Circuitos De Cc Y De Audio Vhf2 (146-174 Mhz) (Hoja 1 De 2) - Motorola EM200 Serie Manual De Servicio

4-14
COMP_B+
B+
C5000 C5061 C5084 C5086
100.n 100.p
1n 22.n
FILT_SW_B+
IF500
1
BATT_SENSE
R5000
0.
C5094
C1085 C1128 C5062
1n 220.p 220.p 100.n
FILT_B+
R5030
33.K
R5062
R5036
10.K
47.K
EMERGENCY_SENSE
R5049
VR503
15.K
3.3 TP556
TEST_POINT
EMERGENCY_ACCES_CONN
DC_POWER_ON
D3_3V
R5035
Q504
47.K
ONOFF_SENSE
DNP
C5104
10.u
Smart Fuse Circuit
1.K
VR501
5.1
IGNITION

Circuitos de CC y de audio VHF2 (146-174 MHz) (hoja 1 de 2)

IF501
IF503
1
L120 1019447
C1097 C1088
C1113
SOURCE
L500 220.p 1n 1n
U501
FILT_B+
57R01 LM2941T
4 5
VIN VOUT
2 1
ON_OFF ADJ
VR500
C5067 C5060 C5083 C5085 C5001
28.0 100.n 100.p 10.u
1n 22.n
R5038
spacer for TO-220 M6
TP500
33.K
TEST_POINT
On/Off for ATE
R5028
FILT_SW_B+
100.K
U514
TP555
1
TEST_POINT
R5031 D502
62.K
R5050
VR504
13.K
3.3
C5092 C5063
220.p
100.n
R5029
100.K
R5020
150.K
Q502
C5037
100.n
Q506
D511
R5069
Q505
10.K
C5042
1u
C5119
R5037
10.u 10.K
S5010 Indirect
SWITCH Audio
Volume
D3_3V
50.K
R5079 R5071
100.
2.2K
VOL_INDIRECT
Place near uP
C5035
D500 100n
FILT_B+
R5073
1.K
R5074
R5039
R5048
C5041
100.K
24.K
2.2u
D513
R5082
R5083
51.K
270.K
C5111
DNP
DNP
Q503 1.n
Q500
R5089 R5085
C5038 C5110
1.M
1.M
100.n 1.n
Esquema eléctrico de la tarjeta de circuito impreso 8488977U01 del radio VHF 1-25 W banda 2 (rev. P8)
C1098 C1114
1n 220.p
POWER SUPPLY
9.3V
R5081
6.34K
1%
C5005 C5015 C5074
C5095
100.u 100n 1n
220.p
R5001
1.K
DNP
1%
C5115
DNP 6.8p
R5093
220.K
DNP
2 8
DEMOD
R5092
3
100.K 4
5V
DNP
C5113
DNP
220.p
R5095
200.K
DNP DNP
R5096
C5114
100.K 1.u
5V RF Regulator 5V
U503
SOURCE
LP2951C
5V TO LVFRACN
8 1
INPUT OUTPUT
7 5
FEEDBACK ERROR
3 2
SHUTDOWN SENSE
6
5V_TAP
DNP
GND
C5064
4
C5039
1n DNP R5002
C5006 C5016 C5068
C5040
10.M 100.n
10.0u
100n 1n
100.n
DNP
SOURCE
3.3V RF REGULATOR
3V
U508
MC33269D
3.3V to IFIC, ASFIC
3 2
IN OUT
C5043 C5066
C5008 C5018 C5070
10.0u
1u 100n 1n
1n
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
GND
1
C5065
C5017 C5069
1n
100n 1n
DNP
D501
FILT_B+
DNP
R5103
DNP
24.K DNP
VR502
3.9 C5120
47u
9V
9.3V
SOURCE
IF502
1
9V
C1087 C1034 C1122 C1123 C1124 C1125 C1127
C5096
220.p 1n 220.p 220.p 220.p 220.p 220.p 100.u
DNP
R5097
C5117
0.
16.p
DNP
5V
R5099
100.K
DNP
DNP
U500
U500
DNP
LM2904
DNP LM2904
1 6 8
DNP
C5118
7
100n
R5094 5
4 R5100
1.M
DNP
1.M
C5116
220.p
DNP
R5098
0.
9V
5V
For mid_band
5V_CH R5078
R5077
100.
300.
C5010 C5009 R5076
10.0u 10.0u
510.
3V
EXTERNAL_MIC_AUDIO_ACCESS_CONN
R5054
10.K
RESET
D3_3V SOURCE
R5075
510.
D3_3V
VS_MIC
C5007
47u C5102
100n
VSTBY VS_AUDIO_SEL
MIC_AUDIO_CH
C5045
C5071
1.u
1n
C5019
100n
R5052
10.K
VAG=4.5v
R5053 C5011
10.K 10.0u
C5047
100n
R5070
2.2K
R5047
0.