Icom IC-A210 Service Manual page 228

Sep. 2009
SECTION 8 BLOCK DIAGRAM
IC81
RF
AGC
IC81
IF
AGC_3
IC81 IF IF
AMP AMP
IF
Q24 Q25
AGC_2
Q21
AM
DET
D29 IC32 IC38
AM/FM
ANL LPF
SW
IC70
ANL
AM/FM
SW
IC2 IC13 IC22
MC1
ALC AF
E-VOL
AMP AMP
MC2
IC3 D16,D17
VOX
AMP DET
IC
D18
Q9
RL1
SP
SP OUT
CTRL
IC15
DS1-10 IC17 Q4,Q5 IC8,IC11,IC12
SML-512DW
LED DATA
LED
DRIVE CLK
DRIVER
DS1 CTRL CTRL
IC9
D2
D3
LIGHT BEEP
SENSOR LEVEL
ADJ
S2
RCL
SW12
CPU
S3
MEM
SW12
IC4
S4
DUAL
SW12
S5
EC
SW12
S6
SWAP
SW12
IC10
S1 2SENSOR_1SW
RS232
2
A 3
DRIVER
B
1
COM
5
A 6
Q6 X1
B
4 9.8304MHZ
COM
CLK
7 8
SHIFT
X1
R1
2
1
3
4
5
6
7
TP76N00NA
VOLUME UNIT
2ndIF=450kHz
1stIF=38.85MHz
FI5 IC43 IC39 Q20 D27 FI3
IC45
CERAMIC
IF RF RF IF RF
2ndIF
AMP SW BPF SW IC SW
AMP
Q26
D28 FI4
FI6
CERAMIC
RF
BPF SW
Except [USA-02]
Except [USA-02]
IC9
IC8 IC8 IC14
MOD/AF
LPF HPF BUFF E-VOL
SW
IC26 IC7
T4
IC4
IC76
IMP
HP
HP
CONV AMP
BUFF
Q58,Q59,Q60 IC6
+8
SW
REG
IC48 IC78 IC49
MM
Seri/ D/A BCD/Deci
Para
CONV
DRIVER DECODER
SP_CTRL
ANL
IC48
A Q1
DATA-CLK B GATE Q2
C CTRL Q3
MAIN UNIT
REG_C2
BPOUT
C
IC6.IC7,IC8
B
LEVEL EL
A
CONV
UL
IC3
RESET
+16
IC5 R29 IC2 IC16
+3 +5
EEP TEMP
REG REG
ROM SENSOR
FRONT UNIT
8 - 1
1st MIX
D19 D13,D14 IC69 D10,D11
IC68
XTAL RF RF
BPF BPF
BPF SW AMP
D20
Q45
XTAL RF
BPF SW
BUFF
Q41 Q500 Q501 Q504
PRE PRE
PRE PWR
AMP DRIVE DRIVE
AMP
AM/FM
AM_MOD
D36
IC500
TX/RX
Q505,Q506
SW
APC
AMP
SEND
SW
IC501
Q502,Q503
AUX
Q35 Q33
BUFF BUFF
other Ver.
Q62 IC47
PLL LOOP
BUFF
IC FIL
[EUR-01], [EUR-02]
Q53
X2
Q38
38.400MHz
SW
TCXO BUFF
Q29 Q30 Q32
R8 T8
SW
SW SW
IC44
16V
+5
5V
REG
IC42
+8
8V
REG
IC31
LINE
FILTER
TX&RX=118.0-136.975MHz(Ch Spacing 25kHz)
TX&RX=118.0-136.992MHz(Ch Spacing 8.33kHz)
ANT
D502.D503.D504
ANT
ATT LPF
SW
D1,D2,D3
IC52
TUNE1
BUFF
AM/FM
AM/FM
SW
D500,D501
PA UNIT(other Ver.)
PWR
DET
PA-EUR UNIT([EUR-01],[EUR-02])
IC500,IC502
APC
CTRL PCON
PROTECT
Q5
D21 Q2 Q42
VCO RIPPLE
TX_VCO
SW FIL
Q3
VCO
RX VCO 8V
SW
Q6
D22
IC25,IC71,IC80 IC17 Q15,Q16
AF
PWM FET LINE
POWER
MOD DRIVER FILTER
AMP
IC16 IC75
TRIANGLE
+16
WAVE
REG
OSC
+B
Q11 J1
1
POWER
2
SW D12
REVERSE
EP1
CONNECT
PROTECT
IC5
10V REG
REG
RX LINE
TX LINE
COMMON LINE