p
DNP
C5114
R5098
1.u
0.
DNP
DNP
SOURCE
5V
DNP
R5002
For mid_band
10.M
5V_CH
C5040 C5039
100.n 100.n
DNP DNP
3.3V to IFIC, ASFIC
3V
C5070
120.p
RESET
SOURCE
3.3V Digital
D3_3V
D3_3V
C5007
47u
C5069
120.p
VSTBY
C5120
47u
DNP
UHF1 25-40W PCB 8486577Z02 / Schematics
TO SHEET 2