Icom IC-A220 Service Manual

Sep. 2009
8 - 1
SECTION 8 BLOCK DIAGRAM
LPF
ANT
SW
ATTBPF
RF
AMP
BPF
BPF
XTALIF
AMP
IF
AMP
IF
AMP
IF
AMP BPF
CERAMIC
ANT
RF
SW
RF
SW
RF
SW
RF
SW
RF
SW
BPF
CERAMIC
RF
SW
BPF
XTAL
AM
DET
PWR
AMP
DRIVE
PRE
DRIVE
PRE
PRE
AMP
PWR
DET
APC
AMP
APC
CTRL
TX/RX
SW
BUFF BUFF
TX_VCO
RX VCO
PLL
IC FIL
LOOP
VCO
SW FIL
RIPPLE
J1
1
2
REVERSE
CONNECT
PROTECT
EP1
+5
REG
+8
REG
AF
AMP
HPFLPF
SP
MC1
LPF
MC2
ALC
AMP
+8
REG
VCO
SW
2SENSOR_1SWS1
1
COM
2
A
3
B
4
COM
5
A
6
B
78
SW12
S2
SW12
S3
SW12
S4
SW12
S5
SW12
S6
TP76N00NA
R1
1
2
3
4
5
6
7
GATE
CTRL
LEVEL
CONV
RESET
+3
REG
+5
REG
X1
SML-512DW
DS1
BUFF
BUFF
BUFF
BUFF
HEAT SENS
SEND
SW
BUFF
BUFF
LINE
FILTER
AF
POWER
AMP
FET
DRIVER
PWM
MOD
POWER
SW
TRIANGLE
OSC
LINE
FILTER
T8
SW
R8
SW
ANL
SW
MOD/AF
TCXO
E-VOL
IMP
CONV
HP
5V
8V
CPU
RF
IF
AGC_3
AGC
ANL
SW
IC48
AM/FM
SW
2ndIF
E-VOL
IC
VOX
AMP
IC
DET
D1,D2,D3
D502.D503.D504
D10,D11IC69 D13,D14
IC68
1st MIX
D19FI3
FI4
D27
D28
Q20IC39
1stIF=38.85MHz
IC43FI5
FI6
IC45
Q26Q25Q24
Q21
IC81
IC81
D29
IC70
IC32 IC38
IC26
IC2 IC13 IC22 IC8
IC14
IC4
T4
IC6
IC3 D16,D17
PA UNIT(other Ver.)
Q500 Q501 Q504
D36
D500,D501
SP OUT
CTRL
D18
Q9
Q41
Q35 Q33
IC47
D21
Q5
Q2
X2
HP
AMP
RX LINE
TX LINE
COMMON LINE
IC25,IC71,IC80IC17 Q15,Q16
Q38
Q3
Q42
8V
DATA-CLK UL
BCD/Deci
DECODER
Seri/
Para
DRIVER
10V
REG
D12
Q11
IC31
IC16
EC
DUAL
MEM
RCL
SWAP
WAVE
LE
AUX
D/A
CONV
IC78
UL
SW
8T2 8T1 R8
DATA-CLK
PCON TUNE1
RX TX Q1 SEND VCO2 VCO1 FIL2 FIL1 AUX BPF1 BPF2 DATA-CLK
PCON
AM/FM
FIL1
FIL1
FIL2
AM/FMAM/FM
VCO2 VCO1
TUNE1
ANL
ANL
ANL
Q0
SP_CTRL
SP_CTRL
Q0 LE
IC49
Q1 Q2 Q3
Q3
Q2
Q1A
B
AM/FM
RX TX SEND
Q32Q30Q29
A
B
+16
TEMP
SENSOR
EEP
ROM
SHIFT
CLK
LIGHT
SENSOR
LED
DRIVE
CTRL
LED
DRIVER
BEEP
LEVEL
ADJ
DATA
CTRL
CLK
DATA-CLK
EL
IC6.IC7,IC8
IC3
R29
IC8,IC11,IC12
Q4,Q5
IC15
D3
IC9
D2
IC17
RS232
DRIVER
IC10
Q6
9.8304MHZ
X1
IC5
DS1-10
MAIN UNIT
FRONT UNIT
IC4
VOLUME UNIT
DATA-CLK
IC48
TX&RX=118.0-136.975MHz(Ch Spacing 25kHz)
2ndIF=450kHz
IC52
AM/FM
SW
D20
IC81
IF
AGC_2
IC7
Q6
D22
C
REG_C2
C
+16
REG
16V
REG_C2
IC75
RL1
IC76
IC9
BEEP
AM_MOD
AM_MOD AM_DEPTH
AM_DEPTH
SW
MM
IC8
Q58,Q59,Q60
BPOUT VDD_ADJ
VDD_ADJ
BPOUT
IC42
IC44
REG
IC5
IC2 IC16
IC501
Q502,Q503
PROTECT
PROTECT
SW
Q53
Q45
+B
Q505,Q506
Q62
IC500
IC500,IC502
PA-EUR UNIT([EUR-01],[EUR-02])
Except [USA-02]
Except [USA-02]
TX&RX=118.0-136.992MHz(Ch Spacing 8.33kHz)
other Ver.
[EUR-01], [EUR-02]
38.400MHz

Icom IC-A220 Specifications

General

Brand	Icom
Model	IC-A220
Category	Transceiver
Language	English