Icom IC-A24, Service Manual

Page: 34 / 36

11 - 2
*; Refer to “PARTS LIST.”
0.001
C231
82N L67
Q35
2SB1201
UNR9210J
Q21
330K
R296
1
C331
27K
R306
M PZ1608S221A
EP15
1
C202
22P
C362
0.001
C119
*C335
Q29
2SC4403
R148
1k
39P C43
XP4315
Q52
1
2
3 4
5
6
1 C356
18P C55
0.001
C361
0.001
C62
R103
27
0.0022 C257
82N
L56
22K
R248
10
C121
0.001
C29
0
.33 SVA
C168
0
R341
0.001
C63
0.001
C23
0.
1
C321
0.01
C108
560
R262
1P
C74
XP1401
Q1
1 2 3
4 5
R216
47K
R97
4.7K
2337
MP2
0.001
C416
0.001
C337
R135
560
MPZ2012S221A
EP16
39P C54
7P
C58
L44
1U
R8
8
68K
2SC4226
Q58
1.5K
R246
0
R338
LMV324IPW
IC18
13
12
14
18
R197
100
R291
24P
C399
M PZ2012S221A
EP3
0.001 C391
39P
C30
R75
1k
0.001
C408
R84
27K
100
C184
0
R332
R140
0
M
A2S304
D4
4
3SK293
Q11
R114
270
R155
1M
LMV324IPW
IC18
9
10
8
2SC4226
Q59
0.001 C234
1P
C15
UNR9211J
Q26
100
C195
R99
47K
R7
270
220P
C302
1
C223
R9 47K
27P
C315
5.6K
R268
120P C394
1SV271
D40
2.7K
R323
330K R293
18P
C7
L13 0.1U
L52
4.7U
39P
C212
L4 0.82
U
0.001
C313
0.001 C409
0.001 C282
0
R253
Q10
2SD1819A
R153
1M
0.001 C193
R35 10K
R41
180K
R43
220K
M A2S304
D39
R53
220K
R13 68K
0.
1
C179
2SB1201
Q22
10 MSVA
C247
0.001 C269
1 C354
2SC4215
Q16
*R6
3
1P
C70
0.001
C8
0.
1
C348
CR-791
X2
1 GND
2 GND
3
OUT 4
VCC
R68 18K
0.001
C333
8P
C306
0.001
C291
D22
M A2S728
R69
1k
0.5P
C318
R73
27K
0.001
C32
R5
2
220K
R150
100K
0.001 C237
R90
1k
R77
2.2K
0.0047
C245
56
R188
R49
47
100 *R
33
5
27K
R322
0.022 C384
0.001
C51
0.001
C67
R10 10K
R161
56K
0.001
C280
0.001
C395
M
A2S304
D1
4
2SC4215
Q15
4.7 MSVA
C238
0
R343
0.001
C38
0.01
C111
5P
C72
0
.22
C352
0.001
C10
R228
10K
R25
1k
68K R266
1SV246 D5
R211
390K
R3
4
8.2K
0 R325
0.001
C151
R213
39K
0.001
C412
L18 39N
0.001 C287
10U
L71
0.
1
C255
R104
27
220P
C340
R38
82
0.001
C360
MA2S111
D37
0.001 C296
1K
R349
2SA1586
Q50
0.001
C196
R72
470
R71
1.2K
82P
C370
100K R326
150P
C400
10
R347
CP06S
CP1
R96
56K
0.001
C407
1.5P
C316
470 R182
LMV324IPW
IC18
2
3
1
*C226
0.001
C295
47K
R285
22K
R249
15
R196
R146
0
22
P
C210
UNR9210J
Q61
0.
1
C383
LMV324IPW
IC18 6
5
7
L10
C2012C
BU4094BCFV
IC5
1 STR
2 D
3 CLK
4 Q1
5 Q2
6 Q3
7 Q4
8 GND 9
QS
10
Q’S
11
Q8
12
Q7
13
Q6
14
Q5
15
OE
16
V+
1SV271
D4
1
R78
82K
0.
1
C109
C2012C
L70
0.001
C246
0.001
C292
CP06S
CP2
*C258
0.01 C97
L1
4
4.7U
9P
C401
*C102
MA77
D17
R154
1M
1SV246
D5
1
0.5P
C16
R46
47K
UNR9211J
Q51
330K R194
R23
4.7K
0.
1
C176
3.3K
R320
HVC350B
D38
0 R339
6P
C77
0
R274
1SV271
D4
2
7P
C211
R134
1k
0.001
C48
R214
100K
0.
1
C103
MA2S304
D4
6
R21
1k
R12
47K
L42
4.7U
1 C355
CP06S
CP3
N
TCG16
R308
R108
18
270
R181
*R98
HSJ1122-010010
J2
100P
C78
CP4
CP06S
2SC4226
Q60
0.001 C241
470K
R235
0.001
C329
3P
C66
R130 2.2K
0
R233
*Q19
10K
R297
330K R295
*R80
NTCG16
R19
10P
C85
TA7368FG
IC6
1 NC
2 VCC
3 NC
4 VIN
5 RIPPLE 6
NF
7
PHASE
8
PREGND
9
PWGND
10
POUT
56K R333
R33
180
R54
220K
Q28
2SC440 3
0.22
C116
0.
1
C112
R65
470
0.001
C222
0.01
C197
22P C390
0.001 C271
0.001
C342
24P
C367
*L64
0.001 C128
2.2 MSVA
C169
15P
C13
0.
1
C52
150K R193
0.047 C239
0.22U
L85
100
C221
R26
100K
2SC4617
Q41
R95 220K
0.1
C254
470
R275
0.001
C156
15P
C14
R1
4
22K
*C307
5P
C76
D18
MA785
R83 22K
0.001
C429
2SC4215
Q17
0
R318
5.6K
R267
TC4W53FU IC
2
1 2 3 4
5 6 7 8
0.01
C88
1k
R245
0.001
C406
M
A2S304
D15
0.001
C403
D2
MA728
2SD1819A
Q14
R30
9
2.2K
R121
470
0.
1
C253
MPZ2012S331A
EP5
0.001
C249
47K
R247
ACZ1005Y
EP13
R102
100K
R18
220
0.001
C82
47K
R317
R51 100
R109
10K
N
TCG16
R319
0 R340
L17
4.7U
100
C130
2.2 MSVA
C49
47P C2
2
R225
22K
0.001
C98
*C228
27P
C5
R218
47K
MA2S304
D47
22
P
C3
R61
10K
27P
C311
0.001
C4
7
2SC4211
Q5
N
TCG16
R329
470K
R215
R160
47K
0.001 C153
9P
C369
R111
10K
HVU131
D9
L24
2.2U
2SB1132
Q7
R2
2
2.2K
R82
100
0.001
C334
0.001
C127
120P C392
100K
R234
L21
68N
M62363FP
IC17
1 VIN1
2 VOUT1
3 VOUT2
4 VIN2
5 VDD
6 LD
7 CLK
8 DI
9 VIN3
10 VOUT3
11 VOUT4
12 VIN4 13
VIN5
14
VOUT5
15
VOUT6
16
VIN6
17
DO
18
VDAREF
19
RESET
20
GND
21
VIN7
22
VOUT7
23
VOUT8
24
VIN8
*L83
0.22 C351
R29
15K
R31 22K
HEC2711-01-020
J1
0.001
C308
0.001
C274
R8
270
1M
R251
2SC4211
Q8
0.001
C276
0.01 C126
0.1
C251
0.01 C363
0.0012
C230
470 R265
2P
C73
R48
330K
R226
100K
R39
10K
TA31136FNG
IC1
1 OSCIN
2 OSCOUT
3 MIXOUT
4 VCC
5 IFIN
6 DEC
7 FILOUT
8 FILIN 9
AFOUT
10
QUAD
11
IFOUT
12
RSSI
13
N-DET
14
N-REC
15
GND
16
MIXIN
0.001
C36
D27
MA111
10U L73
XP1113
Q57
1
2
3 4
5
0.001
C68
0.
1
C17
22P C53
R3
100K
R1
7
5.6K
EP10
0.01
C114
100
R330
0.001 C289
R2
0
56
R120
56K
R64
100
0.
1
C330
HVU131
D8
R219
2.7
0
R252
R222
220K
100
R281
R162
100K
MPZ2012S221A
EP2
33P
C155
HVC350B
D48
7P
C324
R40
3.3K
560
R256
R37
82
0.001
C413
0.
1
C320
0.001
C65
0
R345
0.001
C405
R87
0
0.001
C80
R212
47K
1.5P
C317
0.001
C46
10U
L57
47K
R242
MPZ2012S331A
EP7
MA2S111
D32
0.001
C101
MA77
D6
0.001
C278
0.001
C84
0.
1
C96
0.001
C309
68 R337
0.01
C100
Q33 2SC4116
L38 0.27U
82P
C398
150P C368
R133
22K
N
TCG16
R328
SP1
0.1
C259
0.001
C87
ACZ1005Y
EP14
2SC421 1
Q18
0.001
C20
0.001 C263
R30
10
R24 22K
0.001
C172
0.001 C410
0.001
C44
R47
100K
R149
10K
0.001
C279
L51 100U
22K R258
0.15U
L82
0.001
C93
0.001
C404
0.001
C154
0.001
C312
100P
C118
22K R316
0.001
C2
4
0
.01
C95
470
R243
0.001
C152
0.001
C25
0.001 C418
R42 470
0.001
C39
15P
C150
15P
C203
0.001
C382
56P
C35
R45
47K
R142
0
R220
470
R100
270K
FL-378
*FI1
1
IN
2 OUT 3
GND
4 GND
56
0.001
C359
0.001
C61
R107
150
L50 100U
0.
1
C350
R217
47K
0.
1
C181
TB31207AFNG
IC3
1 FIN1
2 GND
3 CLK
4 DATA
5 STB
6 BS1
7 BS2
8 FIN2 9
CP2
10
GND
11
LD
12
BO
13
XOUT
14
XIN
15
VCC
16
CP1
0.001
C364
MA2S111
D36
18K
R270
R1
5
39
0.001
C415
0.001
C57
4.7K R271
R5
33K
UNR9213J
Q39
L8
27N
0.001 C92
8P
C40
M A2S077
D43
0.22U
L75
330K
R192
22P
C182
0.
1
C107
R116
47
R223
10K
M62343GP
IC16
1
AO1 2
AO2 3
AO3 4
VCC
5 GND
6 DI
7 CLK
8 LD
R210
1k
0.
1
C117
MA133
D21
R118
15
0.001
C325
8P
C310
0.001 C411
R92
56K
HAT1024R
Q24
5
D2
6
D2
7
D1
8
D1
1 S1
2 G1
3 S2
4 G2
82P
C402
0.
1
C357
D19
RB060L
W10000
1
2
0
R313
0.01 C260
4.7K
R272
UNR9115J
Q20
0.001 C293
R44
82K
0.001
C42
0.001
C125
10P
C34
0.001 C319
22P
C201
1.5K
R327
1SV246 D4
MA111
D7
0.001 C431
*R348 0
0.001
C417
0.0012
C229
0.001
C33
R81
1.5K
10U
L58
5.6K
R269
0.82U
L59
0.01
C106
0.001 C301
*C365
2.2U
L84
120P C366
0.15U
L81
10 MSVA
C250
18P
C41
10U
L72
1k
R227
D3
MA72
8
Q25
2SB1132
1k
R244
2.2U L68
0.001
C381
0
R315
0.22
C115
100K R201
100
R280
2SA1588 Q40
68P C91
1U
L80
1SS400
D31
4.7K
R254
MPZ2012S221A
EP4
0 R346
8.2K R283
0.001 C272
68K
R307
MPZ2012S331 A x3 EP8
560K
R331
1SS400
D30
0.
1 C347
H SJ1493-01-010
J5
15P C339
L11
47N
R115
22K
R147
12K
1P
C86
0.001 C187
0.001
C171
0.001 C264
L23 68N
R119
470
15P C338
2SC4403
Q6
0.001 C284
0.01
C323
0
R184
0.001
C9
R6
33K
0.
1
C396
0.001 C243
R224
33K
0.001 C294
R2
47
1SV271
D29
0.
1
C110
0.001 C220
R58
220K
0.
1
C180
0.001
C414
1P C11
0.001 C262
R91 560
R163
100K
0.82U
L60
XP4601
Q56
1
2
3
4
5
6
MA2S304
D13
0.001
C28
10
R250
47P
C420
0.01
C242
MA2S304
D45
R36
82
0.1 SVA
C50
R2
7
1k
R2
8
100
0.001
C240
150K R195
R70
1.5
K
0.001
C31
C2012C
L63
0.001 C281
0.01
C89
0.001
C326
180P C297
2791
MP3
1 2 3
47P
C299
3SK299
Q12
R3
2
68
R139
10
M A2S111
D52
0.015
C244
0.001
C45
68
*R336
MA133
D23
HVU131
D1
0.001
C336
220P
C19
82N
L55
R94
100
R231
0
0.001 C270
R145
6.8K
7P
C4
2SC3357
Q4
R1
1
4.7K
R106 100K
M
A2S304
D16
0.001 C288
L12 82N
1P
C12
0.01
C104
0
R344
0.001
C191
100
R290
NTCG16
R321
0.001
C174
NJM2107F
IC13
1
2
3
4
5
AXK5S40245P
J6
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
1.5U
L78
*C227
XP1501
Q36
1
2
34
5
R74
100K
1k
R187
0.001
C120
15 MSVA
C173
47P C75
*C64
R86
1.5K
22K
R260
R232
1M
3P
C6
1k R294
33K
R16
2SK880
Q45
100P
C79
0.001 C273
M PZ2012S331A
EP6
4.7K R273
0.001
C186
0.001
C69
2791
MP1
0
R342
Q9
2SD1819A
0.001
C190
EP11
AN6123MS
IC15
1
VCC
2
DET
3
INPUT
4
GND
5
OUTPUT
R89 27K
0.22U
L74
NJM2107F
IC19
1
2
3 4
5
L22 82N
0.00
1
C235
39P C60
Q13
2SC4215
0.001
C56
R101
330K
0.022 C385
R117
1.2K
0.001
C81
0.001
C83
D20
SB07-0
3C
0.22U
L86
0.001 C283
1k
R189
0.001
C192
*C261
0.01
C90
R4
100K
180P C393
1 C387
100
R282
LMV324IPW
IC18 V+
4
GND
11
1
C26
10 MSVA
*C37
*C99
*C113
*C4
30
4.
7
C183
4.7
C185
4.
7
C188
4.7
C224
4.
7
C225
4.
7
C256
RD01MUS1
Q3
RD12MVS1
Q2
BM02B-ASRS-T F
J4
1
2
3
4
CDBKB450KCAY24
X1
*FI 2
O I
*R6
6
*R350
SKHLLFA010
S2
SKHLLFA010
S1
*R57
*C432
L6
2.5N
L15
45.5N
L3
52.0N L2
52.0N L45
52.0N L1
45.3N
L16
45.3N
L46
23.5N
L5
31.0N
L7 31.0N
47K
R236
47K
R237
D
ETMUTE
ANLC
R5C
VORON
TXC
SDATA
SCK
DA1STB
RFDETV
UNLK
EXTREGC AFC
MOD70I
MOD30O MOD70O
MMUT
E
AGCOFF
D
A2STB
SCK
SCK
SCK
SDATA
SDATA
SDATA RFSTB RSSI
PTT
PTT
VOL
O
MOD
DETMUTE SHIFT WXC ANL
C
R5C AFC OE
WXC
VORDET
ALCC
DCIN
CHGC CHGI
H
VI
N
BEEP
ALCC MMUT
E
OE
EXTREGC
MOD30I
SBATT
D
A2STB
UNLK
PDATA
RFSTB
PCK
PSTB
D CIN
CHGC
CHGIH
CHGVH
INTMIC
RSSI
RSSI
VORDET
VORDET
VORON
VORON
RFDETV
RFDETV
DA1STB
D
A1STB
TXC
TXC
VI
N
VIN
SCK
SCK
SDATA
SDATA SBATT
SBATT
PTT
PTT
DET
O
LVIN
SHIFT
LVIN
BEEP INTMIC
PSTB PDAT
A
PCK
MOD30I
VOLI
VOLO
MOD70I
AGCOFF
WXC
DETOO
DETOO
MOD30O
MOD70O
MOD
VCC
VCC
VCC
R5S
+5V
+5V
+5V
T1
T3 T2 T4
T4 T3 T1 T2
VOLI
CLONE
EXTPTT
EXTSP
JACKDET
JACKDET
JACKDET
CLONE
CLONE
HV
HV
VCCBT
GNDBT
SBATT
LIGHT
PTT
T:6.8
R:0.0
T:3.1
R:0.0
T:3.5
R:0.0
T:0.0
R:4.8
T:0.0
R:4.7
T:0.0
R:0.3 3
T:0.0
R:4.6
T:0.0
R:1.2
T:0.0
R:3.7
R:4.3
T:0.0
T:0.0
R:3.9
T:0.0
R:4.7
T:0.0
R:7.1
T:6.8
R:7.1
T:6.7
R:0.0
(T:6.7 SideTone )
VOLTAGE LINE
Explanatory notes
TX LINE
RX LINE
• RF UNIT
• RF UNIT