Icom IC-A210 Service Manual page 99

(Amended page)
July 2019
• MAIN-B UNIT 2/4 (for only IC-A220)
13.8 V
R473
1k
R480
47k
FI1
Q11
J10 BNX-002
STB35NF10T4
1 3
B
PSG
+B 2 4
1 CB CG
2
TO REAR
RX: 0 V
TX: 10.1 V
RL1
AHY107
SP
R425
10k
Q9
2SD2351
RX: 0.7 V
CP2
MoD
TX: 0 V
MOD V HK3-S-T
(TO PA) MPZ2012S300A L18 L19 L21
J1
EP1 7B12HA-680M 7B12HA-680M 7B12HA-680M
1
2
EP2
MPZ2012S300A
C60
0.47
IC17
HIP4081AIBZ
1 20
BHB BHO
2 19
BHI BHS
3 18
DIS BLO
4 17
VSS BLS
5 16
BLI VDD
6 15
ALI VCC
7 14
AHI ALS
8 13
HDEL ALO
9 12
LDEL AHS
10 11
AHB AHO
J9
RXD_I
1
TXD_I
2
3
PTT1_I
4
INCOM_I
5
6
7
HP
8
GND
9
MIC2
10
MIC1
11 R1
AUX1 RXD_I RXD_O
12
REM_I
13
1k
LIGHT
14
AGCOUT
15
R2
TXD_I TXD_O
1k
R3
INCOM_I INCS
1k
R4
REM_I REML
1k
AUX2
R5
PTT1_I PTT1_O
1k
C436
IC93
1 12
FB TMR 0.1
2 11
OUT ENOUT
3 10
SNS FLT
4 9
GATE GND
5 8 13.8 V
VCC UV
6 7
OV
SHDN
LT4363IMS R479
15k
IC89
1
CTRL
2
GND
IC5 3
NB
LM2587
NJM2370U1
40.0 V
C72 R76
1 3.3k
R32 R71
0 68k
D26
DF10SC6
40C
R269
Q67
Q15
DTC144EU
2SK3377
10
R270
Q16
2SK3377
10
FI2
ACF321825
R503
0
10.1 V
R511
CER8042
L24
270k
CER1065B
R484
IC31 LM5576MHX
C442 R514
1 20
82k
VCC BST
2 19
0.022
SD PRE 39
3 18
VIN SW
4 17
VIN SW
5 16
SYNC IS
6 15
COMP IS
7 14
FB PGND
8 13
RT PGND
9 12
RAMP OUT
10 11
AGND SS
The underlined parts have been updated from the previous version of the addendum, or the original pages
9.0 V
5
VIN
4
VOUT
IC16
NJM2137M
1 8
2 7
3 6
C111
4 5
330P
R91
R105
10k
15k
4.5 V
3.3C
16.0 V CP7
R354
IC75
BD9001F
150k
EN INV C343
5 4
RT FB
6 3
S1
GND NC 0.0047 L67
7 2 16V
VIN SW
8 1
7E05ED
NANOSMDC016F
Explanatory notes 8C
TX Line
RX Line
Voltage Line (40V)
Voltage Line (10V)
Voltage Line (8V)
Voltage Line (5V)
Voltage Line (3.3V) 8.1 V
10C
L26
IC42
BA08FP
8C
I O
G
L25
47U
IC44
BA05FP
5C
I O
G
9-10g
4.0 V
R329
IC80
10k
1 5
2
3 4
IC25
R289
1 8 TC4S66F
100k
2 7
3 6
4 5
NJM2137M
IC71
R291
1 5
2
100k
3 4
TC4S66F
C131
4.2 V
1
5C
3.3C
DATA
CLK
TX
RX
SEND
VCO1
VCO2
Q3
R8
IC49
CP14
1
4
2
Q2
2
Q0 3
0
4
7
5
9
6
5
7
6
8
VSS
RX: 8.1 V
RX: 0 V CD4028BNSR
RX: 0 V
TX: 0 V
TX: 8.0 V TX: 8.0 V
ID_ADJ
ULO
8T1
8T2
PCON
L1SS400
10C
CP6 D74
Q64
DTC144EU
LIGHT
CP4
IC84
16C
1 5
VIN VOUT PON
2
VSS BPOUT
3 4
CE NC MI1L
XC6221A332MR
REML
3.3 V
B
A
DATA
CLK
5.1 V I2CLK
I2DAT
PTT1_O
NOISEL
LVC
.
ID_ADJ
ID_ADJ
8T1
8T1
8T2
8T2
VCO1
VCO1
VCO2
VCO2
Q0
Q0
Q2
Q2
Q3
Q3
PCON
PCON
VDD_ADJ
VDD_ADJ
SP_CNTL
SP_CNTL
ULO
ULO
AM_DEP
AM_DEP
CLK
CLK
DATA
DATA
SEND
SEND
LVC
LVC
MAIN-B 1/4
40C
10C
8C
5C
3.3C
IC48
1 20
VSS VDD
2 19
NC OE
3 18
DATA SO
4 17 REG_C2
CLOCK Q11
5 16 ANL
LCK Q10
6 15 ICNTL
Q0 Q9
7 14 MM
Q1 Q8
8 13 FIL2
Q2 Q7
9 12 FIL1
Q3 Q6
10 11 AM/FM
Q4 Q5
BU2099FV
16
VDD
15
3
14
1
13 B
B
12
C
11
D
10 A
A
9
8
J2
R500
0 1
2
3 TO PA-UNIT
4
R483
5
10k
6
MAIN-B 4/4
FIL1
FIL1
FIL2
FIL2
RSSIL
R493 NOISEL
NOISEL
AGCOUT
AGCOUT
2.2k
R8
R8
AM/FM
AM/FM
CLK
TO FRONT-UNIT CLK
DATA
DATA
8T1
8T1
8T2
8T2
AM/FM
AM/FM
ANL
J13 ANL
ICNTL
ICNTL
1 2 MM
MM
3 4 MI1L
MI1L
5 6 MI2L
MI2L
7 8 AUX1
TXD_O AUX1
9 10
AUX2
RXD_O AUX2
11 12
BPOUT
MI2L BPOUT
13 14
HP
INCS HP
15 16
MIC1
MIC1
17 18
MIC2
MIC2
19 20
GND
GND
I2CLK
I2CLK
I2DAT
I2DAT
MAIN-B 3/4