Uhf3 (465-495 Mhz) 25-40 W Dc And Audio Circuits (Sht 2 Of 2) - Motorola CM200 Service Manual

UHF 25-40 W Band 3 PCB 8486577Z01 / Schematics
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_CURRENT
PA_BIAS
C1094
C1093
120.p
39.p
DNP
9V
R5078
R5077
100.
300.
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
DNP
R5024
100.K
4.7uF
C5056
DNP
1.n
C5101
DNP
C5055
R5023
4.7uF
100.K
R5025 3V 3V
100.K
R5063
R5044 8.2K R5064
24.K DNP 8.2K
DNP DNP
C5054
100n
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 C1090
39.p
VOX
C1131
DNP
39.p
3V
DNP
C5028
C5014 C5023 C5013 C5020 C5059
C5019 R5052
10.K 2.2u 100n 100n 1u 100n
100n
VAG=4.5V
VAG
R5076 C5011
R5053
DC_POWER_ON
510. 10.0u
10.K
BW_SEL
C5047
R5054
CH_ACT
100n
10.K
SQ_DET
LSIO
R5070
HSIO
C5046
2.2K
100n
ASFIC_CS
SPI_CLK
SPI_MOSI
3V
C5091
F1200
C5103
R5084 82.p
100.n
DNP
uP_CLK
DNP 0.
R5026
33.K
R5047 USE NLAS4599
0.
MAX4599EXT
U515
4 U507
NC
R5014
LM2904 8 6
0.
5
7
5
COM
4
6
1
NO
IN
C5102
C5077
100n
120.p
DNP
C5090
82.p
9V
R5046
24.K
U506
LM29048
C5033
100n 1
C5081
4
120.p
R5067
6.2K
DNP
3V
C5057
4.7uF
R5080
0662057A86
10.
R5034
36K
R5032 47.K
C5012
4.7u
FLAT_OR_DEEMPH_RX_AUD_SEL
1 36
VDDA TXRTN
2 35
DISC
GCB3
3 34 3V 3V 5V
GNDA CLK168
R5010
4 33
DACU VDDD 0.
5 32
DACR VDDCP
6 31 DNP
DACG
GNDD R5011
7 U504
30
VOX GNDDO C5075
30C53 0.
8 29
1n
PLCAP F1200
3V
9 28
SQIN SYN DNP
10 27
UIO VDDSYN
11
26 C5034
VDDDAC NC R5088
R5059
12 25
100n
SQCAP PLCAP2 0.
10.K
C5026
C5029
100n 100n U507
LM2904
DNP
DNP
R5058
2 8
10.K
22n C5058 3
4
100n
3V
R5060
10.K
C5024 C5036
R5061
100n
10.K
C5025 100.n
100n
R5008
R5033 3V 0.
47.K
AUDIO_PA_EN
R5072
4.7K
R5027
270.K
C5089
82.p
3V
DNP
R5022
100.K
R5068
R5056
6.2K
10.K
U506
LM2904
R5045
8 6
33.K
7
2 5
4
3 C5032
100n
R5057
C5078 10.K
9V
1.n
C5088
82.p
3V
R5009
R5021 C5030
0.
C5027 100.K 100n
100n
C5044
U505
4.7uF
U509 6 8
LM2904
MC14053B
7
5
EN 6
4
12 VAG
X0
X 14 R5065
13 11 6.2K
X1 A
2
Y0
15
Y
1 10
Y1 B
5
Z0
4
Z
3 Z1
C 9
C5087
120pF
FLAT_TX_AUDIO_MUTE
2113740F53
R5019
200K
0662057B05
C5048 R5055
U505
100n
10.K
2 8
LM2904
1
3V 3
4
VAG R5066
1K
C5076
B+
120.p
C5031
C5082
DNP
100n
120.p
R5018
R5017
1.5
1.5
C5049 0609887C05 0609887C05
100n
DNP
1
C5021
U502
R5013
100.n
TDA1519C
0.
R5016
1.M 4
9
INV OUT1
DNP
1
NINV
3
RR
6
8
M_SS OUT2
FILT_SW_B+ C5073
120.p
C5072
120.p
R5041
C5002
24.K
47u
C5097
220.p
R5051
12.K
10K
Q501
47K

UHF3 (465-495 MHz) 25-40 W DC and Audio Circuits (Sht 2 of 2)

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