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

Esquemas eléctricos de la tarjeta de circuito impreso 8488978U01 del radio UHF 1-25 W banda 2 (rev. P9)
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
DNP
TX_AUDIO_SEND_OPT_BRD
C5051
R5042
100n
24.K
TX_AUDIO_RETURN_OPT_BRD
PA_BIAS
PWR_SET
VOX
DNP
C5056
DNP
1.u
C5101
1.n
3V 3V C5055
R5025
1.u
100.K
DNP
R5044 R5063 R5064
8.2K
24.K 8.2K
C5054
DNP
100n
DNP
DNP
C5053
100n
R5040
30.K
R5043
C5052
24.K
100n
C5050
C5022
100n 3V
100n
1
VDDA
2
DISC
3
GNDA
4
DACU
5
DACR
6
DACG
U504
7
VOX
8 30C53
PLCAP
9
SQIN
10
UIO
11
3V
VDDDAC
12
SQCAP
DNP
C5028 C5013
C5020
C5014 C5023 C5059
2.2u 100n 22n
100n 1u 100n
DC_POWER_ON
BW_SEL
CH_ACT
SQ_DET
C5046 LSIO
100n
HSIO
ASFIC_CS
SPI_CLK
C5091
82.p
SPI_MOSI
F1200
R5026
uP_CLK
33.K
4.7K
R5072
U507
R5014
270.K
8 6
LM2904 R5027
0.
7
5
4
C5077
120.p
DNP
C5090 82.p
9V
R5024 R5068
24.K
R5046
100.K 6.2K
DNP
R5045
33.K
U506
C5033
C5081 8 2
LM2904
120.p
100n 1
3
R5023
4
100.K
C5078
1.n
R5067
3V
C5057 6.2K
DNP
100n
U509
MC14053B
R5080
12
10. R5034 36K
47.K 13
R5032
2
C5012
1
4.7u
5
3
FLAT_OR_DEEMPH_RX_AUD_SEL
36
TXRTN
35
3V 3V 5V
GCB3
CLK168 34
VDDD 33
VDDCP 32
GNDD 31
R5010
GNDDO 30 C5075
0.
1n
F1200 29
3V DNP
SYN 28
R5011 DNP
VDDSYN 27
0.
NC 26
R5088 R5059
PLCAP2 25
C5034 0. 10.K
DNP
100n
DNP
U507
LM2904
C5026 C5029
DNP
100n 100n
2 8
1
C5058 R5058
3
100n 10.K 4
3V
R5060
10.K
C5036 R5061
C5024 C5025
100n 100n 100.n 10.K
3V
R5033
47.K
R5008
0.
AUDIO_PA_EN
C5089
3V
82.p
R5022 100.K
U506
R5056
8 6
LM2904
10.K
7
5
4
C5032
3V
100n
R5057
10.K
C5027
R5009 C5088
82.p
100n
0. C5030
100n
R5021 100.K
6
C5044
EN
1u U505
X0
14 6 8 LM2904
X
11 7
X1 A
5
VAG
Y0
4
15
Y
10 R5065
Y1 B
6.2K
Z0
4
Z
9
Z1 C
C5087
120P
FLAT_TX_AUDIO_MUTE
R5019
200K
C5048
R5055
100n U505
10.K
2 8
LM2904
1
3
4
VAG
9V
C5076
120.p
C5031 C5082
100n 120.p B+
C5049
100n
DNP
R5013 C5021
U502
0. 100.n
TDA1519C
DNP
R5016
FILT_SW_B+
1.M 9 4
INV OUT1
1
NINV
3
RR
8 6
M_SS OUT2
R5041
24.K
C5072 C5073
120.p 120.p
R5051
12.K
C5002
47u
C5097
220.p
Q501

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

4-15
9V
C5079
120.p
RX_AUDIO_OUTPUT_ACCESS_CONN
R5086
C5003
560.
47u
R5087
100.K
16.8MHz
MOD_OUT
HANDSET_RX_AUDIO_CH
R5066
1K
C5080
120.p
L501
1019447
SPKR+
SPKR-
L502
1019447
C5098
220.p
C5099 C5100
220.p 220.p
73D02968C74-O
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