Icom IC-A14 Service Manual - Section 9
*; Refer to “PARTS LIST.”
9 - 1
SECTION 9
VOLTAGE DIAGRAM
SML-A12M
T
DS
2
0.001
C674
470P
C691
1k
R719
1k
R734
100P
C623
100P
C637
[6]
S13
MA2S111
*D72
0.001
C604
0.001
C632
1k
R745
0.001
C602
[9]
S17
MA2S111
*D70
[ENT]
S19
100P
C639
[1 ]
S7
0.47
C681
[7 ]
S15
0.001
C683
0.001
C684
0.47
C679
1k
R732
MA2S111
*D73
1k
R733
R705
10K
0.
1
C651
0.001
C645
[MR]
S5
S-24CS64A0I
IC25
1
A0
2
A1
3
A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
0.001
C626
[8 ]
S16
1k
R736
[
]
S4
1k
R723
1k
R744
0.001
C646
1k
R735
0.01
C676
15K
R717
33K
R751
2.2M
R765
1k
R720
1k
R722
100K
R702
0.47
C680
0.001
C641
MA8051
D67
MA2S111
D64
SML-A12M
T
DS
3
0.001
C699
0.
1
C671
[5 ]
S12
M A2S111
D69
0.01
C678
0.001
C636
[2 ]
S8
0.01
C675
[
]
S3
1k
R737
N TCG16
R701
0.
1
C686
1k
R747
0.
1
C690
[CLR]
S2
0.01
C663
0.001
C633
1k
R746
0.1
C670
0.01
C660
100P
C638
[0 ]
S20
0.001
C661
2.2K
R750
0
R729
UNR9213J
Q79
[FUNC]
S21
1k
R724
100P
C622
[3]
S9
R758
3.9K
100K
R716
0.
1
C698
0.47
C682
47P
C692
10K
R712
100P
C621
0.001
C640
[4 ]
S11
0.001
C708
0.001
C706
0.01
C657
0.
1
C658
EVQ-PUL
S24
SW-167
S25
SW-167
S26
SW-167
S27
1k
R725
0.
1
C673
0.01
C672
2SA1576
Q75
R759
220
2SC4116
Q76
0.
1
C778
EM6027P
MC 1
EW-460
IC32
I
O
G
100K
R838
100K
R839
UNR9213J
Q88
0.001
C779
100K
R718
MA2S111
D85
BD5230G
IC24
1
VOUT
2
VDD
3
GND
4
NC
5
CT
XP1501
Q71
1
2
34
5
R708
3.9k
R706
10K
S-812C36AMC
IC22
1
GND
2
VIN
3
VOUT
4
NC
5
NC
XP4315
Q89
1
2
3
4
5
6
R757
5.6K
SKHLLFA010
S23
10K
R853
0.1
C669
0.
1
C685
2SB1132
Q70
MA2S111
D86
MA2S111
D87
MA2S111
D68
0.
1
C625
47K
R825
22K
R861
0.01
C642
U NR9112J
Q91
U NR9213J
Q92
1k
R862
1k
R863
100K
R864
100K
R865
R738
100K
10K
R743
0.01
C792
0.01
C664
0.
1
C647
0.01
C650
0.01
C649
47
C648
47
C659
2.
2
C656
12K
R731
22P
C667
22P
C668
TC7W04FU
IC33
1
2
3
4
5
6
7
8
0
R834
10K
R866
CR-867
X3
390K
R766
S11313
DS1
1
SEG1
2
SEG2
3
SEG3
4
SEG4
5
SEG5
6
SEG6
7
SEG7
8
SEG8
9
SEG9
10
SEG10
11
SEG11
12
SEG12
13
SEG13
14
SEG14
15
SEG15
16
SEG16
17
SEG17
18
SEG18
19
SEG19
20
SEG20
21
SEG21
22
SEG22
23
SEG23
24
SEG24
25
SEG25
26
SEG26
27
SEG27
28
SEG28
29
SEG29
30
SEG30
31
SEG31
32
SEG32
33
SEG33
34
SEG34
35
C
OM1
36
COM2
37
COM3
38
COM4
UPD78F0338GC
IC26
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
NOISE
PCK
THERMC
KS0
KS1
KS2
LIGHT
C
KR4
EXTREGC
KR3
INTPTT
KR2
KS3
KR1
KR0
INI
PDAT
A
J
ACKDET
PDATA
PCK
PSTB
PSTB
EXTREGC
INTMIC
UNLK
DASTB
DETO
DETO
PTT
JACKDET
SDATA
SCK
CLONE
TXC
RFDETV
RFDETV
RFDETV
RSSI
VOX
AGCOFF
NOISE
SPCON
LIGHTC
BEEP
VOL2
AFC
ALCC
R5C
ANLC
MMUTE
DETMUTE
SHIFT
WXC
INTMIC
COM4
COM3
COM2
COM1
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
HSW
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG13
SEG14
SEG8
SEG12
SEG11
SEG9
SEG5
SEG6
SEG10
SEG7
SEG34
SEG4
SEG3
SEG1
SEG31
SEG32
SEG2
SEG33
SEG21
SEG22
SEG23
SEG24
SEG27
SEG28
SEG25
SEG26
C
OM4
SEG29
COM1
C
OM2
C
OM3
VCC
PCON
PCON
DASTB
SCK
SDATA
UNLK
PTT
HSW
R5C
AGCOF F
ALCC
AFC
SHIFT
MMUT
E
DETMUTE
WXC
SPCON
ANLC
LIGHT
EDATA
ECK
ECK
EDATA
SEG30
INTPTT
K-LOCK
LIGHT
KR0
KR1
KR2
KR3
KR4
INI
KS0
KS1
KS2
KS3
K-LOCK
PPS
PPS
VIN
BEEP
CLONE
+5V
CPU36V
TXC
POW
R:3.5V
T:3.5V
T:4.9V
R:4.9V
VCC
VCC
[INTPTT]
[KEYLOCK]
VOX
POW
RSSI
PCON "H"=ON
+5V
VOL2
VOL3
+3.6V
HOUT
EMBI
INT_1
INT_2
INT_3
INT_4
SQL-DN
SQL-UP
[LIGHT]
CLIN
CLOUT
+3.6V
T:3.6V
R:3.6V
Light ON:7.0V
OFF:0.0V
COMMON
CONTROL
RX (Analog voice)
TX (Digital voice)
RX (Digital voice)
TX (Analog voice)
MAIN UNIT (Left side)