Icom IC-A23 Schematic Diagrams

A B C
DS1
C1
76
SEG12
R1 SEG12
SEG11 77
SEG11
SEG10 78
SEG10
79
SEG9
SEG9
SEG8 80
SEG8
81
SEG7
SEG7
SEG6 82
SEG6
SEG5 83
SEG5
SEG4 84
SEG4
SEG3 85
SEG3
86
SEG2
SEG2
SEG1 87
SEG1
88
SEG0
SEG0
89
VCC
90
VREF
91
AVSS
COM3 92
COM3
93
COM2
COM2
COM1 94
C2 COM1
95
COM0
COM0
96
VL3
97
VL2
98
+
C2
C140 99
R2 C1
100
VL1
R3 C139
C4
C138
R4
C5
C128
C129
C130
CHASSIS
C131
S1
R107
UP
E
DN
R108
HC3 HC81
S2 S3 S4 S5
UP DWN SQL POWER
S6 S7 S8 S9
1 2 3 CLR
S10 S11 S12 S13
4 5 6 ANL
C10 C11
R564
S14 S15 S16 S17
7 8 9 BANK
R563
S18 S19 S20 S21
ENT 0 MR F
D1
R562
D2
R561
A B C
D E F
Q3
R17 D7 D8
R5
R16
R18
C22
C6
D9
IC3
C31
O I
G
+
C25
C26
IC16
IC2
R19
IC1
C135
+
50
SEG38 R98
P14/SEG38
49 SEG39
P15/SEG39
48 UNLK
P16
47
EDATA
P17
46 DASTB
P20
45
VOLCK
P21 Q6
44 VOLDATA
P22
43 SCK
P23
42 SDATA
R30
P24
41 RFSTB
P25
40
MASTB
P26
39 OE
P27
38
VSS
37
XOUT
36
XIN
35
XCOUT
34
XCIN
33
RESET
RESET
32 DCC
P70/INT0
31
KR0
P71 X1
30 KR1
P72
29 KR2
P73
28 KR3
P74
27 KR4
P75
26
P76
IC7
HR106
C44
W10
R7
R8
BDET
MC1
R111
R31
HC46
+5V
R9
R10 R32
+
KR0 C19 C49
Q10
KR1
KR2
KR3
R34
C50
KR4
C12 C13 C18
KS3
D4
INI
KS2
KS1
DS5
D3
INI
DS8
KS0
E F
1 . .
2 . .
3 . .
4 . .
5 . .
6 . .
D
G H I
D11
R36
Q5
C35
+
R21
HC32
D18
Q4
Q7
+5V
D10
+
C33
C34
R20
+
C27
C42
R22
Q11
R25 R26 R28
DS2 C86 R39
DS3
DS4
Q8 Q9
Q12
D12
IC8
9
QS VSS
10
QS
11
BUSYLED
Q8
12
Q7
13
Q6
14
Q5 CLK
15
OE
16
VDD STR
OE
C48
HR99
C45
R60
IC11
1
2
3
C51
R35
4
R110 D14
C52 C53
+
R74
1
2
3
4
5
6
7
Q1
+
Q2
C107
R14
+
C105
DS6
DS7
R15
C9
DS9 DS10
C110
R77
R81
G H I
7 . .
8 . .
9 . .
10 . .
11 . .
12 . .
J K L
R37
R38
C37
OE
BDET
CHGC
TXC
SDATA
VCC
UNLK
PCK
PSTB 10
PDATA 11
12
EXTMIC
13
14
+5V
HV 15
16
VORDET 17
RFDET 18
19
VORON
RSSI 20
HC70
HC57
+5V
Q17
Q16
R46
+
C136
R45
C87
+
C90
R43
R44
R40
IC9
8 7 HW1
R41
NC OUT2
9 6
IN2 NC
10 5
NF2 VCC
11 4
NF1 ALC
12 3
NC NC
13 2
+
IN1 GND
14 1
NC OUT1
+
8
7 LIGHTC
Q4
6
RECC
Q3
5 PLAYC
Q2
4 VORON
Q1
3 SCK
2 SDATA
D
1
MASTB
C125
R69
C101
IC13
R65
R64
1 8
2 7
R62
R61
3 6
8 4 5
R63
7 C115
6
5
D16
+
R67 R68
C102
C114
IC12 R89
14
13
12
R84
11
+
R83
10
R90
C112
9
8
IC14
1 8
2 7
C111 R85
R86
3 6
4 5
R87
R78
R93
C108
C121
R91
R80
C109
R94
R82
Parts that there is "H"sign ahead of the reference number are unmounting
J K L
APPD. CHKD. DWN.BY: DATE
ICOM
M N
1 40 JACKDET
2 39 VOLCK
3 38 RFSTB
4 37 SCK
5 36
VOLDATA
6 35
7 34
8 33 PTT
9 32 EXTPTT
J1
31 LIGHT
30 DASTB
29
28
27
26 VREC
25
24 BEEP
23 MOD
22
21
HC133
C91 R48 R52 C93
IC15
15 14
SP- SP+
16 13
VCCA VSSA
17 12
MIC VSSD
18 11
MIC REF NC
19 10
AGC A7
20 9
ANA IN A6
21 8
ANA OUT NC
22 7
NC NC
23 6
PLAYL A5
24 5
PLAYE A4
25 4
RECLED A3
26 3
XCLK A2
27 2
REC A1
28 1
VCCD A0
+
C117
C123 Q15
C118
R72
C119
+
C120
R95
D17
Q13
C600 C122
M N
2000 . 05 . 29 MODEL IC-A23
LOGIC
SCHEMATIC
DWN.NO.
DIAGRAM
Icom Inc