Motorola CDM1250 Service & Installation Manual - Page 27

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Motorola CDM1250 Service & Installation Manual
5VA
4403
+10V
HS_SNS
4401
DGND
C2
HSTIP1
.1
HSTIP2
C3
.1
AGND
AGND
5VA
G3_ONHI
3403
3
5VA
+
4
1
U1:A
C7
R18
2
LMIC1
-
22K
.1
C6
LMIC2
22pF
R17
220K
5VA
AGND
DM_MICLO
G4_ONHI
C8
DMICHI
.1
5VA
AGND
ACC MIC AUD
C10
ACMICH
.1
AC_MICLO
G7_ONHI
13
CTRL
IC/MONITOR LEVEL
AGND
1
2
IO
IO
U4:A
4066
AGND
G8_ONHI
SHEET 2
G2_ONHI
R9
5
5VA
+
13
22K
7
U1:B
JU1
CTRL
R11
R10
1
2
6
IO
IO
-
3403
2.2K
1K
U3:A
SDR DOT
4066
R13
68K
R14
5
22K
JU2
CTRL
C5
R12
3
1
IO
IO
2.2K
U3:B
.1
SDR DOT
4066
3403
C13
C4
22pF
.1
AGND
R38
10KP
R40
10KP
R22
+
6
68K
JU3
CTRL
R19
8
9
IO
IO
6.8K
U3:C
SDR DOT
4066
C9
+
G6_ONHI
.1
AGND
ICLVLCONT
12
5VA
+
14
U1:D
POT1
R120
13
_
3403
100KP
10K
R121
EXTSPKR1
150K
5VA
10VRMS Reference
EXTSPKR2
600 mVRMS Reference
Filtered Audio
R44
CONRXAUD
CNSTNT RXAUD
68K
R45
G1_ONHI
15KP
5
CTRL
4
3
R32
3403
IO
IO
-
9
10KP
U4:B
U2:C
4066
8
5VA
+
10
MIC SUM
G5_ONHI
3
5VA
+
6
U2:A
CTRL
R43
8
9
2
-
IO
IO
10KP
U4:C
10
ICLVLCONT
4066
9
R39
5VA
10KP
5
+
7
U2:B
6
-
3403
R41
10KP
3403
10
5VA
+
U1:C
R34
9
-
12
100KP
CTRL
R26
R35
11
10
IO
IO
100KP
390K
U3:D
JU4
R23
4066
56.2KP
SDR DOT
B+
AGND
RD RX AUD
R48
R49
1uF
R53
1KP
1KP
100
C20
C19
R50
3403
_
13
SPMUTE
100KP
.01
U2:D
14
+
12
C47
R119
R51
5VA
100KP
1KP
.01
12
B+
CTRL
1uF
R58
11
10
IO
IO
C29
6.8K
U4:D
C25
B-
4066
220, 25V
POT2
14
6 IN-
VCC
C28
8
ACC RX LEVEL
10K
U5
OUT
2 IN+
GND
220, 25V
3
BP
1
1 W into 8 Ohms = 2.8VRMS
G = 34 dB
AGND
+
AGND
C27
.1
B-
ACCAUDGND
HEADSET AUDIO LEVEL
R63
100KP
POT3
R64
3403
-
2
100KP
10K
+
U7:A
1
8
U7:C
+
3
R65
-
3403
100KP
5VA
R66
100KP
-
6
U7:B
7
+
3403
5
TX AUD
C16
C17
R31
8
TXAUD
80 mVRMS Reference
1.5K
10uF
10uF
C24
.1
C23
R56
R55
1
1
470, 16V
C22
R57
R54
1
1
33, LO ESR
B-
2
L1
3
6
1
2
LSPKR1
U6
5
LSPKR2
3
4
8
C31
1 W into 16 Ohms =4 VRMS
R67
7
TDA7056A
4
35 dB typical
1
.47, Film
AGND
B-

CDM Control Station Interface Module (CSIM), Audio Section

October, 2004
6880309N15-A
ACC_RX
HSSLV1
HSSLV2
1