Icom IC-F5121D Service Manual page 37

• MAIN UNIT (2/3)
C1019
J1002 470
J 1001
2
1
13.6V
VCC VCC
BATV
2.2V
Q1003
13.6V
2SJ506S-E
HV
W2
OPC-1195C
EP1001
EP1002
CP30
PWON PWON
Q1001
R1012
LDTC114YE 4.7K
Power ON 2.8V
Power OFF 0.0V
IC1001
XC6408EN22PR-G
5 1
VI N VROUT
2
VSS
4 3
VDOUT CD/VSEN
C1011
0.1
PGIO4 R1005 R1006 R1018
R1016
1K 100K 100K
K
100K
D1003 D1004 D1005
I
DA221 DA221 DA221
EAF O
S1001
MINISMDC050F
VCC
J1003
VCC
1
Ext.I/O 6(IGSW)
2
Ext.I/O 11(HORN)
3
GND
4
Ext.I/O 7 (AFO)
5
GND
6
DISC
7
GND
8
IN
9
GND
10
Ext.I/O 14(EPTT)
11
Ext.I/O 4 (SERIAL)
12
Ext.I/O 10(SERIAL)
13
1.9V
R1032
10K
Q1008
R1023 D1007
DTC363EK
L1SS400
10K
Q1012
LDTC114YE
R1008
0
H:AFON L:MUTE
C1034
IC1009 1
5
LA4425A 1
4
C1050 R1034
2
1
4.7K
AF AMP
3
Q1011
2SD1664
8V
R1105 I C1002 TX 0.0V
8.0V
15 RX 7.9V
8V
I O
R1104
G Q1013
15
2SA1577
Q1016
R1036
LDTC114YE
4.7K
Q1014
2SB1132
Q1015
XP6501
3.3V
R1015
1K
Q1005
LDTC114YE
R1038
1K
Q1004
LDTC114YE
R1027
C1043
0
0.1
C1046 R1028
Q1007
1 47
LDTC114YE
R1029
1K Q1010
R1044
LDTC114YE
100K
11 - 3
R1046
AF PRE AMP
2.2K
C1070
220P
R1055
100K
C1081 C1082
R1057
I C1004
0.1 0.1
5 150K
TA75S01F 3
4
1
2
TX 8.1V
RX 0.0V
T8V
8.0V
Q1021
Q1018
LDTC114YE
LDTC114YE
TXC
8V
R8V
RXC
5.0V
+5V +5V
+3.3V
L:Digita l
H:Analog
+5V
Q1019
XP6501
L1001
MLF1608A
R1111
47K
R1074
150K
3.3V
R1077
10K
VREF RSTN
R1078
13 6
VIN2 VIN1
100K
SQIN 14 5
VOUT2 VOUT1
C1107
T1 15 4
VOUT3 I C1006 VOUT0
+5V 16 3 220P
VIN3 VIN0
17 2 9
VIN4 VIN7
18 1 8
10
IC1007
R1080
T2 120K
FRE F
LVA
IC1007
6
7
5
SPLATTER
R1093
100K
ALC
(Digital only)
R1071
I C1005 C1109
100K
1 14 1
GAIN1 IN
C1096 2 13
GAIN2 GAINSW
R1081
1 3 12
DET INT
4 11 18K
OUT SENSE
5 10 C1110
BUFFI N VREF
6 9 1
300Hz HPF
BUFFGAIN V+
7 8
BUFFOUT GND
C1140
0.033
6dB/oct
C1084
180P
fc=6kHz LPF
Limitter
IC1007 R1106
R1107
2
C1145
5.6K 3.9K
1
0.0082
3
C1137
R1102 A nalog
0.018
10K
Digita l
Q1020
LDTC114YE
GND
J1004
D SCK
1 2
DPDN DAST
3 4
TMUT AFON
5 6
NOIS DMOSI
7 8
RXC DSS
9 1 0
TXC AD S
11 12
UNLK NW
13 14
PLST PGIO3(TXD0)
15 16
DRES SC K
17 18
PLSW DMISO
19 20
HORN SSO
21 22
R SSI
23 24
LVIN C IGSW
25 26
TEMP MI C
27 28
BATV EPTT
29 30
DSIRQ PGIO4
31 32
PGIO2(RXD0) PWON
33 34
CRES BEEP
35 36
CPU3.3V 8V
37 38
AF O GND
39 40
265mVrms
*: Refer to the PARTS LIST for the value and name of component.
HV
HV
R1076
100K
T8V
T8V
R1086
560K
R8V
R8V
8V
IC1007
8V
NJM13403V
13 +5V
+5V
14 VCON
12 +3.3V
+ 3.3 V
R1087
C1128
15K 0.1
DAFO NW C
NWC
C1129
ADS
0.1
AD S
R1088
BEEP
1M
T1
T1
R1089 VREF T2
T2
10K
TMUT
TMUT
R1090 RXC
RX C
180K
SIG MOD
MOD
R1092 R1096 F
F
1.8K 150K
DM O SQIN
SQIN
SCK
SCK
SSO
SSO
VREF LVA
LVA
5.0V
+5V
PLST
PLST
PLSW
PLSW
DET
DET
VREF UNLK
UNLK
LVIN
LVIN
R SSI
RSSI
NOIS
NOIS
DISC
D ISC
+5V
DI F
DIF
+3.3V VCON
VCON
V+4 DRES
DRES
IC1007
GND VREF
VREF
11
DMOSI
DMOSI
DSCK
DSCK
IC1008
TC7W53FK
DSS
DSS
8 1
VCC COM
7 2 DMISO
DMISO
CH0 IN H
6 3
CH1 VE E
5 4
A GND
DSIRQ
DSIRQ
DMI
DM I
DM O
DM O
C1133 DAF O
DAFO
0.01
DI F
R1116 DIF
2.7K
DPDN
DPDN
R1098
ERTJ0EP473J