![background image](http://html.mh-extra.com/html/icom/ic-a23/ic-a23_service-manual_612408032.webp)
C91
0.0047
R48
100k
R58
100k
R59
100k
C93
1
C100
0.001
R52
120k
R109
100k
C99
0.001
C90
10
C92
0.001
R46
TBPS1R104K475H5Q
R45 33k
C89
0.001
R69
18k
C116
0.001
C117
0.1
C123
0.001
R71
18k
R70
180k
C118
0.0047
R72
4.7k
C98
0.1
SP—
VCCA
MIC
MIC REF
AGC
ANA IN
ANA OUT
NC
PLAYL
PLAYE
RECLED
XCLK
REC
VCCD
IC15 ISD1420SI
A0
A1
A2
A3
A4
A5
NC
NC
A6
A7
NC
VSSD
VSSA
SP+
NC
IN2
NF2
NF1
NC
IN1
NC
OUT1
GND
NC
ALC
VCC
NC
OUT2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R44
15k
R42
39
IC9 BA3308F
C136
10
C137
1
C88
15
R43
100k
C127
0.47
R47
1M
D15
MA8036L
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
C601
0.22
C65
0.001
C66
0.001
C59
0.001
R113
120k
+5V
+5V
HV
HV
VREC
SCK
JACKDET
TO
RF UNIT
J3
PTT
VOLCK
RFSTB
VOLDATA
OE
UNLK
TXC
SBAT
CHGC
VCC
SDATA
PCK
PSTB
PDATA
EXTMIC
DASTB
LIGHT
EXTPTT
VORDET
VORDET
VORDET
VORON
RFDET
BEEP
MOD
RSSI
+5V
HV
SCK
JACKDET
PTT
PTT
VOLCK
RFSTB
VOLDATA
OE
UNLK
TXC
TXC
SBAT
CHGC
VCC
VCC
SDATA
PCK
PSTB
PDATA
EXTMIC
EXTMIC
DASTB
LIGHT
EXTPTT
EXTPTT
RFDET
BEEP
RSSI
D11
MA2S111
Q5
UN9210
C104
1
C107
0.1
C111
3.3
C103
10
R74
220k
R73
4.7k
R75
56k
R76
33k
R79
6.8k
C105
10
R81
1.8k
C108
0.001
R80
150k
C109
0.001
C106
0.001
R77
220k
0
R84
4.7k
C113
0.1
R87
TBPS1S333K460H5Q
R85
18k
C112
0.1
R83
220k
R78
4.7k
R91
39k
R88
33k
R82
4.7k
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R64
4.7k
R63
15k
R62
220k
R61
47k
C102
470p
C115
0.1
C114
0.1
R66
220k
1
2
3
4
5
6
7
8
IC13 NJM2904V
C125
10
R68
270k
R67
10k
C119
0.001
R89
470
R90
100k
R95
22k
R93
470k
R94
820k
1
2
3
4
5
6
7
8
IC14 NJM2903V
C122
0.1
R112
2.2M
D17
MA2S111
R558
12k
VORS
VORD
Q13
2SC4211
C600
0.01
C121
0.01
R560
1M
(IC-A5 only)
VORC
R86
4.7k
5
6
7
8
D16
MA2S111
1
2
3
4
IC11 NJM2903V
R60
39k
C101
0.001
QS
QS
Q8
Q7
Q6
Q5
OE
VDD
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
STR
D
CLK
Q1
Q2
Q3
Q4
VSS
OE
OE
Q12 UN9211
IC-A23 only
R39
22k
C86
0.015
R40
100k
R41
47k
IC8 BU4094BCFV
MMUTE
SDATA
SCK
VORON
PLAYC
RECC
LIGHTC
MASTB
SDATA
SCK
VORON
PLAYC
RECC
MASTB
SDATA
SCK
VORON
VORON
+5V
MASTB
Q17
DTC144EE
Q16
DTB123EK
C87
0.0047
ALCC
6
5
4
3
2
1
C45
0.001
IC12 NJM2902V
H
R96
100k
C120
22
R559
100k
(IC-A5 only)
R65
220k
Q11
XP4315
R37
NTCCM16084LH
R38
100k
C37
0.001
R36
15k
CLOUT
CLOUT
CLIN
THERMC
+5V
1
5
10
15
20
40
21
25
30
35
Q15
XP4315
J1
6
5
4
3
2
1
3 only
IC-A23 only
5.0V
5.0V
VOR CH: 5.0V
COMPLETE VIEW