Circuitos De Cc Y De Audio 25-40 W Uhf2 (438-470 Mhz) (Hoja 1 De 2) - Motorola EM200 Serie Manual De Servicio

4-14
B+
IF504
FILT_SW_B+ 1
BATT_SENSE
EMERGENCY_ACCES_CONN
EMERGENCY_SENSE
DC_POWER_ON
Come from Pin GCB2 of ASFIC
ONOFF_SENSE
Smart Fuse Circuit
IGNITION

Circuitos de CC y de audio 25-40 W UHF2 (438-470 MHz) (hoja 1 de 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
C5000 C5061 C5084 C5086
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
On/Off for ATE
U514
TEST_POINT
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
33.K 10K
Q502
R5036
47K
47.K R5062
Q506
10.K
C5037
VR503 R5049
3.3 15.K 100.n
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
VR501 R5039 24.K
R5048
5.1 100.K
D513
C5110
R5082
R5083
1.n
51.K 270.K
C5038
100.n
R5085
1.M
R5089
Q500
DNP
1.M
DNP
Esquemas eléctricos de la tarjeta de circuito impreso 8486577U01 del radio UHF 25-40 W banda 2
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%
1
TP555
D502
DNP
DEMOD
R5092
100.K
5V
C5113
220.p
R5095 DNP
200.K
DNP
C5114
R5096
1.u
100.K
Q505 DNP
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 R5002
C5016 C5068
C5006
100n 120.p 10.M
10.0u
C5042 C5064
1u
120.p
C5040
100.n
DNP
SOURCE
3.3V RF Regulator
3V
U508
MC33269D
3 2
IN OUT
C5018 C5070
VOL_INDIRECT C5008
C5066
120.p
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 C5069
2.2u 120.p
100n 120.p
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
LM2904
2 8 C5118
R5094
1 6 8 DNP 100n
3 7
DNP
4 1.M 5
4 R5100
DNP
1.M
DNP
C5116
220.p
DNP
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
TO SHEET 1