Icom IC-A220T Service Manual

32
August 2015
(Amended page)
MAIN-B UNIT (1/4)
2NDLO
1STLO
3.3C
5C
8C
10C
10C
ULO
SP_CNTL
TUNE1
VCO2
VCO1
Q0
VDD_ADJ
PCON
Q2
8T2
8T1
Q3
AM_DEP
AM_MOD
CLK
DATA
ID_ADJ
SEND
LVC
2SC4215
Q35
1kR237
DAN235E
D36
0R450
2.7k R401
10k R99
12P C105
0.01
C245
56P
C219
*C230
ADF4110BRUZ
IC47
1
RSET
2
CP
3
CPGND
4
AGND
5
RFINB
6
RFINA
7
AVDD
8
REFIN
9
DGND
10
CE
11
CLK
12
DATA
13
LE
14
MUXOUT
15
DVDD
16
VP
39P
C218
10
R378
270 R92
0.01
C300
2.2k R263
CR-860
X2
1
VCONT
2
GND
3
OUT
4
VCC
330 R88
10U L15
0.001 C252
2SC4215
Q3
27P
C244
10PC94
1M R320
10U L20
12k
R218
0.001 C268
5PC98
TC03C100A
C127
10U L22
0.001
C89
1k
R252
L68
22N
*R219
TC03C100A
C136
10U
L33
22P
C125
15P
C274
0.001
C253
*C377
10U L37
2SD2351
Q42
0.001
C90
0.001 C236
0.47 C215
0.01
C378
1kR316
10U L38
0.001
C227
10k
R238
0 R336
1kR318
22k R222
10U
L39
0.01 C99
68k R230
1kR317
10kR327
10U
L40
*C239
470 R227
100
R248
1k
R217
47k
R383
DTC144EU
Q53
10k
R101
33k
R259
0
R319
*R257
100P
C220
0.001
C273
*L32
C1608CB
L51
C2012C
L47
*R253
0.001
C109
10k
R216
2SC4215
Q2
0.1
C214
0.001
C224
15
R220
*R256
33P
C222
12P
C130
15
R223
100k
R232
0.001
C380
3P
C312
4.7
C254
0.01
C117
*C228
10PC313
0.5P
C87
100k R438
4.7k
R104
0.001
C266
*R258
56N
L57
CP17
2P C115
15P C92
0.01
C96
0.001
C384
0.001
C347
135N
L34
0.01
C167
18P
C91
0.01 C401
0.001
C233
0
R79
4.7
R386
L35
C1608CB
0.01
C124
0.001
C108
220 R262
0.1C373
*C216
0.1
C398
C1608CB
L56
HK3-S-T
CP1
82k R254
0.001
C261
0.1
C374
0.5P
C88
1U
L45
0.001
C265 330 R264
1.5U
L58
100
R233
110N
L36
4.7k
R103
39P
C225
2SC4215
Q38
CP12
82N
L31
27P
C241
10k
R247
0
R449
18P
C102
BH2221FV
IC78
1
NC
2
AO3
3
AO4
4
AO5
5
AO6
6
AO7
7
AO8
8
AO9
9
AO10
10
VDD
11
VCC
12
AO11
13
AO12
14
NC
15
LD
16
CLK
17
DI
18
AO1
19
AO2
20
GND
68k
R437
MCH3914
Q5
MCH3914
Q6
2SC5226A
Q33
2SC5226A
Q41
56P
C137
MCH3914
Q62
J8
JDV2S36E
D54
JDV2S36E
D55
JDV2S36E
D56
JDV2S36E
D57
33
C240
33
C269
33k
R463
MAX5304EUA
IC91
1
OUT
2
CS
3
DIN
4
SCLK
5
FB
6
REF
7
GND
8
VDD
TA75S01F
IC92
1
2
3
4
5
0
R465
47
R466
0.01
C433
10k
R467
22k
R468
47k
R469
470
R471
1
C435
1k
R106
330
R109
39P
C139
10k
R492
2979
MP1
NJM2904CRB1
IC94
1
2
3
4
5
6
7
8
100k
R495
10k
R497
47
R498
DTB113ZK
Q68
L1SS400
D77
10
C434
L1SS400
D82
56k
R496
UL
VCO1
VCO2
CLK
DATA
Q0
8C
SP_CNTL
TUNE1
REFADJ
CLK
DATA
Q2
8T1
8T2
UL
SP_CNTL
TUNE1
VCO1
VCO2
Q0
PCON
8T1
8T2
Q2
Q3
VDD_ADJ
AM_DEP
AM_MOD
CLK
DATA
Q3 DATA CLK AM_DEP
AM_MOD
REFADJ
PCON
VDD_ADJ
1st_Lo
8C
8CL
TX_OUT
CV
TX_VCO
5C
RX_VCO
5C
VCO_OUT
MAIN-B 2
MAIN-B 4
MAIN-B 4
MAIN-B 2
MAIN-B 3
5C
COMMON
RX
TX
5.1V
0.7V
0V
2.0V
2.0V
0V
38.4MHz
0.8Vp-p
0V
0.7V
0V
7.2V
0V
7.5V
8.3V
0V
4.8V
4.9V
0.6V
0.7V
*Refer to “PARTS LIST.”

Icom IC-A220T Specifications

General

Brand	Icom
Model	IC-A220T
Category	Transceiver
Language	English