Icom IC-F6021 Service Manual page 35

MAIN-A UNIT (1/2)
0
R355
R382
0
IC8
LA4425A
470
J4 C256
4
AF AMP
R383
0
2
1
J7
VCC
BATV
2SJ506S
Q23
HV VCC
HF70BB9.5X10.4X4.9
W2 HW-1-S
EP4
EP5
HW-1-S
CP30
Q24
DTC144EU
R201
HF70BB9.5X10.4X4.9
4.7k
IC10
1 5
CTRL VIN
2
GND
3 4
NC VOUT
NJM2831F05
PGIO4
CF20
R358 K R359 R360 R361
1k CF20 100k 100k 100k
I
EAFO D61 D60 D59
MINISMDC050 F
VCC DA221 DA221 DA221
S1
DTC144EU
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 47k 20 21
DAST (OPV3) 19 22
R372 47k 18 23
OPT3 17 24
OPT2 16 25
OPT1 15 26
SIGO 14 27
BUSY 13 28
12 29
MCIN 11 30
10 31
9 32 R313
8 33 1M
7 34
R271
6 35
MCOT 5 36
100 CF20
4 37
C
3 38
2 39
1 40
J1
5V
R287
8V
Q35
10k
DTC363EK
Q36
D29
R197 10k
MA2S1110G
H:AFON L:MUTE
D TC144EU
5
C253 C251 R195
1
1 0.01 1k
2
3
Q25
2SD1664
T8V
8V
Q29
RXC
UNR9215G0
Q26
R8V
IC9 2SA1577
NJM7808DL1A
Q30
8V
D TC144EU
I O R204
RXC
G
4.7k
2SB1132
Q27
5V
SDEC
Q28
R156
XP6501
4.7k
CPU5V
Q33 Q37
DTC144EU
CDEC
2SJ144
Q31
C295
C288
R225 0
1
0.1
C289
R224 47
1
R223 1k
D26 R226
100k
MA2S1110G
CPU5V
SCK
SI
SO
CIRQ
CCS
REM
CP28
CP06S AFOUT
DISC
RMUT
C247
BEEP
0.1
AFONO
MMUT E
R232
C280
470k
0.01
C249
0.0022
R193
470k
R304
5 C245 C379
IC15 3
4
10k
0.01 0.01
1
TA75S01F
2
AF PRE AMP
Q43
DTC114EU
RX 5-TONE SIGNAL FILTER
C316
820P
IC16
8
C
2
EP9
1 NJM12902V
R243 R242 C315
3 SPLATTER
MMZ1005Y102C T
IC16 82k 39k 0.022
FILTER
NJM12902V
5V 5V
4
IC16V+
NJM12902V GND
R252
11
100k
C321 0.1
3 4
R249 R248 R247
2 5
22k 22k 22k
1 6
Q39
XP4601
R256
CTCSS/DTCS FILTER
10k
47P
C461
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
L10 5V BEEP
6 5
CPU5 8V
4 3
AFO GND
1.8U
2 1
CPU5
RX AF HPF
R117 R116
120k 12k
NJM12902V
C169 C168
IC16
IC14 B
1 14
12
I /O1 VDD 0.047 0.047
2 13 14
O/I1 CONT1
3 12
13
O/I2 CONT4
4 11
I /O2
I/O4 R120
5 10
CONT2 O/I4
6 9
CONT3 O/I3 10k
7 8
VSS I/O3
CD4066BPWR
VREF
M IC AMP
NJM12902V
IC16
R129
5
7
100
6
R183
C184
220k
150P
R127
R391 390k
R384
560k
100k C172 1.8M
0.01
R133
R134 C173
39k 0.1
R184 R135 C174
9
10
33k 270k
10
VREF
D/A
R188 C359
560 1
18
VIN4 VIN7
17
VIN3 VIN0
16
VOUT3 IC18 VOUT0
15
VOUT2 AK2330 VOUT1
14
VIN2 VIN1
13
VREF RSTN
C186
C187
0.1
0.1
5V
AFON
AFONO
EXST
SO
SCK
RXC
NWC
RMUT RMUTO
R139
RMUTC
100k
12 - 2
HV
HV
T8V
T8V
R8V
R8V
8V
8V
5V
R370 5V
AFOUT
C
CPU5V
0 C PU5V
CF20
REF
R330 R285 B REF
C167
DISC
BAL
0.068 5.6k 100 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
SO
C182 C181 SO
TLVA
0.01
0.1 TLVA
RLVA
RLVA
PLST
PLST
UNLK
UNLK
TEMP
TEMP
LVIN
LVIN
TONE RSSI
RSSI
NOIS
NOIS
SIG
DISC
C492 Q44 DISC
RXC
1
D TC144EU
1
2
3
4 VRAF
5
0
6 5V
R368
5V
R138
MMUT
100k
MMUT E
IC17
1 16
STR V+
2 15
EXOE
D OE
3 14
CLK Q5
4 13
R381 TMUT
Q1 Q6
5 12
0 HORNO
Q2 Q7
6 11
BUSY
Q3 Q8
7 10
Q4 Q'S
8 9
GND QS
CD4094BPWR
R345
470
IC20
8 1 T1
VCC AO1
7 2 T2
SCL AO2
6 3 TLVA
SDA AO3
5 4 RLVA
C464 GND AO4
M62334FP
47P
*; Refer to "PARTS LIST."