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

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

Circuitos de CC y de audio 1-25 W UHF2 (438-470 MHz) (hoja 1 de 2)

L120
1019447
SOURCE C1113
C1097 C1088
L500 FILT_B+ 39.p 39.p
120.p
1019447
U501
LM2941T
4
VIN VOUT
2
ON_OFF ADJ
R5038
C5086 VR500 C5067 C5060 C5083 C5085 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
M6
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
R5029
FILT_B+
150.K 100.K
Q502
R5030
Q506
33.K
R5062
10.K
R5049 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
Esquemas eléctricos de la tarjeta de circuito impreso 8488978U01 del radio UHF 1-25 W banda 2 (rev. P9)
1
IF502
COMP_B+
IF503
1
C1098 C1114
9V
120.p
39.p
9.3V POWER SUPPLY 9.3V
5
1
R5081
6.34K C5005 C5015 C5074 C5095 C5096 C1087
1% 100.u 100n 120.p 220.p 220.p 39.p
R5001
1.K
1%
DNP
DNP
R5092
100.K
DNP 2
DEMOD
3
5V
DNP
DNP C5113
220.p
R5095
200.K
DNP
DNP
R5096
C5114
100.K
1.u
U503
5V
LP2951C
SOURCE
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
DNP
C5006 C5016 C5068 C5040
10.0u
100n 120.p 100.n
3.3V RF REGULATOR
3V
SOURCE
U508
MC33269D
3 2
IN OUT
C5043 C5066
C5008 C5018 C5070
1u 120.p 10.0u
100n 120.p
3.3v Digital REGULATOR 3.3v digital
U510
LP2986ILDX
4 5
INPUT OUTPUT
8 7
SHUTDOWN ERROR
6 2
SENSE FEEDBACK
3 9
TAP NC
C5041 C5065
GND
C5017 C5069 C5007
120.p
2.2u 1
100n 120.p 47u
DNP
D501
FILT_B+
DNP
R5103 DNP
DNP
24.K
VR502
3.9
SOURCE
IF505
1
9V
C1034 C1122 C1123 C1124 C1125 C1127
39.p 39.p 39.p 39.p 39.p 100.u
R5097
C5117
C5115
0. 16.p
6.8p
DNP
R5099
R5093
100.K
220.K
DNP
5V
DNP
U500 DNP
U500
8 LM2904
LM2904
DNP
1 6 8
C5118
DNP
7
100n
R5094
4
5
R5100
1.M 4
DNP 1.M
C5116
220.p
DNP
R5098
0.
5V
9V
R5002
For mid_band
10.M
5V_CH
DNP
DNP
C5039
C5019 R5052
R5078
100.n R5077
100n 10.K
100.
300.
R5053
10.K
C5009 R5076
3.3V to IFIC, ASFIC
C5010
10.0u 510.
10.0u
3V
R5054
C5047
EXTERNAL_MIC_AUDIO_ACCESS_CONN
10.K
100n
R5070
2.2K
RESET
R5075
D3_3V SOURCE
510.
D3_3V
DNP
VS_MIC
C5102
100n
VS_AUDIO_SEL
VSTBY
C5120 MIC_AUDIO_CH
47u
C5045
1.u
C5071
120.p
VAG=4.5v
VAG
C5011
10.0u
3V
DNP
R5084
C5103
100.n 0.
DNP
R5047
USE NLAS4599
MAX4599EXT
0.
U515
4 NC
5
COM
6
NO IN 1