Icom IC-A220 Service Manual

26
August 2015
(Amended page)
RF
SW
BPF
CERAMIC
RF
SW
BPF
XTAL
RESET
+5
REG
LPF
BPF
CERAMIC
IF
AMP
IF
AMP
AF
AMP
IF
AMP
IF
AMP
LPF
ALC
AMP
BPF
XTAL RF
SW
AM
DET
RF
SW
BPF
RF
SW
RF
AMP
RF
SW
BPF ATT
LO
AMP
BPF
AF
AMP
LPF
BUFF
LPF
ANT
SW
APC
AMP
PWR
AMP
DRIVE
PRE
PWR
DET
DRIVE
PRE
HEAT SENS
SEND
SW
TX/RX
SW
PRE
AMP
BUFF
LPF
LPF
TX_VCO
FIL
RIPPLE
RX VCO
BUFF
VCO
SW
PLL
IC
BUFF
VCO
SW
FIL
LOOP
BUFF
AGC
DET
FM
DET
BUFF
1
COM
2
A
3
B
4
COM
5
A
6
B
78
S2
S3
S4
S5
S6
1
2
3
4
5
6
7
ANT
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
2627
D29
CLK
IC7
FIL1
E-VOL
IC70
Q45
IC6
FIL2
IMP
IC32
D1,D2,D3
CONV
IC37,IC38
IC76
HP
IC26
IC3
IC9
D58,D59,D60,D61
D66,D67,D68,D69
D20
IC2
IC69
IC13
IC11,IC12,IC14
IC22
Q1,Q2,Q3
IC68
SHIFT
IC8
IC8
CLK
IC7
IC14
EC
D19
LIGHT
IC4
DUAL
IC9
SW
FI3
SENSOR
MEM
FI4
HP
LED
ANL
RCL
IC13
IC8
D27
AMP
DRIVE
SW
SWAP
RS232
Q58,Q59
D28
FI6
CTRL
DRIVER
Q20
IC45
LED
AM/FM
IC10
IC39
Q26
D35
DRIVER
SW
Q4
Q25
D33
2ndIF
16MHZ
IC43
Q24
E-VOL
X1
FI5
ANL
Q21
IC
SW
DATA
DS1-10
MOD/AF
CTRL
FIL1
CLK_IC12,DATA_IC11,CDC
16V
+3.3
REG
+3.3
REG
3.3C
IC5
5C
RESET
OEL CONTROL
VOLTAGE
DET
10C
PHOTO
RXD
TXD
IC4
RSSI
NOISE
BPOUT
INCS
REML
MI1L
MI2L
PTT1_O
D62,D63,D64,D65
D70,D71,D72,D73
RSSIL
NOISEL
X1
FMDET
IFI
8C
AGC2
AGC1
Q60,Q61
BUFF
T4
IC71,IC80
CTRL
SP OUT
IC92
POWER DAC
AMP
AF
IC91
MOD
IC17
Q16
FET
RL1,Q9,D18
DRIVER
PWM
MOD V
SP
MIC1
MIC2
I2DAT
I2CLK
D502,D503,D504
D500,D501
D507
Q501 Q504Q500
IC500
J504
J3
J501
8T1
8T2
10C
PCON
PROTECT
MOD
IC501
Q502,Q503
AM/FM
TUNE1
AM/FM
SW
IC52
Q48
J8
MODV
PCON
10C
8T1
Q41
D36
Q35
J6
J503
J3
EMIFIL
POWER
SW
FI1
Q11
IC93
DC-DC
IC5
Q66
D26
DC-DC
D32
IC31
D50
DC-DC
IC75
REG
IC42
IC44
REGREG
IC84
40C
40C
10C
10C
8C
8C5C
5C
3.3C
SW
3.3C
Q67
REG_C2
TCXO
X2
38.400MHz
CLK
Q6
Q62
IC47
D56,D57
Q42
UL
Q3
8C
Q0
Q5
DATA
Q2
D54,D55
Q38
Q33
10C
MI1L
REML
16V
A,B,TXD,RXD
BPOUT
DATA,CLK,PON
I2DATA,I2CLK
INCS
MI2L
PTT1_O
RSSI
NOISE
10C
I2DAT,I2CLK
A,B,TXD,RXD
DATA,CLK,PON
INCS
PTT1_O
RSSIL
NOISEL
MI1L
MI2L
10C
BPOUT
16C
REML
VR
VR
MONIS
PON
J1 J3
Surge
Stopper
PON
+B
RXD_I
TXD_I
PTT1_I
INCOM_I
HP
MIC1
MIC2
AUX1
REM_I
AGCOUT
SP
PTT
REM
MIC1
AGC
HP
MIC2
AUX IN
INCOM
SP
LIGHT
LIGHT
RXD
TXD
RXD
TXD
J4
D6
D7,D10
D5
J7
+B
J10
DC IN
SP_CNTL
VOX
IC3
AMP
IC
DET
D16,D17
MI1L
MI2L
IC25
REG
IC89
10C
REG
IC90
10C
8C
8T2
RX
R8
8T1 8T1
SEND
SW
D76
SW
TX
R8
Q29
Q32
8T2
SW
Q30
SP_CNTL,TUNE1
Para
IC49
TX,RX,REG_C2
Seri/
DATA,CLK
DECODER
DRIVER
A,B
FIL1,FIL2
REFADJ,PCON
D/A
Q0
DATA,CLK
CONV
VCO1,VCO2,SEND
Q3
BCD/Deci
ICNTL,ANL
AM/FM,MM
Q2
Q2
87
C
I8
4
CI
MM
OSC
WAVE
TRIANGLE
IC16
3.3C
PON
VR
MONI
3.3V
TX_OUT
16C
R8
R8
AGC1
AM/FM
Q55
AGC2
SW
AGC3
IC81
PROTE
CTION
DET
DET
AM/FM
D53
D52
2nd_Lo
2nd_Lo
AGC3
C5C
8
SW
IC67
8C
IC6
REG
10C
8T1 8T2
5C
DATA,CLK
I2DATA
I2CLK
DATA
CLK
R8
D23
REG_C2
Q15
40C
10C
5C
3.3C
VCO1
VCO2
5C
5C
J2
D74,D75
J13
Q64
J1
J9
8C
INCS
PTT1_O
D4,D5,D6
REML
8C
PTT1_I
INCOM_I
REM_I
REG
IC54
40C
8C
3.3C
3.3C
3.3C
ESD
3.3C
8C
AGCOUT
5C
IC15
3.3C
3.3C
A,B
C
S1
R1
J502
J500
10C
10C
10C
8T1
PCON
8T2
J8
Q50
10C
EMIFIL
FI2
D1,D2
J1
DS11
ULO
SW
Q53,D82
10C
BUFF Q68,D77
IC94
OLULU
SEND
ID_ADJ
ID_ADJ
RXD_O
TXD_OTXD_O
RXD_O
8T1
5C
AM/FM
5C
AUX1
Q3
8T1
+24
AMP
ANL
+8
CLK
I2CLK
I2DAT
ICNTL
+8
+9
MUTE
PROTECT
SW
VDD_ADJ
+40
+10
+16
+8
+5
+3.3
3.3C
FRONT-B UNIT
IC1
OEL DISPLAY
VOLUME-B UNIT
TX&RX=118.0-136.975MHz(Ch Spacing 25kHz)
2ndIF=450kHz
CPU
1st MIX
RX LINE
TX LINE
TX&RX=118.0-136.992MHz(Ch Spacing 8.33kHz)
COMMON LINE
1stIF=38.85MHz
MAIN-B UNIT
DATA BUS LINE
CONTROL LINE
PA-B UNIT
D-CONNECT/-A UNIT
Band
Rejection
Filter
118.0-136.992MHz(Ch Spacing 8.33kHz)
118.0-136.975MHz(Ch Spacing 25kHz)
TXVCO=
156.85-175.825MHz(Ch Spacing 25kHz)
RXVCO=
156.85-175.842MHz(Ch Spacing 8.33kHz)
Programmable
OSC
SECTION 8 BLOCK DIAGRAM

Icom IC-A220 Specifications

General

Brand	Icom
Model	IC-A220
Category	Transceiver
Language	English