Icom IC-F21 Service Manual page 34

VCC
T5V
VCO5V
EP2
C48
0.001
Q10
2SC5085 Y
4.1 V
C45
C49
47 P
0.5 P
EP3
R24
C61 C60 1.8 V
3.7 V
100
47 P 0.001 0 V
85 Y
R30 C46 R25
R26
330 470 P 330
68 k
5 C62
5
0.5 P 1
68 H
Q8
R33 2
Q9 XP1214
DTC144EU
220
4 Q7
3
V
2SC5107 O
7 V
R27
10 k
C47
47 P
C251
0.001
R5V
S5V
RSSI
R83
0 V
100
4.5 V
C126
C130 C129
R84 L26
5 P
0.01 12 P
1k 1.0 H
C123
22 P
Q16
R85
3SK272
C132
0 V
1
0.001 1.0 V
R76
L25
R86 R82
4.7 k
C133 270 47 k 33 nH
5 P
C128
C127
0.001
47 P
VCC
S5V
+5V
IC6 BU4066BCFV
1 14
I/O VDD
2 13
O/I CONT.A
3 12
O/I CONT.D
4 11
I/O I/O
5 10
CONT.B O/I
6 9
CONT.C O/I
7 8 C179 R125
VEE I/O
1 1 M
R242
3.3 k
VOLIN
VOLOUT
AFOUT
IC9 M62363FP-650C
4.8 V
R165
C202
1 24 DET
70
VIN1 VIN8
0.001
T1 2 23 SQLIN
VOUT1 VOUT8
T2 3 22 DEV
VOUT2 VOUT7
4 21
VIN2 VIN7
5 20
VDD GND
DAST 6 19 +5V
LD RESET
SCK 7 18
CLK VDAREF
SO 8 17
DI DO
9 16
VIN3 VIN6
T3 10
15 BAL
VOUT3 VOUT6
T4 11 14 REF
VOUT4 VOUT5
12 13
VIN4 VIN5
C203
0.01
R204
390 k
S5V
R203
2 4
56 k EP6
1
3
IC5A 2.5 V
11 Q29
05
NJM13403V
2SC4116 GR
k
33
C232
R185
0.0012
27 k
R187
470
1
R184
R189
5
R188 47 k
100 k
4 3 470 k
IC13 C222 0.047
R192
TC7S66FU
18 k 2
6
7 0 V
R190 5
1.8 V
C224
47k
IC12B
0.033
NJM12904V
R191
CTCSS code transmitting
47k Q30 XP1213
25
3.1 V P-P
4 3
2
PUSE
5 1
VCO5V C260
0.001
R19
100
R22
3.3 V 3.5 V
220
C37
C40
L11 0.001
R23
470 P
27 nH L10
68 k R20
C43
27 nH
47 k
C41
470 P 1.3 V
12 P
C39 1.2 V D3
5 P MA77
C44
R21
3 P 33
C42
12 P
D4
Q6
Q5 MA77
2SC5107 O
R18
2SC5107 O
4.7 k
0 V
2.0 V
R5V
S5V
RSSI
R77 R69
1 k 47
C124
R80 C125 R78
R81 R79
12 10 P 10 k 0.001
470
470 C119
D14
0.5 P
HVU350B
D15
L23
L24
10 nH C120 10 nH
C117
8 P
R74 8 P
R72
220 k
220 k
C116
C122
6 P
5 P
R75 C118 R73
10 k C121 47 P 10 k
47 P
R118
220 k
R119
C176
0.0033 150 k R116
33 k
R123
R124
120 k
27 k
C177 R120
R122 2.2 39 k
C178 R121
10 k 0.8 k C175 0.0056
0.01
BEEP
C248 0.1
L29 39 H
C201
47 P
IC8 S-80942ANMP-D6 R160
10 k
5 OUT 1 C197
CD 22
2
VDD
4 3
NC
VSS
C196
C199
0.001 470 P
C200
R176
0.027
22 k
R177
22 k
CENC2
R178
56 k
CENC1
RMUT
4.9 V CENC0
MMUT
R179
180 k
R180
R182
47 k
47 k NWC
S5C
R181
C220 C218 R5C
820 P 47 k
0.0082 T5C
C219
0.1
Q28 DTC144EV
R186 150 k DUSE
DTCS
4.5 V
VCC
T5V
C34
47 P
R13 R11
220 10
R16 C35
10 k 47 P
3.7 V 4.7 V
0 V 0 V
R17 C30
100 R15
R12 0.001
R14 L8
56 k
L9
1 k 12 k
2.1 V 12 nH
15 nH C31
0 V
470 P
C29
12 P
C33 C28
C36
10 P
C38 10 P 5 P
Q4 Q3
5 P
2SC5107 O 2SC3585 R44
0 V
4.6 V
S5V
RSSI
C249
R66
0.1
Q33
10 k
L22
C111
2SK1829
5 P 10 nH
R229
C107
C112 0 V C108
1.8 k
4.6 V 47 P 0.001 R64
0.001
100 k
0 V C106
C115 C113 Q15 3SK293
0 V 3.1 V
3 P
0.3 P 8 P
2.0 V
R65 L21
220 k 10 nH
R70
D13
220 k
HVU350 B
C109 R68
C110
0.001 330
C114 47 P
R71 47 P
10 P
VCC
S5V S5V
R115
120 k
C174 180 P
AF ON
4.8 V
R113
13 470
R110
R111
14
3.3 k
12
18 k
IC5D
R117 NJM13403V
R114
100 k
C173
10 k R238
0.1
100 k
R112 C172
2.2 k 47
2.1 V
VOLOUT
AFOUT
R151
NTCCM20124AG473JCT
C191
R157
0.1
TEMP
12 k
R152
100 k
C195
68 P OSC1
X3
OSC2
D16
R158 14.7456 MHz
MA77 R155
12 k 1.1 V P-P
R156
10
R159
1 M
12 k
C194
C193
15 P
22 P
RES
C198
R163 0.1
16
1 k
4
1 EXST
Q1 STR
5 2
SO
Q2 D
6 3
SCK
Q3 CLK
7 15
Q4 OE
14
Q5
13
IC15
Q6
12
Q7 BU4094BCFV
11
Q8
9
QS
10
QS
R164
1 k
8
R161 10 k
CPU5V
8 A0 1
VCC
7 A1 2
WP
6 A2 3
SCL
5 VSS 4
SDA
R202 IC11
100 k C216
HN58X2416TI
0.01
VCC
L6
EXCCL3225U
VCO5V
W14
L30
C21 C20 C18 0.30-0.9-9TR
0.001
0.01 47 P
W2
L5
0.4-0.9-2TL
C24
C255
Q2 39 P
0.001
Q1
2SK2973
R5 2SK2974
R8
100 10
MP5
R10 C26
R7 C17
4.7 k 0.001 4.7 k
36 P
C14
R9 R6 C25 C23 2.4 V
10 P
33 k 0 V
3 3k 0.001 20 P
C27
470 P
EP8 W8
0 V
0.6 V
R228 R227
470 k
180 k
C98
D18
C102 L20 L19
0.01
MA2S111
1.5 P 14 nH 14 nH
D12
HVU350B
R60
R61
100
C105
C104 1 k
3 P
7 P R62
220 k
D10 C100 D9 C99
MA77 8 P MA77 9 P
R63 C103
10 k 47 P
VCC
Q19
AF ON
2SB1132 R 7.5 V
6 5 4
R104
10 k
R105
D22
R109 2.7 k
MA2S111 C167
68 k
1 2 3
0.047
Q20
XP6501 AB
C171 R107 C170 R106 C169 C168
0.22 1 k 0.1 3.3 k 6.8 0.22
VOLOUT
R153
100 k
BATV
4.9 V
CPU5V
C192
R154
0.1
100 k
1
NC
2
NC
CPU5V 3
AVCC
4
X2
X1 5
X1
VCL 6
VCL
RES 7
RES
IC7
TEST 8
TEST
VSS 9 HD6433664A24FP
VSS P84/FTIOD
OSC2 10
OSC2 P83/FTIOC
OSC1 11
OSC1 P82/FTIOB
VCC
12
VCC P81/FTIOA
13
P50/WKP0
14
P51/WKP1
15
NC
16
NC
R200
1 k
R233
R234 100 k
C247
100 k
0.1
T5V L1
L2
14 nH 14 nH
ANT
R2
C6
100
0.001
C9
C8 C5 C3 R1
L3
0.001 47P
0.82 H 4 P 7 P 82 k
D1
C12 L4 1SV307
14 nH
0.001
C7
0.001
R3
15 k
D2
C13
RB706F-40
12 P
C15
R4
0.001
1 k
S5V
Q14
C97
R55
DTA144EV
0.1 2.2 k
1.6 V
4.4 V
R58
R56
150 k
10 k
2 3
4
1
5
R54
R59 C96 R57
10 k
120 k 68 k
0.1
IC2
TA75S01F
R239
100 k
AF ON
IC4 TA7368F 3.4 V
1 10
NC POUT
2 9
VCC PWGND
3 8
NC PREGND
4 7
VIN PHASE
5 6
RIPPLE NF
R243 R102
1 k 10
R103
33
C163
100
C164
C166 C165
0.047
10 47 P
AFOUT
R149
1 k
R212
R241 R143
15k
1 k
100 k
REMO
48
NC
47
NC
46 CLO
P22/TXD
45 CLI
P21/RXD
44 ESDA
P20/SCK3
43 AFON
P87
42 TLED
P86
41 RLED
P85
40 TXC
39
38
37
PTT
36
P80/FTCI EXST
35
NMI DAST
34
NC PLST
33
NC
R146 R145
100 k
100 k
R199
R201
47 k
1 k