Icom IC-A210 Service Manual page 101

(Amended page)
July 2019
• MAIN-B UNIT 4/4 (for only IC-A220)
R390
0
R363
0
R374
0
R375
0
R376
4.0 V
0
RX IN
C2 C354 C355 C502 C3 D2
J3
0.001 82P 82P 0.001 0.001 BA595
D1 D3
L63 L64
C2012C C2012C
BA595 BA595
24.1 V
40C
8C
5C
R7
0
R416
0
R404
0 R403
R405
R420
AGC1 2.2k
10k
C392
0.1
R415
100
DET
Q55
DTC144EU
RX: 2.8 V
TX: 0 V
4
C20 L3 C31 R512
1 3
150
5P 5P
ERA-50SM+
2 IC69
L2
E526HNA
L4
E526HNA
RX: 4.4 V
TX: 0 V
BPV
R312
0
R341
100k
33.4 V
IC54
NJM78L24UA
R303 R51
O
I
1.2k
1.2k
G
R302
R304
1.2k 1.2k
R25
100k
C336
0.1
8C
AGC3
R414
0
IC81
NJM2902V
1 14
0 2 13
3 12
4 11
D53
R421
5 10
6 9
4.7k L1SS400
7 8
R411
27k
The underlined parts have been updated from the previous version of the addendum, or the original pages
R44
47
R59
18
IC68
1
GND
2
CP20
C38 L9 C57 R54 IF
3
RF
3P 1.2U 0
5P CF20
JMS-1+
L8
E526HNA
L10
E526HNA
AM Mode: 11.7 V
FM Mode: 0 V
R342
100k
Q48
DMC561040
4 3
TUNE
2
IC52
NJM2904V
5 1
R394 R305
33k
AM Mode: 0 V
R24
FM Mode: 1.3V
4.7k
R356
CP16
Q50
100k
2SC4116
AGC_oUT
R6
0
RSSI
R508
0
AGC2
D52
RB876W
C155 Q20
3SK263
18P
3.1 V
9-12g
R62
22
C64
33P
C68
R440
Q45
2SC5415A
150
0.001
A
6
LO
5
D19
GND
4 1
GND
3
1SV307
RX: 2.8 V
TX: 0 V
R61 C74
0 0.001
Wide Mode Narrow Mode
RX: 5.1 V
A 8.1 V D20
TX: 0 V 1
3
1SV307
RX: 5.1 V
8.1 V
B
TX: 0 V
RX: 5.1 V
C 8.1 V
TX: 0 V
RX: 5.1 V
D 8.1 V
TX: 0 V
E 4.0 V 0 V
F 4.1 V 0 V
G 0 V 4.0V
C
H 0 V 4.1 V
0
8C
5C
C169 R177
FM_DET_OUT
1 0
C179 R188
0.0047 5.6k
C193
120P
E
C194
120P
IC43
TC4W53FU
C202
1 8
2 7
0.01
3 6
R194
1k 4 5
2nd_Lo
7.7 V
Explanatory notes
TX Line
G
RX Line
Voltage Line (40V)
Voltage Line (8V)
Voltage Line (5V)
.
MAIN-B 2/4
FIL1
FIL1
FIL2
FIL2
RSSIL
RSSIL
NOISEL
NOISEL
AGCOUT
AGCOUT
R8
R8
AM/FM
AM/FM
R70 MAIN-B 1/4
1st_Lo
1STLO
0
2NDLO
TUNE1
B
FI3 TUNE1
FL-306
4
IN GND D27
2
GND
OUT
1SV307
FIL1
(20K)
FI4
FL-307
4
IN GND D28
2
GND OUT
1SV307
FIL2
(9K)
R8
D
FIL1
F
IC45
TC4W53FU
MAIN-B 3/4
*FI5 5 4
C289 C290 FMDET
6 3
I O IFI
7 2
0.01
0.01
IFO
8 1 AGC3
AGC3
DET
DET
*FI6
C291 C292
I O
0.01 0.01
R213
10k
H