Icom IC-A220T Service Manual

9-12g
The underlined parts have been updated from the previous version of the addendum, or the original pages.
(Amended page)
July 2019
4.0 V
24.1 V
33.4 V
3.1 V
7.7 V
RX: 2.8 V
TX: 0 V
RX: 4.4 V
TX: 0 V
AM Mode: 11.7 V
FM Mode: 0 V
AM Mode: 0 V
FM Mode: 1.3V
RX: 2.8 V
TX: 0 V
RX: 5.1 V
TX: 0 V
RX: 5.1 V
TX: 0 V
RX: 5.1 V
TX: 0 V
RX: 5.1 V
TX: 0 V
8.1 V
8.1 V
8.1 V
8.1 V
4.0 V
4.1 V
0 V
0 V
0 V
0 V
4.0V
4.1 V
G
H
E
F
C
D
D
A
B
Wide Mode Narrow Mode
A
B
C
E
F
G
H
40C
8C
1STLO
2NDLO
IFI
IFO
5C
FMDET
TUNE1
FIL1
FIL2
AGCOUT
NOISEL
RSSIL
R8
AGC3
DET
AM/FM
*FI5
I O
10k
R420
0.01 C232
47
R44
9P
C353
2.2k
R202
0.1
C168
0.1
C385
JMS-1+
IC68
1
GND
2
IF
3
RF
4
GND
5
GND
6
LO
NJM2904V
IC52
1 2 3 4
5 6 7 8
82P
C354
100P
C170
5.6k
R188
CP8
0
R70
4.7k
R421
C2012C
L13
0.01
C234
0
R177
82P
C355
5P
C57
120P
C194
1k
R192
1.2U
L61
27P
C84
C2012C
L64
R54
0
120P
C193
1.2U
L62
0.01
C235
33P
C319
C2012C
L65
C2012C
L50
1SV307
D19
0.0047
C179
C2012C
L42
0.1
C386
470
R14
C2012C
L66
0
R305
0.001
C18
1SV307
D27
0.015
C388
0.01
C237
56P
C318
0.1
C19
0.01
C330
0.1
C387
C2012C
L59
4.7k
R46
1SV307
D20
0.001
C27
0.033
C389
100k
R17
0.01
C289
1SV307
D28
0.001
C39
22N
L11
0.1
C390
4.7k
R23
0.01
C290
0.001
C74
100k
R356
C402
10k
0.01
C331
0.1
C391
4.7k
R18
0.01
C291
0.001
C62
CP15
0.01
C75
2.2k
R340
0.1
C392
4.7k
R29
0.01
C292
100k
R22
4.7k
R24
18
R59
0.01
C77
0.01
C208
0.001
C17
R440
150
R341
100k
330
R66
100k
R164
4.7k
R149
100
R10
R342
100k
10k
R402
47
R168
100k
R45
4.7k
R148
33P
C320
0.001
C44
FL-306
FI3
1
IN
2
OUT
3
GND
4
GND
56
R25
100k
0.001
C30
0
R312
1U
L1
FL-307
FI4
1
IN
2
OUT
3
GND
4
GND
56
33P
C64
0.01
C303
100k
R49
0.01 C76
CP13
470
R185
10P
C147
2.2k
R151
5P
C31
82
R72
5P
C20
6.8k
R344
3P
C142
2SC4116
Q50
NJM2902V
IC81
1
2
3
4
5
6
7 8
9
10
11
12
13
14
0.001
C53
1P
C97
0.39U
L7
0.1
C335
0.001
C174
JTBM450CX24
X1
27P
C148
C2012C
L12
0
R403
0
R363
1.5k
R297
0.001
C325
0.01
C209
4.7k
R8
1
C169
12P
C143
0.001
C69
1.5U
L49
1.8k
R215
4.7k
R77
CP9
C1608CB
L53
0.001
C36
RB876W
D52
CP10
DMC561040
Q48
1
2
34
5
C1608CB
L52
470k
R406
0.001
C4
0.01
C213
0.001
C65
22
R206
0
R6
10k
R213
C160
0.01
J3
0.01
C46
0.01
C202
0
R7
4.7k
R409
0.001
C2
10k
R214
15P
C80
18P
C155
470k
R408
ERA-50SM+
IC69
3
2
1
4
4.7k
R50
C161
0.01
TC4W53FU
IC43
1
2
3
4
5
6
7
8
470k
R410
820
R372
4.7k
R74
100k
R208
0.001
C68
0.1
C191
0
R390
TC4W53FU
IC45
1
2
3
4
5
6
7
8
27k
R411
1k
R298
0.1
C198
L48
C1608CB
C258
18P
0
R414
10
R299
330
R58
0.1
C10
33k
R393
*FI6
I O
100
R415
47
R300
2.2k
R73
1k
R194
33k
R394
0
R61
0
R416
0.01
C229
0
R374
22
R62
DTC144EU
Q55
56k
R417
0
R375
CP16
1.2k
R181
1.5U L60
0.01
C231
0
R376
220k
R197
HK3-S-T
CP5
150
R169
82
R419
C2012C
L63
8P
C352
82k
R201
HK3-S-T
CP11
0.01
C166
0.01 C37
1.2k
R51
1.2k
R302
0.1
C45
1.2k
R303
1.2k
R304
10
C32
68k
R165
BA595
D1
BA595
D2
BA595
D3
AA32416A
IC39
1
OSCI
2
OSCO
3
MIXO
4
VCC
5
IFIN
6
DEC
7
FILO
8
FILI
9
AFO
10
QUAD
11
IFOUT
12
RSSI
13
NDET
14
NDO
15
GND
16
MIXI
CF20
CP20
E526HNA
L2
E526HNA
L4
E526HNA
L8
E526HNA
L10
NJM78L24UA
IC54
I
O
G
3SK263
Q20
1SV282D66 1SV282D67
1SV282
D68
1SV282D69 1SV282D70 1SV282D71
1SV282
D72
1SV282D73 1SV282
D58
1SV282
D59
1SV282
D60
1SV282D61 1SV282D62
1SV282
D63
1SV282
D64
1SV282D65
2SC5415A
Q45
L1SS400
D53
1.2U
L3
1.2U
L9
0
R501
0.1
C336
0.047
C171
NTCG16
R502
22
R418
1.2k
R422
150
R512
1SV307
D83
RB706F D84
3P
C38
0.001
C3
0.001
C502
0
R508
3.9k
R407
2.2k
R405
0
R404
0
R16
R8
FIL2
FIL1
FIL1
AM/FM
TUNE1
FIL1
FIL2
AGCOUT
NOISEL
RSSIL
R8
R8 R8
AGCOUT
DET
AGC3
DET
AM/FM TUNE1
AM/FM
AGC3
RSSIL
NOISEL
AGC_oUT
5C
DET
AGC1
8C
(9K)
(20K)
RSSI
RX IN
AGC2
RF_AGC
BPV
1st_Lo
TUNE
FM_DET_OUT
AGC3
2nd_Lo
8C
MAIN-B 3/4
MAIN-B 1/4
MAIN-B 2/4
Explanatory notes
TX Line
RX Line
Voltage Line (8V)
Voltage Line (5V)
Voltage Line (40V)
• MAIN-B UNIT 4/4 (for only IC-A220)

Icom IC-A220T Specifications

General

Brand	Icom
Model	IC-A220T
Category	Transceiver
Language	English