Icom IC-A23 Service Manual page 35

VCC
L9
C26 R14
EXCCL3225U
0.1
22k
2 C25 C24
C31 R16 R15
R18 L10
001 0.001
0.001 50k 33 0.001
33 39nH
C30
39p
L11
68nH
W12
L8
27nH
Q3
2SK2973
Q2
MP2
C27 2SK2974
56p
R78
150k
C82
R71 C83
0.001
X24 1.2k 0.001
RX: 4.4V
C88
C91
0.01 TX: 0.0V
68p
R69
3.3k
C84
C90 R68
0.001
R66
0.01
560k
1.8k
FI1
30.050 MHz
Q12
R156
C61
1.2k 3SK151
0.001
Q13
RX: 0.1V
2SC4215
TX: 0.0V
C81
270p
R72
R70
C89
470
2.2k
0.01
C87
C204
L43
47p 33p
C92 2.7 H
0.001
C205
L44
C206 3p C203
6.8 H
15p
18p
+5V
R119
R125
100 R123 470
470
C159
R126
R121
0.001
220 470
C157
L39
R124
0.001
68k 82nH C156
0.001
R127
C161 C158
C163
6.8k
0.001 0.5p
2p
Q30
Q31
R129
2SC4226
6.8k 2SC4226
R128
220 C160
0.001
C162
Q32
C164 2p
2SC4226
2p
HV
EMBI
CHGC
SBATT
VCC
W15
Q36
XP1501
Q35
5 2SB1201
1
IC6
RX: 9.2V TA7368F
2
TX: 9.1V
1
3 4
C187 NC POUT
2
0.001
VCC
PWGND
3
NC PREGND
4
R147 R145
R148 VIN PHASE
C186 C184 C196
10k 5
1k 12k
0.001 100 RIPPLE NF
0.001
R146
C185 R141
10k
4.7 10k
STDET
EXTMIC
EXTPTT
RF UNIT
R11
22k
R6
C18
3 2 1 33k
L7
0.001
36nH
R13 R12
C23
Q1
68k 47k R9
0.001
47k
UMS1
C28
0.001
4 5
C19
L6
0.001
19.5nH
C15
C21 1p
C22
R8
27p 82p
270
R10
C20 C16
D3
10k
0.001 0.5p
MA728
R55
270k
R64
100 R56
R62 TBPS1R154K475H5Q
470k
C110
L24 R57
C85 R59
2.2 H 220k 0.1
10p 1M
C78 C70
C74
R61 47p 0.5p
0.5p
10k
C80 C77 L23 L22
C73
0.001 D16 68nH D15 82nH
1.5p 2p
MA304 MA304
R60
100k
R65 R63
C79 C75 C71
56 220k
82p 33p 82p
D17
C76 C72
MA77
RX: 0.2V 5p 5p
R58 R54
TX: 0.0V 220k 220k
C193 C192
0.001 0.001
+5V
C171
0.001
R114 R112
270 150
C153
R120
0.001
56k
C152 C149
R115
0.001 L38 0.001 R113 L37
47k
0.27 H 27k 0.27 H
Q29 C154 R117
0.001 220
2SC4403 C150
C148
8p
47p
R118 R116 Q27
C155 C151 Q28
15
33p 1.5k 0.001 2SC4403
2SC4403
9.6V
RX: 9.3V
TX: 9.0V
R108
C195
18
100
D23
MA133
R110
10
1k
9
C340
8
Q26
R139 100
7
10 UN9211
6
R109
R140
C181 C140 10k
180
0.1 0.001
C182
C183 22p
4.7
STDET
EXTMIC
EXTSP
EXTPTT
C146
0.001
RX: 0.0V
R3
R2 TX: 1.8V
100k
100
R5 R4
C17
33k 100k
0.1 C9
L4 0.001
0.82 H
C10 C8
L3 L2 L1
0.001 0.001
L5 65nH 65nH 50nH
60nH
C4
C11
D1
1p C6 7p
MA77
R7
3p
C14 C13
270
15p 15p
C7 C5 C3
D2
C12 18p 27p 22p
MA728
1p
L15 L16
50nH
54nH
C53 C54 D9
D8
22p
MA77 39p MA77
RX: 1.2V
R46
RX: 4.8V
150k TX: 0.0V
TX: 0.0V
R49
47
C64
0.47
C66
C69 L21
3p
0.001 68nH
Q10 R44
150k
Q11 2SD1819A
C67 C62
3SK230
0.001 0.001
R47
R52
D14 100k D13
220k
MA304
MA304
R45
C65
47k
0.001 R48
R51 560k L18
C68
47 C60 56nH
0.001
150p
R43
R53 220k
220k
RX: 0.0V
TX: 0.0V
C190
C191
0.001
0.001
HV
VCC
C120
D19
0.001
RB060L-40
C119
C121 0.001
9.3V
10
Q22
R103
2SB1132
22
HV
C124 R104
0.001 22
C123
D21 C122
0.001
MA133 0.001
HV
R111
10k CHGC
Q23
R105
D22
UN9210 10k Q24
MA2S728
HAT1024R
VCC
1 8
S1 D1
2 7
G1 D1
3 6
C125
S2 D2
HV
4 0.001
5
G2 D2
HV
C126
C128 C127 0.01
CHGC
R106
0.001
0.001
SBATT 100k
VCC
CHG
SBATT
RX: 2.1V
Q25
TX: 9.0V
2SB1132
C129
D27 0.01
C130 MA111
100
R107
150
C567
C572 0.001
12p
RX: 8.7V
TX: 8.3V
C565
0.001
L29
2.2 H
L31 2.2 H
L35 EXCCL3225U
L33 2.2 H
L32 2.2 H
SPE/MICE
W16
C142
C144 C143 C145 C141
L36
0.001 0.001 0.001 0.001 0.001
2.2 H
COMPLETE VIEW
ANTENNA
J1
1
2
CHASSIS UNIT
C56
0.001
C55
18p
W14
C58
7p
DCIN 9 — 12V
J1
L25
EXCCL3225U
INPUT: 9.6V
D20
SB07-03C
L26
HF50ACC
BP-200L
453215P-T
(9V~9.6V)
1
2
3
MP1
L28
EXCCL3225U
J4 P1 SP1
1 1
2 2
L34 2.2 H
J2
EXT SP/MIC
(4pin/d=3.5)