Icom IC-F21S Two-Way Radio User Manual


 
R47 47
EP3
VCC
CBI0
CBI1
CBI2
CBI3
RLED
TLED
CBI0
C156
0.001
C157
0.001
C158
0.001
C159
0.001
W12W13
EP7
VOLIN
VOLOUT
C93
47 P
C94
47 P
F1
F2
C84
0.001
R51
47 k
D19
HVC362
C85
2.2
R50
56
REF
BAL
R52
1k
C92
0.1
D20
MA2S111
R232
150 k
OSCIN
OSCOUT
VP
VCC
DO
GND
LD
FINCLOCK
9
DATA
10
LE
11
FC
12
NC
13
FOUT
14
P
15
R
16
8
7
6
5
4
3
2
1
R244 22
SCK
UNLK
PLST
SO
LVIN
DEV
+5V
R5V
S5V
+5V
R5V
S5V
+5V
DEV
R5V
S5V
VOC
S5V
+5V
VOLIN
VOLOUT
AFOUT
C86
0.001
C150
4 P
C153
0.01
R96
1.2 k
R97
680 k
C152
10 P
C149
7 P
L28
0.22 H
C151
56 P
R100
22 k
R99
1.2 k
R43
47 k
R45
10 k
R49
47 k
D21
MA2S111
C80
47 P
R48
82 k
C83
100 P
C81
100 P
R46
1.2 k
X1
C252
100 P
C253 9 P
C77
0.047
C89
0.001
C90
6 P
R42
1 k
R53
47
C91
6 P
C87
47 P
L18
15 nH
C88
0.1
C144
0.001
C145
1
C146
0.001
C147
0.1
C148
3 P
R94
47
R221
100 k
C143
0.001
FI2
ALFYM450F=k
OI
R95
150
R98
47 k
L27
0.82 H
C154
220 P
C155
220 P
C78
0.001
R44
1 k
C82
0.1
C73
47 P
C138
0.001
C139
0.001
NOIS
RSSI
DET
R93
330
X2
CDBCA450CX24
C140
120 P
R92
1.8 k
C76
1
R40
6.8 k
R41
3.9 k
C3
7 P
C5
4 P
C6
0.001
R1
82 k
D1
1SV307
L1
14 nH
L2
14 nH
C8
47P
C9
0.001
C18
47 P
C20
0.001
R2
100
L3
0.82 H
T5V
C34
47 P
C35
47 P
R11
10
R13
220
L6
EXCCL3225U
W14
C45
47 P
R16
10 k
R19
100
R22
220
R24
100
C260
0.001
T5V
VCO5V
VCO5V
C56
1
R29
3.3 k
R32
3.3 k
L13
11 nH
C52
4 P
C53
4 P
C48
0.001
C54
6 P
2
3
R5V
S5V
RSSI
R5V
VCO5V
S5V
RSSI RSSI
C60
0.001
C61
47 P
C62
0.5 P
C66
1.5 P
C67
0.3 P
C72
0.001
R27
10 k
R37
100 k
R34
120 k
L16
11 nH
3
2
1
5
4
D6
MA368
C65
5 P
R33
220
R240
82 k
C68
3 P
C37
0.001
C38
5 P
C39
5 P
C40
470 P
C41
12 P
C42
12 P
C43
470 P
C44
3 P
C46
470 P
C47
47 P
C251
0.001
R17
100
R18
4.7 k
R20
47 k
R21
33
R23
68 k
R25
330
R26
68 k
D3
MA77
L10
27 nH
L11
27 nH
D4
MA77
S5V
C21
0.01
C26
0.001
C29
12 P
C30
0.001
C31
470 P
C36
10 P
R14
1 k
R15
56 k
R8
100
L9
15 nH
W2
L8
12 nH
C27
470 P
R10
4.7 k
R9
33 k
C33
10 P
C255
0.001
R12
12 k
C28
5 P
C7
0.001
C12
0.001
C15
0.001
C25
0.001
R3
15 k
R4
1 k
R5
10
L4
14 nH
MP5
L5
0.4-0.9-2TL
R6
3 3k
R7
4.7 k
D2
RB706F-40
L30
0.30-0.9-9TR
C23
20 P
C24
39 P
C13
12 P
C14
10 P
C17
36 P
R55
2.2 k
R56
10 k
R57
68 k
R239
100 k
R54
10 k
C96
0.1
T4
TXC
C97
0.1
R58
150 k
R60
100
R61
1 k
D9
MA77
L19
14 nH
1
3
4
5
2
C98
0.01
C99
9 P
L20
14 nH
C100
8 P
D10
MA77
R59
120 k
W8
EP8
C102
1.5 P
C103
47 P
C104
7 P
C109
0.001
C110
47 P
C113
8 P
R62
220 k
R63
10 k
D12
HVU350B
C107
0.001
C108
47 P
L22
10 nH
L21
10 nH
D13
HVU350 B
R65
220 k
R64
100 k
R229
1.8 k
R228
470 k
D18
MA2S111
R227
180 k
R66
10 k
R68
330
C249
0.1
C111
5 P
C105
3 P
C106
3 P
C112
0.001
C114
47 P
C118
47 P
C119
0.5 P
C121
47 P
C123
22 P
C124
0.001
C125
10 P
C126
5 P
R69
47
R70
220 k
R71
10 P
R72
220 k
R73
10 k
R75
10 k
R76
4.7 k
R77
1 k
R78
10 k
R80
12
D14
HVU350B
D15
L25
33 nH
C120
8 P
C117
8 P
R79
470
R81
470
L23
10 nH
L24
10 nH
C122
5 P
C116
6 P
C115
0.3 P
C127
47 P
C128
0.001
C130
0.01
C132
0.001
C133
5 P
C134
20 P
C136
0.001
R82
47 k
R83
100
R84
1k
R85
1
R87
2.7 k
R88
180
R89
1 k
R90
120 k
R91
470
R86
270
L26
1.0 H
C129
12 P
C137
100P
VCC
S5V
VCC
S5V
ANT
MIC MIC
C189
470 P
C190
0.1
R141
470
R142
100 k
C188
10
PTT
C182
0.047
C183
0.1
C184
180 P
C185
0.1
R136
10 k
R138
470
R139
100 k
R140
15 k
C186
0.0056
8
9
10
C187
0.022
R137
180 k
R134
4.7 k
VCC
S5V
+5V
C181
0.047
R127
10 k
7
R132
10 k
R126
1
C180
0.0022
R128
47 k
R129
10 k
C257
0.1
R133
12 k
R130
12 k
R131
5.6 k
R242
3.3 k
C177
2.2
C178
0.01
C179
1
R117
100 k
R122
10 k
R124
27 k
R125
1 M
C248 0.1
R120
39 k
R121
0.8 k
R116
33 k
R123
120 k
R118
220 k
R119
150 k
C176
0.0033
R111
18 k
R112
2.2 k
R110
3.3 k
14
13
12
R238
100 k
R114
10 k
R115
120 k
C174 180 P
R113
470
C173
0.1
C172
47
R109
68 k
D22
MA2S111
R105
2.7 k
R106
3.3 k
R107
1 k
NC
1
VCC
2
NC
3
VIN
4
RIPPLE
5
10
9
8
7
6
NF
PHASE
PREGND
PWGND
POUT
C170
0.1
C169
6.8
12
3
456
R104
10 k
C167
0.047
R243
1 k
C171
0.22
C168
0.22
C164
0.047
C165
47 P
R102
10
R103
33
C166
10
C163
100
AFOUT
R212
15k
VOLOUT
REMO
R143
100 k
R149
1 k
R241
1 k
VOLOUT
AFOUT
AFON
CPU5V
CPU5V
OSC1
TEMP
BATV
C191
0.1
R152
100 k
R153
100 k
R154
100 k
R151
NTCCM20124AG473JCT
C195
68 P
C201
47 P
C202
0.001
R157
12 k
L29 39 H
R160
10 k
VOLIN
VOLOUT
AFOUT
R165
470
SCK
SO
T1
T2
T3
T4
DAST
SCK
SO
T1
T2
T3
T4
DAST
SCK
SO
T1
T2
T3
T4
DAST
SQLIN
VCC
+5V
R169
10k
132
4
5
6
VOLIN
VOLIN
VOLOUT
VOLOUT
AFOUT
SQLIN
SQLIN
SQLIN
VCC
VCC
+5V
+5V
R5V
R5V
S5V
S5V
R5V
S5V
R5V
S5V
T5V
T5V
VCC
+5V
R5V
S5V
T5V
AFOUT
+5V
MIC
R171
10 k
R173
10 k
C213
0.001
MIC
OPT
MIC
C215
0.001
C237
0.001
R175
33 k
EP4
EP5
J4
C214
47 P
MC1
MIC
PTT
EXT.MIC
EXT.SP
BDET
C210
22
C211
0.01
C212
0.01
R172
4.7 k
R174
4.7 k
R210
120 k
R211
100 k
R217
47 k
R218
100 k
D17
RB706F-40
R213
470
R216
22 k
R245
100
S5V S5V
R5V
C207
10
C208
0.01
C209
0.1
R170
2.2 k
C205
0.1
R219
220 k
C259
0.01
C206
10
C203
0.01
C204
0.01
C235
820 P
R166
470 k
R167
470 k
R168
470 k
R203
56 k
R204
390 k
R205
180 k
R206
82 k
R207
39 k
R208
100 k
R209
100 k
C236
0.022
1
2
3
11
4
C196
470 P
C199
0.001
R159
12 k
R177
22 k
R180
47 k
R178
56 k
R179
180 k
D16
MA77
R163
1 k
R176
22 k
C200
0.027
R158
12 k
CENC0
CENC1
CENC2
CSFT
MMUT
RMUT
EP6
RES
RES
CPU5V
OSC2
R156
1 M
C198
0.1
1
2
3
15
R155
10
X3
C193
22 P
C194
15 P
EXST
SO
SCK
PLST
DAST
EXST
PTT
TXC
RLED
TLED
AFON
ESDA
CLI
CLO
R145
100 k
R146
100 k
R199
47 k
BEEP
SO
SCK
CBI3
CBI2
CENC2
CENC1
CENC0
SENC3
SENC2
CBI1
CBI0
SENC1
SENC0
R201
1 k
C216
0.01
R202
100 k
C247
0.1
R200
1 k
R161 10 k
DUSE
C218
0.0082
C219
0.1
C220
820 P
R181
47 k
R182
47 k
R185
27 k
R187
470
R164
1 k
R184
47 k
C222 0.047
R186 150 k
T5C
S5C
R5C
NWC
R5V
C224
0.033
C226
0.1
C229
0.0068
C230
0.01
C233
0.1
C234
820P
R188
470 k
R189
100 k
R190
47k
R191
47k
R192
18 k
R193
220 k
R194
68 k
R195
120 k
R197
22 k
5
4
3
2
1
3
2
1 5
4
C227
0.01
C228
0.1
R196
22 k
C232
0.0012
3
2
1
4
8
5
6
7
C225
4.7
C231
0.039
R198
22 k
R224
68 k
R225
68 k
R226
68 k
C243
0.0056
C245
0.0082
3
2
1
4
8
C244
180 P
C246
68 P
C223
47 P
R214
1 k
R222
68 k
R223
68 k
C242
0.0027
C258
47 P
R215
22 k
AFOUT
SP
CLONE
C239
0.001
C240
47 P
J5
VCC
+5V
+5V +5V
S5V
C238
0.001
4
5
61
R74
220 k
SP
C197
22
C58
10
C59
47 P
LV
C57
47 P
D5
HVU350B
L14
4.7 H
C55
7 P
VCC
T5V
S5V
R220
2.2 k
C74
0.001
R39
100 k
D7
HVU350 B
L17
4.7 H
R38
22 k
C69
7 P
C75
0.1
W4
C49
0.5 P
C50
7 P
C51
8 P
R28
2.7 k
R30
330
R31
3.3 k
C71
1
C63
5 P
C64
10 P
L15
0.68 H
C70
0.001
R35
100k
R36
18k
C175 0.0056
T5C
CLI
CLO
R5C
BDET
SENC3
SENC2
TONE
DET
SDEC
CDEC
SENC1
S5C
SENC0
5
6
7
STR
D
CLK
OE
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
QS
9
QS
10
8
16
A0
1
A1
2
A2
3
VSS
4
SDA
5
SCL
6
WP
7
VCC
8
NC
1
OSC2
10
NC
16
NC
NC
P52/WKP2
P53/WKP3
P54/WKP4
P55/WKP5/ADTRG
P10/TMOW
P11
P12
P56/SDA
P57/SCL
P74/TMRIV
P75/TMCIV
P76/TMOV
NC
NC
NC
NC
PB0/AN0
PB1/AN1
PB2/AN2
PB3/AN3
PB7/AN7
PB6/AN6
PB5/AN5
PB4/AN4
P17/RQ3
P16/RQ2
P15/RQ1
P14/RQ0
NC
NC
P51/WKP1
14
NC
15
NC
2
AVCC
3
X2
4
X1
X1
5
VCL
VCL
6
RES
7
TEST
TEST
8
VSS
VSS
9
OSC1
OSC2
OSC1
11
VCC
VCC
12
P50/WKP0
13
17
26
32
30
31
18
19
20
21
22
23
24
25
27
28
29
63
64
54
50
49
62
61
60
59
58
57
56
55
53
52
51
48
39
33
35
34
47
46
45
44
43
42
41
40
38
37
36
NC
NC
NC
NMI
P80/FTCI
P81/FTIOA
P82/FTIOB
P83/FTIOC
P84/FTIOD
P85
P86
P87
P20/SCK3
P21/RXD
P22/TXD
NC
C192
0.1
BDET
LVIN
RSSI
SDEC
CDES
UNLK
NOSE
F2
F1
VCC
T5V
S5V
+5V
+5V +5V
+5V
VCC
EP2
NWC
MMUT
R5C
RMUT
TONE
BEEP
T4
T3
T2
I/O
1
O/I
2
O/I
3
I/O
4
CONT.B
5
CONT.C
6
VEE
7
14
13
12
11
10
9
8
I/O
O/I
O/I
I/O
CONT.D
CONT.A
VDD
CTRL
GND
VB
VIN
VOUT
REF
REF
S5V
PUSE
BAL
BAL
DEV
DEV
+5V
DET
DET
SQLIN
VCC VCC
T5V
S5V
S1
S2
1
2
3
4
J1
[F21]only
From
SW-A UNIT
From/to
SW-A and SW-B
UNITS
1
2
3
4
5
6
7
J2
C161
0.001
C162
470 P
C160
47
SPEAKER
W1
CHASSIS UNIT
OPC-963
1
2
SP1
1
2
J3
S1
9
10
11
12
13
14
15
16
8
7
6
5
4
3
2
1
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN AFOUT
QUAD
IFOUT
RSSI
N-DET
N-REC
GND
MIXIN
C142
0.001
VIN1
1
VOUT1
2
VOUT2
3
VIN2
4
VDD
5
LD
6
CLK
7
DI
8
VIN3
9
VOUT3
10
VOUT4
11
VIN4
12
24
23
22
21
20
19
18
17
16
15
14
13
VIN5
VOUT5
VOUT6
VIN6
DO
VDAREF
RESET
GND
VIN7
VOUT7
VOUT8
VIN8
6
5
ESDA
SCK
R234
100 k
R233
100 k
Q11
2SC5085 Y
Q10
2SC5085 Y
Q8
DTC144EU
Q9 XP1214
Q16
3SK272
Q17
2SC4215 O
IC6 BU4066BCFV
IC5B NJM13403V
Q21 DTC144EU
IC9 M62363FP-650C
IC10
NJM2870
Q26
2SA1577 Q
Q27
2SA1577 Q
Q18
2SC4116 GR
IC1 MB15A02PFV-1
Q31
2SC4215 O
IC3 TA31136FN
Q13
2SK880 Y
Q12 XP6501 AB
Q5
2SC5107 O
Q6
2SC5107 O
Q7
2SC5107 O
Q4
2SC5107 O
Q15 3SK293
IC5D
NJM13403V
Q2
2SK2973
Q3
2SC3585 R44
Q1
2SK2974
Q33
2SK1829
Q19
2SB1132 R
Q20
XP6501 AB
Q14
DTA144EV
IC2
TA75S01F
IC4 TA7368F
IC7
HD6433664A24FP
IC15
BU4094BCFV
IC11
HN58X2416TI
Q28 DTC144EV
IC8 S-80942ANMP-D6
IC5A
NJM13403V
Q29
2SC4116 GR
IC13
TC7S66FU
Q30 XP1213
IC12B
NJM12904V
IC12A
NJM12904V
IC16B NJM12904V
Q24 2SB1132 R
Q25
XP6501 AB
Q23
DTA144 EU
IC16A
NJM12904V
Q32
DTC144TU
Q22 UN911H
IC5C NJM13403V
T1
OUT
1
VDD
2
VSS
3
NC
4
CD
5
1LO
4
5
6
7
14
13
12
11
FI1
FL-313
4.9 V
4.8 V
15.3 MHz
0.75 V P-P
4.7 V
0 V
UNLOCK 0.5 V
LOCK 4.5 V
2.9 V
0 V
PTT ON 4.8V
PTT OFF 0V
WIDE 4.8 V
NAR 0 V
2.1 V
0 V
1.8 V
4.1 V
3.7 V
3.3 V
3.5 V
1.7 V
0 V
1.0 V
0 V
2.0 V
0 V
0 V
3.7 V
0 V
4.7 V
0 V
2.1 V
4.6 V
0 V
4.6 V
0 V
2.0 V
0 V
3.1 V
0 V
0.6 V
0 V
2.1 V
1.2 V
1.3 V
0 V
2.4 V
3.4 V
AF ON
7.5 V
AF ON
4.8 V
AF ON
4.9 V
4.4 V
1.6 V
1.1 V P-P
14.7456 MHz
4.5 V
DTCS
3.1 V P-P
CTCSS code transmitting
2.5 V
0.7 V
0 V
3 V P-P
5/2 tonecode
transmitting
4.8 V
4.9 V
0 V
0 V
4.9 V
2.1 V
3.5 V
0 V
4.5 V
0 V
4.9 V
1.8 V
0 V
SECTION 12 VOLTAGE DIAGRAM
12 - 1
12-1 MAIN UNIT