Icom IC-F6012 Service Manual page 40

• MAIN-A/MAIN-B UNIT (1/2)
C256
470
J4
2
1
J7
13.2V
VCC
3.3V
BATV
13.2V Q23
2SJ506S-E
HV VCC
W2
OPC-1195C
EP4
CP30
HF70BB9.5X10.4X4.9
EP5 Q24
HF70BB9.5X10.4X4.9 LDTC144EE
R201
4.7K
IC10 Power ON 4.8V
NJM2831F05
Power OFF 0.0V
1 5
CTRL VIN
2
GND
3 4
NC VOUT
PGIO4
R359 R360 R361
K 100K 100K
100K
R358
1K
D61 D59
D60
I
EAFO DA221 DA221
DA221
S1
MINISMDC050F
VCC
J6
VCC
1
DIM/IGSW
2
HORN
3
GND
4
AFO
5
GND
6
DISC
7
GND
8
IN
9
GND
10
(EPTT) PGIO1
11
(MCH0) PGIO2 XRXD
12
(MCH1) PGIO3 XTXD
13
5V
OPV1
EXST (OPV2) R373 20 21
DAST (OPV3) 47K 19 22
R372 18 23
OPT3 47K 17 24
OPT2 16 25
OPT1 15 26
SIGO 14 27
BUSY 13 28
12 29
MCIN 11 30
10 31
9 32
8 33
R271
7 34
100
6 35
MCOT 5 36
4 37
C
3 38
2 39
1 40
J1
5V
R287
8V
Q35 10K
R197
DTC363EK
10K
D29
L1SS400
Q36
LDTC144EE
R355
0
H:AFON L:MUTE
IC8
LA4425A C253 C251 R195
5
1 0.022 1K
1
4
2
AF AMP
TX 8.2V
3
RX 0V
Q25
2SD1664
T8V
8V
Q29
DRC9114T0L
RXC
TX 0V
RX 8.0V
Q26
R8V
2SA1577
IC9
NJM7808DL1A 8.1V
Q30
R204
8V LDTC144EE
I O 4.7K
RXC
G
5.0V
Q27
2SB1132
5V
*Q28
R156
4.7K
5.0V
Q33 Q37
LDTC144EE LDTC144EE
Q31
2SJ144
C288
R225
C295
0.1 0
1
C289 R224
1 47
R223
D26 R226
1K
L1SS400 100K
4.3V
CPU5V
SCK
SI
SO
CIRQ
CCS
REM
CP28
AFOUT
DISC
RMUT
C247
R313 BEEP
1M 0.1 AFONO
MMUT E
8.1V
5.0V
C280
R232
470K 0.01
C249
0.0022
R193
470K
R304 C245 C379
5 10K 0.01 0.015
3
4
8.1V
1
IC15
TA75S01F 2
AF PRE AMP
RX 5-TONE SIGNAL
FILTER
C316
820P
TX 0V
RX 4.4V
2
C315
R243 R242
SDEC 1
0.022
39K
EP9 82K
3
MMZ1005Y102CT
IC16
5V 5V
4
V+
GND
IC16
R252 11
NJM12902V
100K
C321
3 4 0.1
R247
2 5 22K
R249 R248
22K 22K
1 6
Q39
R256 CTCSS/DTCS FILTER
CDEC
10K
C461
47P
C462
47P
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
CPU5 8V
4 3
L10 AFO GND
2 1
MLF1608A
CPU5
135mVrms
5.0V
RX AF HPF
R117 R116
120K 12K
C169
IC14
0.047
CD4066BPWR IC16
1 14
12
I /O1 VDD
2 13 14
O/I1 CONT1
3 12 13
CONT4
O/I2
4 11
I /O2 I/O4
5 10 R120
CONT2 O/I4
6 9 10K
CONT3 O/I3
7 8
VSS I/O3
VREF
MIC AMP
R129
IC16
100
7
C184
R183
150P
220K
R127
390K
R391
560K
C172
R133 0.01
100K
C173
R134
0.1
39K
R184
IC16
33K C174
9 R135
10
8
270K
10
SPLATTER
FILTER
VREF
R188
D/A
C359
560
1
18
VIN4
17
VIN3
16
VOUT3
15
VOUT2
14
VIN2
13
VREF
C186
0.1
5V
AFON
AFONO
EXST
SO
SCK
RXC
NWC
RMUT RMUTO
R139
100K
RMUTC
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
C168 C167 R330
R285
REF
0.056 4.7K B
0.047 100 REF
DISC
BAL
BAL
NW C
NW C
5.0V
T1
T1
5V T2
T2
TMUT
TMUT
TXC
TXC
VREF RXC
RXC
MOD
MOD
F
F
SQIN
SQIN
SCK
SCK
C182 C181
SO
0.1 SO
0.01
5 TLVA
TLVA
6 RLVA
RLVA
PLST
PLST
UNLK
UNLK
TEMP
TEMP
R384 LVIN
LVIN
1.8M
TONE RSSI
RSSI
NOIS
NOIS
SIG
DISC
C492 DISC
RXC
1
Q44 SQL
SQL
LDTC144EE
1
VIN7
2
VIN0
3
IC18 VOUT0
4 VRAF
VOUT1
AK2330
5
VIN1
6 5V
RSTN
R368
0
5.0V
C187
0.1
5V
TX 5.0V
RX 0V
R138
100K
MMUT
TX 0V
RX 4.7V
IC17
MMUT E
CD4094BPWR
1 16
STR V+
2 15
EXOE
D OE
3 14
CLK Q5
4 13
R381 TMUT
Q6
Q1
5 12
0 HORNO
Q2 Q7
6 11
BUSY
Q3 Q8
7 10
Q4 Q'S
8 9
GND QS
TX 0V
RX 5.0V
R345
0
IC20
M62334FP
8 1 T1
VCC AO1
7 2 T2
SCL AO2
6 3 TLVA
SDA AO3
5 4 RLVA
GND AO4
C464
47P