Icom IC-A23 Schematic Diagrams

2000 05
RF UNIT
IC-A23
+
CHG
+5V
CHASSIS UNIT
DCIN 12V
EXT SP/MIC
(4pin/d=3.5)
BP-200or
BP-***
(9V~9.6V)
T+5
A
B
C
D
E F G I J K
L
M N
A B C D E F G H I J K L M N
H
1 2 3 4 5 6 7 8 9
10
1
.
ICOM
Icom Inc
REVISIONS
DIAGRAM
1
2
3
4
5
6 ..
. .
..
. .
..
. . 7
8
9
10
11
12 . .
..
. .
..
. .
.. MODEL
DWN.NO.
DATE
APPD. CHKD.
DWN.BY:
SCHEMATIC
29.
-
2 3 4 5 6 7 8 9
10
2
Parts that there is "H"sign ahead of the reference number are unmounting
R5
HV
VCC
R5C
WXC
EMBI
CHGC
SBATT
AFC
SDATA
DETO
OE JACKDET
VOLCK
RFSTB
TXC SCK
VOLDATA STDET
VCC
UNLK PTT
PCK
EXTMIC
PSTB LIGHT
PDATA DASTB
EXTSP
SPE/MICE
+5V
VREC
VORDET BEEP
RFDETV MOD
VORON
RSSI
EXTMIC
DETMUTE ANLC
HV
SBATT
HV
EXTPTT EXTPTT
FI1
IC6
NC
1
VCC
2
NC
3
VIN
4
RIPPLE
5
NF
6
PHASE
7
PREGND
8
PWGND
9
POUT
10
D6
L28
Q1 3 2 15
4
D5
IC2
1 2 3 4 5
6 7 8
D21
Q24
S1
1
G1
2
S2
3
G2
4
D2
5
D2
6
D1
7
D1
8
D22
D23
D24
D25
IC3
FIN1
1
GND
2
CLK
3
DATA
4
STB
5
BS1
6
BS2
7
FIN2
8
CP2
9
GND
10
LD
11
BO
12
XOUT
13
XIN
14
VCC
15
CP1
16
D14
C195
+
IC510
1
2
3
45
6
7
8
C595
C340
+
J1
J3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20 21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
J2
D9
SP1
+
-
P1
1
2
IC5
STR
1
D
2
CLK
3
Q1
4
Q2
5
Q3
6
Q4
7
VSS
8
QS
9
QS
10
Q8
11
Q7
12
Q6
13
Q5
14
OE
15
VDD
16
C8
C6
C55
R2
C9
L4
R3
R4
R6
C17
C18
R5
L5
R8 R7
C13
C12
C7
C3
R9
C16
D3
D2
R11
C24
R12
C23
L6
C22
C27
C30
C25 R15
W12
C31
R21
R22
R20
C32
R17
C34
Q4
R24
Q5
R23
C37
+
R25
R26
C38
C39
R28
C29
D4
R27
L13
L14
C43
C41
Q6
C44
R34
R39
R36
R38
C47
R35
C46
C45
R37
C50
+
Q7
Q8
C52 C51
R40
C49
+
C48
D7
R101
R102
R100
D18 R99
R95 R93
C107
R92
C108
C114
R97
R94
R89
R90
R88
R87
C104
C106
R85
R84
Q15
R82
C100
C102
+
R79
R80
Q14
R77
R76
FI2
12
3 4
C99
+
R75
L42
C179
R138
C178
D26
C180
IC4
DO
1
LD
2
CLK
3
DI
4
AO1
5
AO2
6
NC
7
GND
8
VSS
9
NC
10
AO3
11
AO4
12
AO5
13
AO6
14
VDD
15
VCC
16
C281
R157
C115
+
C117
C118
R155
R154
C101
R86
C103
R83
R81
C98
C97
X1
C96
C95
R73
C94
C93
R72
R550
R551 R553
C165
R131
Q33
C174
C173
+
R130 C172
C167
L41
L40
C164
R68
C88
R71
R69
C90
Q13
C92
R156
C61
C84
C85
L29
L31
L33
L34
C143
C141
C144 C146
C565
Q25
R108
R110
C140
R109
R139
C181
C182
C183
+
R140
C196
Q36
3
2
1 5
4
C184
+
R146 C185
+
R148 R147
C186
R145
Q35
C10
L3 L2 L1
C4
C5
L16
C56
L15
D8
C53
C54
C64
+
L18
R49
R44
C62
D13
C60
R43
R45
C190
L21
R55
C66
C110
R56
R57
L22
C73
C70
R52
C77
D15
R60
C78
D16
R48
Q10
R46
Q11
C68
C67
R53
C191
C192
C72
R54
C76
R58
C193
R59
R61
Q12
C83 C82
R66
L24
C80
R63
R65
D17
R62
R64
Q32
R126
R134
CP1
C168
+
C166
C163
C162
R129
R128
Q31
C160
C158
R125
C159
L39
R124
R123
Q30
C156
C155
R118
R116
C151
Q28
R121
R119
R120
C153
Q29
C154
C152
R115
R114
D19
C119
L25
R47
D1
C28
R10
R78
C157
C149
R112
C171
Q27
L38
R117
L37
R113
C150
C148
R111
C130
+
R554
R555
C594
R556
C596
R557
C597 C537
C187
R150
R149
C188
+
R141
C124
C120
C121
+
Q22
R105
R104
R103
C123 C122
D20
HC194
C129
C128
R106
C127 C126
C125
L26
MP1
1
2
3
C116
HC123
HC122
HC103
HC100
HC105
HC108 HC109
HC107
HC114
HC113 HC111
HC112
HC101
R549
HC120
HC117
HC115
HC116
HC118
HC119
HC121
HC125
HC124
C15
C14
C11
C20
C19
C21
L7
R13
L8
R16
R14
C26
+
L9
L10
R18
L11
C35
C33
R19
L12
C36
C40
R29
R30
R31
R33
C42
R32
R98
Q18
C111
Q16
C109
R91
Q17
C112
R96
C113
+
R74
C81
C74
L23
C79
C75
C71
C69
C65
R51
R127
C161
C58
S1
S2
C539
R300
R301
C538
C303 C301
L301 L300
C304 C302
C300
J4
1
2
HC110
HC102
MP2
HC126
HC106
HC127
HR50
C197
L36
W16
HR132
R135
C169
+
HR122
X2
R137
C199
R133
C175
C198
R159
C91
IC1
OSCIN
1
OSCOUT
2
MIXOUT
3
VCC
4
IFIN
5
DEC
6
FILOUT
7
FILIN
8
AFOUT
9
QUAD
10
IFOUT
11
RSSI
12
N-DET
13
N-REC
14
GND
15
MIXIN
16
HR42
C142 C145
L35
L32
D27
HR142
HR143
W15
HC104
C541
+
IC505
VIN1
1
VOUT1
2
GND
3
DATA
4
CLK
5
VCC
6
VOUT2
7
VIN2
8
C540
+
R160
R161
C202
HR152
HR151
D100
HC86
R70 C89
L43
C204
C205
C203
L44
C206
C567
C572
HC205
W14
C201
R107
R162
C87
R158
C170
C200
R153
R163
C177
EP1
W17
J1
ANT CONNECTOR
1
2
C402
IC14
1
3
2
4
5
IC13
+
-
1
3
4
5
Q19
Q21
Q26
Q23
Q34
Q2
Q3
Q20

Icom IC-A23 Specifications

General

Brand	Icom
Model	IC-A23
Category	Transceiver
Language	English