Circuitos De Cc Y De Audio 25-45 W Vhf2 (146-174 Mhz) (Hoja 1 De 2) - Motorola EM200 Serie Manual De Servicio

4-14
IF501
1
COMP_B+ IF503
C1113
220pF
B+
C5000
1000pF
BATT_SENSE
IF500
1
FILT_SW_B+
C1085 C1128 C5094
220pF 220pF
1000pF
EMERGENCY_ACCES_CONN
R5036
EMERGENCY_SENSE
47K
VR503
3.3V
DC_POWER_ON
D3_3V
R5035
47K
Q504
ONOFF_SENSE
Smart Fuse Circuit
IGNITION

Circuitos de CC y de audio 25-45 W VHF2 (146-174 MHz) (hoja 1 de 2)

L120
spacer for TO-22 0
C1097 C1088 C1098 C1114
35U02
M6
1000pF 1000pF 1000pF 220pF
SOURCE
FILT_B +
L500
35U02
R5038
C5061 C5084 C5086 VR500 C5067 C5060 C5083 C5085 C5001
24V
0.1uF 100pF .022uF 1000pF 0.1uF 100pF .022uF
10uF
TP500
FILT_SW_B+
TEST_POINT
1
U514
R5000 R5031
0 62K
VR504 R5028
C5062
R5050
100K
C5063
C5092
13K
0.1uF
3.3V
220p F 0.1uF
FILT_B +
R5029
100K
R5020
150K
R5030
33K
R5062 Q502
Q506
10K
C5037
R5049
15K
0.1uF
TP556
R5069
TEST_POINT
D511 10K
1 C5119
R5037
10K
10uF
Indirect Audio Volume
C5104
10uF
6 5 4
S5010
SWITCH
50.K
D3_3V
1 2 3
R5079
R5071
100
2.2K
VOL_INDIRECT
C5035
Place near uP
0.1uF
D500
FILT_B +
R5074
1K
R5039
100K
D513
VR501
R5082
R5083
5.1V
270K C5111
51K
1000pF
R5089
Q500 1MEG R5085 Q503
1MEG
DNP
DNP
Esquemas eléctricos del radio VHF2 25-45 W banda 2, tarjeta de circuito impreso 8486487Z04
POWER SUPPLY
SOURCE
9V
U501
LM2941T
4 5 9.3V 9.3V
VIN VOUT
2 1
ON_OFF ADJ C5005 C5074 C5095 C5096 C1087 C1034 C1122
C5015
R5081
GND 6.34K
100uF 0.1uF 1000pF 220pF 220pF 1000pF 220pF 220pF
1%
3
33K
R5001
1K
1%
TP555
1
TEST_POINT
On/Off for ATE
D502
DEMOD
R5095
200K
R5096
100K
Q505
5V RF Regulator
SOURCE
5V
U503
LP2951C
8
1
OUTPUT
INPUT
7 FEEDBACK 5
ERROR
3
2
SHUTDOWN
SENSE
6
5V_TA P
GND C5006 C5016
4
10uF 0.1uF
3.3V RF REGULATOR
U508
MC33269D
3 2
IN
OUT
GND
C5066 1
C5043
C5008
1uF
1000pF
10uF
3.3v Digital REGULATOR
U510
LP2986ILDX
4 INPUT 5
OUTPUT
8 SHUTDOWN
ERROR 7
6 SENSE 2
FEEDBACK
3
TAP
C5041 C5065 C5017
GND1 GND2
1000pF
2.2uF 0.1uF
1
9
FILT_B+
R5103
DNP
24K
VR502
DNP
POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BR
AUDIO
IF502
1
9V
FLAT_TX_AUDIO_INPUT_ACCESS_CONN
C1123 C1125
C1124 C1127
220pF
220pF 220pF
100uF
R5097
0
NU
C5115 6.8pF C5117 16pF
DNP DNP
R5093 R5099
5V
DNP
100K
10K
R5092 8
2
DNP
R5094
DNP
1 6 8
R5100
100K 7
3
1MEG 5
4
5V 1MEG
4
C5113 C5116
U500-1
LM2904 U500-2
220pF
220pF
LM2904
DNP DNP
R5098
C5114
0
1uF
5V TO LVFRACN
For mid_band
DNP
R5002 0
C5068
5V_C H
1000pF C5040 C5039
0.1uF 0.1uF
DNP
DNP
SOURCE
3V
3.3V to IFIC, ASFI
C5018 C5070
0.1uF 1000pF
RESET
SOURCE
3.3v digital
D3_3V
D3_3V
C5069 C5007
1000pF
47uF
D501
VSTBY
C512 0
DNP
47uF
DNP
C5118
0.1uF
DISC