Motorola Commercial CM Series Service Information page 55

UHF 1-25W PCB 8486684Z01 (Rev.O) / 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
DNP
TX_AUDIO_SEND_OPT_BRD
C5051
R5042
100n
24.K
TX_AUDIO_RETURN_OPT_BRD
C5050
100n
PA_BIAS
PWR_SET
VOX
DNP 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
C5022
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
22n
2.2u 100n 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
R5072 4.7K
U507
R5014 270.K
LM2904 8 6 R5027
0.
7
5
4
C5077
120.p
DNP
C5090 82.p
9V
R5024 R5068
24.K
R5046
100.K 6.2K
R5045
33.K
U506
C5033
C5081
LM2904 8 2
120.p 1
100n
3
R5023
4
100.K
C5078
1.n
R5067
3V
6.2K
C5057
DNP
100n
MC14053B
R5080
10. R5034 36K 12
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
C5075
GNDDO 30
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
LM2904 8 6
10.K
7
5
4
C5032
3V
100n
R5057
10.K
C5027 C5088
R5009
82.p
100n
0.
U509
100.K
R5021
6
C5044
EN
U505
1u
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
B+
C5076
120.p
R5018
R5017
C5031 C5082
1.5
1.5
100n 120.p
0609887C05
0609887C05
C5049
100n
DNP
R5013 C5021
0. U502
100.n
TDA1519C
DNP
R5016
FILT_SW_B+
9 4
1.M
INV OUT1
1
NINV
3
RR
8 6
M_SS OUT2
R5041
24.K
C5072
120.p
R5051
12.K
C5002
47u
Q501
UHF1 (403-440MHz) DC and Audio Circuits (Sht 2 of 2)
4-15
9V
C5030 C5079
100n 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
C5073
120.p
C5098
220.p
C5099 C5100
C5097
220.p 220.p
220.p
73D02968C74-O
SHEET 7 OF 8