Uhf2 (438-470 Mhz) 25-40 W Dc And Audio Circuits (Sht 2 Of 2) - Motorola CM200 Service Manual

UHF 25-40 W Band 2 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 R5064
8.2K
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
DNP C1131
39.p
3V
DNP
C5014 C5023 C5028 C5013
C5019 R5052
10.K 2.2u 100n 100n 1u
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
U507
4
NC
R5014 LM2904
8 6
0.
5 7
5
COM
4
6
1
NO IN
C5102
C5077
100n
DNP
9V
R5046
24.K
U506
LM29048
C5033
100n 1
C5081
120.p
R5067
6.2K
DNP
3V
C5057
4.7uF
R5080
0662057A86
10.
R5032
C5012
4.7u
FLAT_OR_DEEMPH_RX_AUD_SEL
1
36
VDDA
TXRTN
2 35
DISC GCB3
3V 3V 5V
3 34
GNDA CLK168
R5010
4 33
DACU VDDD 0.
5 32
DACR VDDCP
6
31
DACG GNDD
R5011
7 U504 30
VOX GNDDO
30C53 0.
8 29
PLCAP F1200
3V
9 28
SQIN SYN DNP
10 27
UIO
VDDSYN
11 26
C5034
VDDDAC NC R5088
12 25
100n 0.
SQCAP PLCAP2
C5026
C5029
100n 100n U507
LM2904
DNP
DNP
R5058
2
C5020 C5059
100n 10.K
22n C5058 3
100n
3V
R5060
10.K
C5024 C5036
R5061
100n
C5025 100.n 10.K
100n
R5008
0.
R5033 3V
47.K
AUDIO_PA_EN
R5072
4.7K
R5027
270.K
120.p
C5089
C5090
82.p
3V
82.p
DNP
R5022
100.K
R5068
R5056
6.2K
10.K
U506
LM2904
R5045
8 6
33.K
7
2 5
4
3 C5032
4
100n
R5057
C5078 10.K
1.n
C5088
82.p
3V
R5009
R5021
0.
C5027
100.K
100n
C5044
U505
4.7uF
U509
6 8 LM2904
MC14053B
7
R5034
5
EN 6
36K
4
VAG
12
X0
X 14
47.K
13 11
X1 A
2
Y0
15
Y
1 10
Y1 B
5
Z0
4
Z
3 Z1 C 9
C5087
FLAT_TX_AUDIO_MUTE 120pF
2113740F53
R5019
200K
0662057B05
C5048
R5055
U505
100n
10.K
2 8 LM2904
1
3V 3
DNP
4
C5075
VAG
1n
C5076
B+
120.p
R5059
C5031
C5082
10.K DNP
100n
120.p
R5018
R5017
1.5
1.5
C5049 0609887C05 0609887C05
100n
8
DNP
1
C5021
U502
4 R5013
100.n
TDA1519C
0.
R5016
4
1.M 9
INV OUT1
DNP
1
NINV
3
RR
6
8
M_SS OUT2
FILT_SW_B+
R5041
24.K C5002
47u
R5051
12.K
10K
Q501
47K

UHF2 (438-470 MHz) 25-40 W DC and Audio Circuits (Sht 2 of 2)

4-15
9V
C5079
120.p
C5030
100n
C5003 R5086 RX_AUDIO_OUTPUT_ACCESS_CONN
47u
560.
R5065
R5087
6.2K
100.K
16.8MHz
MOD_OUT
HANDSET_RX_AUDIO_CH
R5066
1K
C5080
120.p
L501
1019447
SPKR+
SPKR-
C5073
L502
120.p
1019447
C5100
C5072
220.p
C5098
120.p
220.p
C5099
C5097 220.p
220.p