Icom IC-A110 - Block Diagram of IC-A110

IF AGC
RF AGC
TUNE
RSSI
TRC
SQLI
DC POWER SUPPLY
PSWC
CPU
RMUTE
R/T
TMUTE
LEDC1
LEDC2DS1
HLC7453-012400
FRONT UNIT
MAIN UNIT
+8V
TRC
RX
COMMON LINE
TX
DATA BUS LINE
FISW
EXTMIC
EPTT
+5V
PTTS
LCD
SP
HANG
MIC
PTT
+8V
CLONE I/O
AF OUT
TMUT
VCO
DC-DC CONVERTOR
TX:118.0~136.975MHz
RX:79.15~98.125MHz
2nd IF=450KHz
13.8V or 24.0V
CPU5V
BEEP
8V
VCC
TX & RX=118.0~136.975MHz
+5V
MOD
AF
MOD V
8V
+5V
1st MIX
AF MUTE
1st IF=38.85MHz
12.8MHz
2nd Lo:38.4MHz
1st Lo:79.15MHz~98.125MHz
T8
+5V
D5: MA111
D15: MA111
D62: SB07-03C
IC1
TX:118.0~136.975MHz
D66: SB07-03C
PSWC
SMUTE
D14: MA8036L
HD6433823A19D
D51~D52
1SV271 X2
D43: 1SS352
Q2
3SK184
Q51
MRF137
AMP
PWR
Q42
2SC4403
AMP
PRE
IC11:NJM2107F
SQL
CONT
R110
MIC
LEVEL ADJ
J7
EXT SP
LPF
[ ANT ]
D38
1SV271
RX
ATT
D6,D37
HVU350 X2
RF
BPF
D7,D8
HVU350 X2
RF
BPF
D29
1SV307
FIL
SW
D30
1SV307
FIL
SW
Q7
2SC4211
AM
DET
Q16
2SC4116
RIPPLE
FIL
LOOP
FIL
R59
TUNE
ADJ
R121
MOD ADJ
Q58
XP1113
VCO
R/T SW
Q4
XP4315
R/T
CONT
IC2
S-80942ANMP
RESET
IC3
TC7W04FU
I/O BUFF
Q2: 2SA1622
Q3: 2SC4211
I/O BUFF
IC29
BA08FP
+8V
REG
Q22: 2SC4211
Q23: 2SB1132
+5V
CURRENT
AMP
Q33
XP4315
R/T
CONT
IC4
25LC160T-I/SN
EEPROM
J6
ACC
1
2
3
4
5
6
7
SP
D27: MA111
Q52: 2SA1622
PTT
CONT
IC19
NJM2902V
LPF
IC22
TC4W53FU
MOD/AF
SW
D10,D11
MA77 X2
R/T
SW
IC5
BU4094BC
EXPAND
IC7
S-81350HG
+5V
REG
Q71: DTC144EE
Q70: DTB123EK
T8
SW
IC26
TA78L05F
+5
REG
D56
DE5SC6M
DC-DC
DET
D35: MA8330
Q82: 2SC4081
+8V
REG
D26
DE5SC6M
DC-DC
DET
LINE
FILTER
LINE
FILTER
Q92,Q93
2SK2414 X2
AF
POWER
AMP
Q87,Q88
2SK2414 X2
POWER
AMP
Q90
2SA1471
POWER
SW
IC45
NJM072BM
REF,V
OSC
LPF
D1~D3
UM9401F X3
ANT
SW
IC28
TC4S66F
AF MUTE
IC4: BA3308F
AMP
ALC
Q91
2SK2414
DC-DC
CONVERT
AMP
IC15
MC33063AD
DC-DC
CONVERT
CONTROL
IC46
MC33063AD
DC-DC
CONVERT
CONTROL
Q72: XP4315
Q53: DTB123EK
R8
SW
Q59: 2SC4226
RX VCO
D65: HVU350
Q89
XP1501AB
POWER
SW CTRL
D44: MA8051
IC40: TA31136FN
2nd IF
IC
IC18
TC4W53FU
W28
W/N
SW
FI3
CFWM450D
CERAMIC
BPF
T1
ST-82P
IMPE-
CONVERT
DANCE
IC31
TA75S01F
LPF
IC13
TC9260F
E-VOL
Q77
2SD1819A
AMP
AGC
Q78
2SD1819A
AMP
AGC
FI1
FL-306
XTAL
BPF
Q74: 2SB798
Q75: 2SC4081
S MUTE
Q86: XP4315
Q98
2SA1586
PWR
CNT
D4,D5
RB706F X2
PWR
DET
IC50
TA75S01F
APC
CNT
D57: SB07-03C
IC47: HIP4081A
FET
DRIVER
D55: SB07-03C
IC43: HIP4081A
FET
DRIVER
X1
TCXO
(12.8MHz)
Q99
2SC4116
T MUTE
AMP
Q79
2SK880
TUNE
BUFF
Q83,Q84
2SC4215 X2
TRIPLER
AMP
X1
PBRC3.68AR
(3.68MHz)
Q96: DTC144EU
Q97: DTC144EU
SP OUT
CONT
IC48
TC4W53FU
MOD/AF
SW
Q94
FW215
SP OUT
SW
IC30
TC4S66F
S MUTE
SW
IC16
TC4W53FU
IN/EXT
MIC SW
D53.D54: MA2S111
Q73: 2SC4081
BUFF
Q69
DTB123EK
BUFF
Q1
3SK184
AMP
RF
S1
DIAL
VCC
+5V
R8
T8
IC37
TDA7233D
AMP
AF
IC42
TA75S01F
AMP
AF
D50: 1SV271
Q3: 2SC4215
AMP
IF
Q4~Q5
2SC4215 X2
AMP
IF
Q20
2SK3074
PRE
DRIVE
Q11
2SC4081
AMP
APC
Q15
CR-657
2SC4228
BUFF
Q14
2SC4403
BUFF
Q12
2SC4403
BUFF
Q43
2SC4226
BUFF
Q1: DTA143ZU
Q7: DTC114EU
BUFF
Q5: DTA143ZU
Q6: DTC114EU
BUFF
IC2
TB31207AFN
PLL IC
Q21
2SK3075
PRE
DRIVE
R336
EXT MIC
LEVEL ADJ
J2
MIC CONNECTOR
1
2
3
4
5
6
7
8
DS2~DS7
CL-170Y-CD X6
LCD
BACK LIGHT
D6
DA204U
PROTECT
Q6
2SC4215
AMP
IF
Q44: 2SC4226
TX VCO
D64: HVU350
IC47A
HIP4081A
FET
DRIVER
R150
POWER ADJ
IC51
TA75S01F
HPF
W1
+
-
1
2
Q101: DTC144EU
Q100: FW215
SP MUTE
IC41
TA8208H
AMP
PWR
S2
VUP
S3
VDN
S4
V/M
S5
SCAN
S6
PRI
S7
SQL
S8
POWER
TS
IC5
TA75S01F
AMP
AF
Q102
2SC4081
POWER
SW CTRL
D36
DSA3A1
PROTECT
IC6:TC4S66F
Q80:DTA144EU
R MUTE
Q81:DTC144EU
IC44
uPC311
MOD
PWM
FI4
[USA/-1] only
[USA/-1] only
CFG450H
CERAMIC
BPF
IC17
TC4W53FU
W/N
SW
D28
1SV307
FIL
SW
D31
1SV307
FIL
SW
FI2
FL-307
XTAL
BPF
Q68
XP4315
BUFF
W25
SECTION 9 BLOCK DIAGRAM
9 - 1