Circuitos De Cc Y De Audio 25-40 W Uhf3 (465-495 Mhz) (Hoja 1 De 2) - Motorola EM200 Serie Manual De Servicio

4-14
B+
IF504
1
FILT_SW_B+
EMERGENCY_ACCES_CONN
EMERGENCY_SENSE
IGNITION

Circuitos de CC y de audio 25-40 W UHF3 (465-495 MHz) (hoja 1 de 2)

L120
1
57R01
IF502
COMP_B+
IF503
1
C1113 C1097 C1088 C1098 C1114
SOURCE
120.p 39.p 39.p 120.p 39.p
FILT_B+
L500
1019447
VR500
28.0
C5085 C5001
C5083
120.p 22.n 10.u
10.u
C5061 C5084 C5060
C5000 C5086 C5067
C5004
100.n 120.p 22.n 1n 100.n
1n DNP
C5094
TP500
220.p
TEST_POINT FILT_SW_B+
On/Off for ATE
U514
C1128
39.p
R5031
VR504
R5028
C1085 C1132 62.K
C1096 3.3
100.K
39.p 39.p 39.p
C5062
100.n
R5050
13.K
C5092
C5063
220.p
100.n
BATT_SENSE
R5000
0.
R5029
FILT_B+ 100.K
R5020
150.K
R5030
10K
33.K
Q502
R5036 47K
R5062
47.K 10.K
Q506
VR503
C5037
3.3 R5049
15.K 100.n
TP556
TEST_POINT
D511
R5069
DC_POWER_ON
10.K
Come from Pin GCB2 of ASFIC
C5119
D3_3V 10.u
R5035
47.K
ONOFF_SENSE
47K
Q504 C5104
10.u
S5010
47K
SWITCH
DNP
Indirect
Audio
Volume
D3_3V
50.K
R5079 R5071
100. 2.2K
D500 C5035
100n
Plave near uP
FILT_B+
R5074
Smart Fuse Circuit
1.K
R5039
VR501 R5048
5.1 100.K 24.K
D513
R5082
51.K
R5083
270.K
Q500
C5038
C5110
100.n 1.n
R5085
R5089
1.M 1.M
DNP DNP
Esquemas eléctricos de la tarjeta de circuito impreso 8486577U01 del radio UHF 25-40 W banda 3
POWER SUPPLY
9V
9.3V
U501
SOURCE
LM2941T
9.3V
4 5
VIN VOUT
2 1
ON_OFF ADJ R5081
6.34K
R5038 1%
C5015 C5074 C5095 C5096
C5005
33.K 120.p
100n 220.p 220.p
100.u
R5001
Spacer for 10 220
1.K
1%
M6
1
TEST_POINT
TP555
D502
DNP
R5092
100.K
DEMOD
5V
C5113
220.p
DNP
R5095
200.K
DNP
C5114
R5096 1.u
100.K
DNP
Q505
DNP
R5037
10.K
5V
U503
LP2951C
8 INPUT 1
OUTPUT
7 FEEDBACK 5
ERROR
3 2
SENSE
SHUTDOWN 6
C5042 C5064
1u 120.p 5V_TAP C5006 C5016 R5002
C5068
10.0u 100n 120.p
C5040
100.n
DNP
3.3V RF REGULATOR
SOURCE
3V
U508
MC33269D
3 2
IN OUT
C5043 C5066
VOL_INDIRECT
1u 120.p
C5008 C5018 C5070
10.0u 100n 120.p
3.3V Digital REGULATOR
U510
LP2986ILDX
4 5
INPUT OUTPUT
8 7
SHUTDOWN ERROR
R5073 6 SENSE 2
FEEDBACK
1.K
3 C5017 C5069
TAP
100n 120.p
C5041 C5065
120.p
2.2u
Q503 C5111
1.n
DNP
D501
FILT_B+
R5103
24.K
VR502
DNP
3.9
DNP
AUDIO
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
0.
C5115
C5117
6.8p
16.p
DNP
DNP
DNP
DNP
5V
R5093 R5099
100.K
220.K
U500 U500
DNP
DNP LM2904
LM2904
DNP
2 8 R5094 DNP DNP
C5118
R5100
1 1.M 6 8 100n
1.M
3 7
4
5
4
C5116
220.p
DNP
DNP
R5098
0.
5V
DNP
For mid-band
10.M
5V_CH
C5039
100.n
DNP
3.3V to IFIC, ASFIC
3V
RESET
3.3V Digital
D3_3V
SOURCE
D3_3V
C5007
47u
VSTBY
C5120
47u
DNP