Icom ic-f5021 Service Manual page 35

MAIN UNIT (1/2)
0
R355
R382
0
IC8
LA4425A
J4 C256 470
4
AF AMP
R383
0
2
1
J7
VCC
BATV
2SJ506S Q23
HF70BB9.5X10.4X4.9
HV VCC
CP30
W2
EP4
HW-1-S
EP5
HW-1-S
R201
Q24
DTC144EU 4.7K
IC10
1 5
CTRL VIN
2
GND
3 4
NC VOUT
NJM2831F05
PGIO4
R358 K R359 R360 R361
CF20
1k 100K 100K 100K
I
EAFO D61 D60 D59
CF20
DTC144EU
Q33
MINISMDC050 F
S1
VCC 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 47K 20 21
DAST (OPV3) 19 22
R372 47K 18 23
OPT3 17 24
OPT2 16 25
15 26
OPT1
14 27
SIGO
13 28
BUSY
12 29
MCIN 11 30
10 31
9 32 BEPO
8 33
7 34
R271
6 35
5 36
MCOT
100
CF20
4 37
C
3 38
2 39
1 40
J1
R287
5V
10K
8V
Q35 DTC363EK
D29
R197 10K
MA2S1110G
Q36
D TC144EU
H:AFON L:MUTE
5 C253 C251 R195
1
1 0.01 1k
2
3
2SD1664
Q25
T8V
8V
RXC
Q29
DTC114TU
Q26
R8V
IC9 2SA1577
NJM7808DL1A
8V D TC144EU
I O R204
Q30 RXC
G
4.7K
2SB1132
Q27 5V
SDEC
Q28
R156
XP6501
4.7K
CPU5V
Q37
DTC144EU
CDEC
2SJ144
Q31
C295
C288 R225
1
0.1 0
C289
R224 47
1
R223 1k
D26
R226 100K
MA2S1110G
CPU5V
SCK
SI
SO
CIRQ
CCS
REM
CP28
CP06S
AFOUT
DISC
R313 RMUT
C247 0.1 BEEP
1M
AFONO
MMUT E
8V
5V
R232
C280
470K
0.01
C249
1
0.0022 I/O1
2
R193 O/I1
3
O/I2
4
470K I/O2
5
CONT2
6
R304
5 C245 C379 CONT3
IC15 3 7
VSS
4
10K
0.01 0.01
1
CD4066BPWR
TA75S01F
2
AF PRE AMP
Q44
DTC114EU
C316
820P
IC16
9
8
10
2
1
R243 R242 C315
NJM12902V
3
SPLATTER
IC16 82K 39K 0.022
FILTER
NJM12902V
RX 5-TONE SIGNAL
FILTER
5V
4
IC16 V+
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
10K
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
L10 5V BEEP
6 5
CPU5 8V
4 3
AFO GND
1.8U
2 1
CPU5
RX AF HPF
R116
R117
180K 12K
NJM12902V
IC16 C169 C168 C167
IC14
14 12
VDD 0.047 0.047 0.068
13 14
CONT1
12 13
CONT4
11
I/O4 R120
10
O/I4
9
O/I3 10K
8
I/O3
VREF
NJM12902V
IC16
R129
5
7
100
6
R183
C184
180K
150P
R127
R391 330K
M IC AM P
R384
270K
2.2M
R133 C172
100K 0.01
R134 C173
33K 0.1
R184 R135 C174
33K 270K 10
VREF
D/A
R188 C359
560 1
18 1
VIN4 VIN7
17 2
VIN3 VIN0
16 3
VOUT3 VOUT0
IC18
15 4
VOUT2 AK2330 VOUT1
14 5
VIN2 VIN1
13 6
VREF RSTN
C186
C187
0.1
0.1
5V
AFON
AFONO IC17
1
EXST
STR
2
SO
D
SCK 3
CLK
RXC 4
Q1
5
Q2
NWC 6
Q3
RMUT RMUTO 7
Q4
8
GND
CD4094BPWR
R139
RMUTC
100K
R345
470
12 - 2
HV
HV
T8V
T8V
R8V
R8V
8V
8V
5V
5V
R370
AFOUT
CPU5V
CPU5V
0
CF20
REF
R330 R285 B REF
DISC
BAL
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
SO
C182 C181
TLVA
0.01 TLVA
0.1
RLVA
RLVA
PLST
PLST
UNLK
UNLK
TEMP
TEMP
LVIN
LVIN
TONE RSSI
RSSI
NOIS
NOIS
SIG
DISC
DISC
MCGO
VRAF
0
5V
R368
5V
R138
MMUT
100K
16
MMUT E
V+
15
EXOE
OE
14
Q5
13 R381 TMUT
Q6
12 HORNO
Q7
11 0 BUSY
Q8
10
Q'S
9
QS
IC20
8 1 T1
VCC AO1
7 2 T2
SCL AO2
6 3 TLVA
SDA AO3
5 4 RLVA
GND AO4
M62334FP
*; Refer to "PARTS LIST."