Icom IC-A210 Service Manual page 89

(Amended page)
July 2019
IFI
8C
Q21
IF IF
IF
AM
AMP
AMP AMP
DET
Q24
Q25 Q26
D33 D35
AGC3
FIL1
DET
D29
5C
ANL
IC32 IC37, IC38
IC70
AM/FM
LPF
ANL SW
ANL
SW
8C
AM/FM
IC22
IC13
MIC1
ALC AF
E-VOL
MIC2 AMP AMP
IC2
I2DAT
I2CLK
8C 10C
IC3 D16, D17
MI1L
MI2L
VOX
AMP DET
HP
IC
10C
Q58~Q61
RL1, Q9, D18
SP
MM
MUTE
SP OUT
SW
CTRL
Q15
Q16
SP_CNTL AF
POWER
LPF
MOD V AMP
DATA, CLK
IC8
Q1~Q3 IC13 IC11, IC12, IC14
DS1~DS10
LED DATA
LED
DRIVE CLK
DRIVER
CTRL CTRL
CLK_IC12,DATA_IC11,CDC
3.3C
IC9
IC15
PHOTO
LIGHT
SENSOR
S2
RCL
S3 CPU
MEM
S4
DUAL
S5
IC1
EC
S6
SWAP
I2CLK
I2DATA
S1
A,B
2
A
3
B
1
COM
5 Q4 X1
A
6 16 MHz
B
4
CLK
COM
SHIFT
7 8
2
OEL CONTROL
1
R1
3
4
J1 J3
VR VR
5
MONI MONIS
6
7 3.3V 3.3C
PON PON
VOLUME-B UNIT
D1, D2
2nd_Lo
5C
RSSIL
2nd IF=450 kHz
NOISEL
FI5 IC43
IC45 D52
CERAMIC
RF
RF 2ndIF PROTE
SW BPF
SW IC CTION
IC39
FI6
X1
CERAMIC
FM
BPF
DET
IC90
10C
+8
3.3C
REG
IC9
I2DAT
Program
I2CLK
mable
OSC
CLK
IC26 IC7 IC8 IC8
IC14
MOD/AF
LPF BPF BUFF
SW
5C
8T1 8T2
IC67
IC6 8C
+8 SW
ICNTL
REG
IC76
AF
AMP
T4
IC89
IC4
IMP
HP
CONV AMP
10C
+9
REG
FI2
IC16
10C
EMIFIL
TRIANGLE
40C
WAVE
OSC
5C
IC71, IC80
IC17
D23 IC25 IC91
IC92
FET PWM
BUFF
DAC
DRIVER MOD
DATA
CLK
REG_C2 R8
Q3
3.3C
X2
38.400 MHz
IC10
TCXO
RS232 RXD
DRIVER TXD
IC4
VOLTAGE
10C
DET
IC3
RESET
RESET
5C
RSSI
NOISE
BPOUT
INCS
REML
MI1L
MI2L
PTT1_O
5C
3.3C
VR
C
IC7 IC6
DS11
+5
+3.3
REG
REG
OEL DISPLAY IC5
+3.3
16V
REG
FRONT-B UNIT
The underlined parts have been updated from the previous version of the addendum, or the original pages
1st IF=38.85 MHz
8C
1st MIX
D27 FI3 D19
Q20 IC68
IF RF XTAL RF
AMP SW BPF SW
R8
D28 FI4 D20
AGC2 Q45
RF XTAL RF
LO
SW BPF SW
AMP
AUX1
E-VOL
5C
D36
Q35
TX/RX
BUFF
118.0~136.975 MHz (Ch Spacing 25 kHz)
TXVCO=
118.0~136.992 MHz (Ch Spacing 8.33 kHz)
156.85~175.825 MHz (Ch Spacing 25 kHz)
RXVCO=
156.85~175.842MHz (Ch Spacing 8.33 kHz)
Q42
8C
RIPPLE
FIL
Q5
Q33
D54, D55
BUFF
TX_VCO
Q2
VCO
SW
LOOP
FIL
VCO1
Q6
D56, D57
RX VCO
Q3
VCO
SW
3.3C
5C
UL
Q0
Q38
VCO2
Q62
PLL
BUFF LPF
IC
IC47
DATA
CLK
Q32
2nd_Lo
D76
8T2 8C
8T2
SW
J1 J13
MI1L MI1L
SEND
REML REML
Q29
16V 16C
BPOUT BPOUT R8
R8
SW
MI2L MI2L
INCS INCS
RX
PTT1_O
PTT1_O
Q30
RSSI RSSIL
8T1
8T1
TXD_O TXD_O
SW
RXD_O RXD_O REG_C2
10C
NOISE NOISEL
TX
10C 10C
IC84
3.3C 5C
A, B, TXD, RXD A, B, TXD, RXD +3.3
DATA, CLK, PON DATA, CLK, PON REG
I2DATA, I2CLK I2DAT,I2CLK
5C
8-2g
MAIN-B UNIT
R8
D62~D73 D58~D69 D1~D3
IC69
Band
RF
Rejection
BPF BPF ATT
AMP
Filter
AGC1
IC54
+24
REG
IC52
TUNE1
AMP
Q48
AM/FM AM/FM
SW
J1 J500
MODV MOD
8T1
10C
Q41
Q500 Q501
TX_OUT J8 J501
PRE PRE PRE
AMP DRIVE DRIVE
SW
J2 J502
8T1 8T1
ULO 8T2
10C
IC501
10C 10C Q502, Q503
PCON PCON
SEND
SW
ID_ADJ
PROTECT
8T1
D74, D75
8C
IC81
8C
D53
AGC1 A, B
Q50
DET
AGC
AGC2
DET
BUFF
AGCOUT
Q55
AM/FM
AM/FM AGC3
SW
INCOM_I INCS
REM_I REML
10C
PTT1_I PTT1_O
3.3C
Q53, D82
5C ULO
UL
SW
ESD
PROTECT
BUFF
D4~D6
3.3C 3.3C
TX, RX, REG_C2
VCO1, VCO2, SEND
FIL1, FIL2 SP_CNTL,TUNE1
IC48 IC78
AM/FM, MM REFADJ,PCON
ICNTL, ANL DATA, CLK
Seri/
D/A
Para
CONV
DRIVER
IC94
BUFF
Q2
DATA, CLK
IC75 IC5
D50 D26 Q11
16C 40C
+16 +40 POWER
DC-DC DC-DC SW
Q67
SW
Q66
IC93
3.3C
40C
Surge
Stopper
IC31
IC44 IC42 D32
8C 10C
+5 +8 +10
REG REG DC-DC
PON
8C 10C
.
TX&RX=118.0~136.975 MHz(Ch Spacing 25 kHz)
TX&RX=118.0~136.992 MHz(Ch Spacing 8.33 kHz)
PA-B UNIT
J3
D502~D504
J504
ANT
LPF
SW
40C
8T1
Q504 D500, D501
PWR
PWR
AMP
DET
8T2
10C
ANT
IC500
D507
APC
AMP
PCON
J503
3.3C J6
Q0
IC49
Q2
LPF
BCD/Deci Q3
DECODER
J8
1
J9 J4
14
2
RXD_I
15
TXD_I
3
PTT
16
PTT1_I
INCOM
4
MIC1
INCOM_I 17
MIC2
5
MIC1
AUX IN
18
REM
MIC2 6
LIGHT
19
AUX1
AGC
7
HP
REM_I 20
SP
8
LIGHT
21
AGCOUT 9
22
RXD
HP
10
TXD
SP 23
11
24
D6
12
D7, D10
25
13
J10 J3
+B DC IN
D5
J7
RXD
TXD
VDD_ADJ
Q68, D77
ID_ADJ
SW
D-CONNECT UNIT
SEND
FI1
+B
EMIFIL
CONTROL LINE
Explanatory notes
RX LINE
TX LINE
COMMON LINE
DATA BUS LINE
Voltage Line (40V)
Voltage Line (16V)
Voltage Line (10V)
Voltage Line (8V)
Voltage Line (5V)
Voltage Line (3.3V)