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

Esquemas eléctricos de la tarjeta de circuito impreso 8486577U01 del radio UHF 25-40 W banda 3
POST_LIMITER_FLAT_TX_AUDIO_RETURN_OPT_BRD
FLAT_TX_AUDIO_INPUT_ACCESS_CONN
DETECTOR_AUDIO_SEND_OPT_BRD
UNMUTED_RX_AUDIO_SEND_OPT_BRD
RX_AUDIO_RETURN_OPT_BRD
TX_AUDIO_SEND_OPT_BRD
TX_AUDIO_RETURN_OPT_BRD
IF507
1
PA_BIAS
PA_CURRENT
C1093
39.p
DNP
9V
R5077
R5078
300. 100.
C5009
C5010
10.0u
10.0u
EXTERNAL_MIC_AUDIO_ACCESS_CONN
R5075
510.
VS_MIC
VS_AUDIO_SEL
C5045
1.u
MIC_AUDIO_CH
C5071
120.p
C5056
DNP
4.7uF
R5024
DNP
100.K
DNP
C5101
1.n
C5055
R5023
4.7uF
100.K
3V 3V
R5025
100.K
DNP
R5063
R5044
R5064
8.2K
24.K
8.2K
DNP
C5054
100n
DNP
DNP
C5053
100n
R5043
24.K
R5040
30.K
C5052
100n
C5051
100n R5042
DNP
24.K
C5050
100n
3V
C5022
100n
1
PWR_SET
IF506 VOX
C1094
120.p
C1090 C1131
39.p
39.p
DNP
DNP
DNP C5023 C5028 C5013
C5019 R5052 100n 100n 1u
C5014
100n 10.K
2.2u
VAG = 4.5V
VAG
C5011
R5076 R5053
DC_POWER_ON
510. 10.K 10.0u
BW_SEL
C5047
R5054 CH_ACT
100n
10.K
SQ_DET
R5070
2.2K C5046
100n
ASFIC_CS
SPI_CLK
SPI_MOSI
3V
C5091
82.p
DNP
DNP
C5103 R5084
100.n 0.
R5026
33.K
R5047
0.
U515 U507
4 NC
LM2904
R5014
8 6
MAX4599EXT
0.
USE NLAS4599 5 7
C5102 DNP
5
COM
100n
4
6
IN
NO 1
C5090
82.p
9V
R5046
24.K
U506
LM2904
1
C5081 C5033
120.p 100n
R5067
6.2K
DNP
3V
C5057
4.7uF
R5080
10.
0662057A86
R5034
C5012
4.7u
FLAT_OR_DEEMPH_RX_AUD_SEL
1 36
VDDA TXRTN
35
2
DISC GCB3
34 3V 3V 5V
3
GNDA CLK168
4 33
DACU VDDD
32
5
DACR VDDCP
U504 31
6
DACG GNDD R5010
7 30C53 30
0.
VOX GNDDO
29 DNP
8
PLCAP F1200
DNP
28 3V
9
SQIN SYN R5011
10 27
UIO VDDSYN 0.
26
11 C5034
VDDDAC NC
R5088
3V 12 25 100n
SQCAP PLCAP2
0.
C5029
100n
U507
DNP LM2904
DNP
C5026
C5058
R5058
100n
100n
10.K
2
C5020
100n
3
C5059
22n
3V
R5060
10.K
R5061
10.K
C5036
C5024 C5025 100.n
100n
100n
3V
R5033
47.K
R5008
LSIO 0.
HSIO
AUDIO_PA_EN
F1200
uP_CLK
R5072
4.7K
R5027
270.K
C5077
120.p
C5089
82.p
3V
DNP
R5068
6.2K
R5056
R5022
10.K
100.K
U506
R5045 LM2904
8 6
33.K 7
8 2 5
4
3
C5032
4
100n
R5057
C5078 10.K
1.n
C5088
82.p
3V
R5009
0.
R5021
C5027 100.K
100n
C5044
U505
4.7uF
LM2904
U509 6 8
MC14053B 7
6 5
EN
36K 4
12 VAG
X0
14
R5032 R5065
X
47.K 13 11 6.2K
X1 A
2
Y0
15
Y
1 10
Y1 B
5
Z0
4
Z
3 9
Z1 C
C5087
120pF
FLAT_TX_AUDIO_MUTE
2113740F53
R5019 200K
0662057B05
R5055
C5048
U505
100n
10.K
2 8 LM2904
1
3V 3
4
C5075 VAG
1n
C5082
C5031
120.p
100n
C5076 B+
R5059 120.p
DNP
10.K
R5017
R5018
1.5
1.5
0609887C05
0609887C05
C5049
8
100n
DNP
1
U502 C5021
R5013
4
TDA1519C 100.n
0.
R5016
1.M
9 4
DNP INV OUT1
1
NINV
3
RR
8 6
OUT2
M_SS
FILT_SW_B+
C5072
120.p
R5041
24.K
C5002
47u
R5051
12.K
Q501

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

4-15
9V
C5030
C5079
100n 120.p
C5003 R5086
RX_AUDIO_OUTPUT_ACCESS_CONN
47u 560.
R5087
100.K
16.8MHz
MOD_OUT
HANDSET_RX_AUDIO_CH
R5066
1K
C5080
120.p
L501
1019447
SPKR+
SPKR-
L502
1019447
C5100
C5073
C5098 220.p
120.p
220.p
C5099
220.p
C5097
220.p