Icom IC-A14, Service Manual

Page: 24 / 28

9 - 2
*; Refer to “PARTS LIST.”
0.001
C231
UNR9210J
Q21
1
C202
R148
1k
XP4315
Q52
1
2
3 4
5
6
0.0022
C257
0.33 SVA
C168 560
R262
R216
47K
R135
560
LMV324IPW
IC18
13
12
14
R114
270
LMV324IPW
IC18
9
10
8
1
C223
0.001
C313
0.001
C409
0
R253
10 MSVA
C247
0.001 C269
0.001 C237
0.0047
C245
0.001
C51
R161
56K
R228
10K
68K R266
R213
39K
0.001 C412
0.
1
C255
0.001
C196
LMV324IPW
Power supply: 7.2 V
Freq.: 127.050 MHz
RX level: 60 dBu
IC18
2
3
1
0.0033
C226
LMV324IPW
IC18
6
5
7
0.001
C246
0.0082
C258
R134
1k
0.001
C48
N TCG16
R308
CP4
CP06S
0.001 C241
R130 2.2K
0.01
C197
2.2 MSVA
C169
0.047
C239
0.1
C254
0.001
C156
T
C4W53FU
IC
2
1 2 3 4
5 6 7 8
R121
470
47K
R247
ACZ1005Y
EP13
47K
R317
R109
10K
NTCG16
R319
R225
22K
390P C228
R218
47K
0.001
C153
R111
10K
2SB1132
Q7
0.001
C127
0.001
C308
0.001 C274
0.1
C251
470 R265
R39
10K
XP1113
Q57
1
2
3 4
5
0
R252
R162
100K
33P
C155
R212
47K
47K
R242
0.001
C309
SP1
0.1
C259
ACZ1005Y
EP14
0.001
C172
0.001
C410
0.001
C44
R149
10K
0.001
C312
22K
R316
470
R243
0.001
C152
15P
C150
R220
470
R217
47K
MA2S111
D36
0.001
C415
R210
1k
R118
15
0.001 C411
W10000
1
2
0.01 C260
U NR9115J
Q20
0.001 C319
0.001
C417
0.001 C301
1k
R227
0.001
C381
4.7K R254
68K
R307
R115
22K
0.001
C171
0.001
C243
R163
100K
47P
C420
0.01
C242
0.001 C240
M A2S111
D52
MA133
D23
R231
0
0.001
C288
0.001
C174
0.0056
C227
XP1501
Q36
1
2
3 4
5
0.001 C273
0.001
C186
MPZ2012S331A
EP11
AN6123MS
IC15
1
VCC
2
DET
3
INPUT
4
GND
5
O
UTPUT
150P C261
LMV324IPW
IC18 V+
4
GND
11
4.
7
C188
4.
7
C256
BM02B-ASRS-TF
J4
1
2
3
4
10K
R351
1k
R352
47K R355
47K R356
0.
1
C433
15K R357
1M
R361
0.018
C435
0.018
C436
470P C437
0.01 C439
MA2S728
D53
330K R358
2.2M R362
18P
C41
82N
L55
R38
82
R37
82 0.001
C47
R36
82
R108
82
0.001
C723
R226
100K
1 C355
R74
22
0K
LMV321IDCK
IC28
1
2
3
4
5
100K
R796
0.01 C741
0.01 C742
100K R797
MB15E03SLPFV1
IC29
1
O SCI
2
OSCO
3
VP
4
VCC
5
DO
6
GND
7
XFIN
8
FIN
9
CLK
10
DAT
11
LE
12
PS
13
ZC
14
L/F
15
P
16
R
4.7K
R282
4.7K
R281
4.7K
R280
0.001 C745
100 R800
1
C746
1 C747
MA2S111
D81
R133 100K
0.
1
C749 0.001 C748
10 R801
CR-783
X5
1
VCON
2
GND
3
OUT
4
VCC
100
R806
0.01 C750
0.01
C752
1k
R808
0.
1
C753
TDA8547TS
IC31
1
GND1
2
NC
3
OUT1+
4
MODE
5
SVRR
6
SELECT
7
NC
8
OUT2+
9
NC
10
GND2
11
VCC2
12
NC
13
OUT2-
14
IN2-
15
IN2+
16
IN1+
17
IN1-
18
OUT1-
19
NC
20
VCC1
1k R812
4.7K R813
4.7K
R814
10 MSVA
C754
10K
R815
100K
R816
0.1
C434
82K R818
10K
R819
10K
R820
0.1
C755
U NR9213J
Q81
2SB1132
Q82
R150 330K
UNR9213 J
Q83
10K
R817
0.15U L87
82P C756 0.01 C757 0.01 C758
0.15U
L88
MPZ2012S331A
EP19
4.7K
R234
2SC4116
Q86
Q33
2SC4116
100
C195
100
C221
47
R829
0.001
C769
0.01
C331
R120 150K
R119 2.2K
Q25
2SA1576
2SC5006
Q58
2SC5006
Q59
2SC5006
Q60
33P C310
33P C306
33P
C338
470 R256
4.7U
L91
10U L72
0.75P
C316
0.75P
C317
39P C335
4.7U
L58
10U L71
HVC376B
D45
HVC376B
D46
1SV307
D6
33
C184
33
C250
100
C130
0
R837
4P
C773
C2012C
L63
68P
C302
2P C774
C2012C
L57
MA2S
304 D3
8
MA2S304
D48
6P C307
C2012C
L92
L64
C2012C 270P
C336
4P C775
82P
C311
22P C315
47
R313
R117
47
1.8K
R258
1.8K
R260
3.9k
R830
3.9k
R831
2.2K
R246
0.001
C413
0.001
C414
0.001
C416
R100 2.2
M
0.
1
C11
5
2.2K
R849
82K
R810
33K
R809
1 R852
1 R851
R142
0
UNR9213J
Q90
UNR9213J
Q26
UNR9213 J
Q51
XP1501
Q8
1
2
34
5
3.9k
R856
UNR9111J
Q50
R222 100K
39K
R855
22
C173
22
C49
3.9K R235 560K R237
1 C293
1
C238
HSJ1102-018540
J2
HSJ1456-010320
J5
1k
R858
82N L67
L38 0.22U
Q28
2SC5006
Q29
2SC5006
2SC4617
Q84
1 R859
1 R860
0.5P C791
LMV321IDCK
IC21
1
2
3
4
5
39K
R360
1k R359
330K
R854
0.
1
C294
0.
1
C295
33K R795
0.1
C224
1k
R349
R232
1M
0.
1
C50
R107
150
MMZ1608Y102BT
EP5
MMZ1608Y102B T
EP7
0.01 C795
MMZ1005Y102CT
EP8
680K
R822
4.7K
R823
5P
C759
8.2K R857
R40
1.5K
R145
4.7K
R147
6.8K
22K R821
9P
C151
7P C783
7P C784
R211
180K
180K R283
R214
820K
1.5M
R215
820
R826
1
C52
R92
0
0
R867
R99
68K
M A2S728
D82
68K
R868
R160
150K
R101
220K
R102
820K
220K R236
CP15S CP29
CP15S
CP30
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
0.0047
C330
0.047
C225
4.7K R872
2.2K
R870
10K
R318
0.001
C799
180K
R354
15K
R353
10
m
R871
150K
R811
820K R245
NTCG10
R873
15K
R285
4.7K
R325
LMV321IDCK
IC20
1
2
3
4
5
DETMUTE
ANL
C
EXTPTT
MODMAX
I
MOD30O
MO
D
M
A
X
O
REFV
DASTB
WXC
T4 T3 T1 T2
MODMAXO
VOL
O
J
ACKDET
CLONE
MODMAXI
MOD30O INTMIC AFC EXTREGC
RSSI
RFDETV
POW
TXC
VIN
CLONE
SCK
SDATA
JACKDET
PTT
DASTB
UNLK
INTMIC
BEEP
PSTB
PCK
+5V
PDATA
DETO
ALCC
SHIFT
SDATA
VOX
RSSI NOISE
PSTB PDATA PCK
EXTSP
MOD30I MMUT
E
S
PCON
NOISE
SPCON
AGCOFF
MODMONI
BEEP
UNLK
VOL2
VOL3
EXTREGC
SCK
AFC MMUT E
DETMUTE
SHIFT R5C
ALCC
ANLC WXC
VOLI
RFDETV
VCC
REFV
REFV
T4
POW
HV
+5V
VOX
PTT
+5V
R5C
TXC
PPS
PPS
VCC
R5S
MOD
MOD
VOLO
VOLI
MOD30I
T:5.4V
R:0.0V
T:0.0V
(INT SP) R:6.3V
T:7.0V (J2 is open terminal)
R:0.0V
+5V
+5V
+5V
FIN
FIN
LO
RSSI
2nd-LO
+5V
DET
LO
VCC
2nd-LO
LO
R SSI
F MDET
TXLO
TXV
HV
AM DET
R5S
NOISE
NOISE
+3.6V
VCC
GND
POW
MOD
RFDETV
REFV
T4
RX-VCO
TX-VCO
+3.6V
+3.6V
T:0V
R:3.9V
T:4.1V
R:4.1V
T:3.9V
R:0V
T:2.0V
R:2.0V
T:0.4V
R:0.4V
T:2.4V
R:0V
T:1.0V
R:0V
R:2.1V
T:2.1V
R:2.5
T:0.0
<When connecting an EXT SP>
(EXT SP) R:7.0V
T:2.4V
R:2.4V
R:4.7V
T:0.0V
<TX with EXT MIC(PTT)>
COMMON
CONTROL
RX
TX
MAIN UNIT (Center)