Icom IC-A220T Service Manual

33
August 2015
(Amended page)
MAIN-B UNIT (2/4)
IC53
RSSIL
NOISEL
8T1
8T2
VCO1
VCO2
Q0
Q2
PCON
VDD_ADJ
SP_CNTL
ULO
FIL1
FIL2
ICNTL
ANL
AM/FM
MM
I2CLK
I2DAT
BPOUT
AM_DEP
R8
MI2L
MI1L
Q3
AGCOUT
8T2
8T1
DATA
CLK
AUX1
AUX2
HP
MIC1
MIC2
GND
40C
10C
8C
5C
3.3C
CLK
DATA
AM/FM
ID_ADJ
SEND
LVC
0.01 C121
100k
R93
ACF321825
FI2
0.47
C138
*C120 *C119 *C114
470P
C26
0.001
C28 33P C33
68k
R71
2.2k R75
0.01 C101
15k R85
15k
R91
10k
R105
*C111
100P C128
0.1
C116
0.01
C113
BU2099FV
IC48
1
VSS
2
NC
3
DATA
4
CLOCK
5
LCK
6
Q0
7
Q1
8
Q2
9
Q3
10
Q4
11
Q5
12
Q6
13
Q7
14
Q8
15
Q9
16
Q10
17
Q11
18
SO
19
OE
20
VDD
BA08FP
IC42
IO
G
*C112
0.47 C106
4.7k R245
0
R32
DTB113ZK
Q30
DTB113ZK
Q32
HIP4081AIBZ
IC17
1
BHB
2
BHI
3
DIS
4
VSS
5
BLI
6
ALI
7
AHI
8
HDEL
9
LDEL
10
AHB
11
AHO
12
AHS
13
ALO
14
ALS
15
VCC
16
VDD
17
BLS
18
BLO
19
BHS
20
BHO
56k R87
0.047
C141
1SS193
D23
47kR277 4.7kR278
0.001C282
100k
R291
LM2587
IC5
1
COMP
2
FB
3
GND
4
SW
5
VIN
47kR301
0.01
C297
0.01
C298
0.01
C299
100k R313 100k R315
NJM2137M
IC16
1
2
3
4
5
6
7
8
0.001C316 0.001C315 0.001C317
2SB1302S
Q29
10k R28
56k R82
1k R328
5.6k
R343
1
C131
CP3
CP4
CP7
CP6
NANOSMDC016F
S1
0.001
C334
NJM2137M
IC25
1
2
3
4
5
6
7
8
100k
R289
39kR332
TC4S66F
IC71
1
2
3
4
5
2.2k R350
0.0047
C343
150k
R354
15k
R288
180k R353
0.1
C345
33
C342
CP14
0.01 C296
0.1
C326
0.01
C333
1k
R355
10k R292
4.7kR323 4.7kR324
4.7kR459
BD9001F
IC75
1
SW
2
NC
3
FB
4
INV
5
EN
6
RT
7
GND
8
VIN
1
C104
0.01 C40
CMS15 D50
10
R269
10
R270
1
C295
0.1
C351
J10
1
2
0.1
C197
0.1
C367
0.1
C368
0.1C371
HK-10S080
L23
J2
1
2
3
4
5
6
78
0.001C381
TC4S66F
IC80
1
2
3
4
5
4.7k R424
10k
R329
8.2k
R330
220k
R290
0.047
C403
3.3k
R76
1
C72
0.001
C404
DF10SC6
D26
7B12HA-680M
L18
7B12HA-680M
L19
7B12HA-680M
L21
*R86
22
C126
1000 C85
470 C66
BNX-002
FI1
1
B
2
CB
3
PSG
4
CG
5 6
0.01 C409
0.01 C410
XC6221A332MR
IC84
1
VIN
2
VSS
3
CE
4
NC
5
VOUT
0.01 C420
10C421
0.1 C426
J1
1
2
HK3-S-T
CP2
AHY107
RL1
10k
R425
2.2k R53
0.001
C23
10k R426
47P C22
2.2k R36
0.01 C283
0.01 C284
2.2k
R39
2SD2351
Q9
1k
R4
0.001
C5
1k
R1
DAN217
D5
0.001
C13
1k
R5
0.001
C6
1k
R2
0.001
C11
DAN217
D6
0.001
C14
DAN217
D4
0.001
C7
1k
R3
0.001
C12
0.001
C15
0.001C1
4.7k R246
CP19
4.7k R460
NJM2370U1
IC89
1
CTRL
2
GND
3
NB
4
VOUT
5
VIN
1
C428
0.1 C429
1
C408
1 C411
MPZ2012S300A
EP1
MPZ2012S300A
EP2
100
C203
J9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1617
DTC144EU
Q64
LT4363IMS
IC93
1
FB
2
OUT
3
SNS
4
GATE
5
VCC
6
SHDN
7
OV
8
UV
9
GND
10
FLT
11
ENOUT
12
TMR
10
R472
1k
R473
5.6k
R476
390k
R478
47k
R480
10k
R481
47k
R482
2SK3377
Q15
2SK3377
Q16
J13
12
34
56
78
910
11 12
13 14
15 16
17 18
19 20
330 C49
330
C25
2SA1579T106 Q66
22k
R475
68k
R477
15k
R479
120k
R474
STB35NF10T4
Q11
1
2
3
0.47
C60
DTC144EU
Q67
10k R458
10k
R483
0.47
C437
330P
C441
470 CZ
C190
10 R488
47k R486
0.01
C489
330P
C443
LM5576MHXIC31
1
VCC
2
SD
3
VIN
4
VIN
5
SYNC
6
COMP
7
FB
8
RT
9
RAMP
10
AGND
11
SS
12
OUT
13
PGND
14
PGND
15
IS
16
IS
17
SW
18
SW
19
PRE
20
BST
21
82k
R484
0.022
C442
12k
R485
CER1065B
L24
4.7
C447
0.01
C444
0.1 C210
10
C211
0.1
C205
BA05FP
IC44
IO
G
1
C187
0.001
C182
0.1
C183
150 C288
MBRD5H100T4G
D32
10
C445
10
C446
150
C287
1.2k
R491
10kR490
2.2k
R493
1
C427
1k R494
CD4028BNSR
IC49
1
4
2
2
3
0
4
7
5
9
6
5
7
6
8
VSS
9
8
10
A
11
D
12
C
13
B
14
1
15
3
16
VDD
L1SS400
D76
L1SS400
D18
L1SS400
D74
L1SS400
D75
470PC490 470PC491 470PC492 470PC493 470PC494
0.1
C436
7E05ED
L67
0.1C496
10
C332
47U
L25
CER8042
L26
0
R500
220k
R98
220k
R100
39k R487
68k
R489
470
C497
0
R503
100
C118
*R283
270k
R511
39
R514
100 ME-AX
C61
SEND
TX
CLK
DATA
TX
FIL1
FIL2
RX
ICNTL
VCO1
8T2 8T1
Q0
AM/FM
ANL
REG_C2
MM
MI1L
B
A
DATA
CLK
I2CLK
I2DAT
PTT1_O
NOISEL
SP_CNTL
VDD_ADJ
AM_DEP
R8
R8
TXD_O
RXD_O
Q2
INCS
TXD_O
RXD_O
PTT1_O
INCOM_I
TXD_I
RXD_I
PTT1_I
SP
NOISEL
REML
8T1
8T2
VCO1
Q0
Q2
PCON
VDD_ADJ
SP_CNTL
ULO
FIL1
FIL2
ICNTL
ANL
AM/FM
MM
I2CLK
I2DAT
AM_DEP
R8
MI2L
MI1L
VCO2
VCO2
Q3
REM_I REML
MI2L
INCS
AGCOUT
CLK
DATA
8T1
8T2
AUX1
AUX2
BPOUT
HP
MIC1
MIC2
GND
RXD_I
TXD_I
PTT1_I
INCOM_I
REM_I
HP
GND
AUX2
LIGHT
DATA
CLK
PON
AM/FM
PON
RX
ULO
BPOUT
LIGHT
Q3
B
A
ID_ADJ
8T2
ID_ADJ
SEND
SEND
PCON
8T1
AUX1
MIC1
MIC2
AGCOUT
SIGN7041
LVC
REG_C2
REG_C2
LVC
8C
TO REAR
TO PA-UNIT
16V
3.3C
10C
5C
+B
40C
TO FRONT-UNIT
8C
10C
R8
MoD
(TO PA)
MOD V
3.3C
16C
MAIN-B 4
MAIN-B 1
MAIN-B 3
5C
4.0V
COMMON
RX
TX
4.2V
4.5V
9.0V
13.8V
40.0V
0V
10.1V
13.8V
0.7V
0V
16.0V
8.1V
0V
0V
8.0V
0V
8.1V
8.1V
10.1V
5.1V
3.3V
*Refer to “PARTS LIST.”

Icom IC-A220T Specifications

General

Brand	Icom
Model	IC-A220T
Category	Transceiver
Language	English