Icom IC-F521 - Main Unit Voltage Diagram

VOLTAGE LINE
Explanatory note
TX LINE
RX LINE
COMMON LINE
MAIN
UNIT
(2)
J1
to
MIC
JACK
J2
GND
PWR
LINH
LCS
LCK
LSO
AFVI
CLI
GND
MIC
8V
5V
KR0
KR1
KR2
FSW
HORN
CLO
PTT
AFO
8V
CL0
AFO
PTT
FRONT UNIT
J2
J1
PTTI
PTTO
MCOT
MCIN
AUX
BUSY
MDWN
SIG
OPT1
OPT2
OPT3
GND
OPV3
OPV2
OPV1
GND
5V
VCC
MMUT
AFON
BEPO
RMUT
DET
DISC
REM
CCS
CIRQ
SO
SI
SCK
to
Optional
unit
BUS LINE1
R138 47k
R139 47k
R140 47k
8V
5V
R178 330k
R516 100k
R177 330k R176 330k R175 1M R174 1M R173 1M
R141
100k
R142
100k
C237 47p
CP4
APST
SI
AMSK
SO
AFCL
CCS
OPT3
OPT2
DISC
OPT1
DET
SIGOUT
RMUT
BEPO
BUSY
AFONO
FSW2
SCK
SO
PLST
UNLK
5V
MMUT
MCIN
MCOT
PTTO
AFO
MIC
PTT
GND
CLO
RES
XCTS
GND
MDI
GND
VCC
XRXD
XRTS
5V
XTXD
to Optional
cable OPC-822
PGI2
PGI1
PGO1
PGI3
GND
PGO2
NRXD
IGSW
8V
NTXD
CLI
HORN
AFVI
FSW
LSO
KR2
LCK
KR1
LCS
KR0
LINH
5V
PWR
8V
GND
BUS LINE2
R296 1k
R295 1k
10k
R109
R293 1k
R294 1k
C207
0.1
R316
100k
CP10
MICI
AFO
R284
1k
R144 100k
C219 47p C228 47p C227 47p C220 47p C217 47p C229 47p C199 47p C231 47p
C224 47p C206 47p C353 47p C204 47p C235 47p C354 47p C214 47p C209 47p
R145 100k
POSW
LINH
LCS
LSCK
KR0
KR1
KR2
FSW
LSO
AFVI
CLI
HANG
HORNO
CLO
1
3
5
2
4
R108
4.7
C523
56k
BAL
R306 100
C363
0.1
R534
D70
100k
MA2S111
C162
0.01
IC11
TC75S51F
IC26
S-812C30AMC-C2K
IC4
TB31256FL
R308
1M
C163
10
REF
R107
47k
D21 HVC362
C161
100p
C160 9p
X2
CR-664A
R106 82k
R110 47
Q19
2SC4215
Q50
2SC4081
Q51
2SA1576
Q55
XP2501
Q54
XP2401
Q52
Q53
2SC4116
2SC4116
R105 47k
D20
MA2S111
C157 100p
C158 100p R104
R322 1
2.2k R530
R527 1.5k
R526
1.2k
R209
NTCG20
C203 0.1 R210 100k
TEMP
C156
47p
C159 0.1
LVIN
R101
1k
C143 0.001
Q18
2SK880
R100
1k
R524
R96
330
3 2 1
1 2 3
4 5
5 4
6.8k
C141 0.001
CP1
R91 33k
C132 0.001
R89
R92 100k
10k
R95
11
C147 C515
22k R97
1kR507
6.8k
C146
0.1
10 C516
56k
R536
4.7k
4.7
R307
C522
FSW2
CLK
DATA
STB
LD
FSW1
VCC-PLL2
FIN2
GND
NC
SW2
CP2
VCC-PLL1 FIN1 GND NC SW1 CP1
BS2
19
18 17 16 15 14 13
1 2 3 4 5 6
20
21
22
23
24
12
11
10
9
8
7
VCC-XIN
TCXO
GND
GND
BS1
R535 4.7k
R519 47k
C358
47p
R90
100k
MOD
MODF
R291
100k R504
100k R548 150k
C350
1
R292
8V
5V
VCC
220k
C145
47p
8V
5V
D19 MA2S111
C148 10
R98 2.2k
Q17
2SC4116
R93 10
R94 10
L27
1.8∝
L29
0.47 ∝
C510
D51 D52
D16 D50
C123
100p
C121 33p
C122 33p
W3
R84
22p 67n
C124 L25
C127
270p
67n
44n
L26
L50
C128 12p
D54
D55
HVC350B HVC350B
HVC350B HVC350B
HVC350B HVC350B
HVC350B HVC350B
D53
D18 1SV245
D17
67n
L51
3.9k
R83
1.8k
Q13
2SC4226
L24 3.3
∝
C119 0.01
C120 470p
C139 0.1
EP1
L28
0.47 ∝
C126
68p
C114 18p
C129 1p
C115 33p
W4
R85
3.9k
R79
1.8k
L23 3.3
∝
C117 470p
C116
0.001
R78
1k
R80
560 [N/W]
820 [N/M]
C299
12p
C298
C509 10p
12p
L32 33n
Q15
XP1214
5
4
1
2
3
C118
0.75p
C113
0.5p
R77 10k
Q16
DTC144EU
C111 47p
C110 470p
R76 47
56 0.001
C104 0.001
R74 L52 68n 10k
Q11
2SC5107
R73 100
R525
1k
R102R521R522R523 4.7k1.2k4.7k4.7k
R520 NTCG16
L55 0.1∝
Q12
2SC5107
R75 10k
C105
0.001
C103
8p
C102
10p
R71
470
C301 0.001 R234 8.2k
Q10
2SC5107
R70 100
L21 0.15∝
C109 0.001
C100
18p
D14
MA77
C108
0.01
R68 1k
R67 10k
C98
15p
R66 3.9k
C99 0.001
Q9
2SC5107
R65 100
C107 0.001
L20 0.15∝
C101
R64 470[50W]
0.001
C93
22p[25W]
6p[50W]
C96 0.001
C97 47p L19 0.12∝
R61
100
Q8
2SC3538
C106 47p
C92
8p
R500
6p
1.2k
20p C133
20pC134
C90 12p
C89
12p[25W] 15p[50W]
L18
D72
1SV252
DA204K
D68
D11
D1
1SS375
1SS375
DAN222
D71
47n[25W]
82n[50W]
IN VCC1 VCC2 OUT
65
4 3 2 1
IC3
RA30H1317M-21[25W]
RA60H1317M-21[50W]
0.33 C524
2.2 C365
C87 0.001
C86
L37 1∝
47p
C83
20p[25W]
C84 47p
C85
0.001
C91 22
L16
LA-253
C82 20p[25W]
FI4
NFM60R-
20T152
FI3
NFM60R-
20T152
FI5
NFM60R-
20T152
[50W]
R9 220 R8 220
L5 LW-25
C12 470p
C13 47p
D2
UM9401F[25W]
D3
XB15A407[50W]
L4 44n
C15
33p
T8V
R69 4.7k
R503 3.9k
D15
MA77
R50 10k
R235 1k
C303 0.001
C302 10p
R8V
ANT
C304
10p
Q34
2SC4116
R237 680k
L35 0.22∝
R236 1.2k
C309 0.01
C305
56p
C306
4p
C307 7p
L33 0.82∝
R63 12k[25W] 2.2k[50W]
R501
680
C95
0.001
C94 47p 0.001
R541
C88
C501
56
0.001
R502
C502
150
0.001
R509
R508 6.8k
C511
470
0.001
1.2k R513
R512 6.8k
C513 0.001
R511
R510
C512
470
8.2k
0.001
TXC
T8V
T8V R8V 5V ANT
HV
R8V
5V
R8V
T8V
1
2
3
4
5
6
7
89
10
11
12
13
14
15
16
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
MIXIN
GND
N - REC
N
- DET
RSSI
IFOUT
QUAD
AFOUT
IC1
TA31136FN
1
2
3
4
5
GND
3V
VIN
VOUT
NC
NC
R44
56k
C70 390p
C71 0.1
C69
390p
C371
0.01
R515 270
R45
15k
R46 560 R47 3.3k
OI
FI2
ALFYM450F=K [N/W]
CFWM450G [N/M]
C308 3p
5V
R39 47
C67 0.001
C75 10
SQIN
R38 100k
NOIS
R36 3.9k
X1 CDBC450CX24
C61
100p
C62
82p
C348
0.001
C65 0.001
RSSI
C64 470p
C66 0.001
Q5
2SC4116
R41 47k
R42
47k
C72 0.1
Q6
DTA144EU
C9
18p
C8 33p
C526 27p[50W]
C7 56p[25W] 27p[50W]
C6 33p
C14
0.001
[25W]
C389
0.001
[50W]
L3
LA - 253
L2
LA - 243
C5 470p
C4 30p R3 47
C3
470p
C2 10p
C1 10p
L1
LA - 253
R1
10k
R537 330
2.2k[25W] 4.7k[50W]
1.5k 10 R538
R540
R539 C525
100k
R7 270 R4 270
R35
1k
R8V
T8V
R8V
SQIN
R290 470
C60
0.001
R34 120k
C58
0.001
R33
150
Q4
2SC4215
FI1
FL - 335
C56 22p
R32 1
L13
1∝
C52 12p
R31 100
R30 1k
R29 470
C50
0.001
C48 47p
C54
0.001
8p C55
0.001 C51
C53
0.01
Q3
3SK272
R25 47k
C45 220p
D10
HVC350B
C44 2p
L11 68n
R23
150k
R24
10k
C47 0.001 C46 0.001
12
R28
C49
8p
L12 0.1∝
470 470 R27 R26
C38 0.001
R289 1
C37
0.001
R20 100 L9 1.8∝
T4
C39 0.001
D9 HVC350B
R21 220k
C42 0.001
R22
10k
C43 0.001
T3
Q2
3SK293
C32 0.001
C520 3p
L54 56n
C503 47p
R16 270 R15 390k
L8 56n
C35
0.001
R19 100k
R18 22k
R208 4.7
C59 0.1
C34
0.001
R10 4.7k
Q1
2SK1829
C30
22p
C29 5p
C28 0.001
R14
10k
C27 0.001
R13 100k
D4 HVC350B
C26 0.001
T2
RSSI
R206
470k
R207 10k
D25 MA2S111
C22
1.5p
L7 60n
C21
0.5p
C23 0.001
R12
10k
C24 0.001
R11 100k
D8 HVC350B
C20 0.001
T1
L31 56n
C18
6p
D6
D7 MA2S728
MA77
D5 UM9401F
C17 10p[25W] 5p[50W]
C19 0.001
L6
44n
C81 0.001
R58
1
C77 0.001
0.001
0.001
0.001
C11
C500
C10
100[25W]
10k[50W]
100[25W]
10k[50W]
R6
R5
R53 1
C76
0.01
4
2
3
1
5
R56
150k
C79
0.22
D32
MA2S728
C379 1
IC2
Q57
DTC114TU[25W]
2SC4116[50W]
TC75S50F
R59 120k[25W]
R543 100k[50W]
C80 0.1
R52
15k
R547
1[25W]
18k[50W]
D56
MA2S111
T4
R57
10k
15k[25W]
R529
C78
0.001
R54
10k
C33
47p
TMUT
R55
4.7k
C313 47p[25W]
1[25W] 0.001[50W] C519
R2
FWD
REV
47
R43
470
REM
DET NWC
NWC
VCC
VCC
C236 47p
C152
R323
1
C153
C154
C151
47p
47p
47p
47p
0.047 47p C382 C155
C247 0.001
C239 0.001
C238 0.001
C215 47p
J9
J8
XTXD
XRXD
XRTS XCTS
RES
MD1
R155
100k
NTXD
NRXD
R151 100k R152 100k
Q44
DTC144EU
IGSW
D63
DAN202K
PGI1
D67
DAN202K
PGI2
R153 100k
PGI3
R158 10k
R157 10k
PGO1
PGO2
SCK
CIRQ
D34 MA2S111
C142
D69 MA2S728
D61 D60 D59 D58
MA2S728 MA2S728 MA2S728 MA2S728
0.001
C74 0.1
C41
3.5p
C40
1.5p 4p
C385
EP3 EP6 [25W]
C388
12p[50W] C387 12p[50W]
R86
120k
MICE
MIC
GND
CLI
MAIN UNIT (1)
C205 47p
R143
100k
R154
100k
Q42
DTC144EU
D65
DAN202K
C314 0.01
C381 0.1
C130
4.7k
0.0015
C514 0.1
C140 0.1
1.8k
R528 C518
R103
C297
22p
Q14
2SC4226
R40
1.5k
C63 0.001
R37 3.3k[N/W] 4.7k[N/M]
C25
6p
C380 22
R546 PTH9C32 [50W]
R544 150k [50W]
0.8Vp - p
(15.3MHz)
5.0V
7.0V
TX:4.3V
RX:0V
TX:4.3V
RX:0V
TX:0V
RX:5.0V
800mVrms
6.9V
LOCK:5.0V
UNLOCK:0V
6.6V
7.4V
TX:1.2V
RX:1.2V
6.5V
TX:0V
RX:2.9V
TX:2.9V
RX:0V
TX:2.2V
RX:3.1V
TX:0V
RX:3.3V
TX:6.5V
RX:0V
TX:6.4V
RX:0V
3.0V
WIDE:0V
NAR:5.0V
4.9V
4.9V
1.0V
TX:0V
RX:5.4V
TX:3.3V
RX:1.9V
TX:0V
RX:7.7V
TX:0V
RX:1.2V
Lo Level:1
- 6dBm
MEASUREMENT CONDITIONS
VOLTMETER
Amplitude(Oscilloscope):100MHz
Frequency:155MHz
Transmission:25W
TX:0V
RX:7.9V
TX:0V
RX:4.6V
TX:0V
RX:7.9V
TX:0V
RX:6.3V
TX:3.7V
RX:0V
TX:3.6V
RX:0V
TX:0V
RX:5.0V
TX:3.3V
RX:0V
11 - 2
11-2 MAIN UNIT