Icom IC-A23 Schematic Diagrams

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
2 3 4 5 6 7 8 9
10
IC-A23
..2000 05
ICOM
Icom Inc
DIAGRAM
1
2
3
4
5
6 ..
. .
..
. .
..
. . 7
8
9
10
11
12 . .
..
. .
..
. .
..
MODEL
DWN.NO.
DATEAPPD.
CHKD.
DWN.BY:
SCHEMATIC
29
LOGIC
REVISIONS
INI
Parts that there is "H"sign ahead of the reference number are unmounting
CHASSIS
OE JACKDET
BDET VOLCK
CHGC RFSTB
TXC SCK
SDATA VOLDATA
VCC
UNLK PTT
PCK EXTPTT
PSTB LIGHT
PDATA DASTB
EXTMIC
+5V
HV VREC
VORDET BEEP
MOD
VORON
SEG12 SEG38
SEG11 SEG39
SEG10 UNLK
SEG9 EDATA
SEG8 DASTB
SEG7 VOLCK
SEG6 VOLDATA
SEG5 SCK
SEG4 SDATA +5V
SEG3 RFSTB
SEG2 MASTB
SEG1 OE
SEG0
COM3
COM2 RESET
COM1 DCC
COM0 KR0
KR1
KR2
KR3
KR4
LIGHTC
BUSYLED RECC
PLAYC
VORON
SCK
SDATA
MASTB
BDET
OE
+5V
KR0
KR1
KR2
KR3
KR4
KS3
INI
KS2
KS1
KS0
DICK DIUD
SEG29 SEG28 SEG27 SEG26 SEG31 SEG25 SEG24 SEG23 SEG22 SEG39 SEG38SEG13 SEG37SEG14 SEG36SEG15 SEG21SEG16 SEG20SEG17 SEG19SEG18SBATT SEG18SEG19PDATA SEG30SEG20PCK SEG17SEG21PSTB SEG16SEG22BEEP SEG15SEG23VORS SEG14SEG24DICK SEG13SEG25KS3 SEG12SEG26KS2 SEG11SEG27KS1 SEG10SEG28KS0
SEG9SEG29LIGHT SEG8SEG30
PTT
SEG7SEG31CLOUT SEG6
CHGC
CLIN
SEG1ECKDIUD SEG5PCONVORC SEG4POWER SEG0SEG36
BPCPI
SEG3SEG37JACKDET SEG2 COM3 COM2 COM1 COM0
CHGC UNLK
+5V
CLOUT
ALCC
CLINMMUTE
THERMC
VORC
VORS
RSSI
RFDET
THRMC
RFDET
VORD
VORD
RSSI
VIN
VIN
MC1
IC11
1
2
3
4 5
6
7
8
IC12
1
2
3
4
5
6
7 8
9
10
11
12
13
14
IC13
1
2
3
4 5
6
7
8
IC14
1
2
3
4 5
6
7
8
D16
R31
R44
R60
R66
R79
R84
R86
R89
R90
C47
C102
C105
+
C119
D2
C27
D10
R25
C19
R32
Q10
C50
C91
R81
C108
C104
+
C107
R78
C111
+
C113
+
C121
C118
C117
+
HC57
HC32
+
HC46
D11
R36
D7
D8
R18
R17
HC21
C22
Q3
R24
R21
C20
C31
Q7
3 2 1 5
4
C34
+
C33
C29
C28
+
R22
R20
HC30
C24
R19
C23
R6
C7
C8
C43
R27
R26
R28
DS4
C90
+
R48
C127
+
R47
C92
D15
R43
R42
R58
R59
C93
R39
C86
C123
R96
C120
+
R91
R71
R70
R69
C125
+
C116
R72
R65
R64
C115
+
C114
+
R63
R62
R61
C101
R87
R85
C112
+
R83
C103
+
R74
R73
R75R76
R88
R82
R80
C109
C106
R77
C110
+
DS3
R34
C52
C51
R33
C49
+
C6
C1
C2
HC3
C126
C9
R15
Q1
R37
J1
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
R38
C37
C100
HW1
R46
IC9
OUT1
1
GND
2
NC
3
ALC
4
VCC
5
NC
6
OUT2
7
NC
8
IN2
9
NF2
10
NF1
11
NC
12
IN1
13
NC
14
HC69 HC68
R23
R98
D18
D9
D13
HC81
HC62
HC64
DS1
S29
1
S27
3
S28
2
S26
4
S31
5
S25
6
S24
7
S23
8
S22
9
S39
10
S38
11
S37
12
S36
13
S21
14
S20
15
S19
16
S18
17
S30
18
S17
19
S16
20
S15
21
S14
22
S13
23
S12
24
S11
25
S10
26
S9
27
S8
28
S7
29
S6
30
S1
31
S5
32
S4
33
S0
34
S3
35
S2
36
COM3
37
COM2
38
COM1
39
COM0
40
DS9
DS10DS8
DS5
DS6
DS7
D1
X1
DS2
C44
C42
D12
R30
IC3
G
IO
C4
C128
C129
C130
C131
HC60
HC54
HC55
HC56
HC58
R16
R5
IC2
OUT
1
VDD
2
VSS
3
NC
4
CD
5
C26
+
C25
HC63 HC61
HC75
HC74
HC73
HC72
HC71
HC76 HC77 HC79
HC133
C59
C65
C66
HC67
HC70
HC78
HR99
R68R67
HC134
IC16
GND
1
VIN
2
VOUT
3
NC
4
NC
5
C135
+
R9
IC7
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
TEST
7
VCC
8
R1
R2
R3
R4
R35
R14
R11
R12 R13
R40
R52
R113
C87
R110
R108
R107
R109
C136
+
C137
C138
C139
C140
+
R111
C122
R112
C5
R41
C98
R45
C89
IC1
P67/AN7
1
P66/AN6
2
P65/AN5
3
P64/AN4
4
P63/SCLK22/AN3
5
P62/SCLK21/AN2
6
P61/SOUT2/AN1
7
P60/SIN2/AN0
8
P57/ADT/DA2
9
P56/DA1
10
P55/CNTR1
11
P54/CNTR0
12
P53/RTP1
13
P52/RTP0
14
P51/PWM1
15
P50/PWM0
16
P47/SRDY1
17
P46/SLCK1
18
P45/TXD
19
P44/RXD
20
P43/ /TOUR
21
P42/INT2
22
P41/INT1
23
P40
24
P77
25
VL1
100
C1
99
C2
98
VL2
97
VL3
96
COM0
95
COM1
94
COM2
93
COM3
92
AVSS
91
VREF
90
VCC
89
SEG0
88
SEG1
87
SEG2
86
SEG3
85
SEG4
84
SEG5
83
SEG6
82
SEG7
81
SEG8
80
SEG9
79
SEG10
78
SEG11
77
SEG12
76
P76
26
P75
27
P74
28
P73
29
P72
30
P71
31
P70/INT0
32
RESET
33
XCIN
34
XCOUT
35
XIN
36
XOUT
37
VSS
38
P27
39
P26
40
P25
41
P24
42
P23
43
P22
44
P21
45
P20
46
P17
47
P16
48
P15/SEG39
49
P14/SEG38
50
P13/SEG37
51
P12/SEG36
52
P11/SEG35
53
P10/SEG34
54
P07/SEG33
55
P06/SEG32
56
P05/SEG31
57
P04/SEG30
58
P03/SEG29
59
P02/SEG28
60
P01/SEG27
61
P00/SEG26
62
P37/SEG25
63
P36/SEG24
64
P35/SEG23
65
P34/SEG22
66
P33/SEG21
67
P32/SEG20
68
P31/SEG19
69
P30/SEG18
70
SEG17
71
SEG16
72
SEG15
73
SEG14
74
SEG13
75
HR106
D17
Q13
C99
C600
R558
R95
R93
R94
R562
R563
R564
R561
C10 C11 C12 C13 C18
R10
C48
C53
D14
Q2
C45
Q4
C88
+
W10
R7
R8
D4
R104 R100 R101 R103
R102
Q6
Q5
Q12
Q17
HC132
C35
S2
UP
S6
1
S10
4
S14
7
S18
ENT
S19
0
S15
8
S11
5
S7
2
S4
SQL
S8
3
S12
6
S16
9
S20
MR
S21
F
S9
CLR
S5
POWER
S3
DWN
S17
BANK
S13
ANL
Q16
Q11
6 5 43
2 1
Q8
3 2 1 5
4
Q9
3 2 1 5
4
Q15
6 5 43
2 1
D3
IC8
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
S1
E
UP
DN
IC15
A0
1
A1
2
A2
3
A3
4
A4
5
A5
6
NC
7
NC
8
A6
9
A7
10
NC
11
VSSD
12
VSSA
13
SP+
14
SP-
15
VCCA
16
MIC
17
MIC REF
18
AGC
19
ANA IN
20
ANA OUT
21
NC
22
PLAYL
23
PLAYE
24
RECLED
25
XCLK
26
REC
27
VCCD
28
C601

Icom IC-A23 Specifications

General

Brand	Icom
Model	IC-A23
Category	Transceiver
Language	English