Icom IC-F5012 Service Manual page 34

• MAIN-A UNIT (1/2)
C256
J4 470
AF AMP
2
1
J7
13.6V
VCC
3.3V
BATV
13.6V
Q23
2SJ506S-E
HV EP4 VCC
W2
HF70BB9.5X10.4X4.9
OPC-1195C
CP30
EP5
HF70BB9.5X10.4X4.9
R201
4.7K
Q24
LDTC144EE
Power ON 4.9V
Power OFF 0V
IC10
NJM2831F05
1 5
CTRL VIN
2
GND
3 4
NC VOUT
PGIO4
R359
R361
K 100K
100K
R358 R360
1K 100K
I
EAFO
S1
MINISMDC050F
VCC D61 D60 D59
DA221 DA221 DA221
J6
VCC
1
Ext.I/O 6 (DIM/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
5V
OPV1
EXST (OPV2) R373 20 21
DAST (OPV3) 47K 19 22
R372 18 23
OPT3 47K 17 24
OPT2 16 25
15 26
OPT1
14 27
SIGO
BUSY 13 28
12 29
MCIN 11 30
10 31
9 32
8 33
7 34
R271 6 35
100 5 36
MCOT
4 37
C
3 38
2 39
1 40
J1
R287
10K
5V
Q35
8V
D29
DTC363EK
L1SS400
R197
10K
Q36
LDTC144EE
R355
0
H:AFON L:MUTE
IC8
5 C253
LA4425A 1 C251 R195
1
4 0.022 1K
2
TX 8.2V
3
RX 0V
Q25
2SD1664
T8V
8V
RXC
Q29
LDTC114YE
TX 0V
RX 8.1V
Q26 R8V
2SA1577
IC9
NJM7808DL1A
8.1V
8V
I O
R204
RXC
G
4.7K
Q30
LDTC144EE
Q27 5V
2SB1132
Q28
R156
4.7K
5.0V
Q33 Q37
LDTC144EE LDTC144EE
CDEC
Q31
2SJ144
C295
1
C288 R225
0.1 0
C289 R224
1 47
R223
1K R226
100K
D26
L1SS400
CPU5V
SCK
SI
SO
CIRQ
CCS
REM
CP28
AFOUT
DISC
R313 RMUT
BEPO 1M C247 BEEP
0.1 AFONO
MMUT E
8V
5V
R232 C280
470K
0.01
C249
0.0022
R193
470K
R304 C245 C379
5 10K 0.01 0.015
3
4
1
2
IC15
TA75S01F
AF PRE AMP
C316
820P
8
2
C315
SDEC 1
0.022
R242
3 R243
39K
82K SPLATTER
IC16
FILTER
RX 5-TONE SIGNAL
FILTER
5V
IC16
NJM12902V
4
V+
GND
R252
11
100K
C321
3 0.1
4
R249
R248
22K
2 5 22K
R247
22K
1 6
Q39
R256
10K CTCSS/DTCS
FILTER
J2
GND DIM
40 39
TONE DAST
38 37
TENC OPT3
36 35
NOIS OPT2
34 33
EXOE OPT1
32 31
EXST PTTO
30 29
UNLK PTTI
28 27
PLST PGIO3
26 25
CDEC SCK
24 23
SDEC SI
22 21
OPV1 SO
20 19
RSSI CIRQ
18 17
LVIN CCS
16 15
TEMP MIC
14 13
BATV EPTT
12 11
DSDA PGIO4
10 9
PGIO2 PWON
8 7
5V BEEP
6 5
L10 CPU5 8V
4 3
MLF1608A AFO GND
2 1
460mVrms
MIC input level :40 mVrms
CPU5
R117
RX AF HPF
120K
R116
12K
C169 C168
IC14
IC16 0.047 0.047
CD4066BPWR
1 14 12
I/O1 VDD
2 13 14
O/I1 CONT1
3 12 13
O/I2 CONT4
4 11
I/O2 I/O4
5 10
CONT2 O/I4
6 9
R120
CONT3 O/I3
7 8
VSS I/O3 10K
VREF
R129
IC16
100
5
7
6
R183
220K C184
150P
R127
390K
R391
MIC AMP
560K R384
1.8M
R133 C172
100K
0.01
C173
R134
0.1
47K
IC16
9 R135
C174
270K
10
R184
10
33K
VREF
D/A
R188
C359
560 1
18
VIN4
17
VIN3
16
VOUT3 IC18
15
VOUT2 AK2330
14
VIN2
13
VREF
C186
0.1 C187
0.1
5V
TX 0.9V
RX 4.7V
AFON
AFONO
1
EXST
SO 2
SCK 3
RXC 4 Q1
5
NWC 6
RMUT RMUTO 7
8
R139
TX
100K
RMUTC
RX 5.0V
R345
100
TX 0V
RX 5.0V
*: Refer to the PARTS LIST for the value and name of component.
11 - 2
HV
HV
T8V
T8V
R8V
R8V
8V
8V
5V
5V
R370 AFOUT
0 CPU5V
CPU5V
R330
C167 R285
REF
B
0.056 4.7K 100 REF
DISC
BAL
BAL
NW C
NW C
T1
T1
5V T2
T2
TMUT
TMUT
TXC
TXC
VREF RXC
RXC
MOD
MOD
F
F
SQIN
SQIN
SCK
SCK
C182 C181
SO
0.01 0.1 SO
TLVA
TLVA
RLVA
RLVA
PLST
PLST
UNLK
UNLK
TEMP
TEMP
LVIN
LVIN
TONE RSSI
RSSI
NOIS
NOIS
SIG
DISC
DISC
SQL
SQL
1
VIN7
2
VIN0
3 MCGO
VOUT0
4 VRAF
VOUT1
5
VIN1
6 5V
RSTN
R368
0
5V
TX 5.0V
RX 0V
R138
MMUT
100K
IC17
CD4094BPWR
16
MMUTE
STR V+
15 EXOE
D OE
14
CLK Q5
13 R381 TMUT
Q6
12 0 HORNO
Q2 Q7
11 BUSY
Q3 Q8
10
Q4 Q'S
9
GND QS
0V
IC20
M62334FP
8 1 T1
VCC AO1
7 2 T2
SCL AO2
6 3 TLVA
SDA AO3
5 4 RLVA
GND AO4