Voltage diagram, Main unit, 1 main unit – Icom IC-F51 User Manual
Page 34
SECTION 11
VOLTAGE DIAGRAM
11 - 1
11-1 MAIN UNIT
C211
4.7
R104 220 k
R105 330 k
R94 150 k
C151 0.1
C200 47 P
C199 0.001
C201
1
C202
0.1
R116 680 k
R115 1.2 k
L35
0.22 H
C185
0.1
C167
0.1
R40 1.5 k
C67 0.001
C75 10
R38 100 k
R36 1.5 k
R48 680
R34 100 k
C60 0.01
R35 100
C59 0.001
C57 0.001
C52 12 P
C53 0.01
C54 0.001
L12
0.22 H
R27 470
R26 470
C35
1
C36 0.001
L9 56 nH
R17 47
C184 0.001
R18 4.7
R19 100 k
R12 10
C30 0.1
C31 0.1
R173 5.6 k
R175 220 k
D23
MA2S111
C23 0.1
R171 220 k
C28 3.5 P
C26 100 P
R13 100 k
C27
0.001
C24 0.001
D6 MA2S077
D7 MA2C728
D5
1SV307
C14 11 P
C73 0.001
T2
T1
C17 12 P
C16 22 P
MP5
L31
82 nH
C18 5 P
R11 100 k
C20
100 P
D8 HVC375B
L7
67 nH
L8
6.8 nH
C55 4 P
C50 0.001
C48 0.01
R25 1 k
C44 4 P
D10
HVC375B
C45 0.001
R23 150 k
C43
0.001
R21 220 k
C39
0.001
C38 3 P
R20 820
C32 0.001
R15 120 k
C33 47 P
R16 270
D9 HVC350B
C42
0.001
T2
L11 56 nH
R29 180
R32 100
C51 0.001
L13
0.82 H
R31 47
C56 22 P
C165 0.01
C162 56 P
C164 7 P
L33
0.82 H
C71 0.1
C70 100 P
R46 2.2 k
R42 47 k
C68 100 P
C66 0.001
RSSI
NOIS
C63 47 P
C65 0.001
3
2
1
4
5
C154 47 P
C152 47 P
C153 47 P
C155 270 P
C140
0.1
C213
0.1
R108 10 k
C157 10 P
C156 0.001
C158
0.1
C159 0.001
EP3
R101
1 k
C143 0.001
CP1
C141 0.001
R100 10 k
C149 0.47
R89
10 k
R95
5.6 k
C127
47 P
L26
68 nH
L38
68 nH
L27
3.3 H
L39
33 nH
C124
220 P
L25
82 nH
C123
68 P
R98 2.2 k
T5V
+5V
4.2
L28
3.3 H
L42
3.3 H
L43
3.3 H
C126
33 P
R79
1.8 k
R85
3.9 k
R84
3.9 k
R83
1.8 k
R87
470
R88
560
3.8
4.0
3.9
1.1
0
5.0
0
0
1.1
0
4.8
0
4.7
0
0.9
1
2
0
4.6
0
4.8
0
3.1
5.0
0
0
5.0
5.0
5.0
0
4.8
0
1.1
0
1.1
0
2.7
1.0
2.2
0
1.5
TX:+2.5dB
RX:+1.5dB
0
2.4
2.4
0
4
5
2
1
C102
7 P
C100
10 P
C183
10 P
C182
0.001
R172
22 k
R174
470 k
C22
1 P
C25
6 P
C19
0.001
L6
39 nH
L5
50 nH
R14
10 k
D4
HVC375B
C186
0.1
L20
EXCCL3225V
C86
100
L16
10.5 nH
C302
47 P
C10
0.001
L4
50 nH
L3
50 nH
C7
0.001
R2 4.7 k
D2
1SV307
C6
0.001
L2
3.0 nH
1.7
0
J1
(CHASSIS)
From /
to the
antenna
connector
L1
32 nH
C2
8 P
C4
11 P
D14
MA2S077
C93
15 P
C92
100 P
R82
4.7
C150
1
C207
10 P
R97
1 k
L32
33 nH
C147
3.3
R109
56
C209
0.001
C206 12 P
C208 12 P
C146
0.1
C138 47 P
R187 68 k
R110 33 k
C145 470 P
C195 4 P
C194 5 P
C192 3 P
C193 3 P
D17
HVC376B
D16
HVC376B
R86 120 k
L24
10 H
C129
1P
D18
1SV239
D21
HVC375B
C122 33 P
C133 22 P
C121 18 P
C132
0.1
R91 33 k
R90 220 k
R92 100 k
C137 0.01
D20
HVC376B
D19
HVC376B
L37
10 H
C203 0.001
C134 33 P
C114 33 P
C116 0.01
EP1
C113 0.75 P
C103 3 P
C111 0.001
C205 22 P
C105 0.001
C109 0.001
R76 100
R70 100
C108 0.01
R68 10 k
R61 10
T5V
T5V
T5V
T5V
VCC
L19
47 nH
C95 0.001
C97 47 P
C106 47 P
C99 0.001
R67 100
R24 1 k
R50 10 k
D15
MA2S077
R69 1 k
R65 1.5 k
R63 470
C95 0.001
C94 47 P
C91 0.001
R55 4.7 k
R54 100 k
C84 470 P
C83 0.001
R53 22
C98 10
MP1
C13 56 P
C11 22 P
R1 2.7 k
C308 0.5 P
D1 RB7006F–40
C15 0.001
C9 15 P
C5 22 P
R51 82 k
C3 24 P
C1 9 P
C8 18 P
C101 0.001
L15
4.7 H
C291 0.001
R52 150
R62 100
C90 0.001
R59 4.7 k
R58 33 k
R57 68
C292 100 P
C85 0.001
EP2
C87 27 P
L18
18 nH
C81
1
C82
0.001
L17
23.2 nH
C89 0.01
C88 0.001
R71 100 k
R72 4.7
L21 0.1 H
C107 0.001
R75 220 k
L41
0.1 H
C118 0.5 P
R80 10 k
C120 470 P
C119 0.001
C139
0.1
C110 470 P
R77 100
C104 220 k
R78 100 k
L22 0.1 H
C117 470 P
C115 33 P
D22
HVC375B
C190 5 P
C148
10
C191 4 P
R96 1.8 k
C135 0.001
BAL
REF
/IN
S5V
UNLK
SCK
R117 4.7 k
R118
4.7 k
SO
PLST
MOD
DAST
R5V
R5V
+5V
+5V
6
8
4
5
7
R113 4.7 k
C161
10 P
C166
3 P
C169
0.1
R44
390 k
R43
470
C188 0.001
C62
82 P
C58
0.001
R5V
R5V
R5V
R5V
R5V
R5V
C41
10 P
C49
2 P
R28
12
C40
1.5 P
R22
10 k
C29
2.5 P
C37
0.01
R33
330
C61
100 P
X1
C69
100 P
R39
47
R45
150 k
1
2
3
4
5
C163
4 P
R111
100 k
V+
GND
MOD
EP6
D24
MA2S111
R93
1 k
PLL
LVA
R5V
MP2
(CHASSIS)
From / to
the J401
at the
Front Unit
F1
1
2
+5V
+5V
S5V
+5V
+5V
+5V
+5V
S5V
VCC
+5V
VCC
VCC
R5V
T5V
VCC
S5V
T5V
S5V
T5V
R103
470 k
R102
47 k
S5V
S5V
15.3MHz
1.2Vp–p
REF
X2
VCOM
1
1
4
2
2
3
3
GND
VCC
OUT
+5V
R167 270 k
R168
100 k
C296 0.001
C295 0.001
R169 100 k
T5C
R5C
S5C
C241
0.001
C242
0.001
R162 4.7 k
C231 0.01
R164 4.7 k
C232 0.01
R163 10 k
R166 2.2 k
R165 10 k
VCC
+5V
S5V
S5V
VCC
VCC
+5V
C230 0.001
C307
0.1
C237 00.1
C238
4.7
C239
0.1
R191 100 k
C287
0.1
C224
4.7
R184 100 k
R154 120 k
R148 68 k
C240 0.001
C220 0.022
C180
0.1
R157 10 k
C266 0.0022
R134 33 k
R129 47 k
C269 0.001
R125 47 k
C255
0.1
C290
0.1
C304
0.1
C288
0.1
EP5
C252 0.0015
SIGNAL
MIC
R139 100 k
C279 27 P
C280 27 P
SD
C251 47 P
C259 22 P
C253 180 P
C254 0.0012
C260 22 P
C303
0.1
R194 10 k
EP4
+5V
+5V
+5V
+5V
+5V
C267 0.01
C306 0.001
C222 0.01
C221 0.039
R155 10 k
C227 0.01
C229
0.1
C243
0.1
R120 470
R196 470
C281
0.1
R192 100 k
EXOE
RSSI
R193 100 k
REF LVA
T1 T2
MOD
C226 0.001
R190
ERTU0E
P473J
C235 0.01
C233
22
R5V
C234
0.1
R161 10 k
C297 0.001
C236
10
C293 0.001
C294 0.001
+5V
EXSM
SO
SCK
R5C
T5C
S5C
MUT1
MUT2
PMFM
PMFM
MUT1
MUT2
EXOE
TMUT
C305 47 P
R170 470 k
3
5
4
D12
MA2S111
TEMP
CDEC
C225
470 P
R153
150 k
R147
100 k
R151
68 k
C171
4.7
C170
0.1
C172
0.001
2
3
12
13
14
1
R152
560 k
R180
1 k
TONE
S5V
V+
GND
SDEC
4
11
R183
22 k
R182
22 k
R181
22 k
R133
18 k
C265
0.001
R121
12 k
C250
47 P
R135
1 M
C249
47 P
C248
47 P
C247
47 P
R122
390 k
PMFM
R132
4.7 k
R131
2.2 k
C261
1
C262
1
C264
22
R141
33 k
C271
0.1
R195
10 k
C274
0.1
C276
1
C277
1
+5V
+5V
C273
0.1
C289
0.1
5.0
0
Scrambler ON
MIC
0.00MHz
5.7Vp–p
R144 1 M
X3 CR–746
R145
10
C275 1
C263
0.001
R124
33 k
C256
0.0022
R126
1 M
R127
33 k
3.6864MHz
2.0Vp–p
R128
33 k
C257
0.1
C258
0.1
R123
82 k
C246
47 P
X4
CR–765
C245
47 P
R130
2.2 k
+5V
+5V
+5V
+5V
R119
10 k
C228
0.001
+5V
+5V
C223 0.1
7
6
5
R185
470 k
R186
470
8
SIGNAL
9
10
S1
1
I
O
G
2
4
6
5
3
C168 0.1
+5V
S5V
T5V
VCC
T5V
VCC
VCC
FI1
FL–335
FI2
ALFYM450F=K
R10 1.5 k
R7
120 k
C80 0.1
R6 68 k
C72 0.001
TMUT
R4 10 k
C78 0.001
C74 0.001
T2
C76 0.1
C77 0.001
R3 10
2.6
0
R9
100
C79
0.1
R8 220 k
R5
10 k
D25
MA2S111
T5V
TMUT
0
4.9
3
5
4
2
1
2.4
0
J1
38
37
+5V
S5V
VCC
C300
0.001
C299
0.001
C298
0.001
C301 0.001
R81
ERJ2GE–JPW
9
10
11
12
13
14
15
16
CLOCK
DATA
LE
FC
NC
FOUT
P
B
FIN
LD
GND
DO
VCC
VP
OSOUT
OSCIN
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
MIXIN
GND
N-REC
N-DET
RSSI
IFOUT
QUAD
AFOUT
16
15
14
13
12
11
10
9
4
3
2
1
MTCK
MTDT
MDIO
MRDF
MSCK
MDIA
SCAT
SCST
SCK
BAL
CDCS
SO
SCK
DAST
CTRL
GND
NB
VIN
VOUT
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VIN1
VOUT1
VOUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4
VIN8
VOUT8
VOUT7
VIN7
GND
RESET
VDAREF
DO
VIN6
VOUT6
VOUT5
VIN5
AGNDIN
AGND
TXIN
TXINO
LIMLV
EXTLMIN
MOD
VSS
TCLK
TDATA
DI/O
RDF/FC
TEST
RXIN
REINF
RELPFO
REAF
REAFIN
EXPOUT
VDD
XIN
XOUT
DIA
SCLK
1
2
3
4
5
6
7
15
14
13
12
11
10
14
13
12
11
10
9
8
22
23
24
1
2
3
8
7
6
5
1
2
3
4
9
8
7
6
5
4
16
17
18
19
20
21
TXIN
LFO/P
VDD
X/CLK
X
SDIN
I/01
O/I1
O/I2
I/02
CONT2
CONT3
VSS
RXOUT
IC
VSS
AT
LD/LTH
SCIN
VCC
B
A
Q
CE
XT
XT
GND
TXOUT
VBIAS
RXIN
HFO
HBMI
LBMI
NC
P/S
NC
NC
NC
NC
VDD
CONT1
CONT4
I/04
O/I4
O/I3
I/03
24
23
22
21
20
19
18
17
16
15
14
13
8
7
6
5
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
STR
D
CLK
Q1
Q2
Q3
Q4
GND
V+
OE
Q5
Q6
Q7
Q8
Q'S
QS
CSFT
DAST
MRDF
MDIR
UNLK
TEMP
RSSI
LVIN
CDEC
SDEC
NOIS
MTCK
MTDT
EXOE
EXAT
SCAT
PLST
SCST
MSCK
MDIO
SCK
SO
SIGNAL
CDCS
TONE
MIC
3
2
1
4
5
6
1
2
3
1 2 3
6
5
4
+5V
S5V
VCC
VCC
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CSFT
DAST
MRDF
MDIR
UNLK
TEMP
RSSI
LVIN
CDEC
SDEC
NOIS
MTCK
MTDT
EXOE
EXAT
SCAT
PLST
SCST
MSCK
MDIO
SCK
SO
SIGNAL
CDCS
TONE
MIC
Q17
2SC4116BL
Q18
2SK880Y
Q12
2SC51070
Q15
XP1214
Q16
DTC144EU
Q11
2SC51070
Q10
2SC51070
Q9
2SC5100
Q8
RD01MUS01
Q7
RD0MVS1
Q14
2SC4226R25
Q13
2SC4226R25
Q4
2SC4215 O
Q3
3SK299U73
IC16
NJM12904V
IC16
NJM12904V
Q2
3SK293
IC1
TA31136FN
Q19
2SC4116BL
IC17
TC4S66F
IC16
NJM12904V
IC5
NJM12902V
IC5
NJM12902V
IC5
NJM12902V
IC11
TC4W53FU
IC10 AK2346
IC14
FX214LG
IC13 BU4066BCFV
Q27
DTA144EU
IC15 TC3W03FU
IC6
M62363FP–650P
IC12
BU4094BCFV
IC5
NJM12902V
IC9 NJM2870
Q26
TPC6103
IC7
EW–460
Q21
2SA1577Q
Q29
DTC144EV
Q22
2SA1577Q
Q24
XP6501B
Q25
DTA144EU
IC5
NJM12902V
Q23
2SB1132Q
IC4 MB15A02PFV–1
Q1
2SK1829
IC2
TA75S01F
Voltage line
NOTES :
Common line
TX line
RX line