Icom IC-F25 Service Manual

SECTION 11 VOLTAGE DIAGRAM
11 - 1
11-1 MAIN UNIT
C130
0.047
D16
HVC350B
C354
0.001
Voltage line
NOTES :
Common line
TX line
RX line
VCC
C211
4.7
R103
47 k
C159
0.001
EP3
C158
0.1
CP1
C143
0.001
C141
0.001
R100
4.7 k
R101
470
R92
120 k
C137
0.01
C203
0.001
D22
HVC370B
C115
12 P
4 P
C134
15 P 12 P
C114
3 P 6 P
C116
0.01
EP1
C139
0.1
C104
0.001
C110
470 P
R73
100
C105
0.001
C103
2 P
R75
220 k
C111
47 P
C205
5 P
R71
68 k
R76
100
C109
0.001
C112
0.001
R78
100 k
R77
10 k
C148
10
C132
0.001
R90
470 k
C138
0.001
C129
0.5 P
R86
10
D18
MA368
D21
HVC370B
D17
HVC350B
C133
15 P 12 P
C121
12 P
5 P
C122
10 P
4 P
C119
0.001
C120
470 P
C113
0.3 P
C118
0.5 P
R95
1 k
C127
8
P
5
P
L26
10.5 nH
C126
12
P
R84
6.8
k
C123
18
P
15
P
R82
4.7
R83
6.8 k
R85
6.8
k
R79
6.8
k
RX VCO
TX VCO
R80
560
1
k
C102
5
P
AFONO
RLED
R287
330
R271 1 M
R260
100
k
R259
1 k
R272 1
M
R274 68
k
R275 100
k
R276 100
k
R277 100
k
R278 100
k
R273 1
M
DS1
CL-165HR/YG
HR
YG
R288
1.5
k
R293
18
k
C350
0.001
R295
47
k
S2
SW-167(SKQT)
S3
SW-167(SKQT)
R294
27
k
C339
0.1
TLED
1
3 4
5
6
2
R88
560
680
5
4 3
2
1
VCC
T5V
VCO5
L25
7.5 nH
C124
9
P
6
P
R96
3.9 k 2.7 k
C147
1
C149
0.47
R107
56
C208
7 P
C206
7 P
C142
0.001
R115
1.2 k
C173
0.001
C167
0.1
R40
150
C335
1
C67
0.001
C75
4.7
R38
100
k
R36
3.3 k
R48
470
R34
220
k
C56
22
P
R29
150
C50
0.001
C48
22
P
R25
4.7
k
C44
1
P
1.5
P
L11
15 nH 12 nH
C45
12 P 10 P
R23
220 k
R21
220
k
C39
10
P
C43
0.001
C46
0.001
C42
0.001
D10
HVC350B
D9
HVC350B
C60
0.01
R35
100
C59
0.001
R31
100
C57
0.001
C51
0.001
R32
100
C54
0.001
C305
6
P
C304
6
P
C53
0.01
C52
47
P
R30
1 k
C165
0.01
C162
56
P
C71
0.1
C70
470
P
R46
470
C68
220
P
C66
0.001
C63
47
P
C65
0.001
R37
2.7
k
NOIS
RSSI NWC
C164
7
P
C355
0.0018
R108
27 k 18 k
C145
47 P
R109
100
k
C150
1
R97
1 k
R5V
C163
4
P
C166
3
P
FI2
ALFYM450F=K
R39
47
C169
0.1
1 1
6
X1
CDBC450CX24
15
14
13
12
11
10
9
2
3
4
5
6
7
8
*3 MULTI
L32
18 nH
C146
0.47
R89 10 k
R98
2.2 k
R106
10 k
C157
10 P
C156
0.001
1
X2
CR-783
REF
2 3
4
T5V
S5V
IC4
MB15A02PFV-1
IC1
TA31136FN
Q4
2SC4215 O
Q3
3SK299 U73
Q26
UNR9213J
Q18
2SK880 Y
Q17
2SC4116 BL
Q14
2SC4226 R25
Q12
2SC5107 O
Q16
UNR9213J
Q11
2SC5107 O
Q15
XP1214
Q13
2SC4226 R25
R94
150 k
C155
47 P
C152
47 P
C153
47 P
C154
47 P
C151
0.1
D24
MA2S111
R93
1 k
C140
0.1
C149
0.001
C202
0.1
R114
150
k
S5V
LVIN
UNLK
MOD
LV
A
T5V T5V
R5V
VCC
S5V
+5V
R151
1.5
k
DET
14
12
8
10
9
13
R157
2.2
k
4
11
VCC
+5V
S5V
R221
470
R161
4.7 k
R164
3.9
k
R159
12
k
R167
5.6
k
R162
10
k
R165
3.9
k
C271
0.047
C273
0.047
R170
12 k
R163
10 k
C274
0.047
BIAS
C272
0.047
C276
0.047
R237
10
k
R110
47
k
R238
100 k
C160
0.1
C310
0.1
C275
0.022
R166
47
k
R180
1
M
1
3
2
C270
0.047
R160
100
MC1
SKP-4538
J2
HSJ1122-010010
J3
HSJ1456-010320
J1
BM02B-ASRS-TF
J5
BM02B-ASRS-TF
1 2
F1
ERBFE3R00U
J501
C501 C502
1 2
R224
470
C308
0.001
C311
0.001
C312
47
P
C314
0.001
C309
0.001
C238
0.001
C237
22
C236
0.001
C306
0.001
R223
33
k
C307
0.001
S1
SKHLLFA010
R138
4.7
k
C235
0.01
C234
0.001
R136
4.7
k
C233
0.01
R134
4.7
k
R133
10
k
C228
10
C229
0.001
C230
0.1
C227
0.01
C226
4.7
C221
0.1
C222
0.1
R149
390
k
C223
0.1
R131
ERTJ0EP473J
R132
100
k
C255
0.047
C261
0.1
C258
0.0068
C269
330
P
C300
270
P
C286
0.001
C287
10
R185
120
k
R184
5.6
k
C288
0.001
C256
0.039
R150
180
k
C254
0.1
C252
820
P
R146
100
k
R145
100
k
C224
0.1
C225
0.001
3 4
5
2
CTRL VIN
VOUT
GND
NB
1
6 4 5
1 3 2
C232
0.1
C231
0.01
C265
0.001
R222
82 k
C266
0.1
C264
10
S5C
R135
10
k
R5C
R137
10
k
T5C
SCK
R117
4.7 k
R118
4.7 k
R111
100 k
R113
390 k
9 8
7
6
5
4
3
2
1
CLOCK FIN
LD
GND
DO
OSCIN
OSCOUT
VP
VCC
DATA
LE
FC
B
P
FOUT
NC
10
11
12
13
14
15
16
SO
PLST
R104
330 k
R105
470 k
REF
C213
0.001
+5V
BAL
VCON
GND OUT
VCC
Q19
2SC4116 BL
OSCIN MIXIN
AFOUT
QU
AD
IFOUT
RSSI
N-DET
N-REC
GND
IF IC
IF AMP
FILIN
FILOUT
DEC
IFIN
VCC
MIXOUT
OSCOUT
C168
0.1
R44
100
k
C69
470
P
R45
100 k
R43
47
C188
0.001
C61
100
P
C58
0.001
R5V
MP3
R33
150
FI1
FL-335
46.350 MHz
MIX
C41
5
P
C49
5
P
2
P
C40
0.3
P
RF AMP
R22
10
k
2 1
4 6 5 3
C62
82
P
C64
0.01
2
5 4
3
1
T2
Q21
2SA1577 Q
Q22
2SA1577 Q
Q23
2SB1132 R
Q24
XP6501 AB
Q28
UNR911HJ
IC6
NJM13403V
Q34
2SK3019
Q29
UNR9210J
CONNECT BOARD
IC6
NJM13403V
Q35
2SK3019
Q25
UNR9113J
IC5
NJM12902V
IC5
NJM12902V
IC7
NJM12904V
IC7
NJM12904V
IC8
M62363FP-650C
IC10
CD4066BPWR
IC6
NJM13403V
IC6
NJM13403V
IC5
NJM12902V
Q27
UNR9213J
Q30
2SA2048TL R
IC12
TA7368F
Q31
XP6501 AB
IC5
NJM12902V
IC5
NJM12902V
IC6
NJM13403V
IC7
NJM12904V
IC9 NJM2870
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
CP12
J4
+5V
CP11
CP10
BEEPO
DISC
CCS
CIRQ
SO
SI
SCK
OPV1
OPV2
OPT3
OPT2
OPT1
SIGO
PTT[PTT0]
BUSY
MCIN
PTTI
NMI
R280 10
k
CP14
RES
CP15
DAST[OPV3]
R284 100
J4
AXN330C038
MCO
T
DET
VCC
KEY
Q32
XP4216
Q3
3
UNR9113J
IC13
HD6433687A91FP
IC15
BR24L16FV-WE2
UNLK
P62/FTI0C0P35
P34
P51/WKP1
P50/WKP0
VCC
OSC1
OSC2
VSS
TEST
RES
VCL
X1
X2
AVCC
PB7/AN7
PB6/AN6
P36 PB5/AN5
PB4/AN4 PB0/AN0 PB1/AN1 PB2/AN2 PB3/AN3
P30 P31 P32 P33
P17/IRQ3/TRGV
P16/IRQ2
P15/IRQ1/TMIB1
P14/IRQ0
P72/TXD_2
P71/RXD_2
P37 P52/WKP2 P53/WKP3 P54/WKP4 P55/WKP5/ADTRG P10/TMO
W
P11/PWM P12 P56/SD
A
P57/SCL P74/TMRIV P75/TMCIV P76/TMO
V
P24 P63/FITOD0
P61/FTI0B0
P60/FTI0A0
P64/FTI0A1
P65/FTI0B1
P66/FTI0C1
P67/FTI0D1
P85
P86
P87
P20/SCK3
P21/RXD
P22/TXD
P23
NMI
3316
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TEMP
ESCL
ESDA
R265
1
k
17
PLST
PLED
NWC
34
42
TLED43
OPT344
OPT145
OPT246
PTT47
DAST37
S5C38
T5C39
R5C
R261
1
k
40
41
35
36
SI
NMI
PLSW
48
P70/SCK3_2
BUSY DUSE CENC2 CENC1 CENC0 SENC3 SENC0 SENC1 SENC2
26
CBI2
27
CBI3
28
SCK
29 30 31 32
R264
47
k
R263
10 k
R262
100
k
C349
0.1
SO BEEP
18 19 20
AFON
21
CBI0
22 23 24 25
CBI1
4
5
6
7
8
3
2
1
VCC
WP
SCL
SDA
A0
A1
A2
VSS
64 LVIN
63
RSSI
62
KEY
61
SDEC
60 59 REMO
CDEC
58 TMUT 57 MMUT 56 RMUT 55
CCS
54 53 52 51 50 49
CIRQ
NOIS
OPV2 OPV1
CLI
CLO
R257
1
k
R266
15
k
R258
100
k
CPU5
BATV
CP16
SIGO
C340
0.1
R292
100
k
R291
100 k
C348
0.1
3
VSSNC
CD
VDD
OUT
2
1
R252
10
R256
10
k
RES
C344
15
P
R255
12 k
R254
12
k
CSFT
C342
12
P
R182
100
k
R190
330
C243
0.01
R142
470
R141
470
C241
0.1
C242
0.1
C280
0.0047
C281
0.0039
C282
180
P
R187
1
k
R179
1
k
C343
6
P
R251
12
k
D28
MA2S077
C341
0.1
C345
0.1
C346
0.1
X3
CR-764
4
5
IC14
BD5242G
TEMP
SDEC
CDEC
V+
GND
4
C253
820
P
C251
0.022
R148
82
k
C257
0.1
R154
22
k
R153
22
k
R152
22
k
R147
39
k
S5V
R144
10
k
C244
0.1
R5V
T5V
C285
0.1
R181
47
k
R175
220
k
R174
100 k
R143
15
k
C279
4.7
R173
120
k
R186
82 k
C289
0.1
R303
4.7
k
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
+5V
+5V
VOUT1
VOUT2
VIN2
VDD
LD
CLK
DI
VIN3
VOUT3
VOUT4
VIN4
VIN8
VOUT8
VOUT7
VIN7
GND
RESET
VDAREF
DO
VIN6
VOUT6
VOUT5
VIN5
R177
33
k
6
5
7
R176
150
k
R178
120
C283
0.47
C347
0.01
11
V+
GND
4
8
9
10
11
V+
GND
R220
100
CP4
PTTI
PTT
DISC
DET
RMUT
MCIN
BEEP
BEEP0
CLO
CLI
CBI0
CBI3
CBI2
CBI1
MCO
T
+5V
R225
100
1
3
4
6
78
5
2
S4
TP70TF5163
15.9F-2775
R226
TP76N00N-15F-A103-2251A
VCC
9
C313
47
P
R241
ERJ2GE-JPW
R240
68
CP13
R242
ERJ2GE-JPW
R195
10
k
R210
12 k
C295
0.0027
C297
180
P
C298
0.0082
C299
68
P
AFON
C321
0.001
R235
100
k
C320
470
P
C319
0.1
R232
3.3
k
C317
10
C322
0.047
C318
0.1
R233
3.3
k
C316
0.1
R231
1
k
1 2 3
6 5 4
C315
0.001
R236
330
k
R234
150
k
D29
1SS400
D27
DAN222
C326
100
R229
10
C323
0.047
R230
10
C325
10
C324
47
P
6
7
NFRIPPLE
PHASE
PREGND
PWGND
POUT
VIN
NC
R227
10
k
R228
1
k
VCC
NC
8
9
10
AFONO
C296
0.0056
C292
0.1
C291
0.015
C293
820
P
C290
0.1
R201
47
k
D26
RB876W TL
MMUT
CP3
CP2
13
12
14
SIGNAL
R156
470
k
C260
470
P
R155
100
k
C259
1
R171
150
k
C277
0.1
R191
180
k
R194
22
k
R196
47
k
R197
47
k
R198
47
k
R192
56
k
R193
22
k
R206
220
k
R207
100
k
R208
47
k
R209
22
k
R211
68
k
R212
68 k
R213
68
k
R214
68 k
R215
68
k
6
5
7
2
3
1
R168
470
R169
150
k
C278
100
P
R172
270
k
R183
6.8
k
2
1
34
2
1
34
C1
C2
C3
A1
B1
A2
B2
A3
B3
9
8
10
BIAS
S5V
R200
4.7
k
C284
0.1
13
12
14
S5V
CENC0
CENC1
CENC2
DUSE
SENC0
SENC1
SENC2
SENC3
NWC
BAL
SO
SCK
DAST
MOD
LV
A
REF
T1 T2
5
4
3
2
1
RMUT MMUT
8
9
10
11
12
13
14
1
I/O1
O/I1
O/I2
I/O2
CONT2
CONT3
VSS
I/O3
O/I3
O/I4
I/O4
CONT4
CONT1
VDD
2
3
4
5
6
7
BIAS
C161
10 P
C209
0.001
R116
680
k
L12
33 nH 39 nH
L13
0.27
H
L22
22 nH
L21
33 nH
L41
33 nH
L27
1.8
H
L28
1.8 H
L33
0.82
H
L35
0.22
H
L43
1.8
H
L42
1.8 H
T5V
R87
220
k
L23
0.82
H
L38
27 nH
C91
4.7
D31
MA8043
L
C84
47 P
R55
4.7 k
R53
10
120
C357
22 P
C83
10 P
MP1
C13
12 P
9 P
C16
30 P
C11
7 P 3 P
C170
0.001
C171
47 P
R302
220
R52
220
C8
3.5 P
6 P
C5
4 P 3 P
C3
8 P 7 P
C1
8 P 7 P
R1 2.7 k
C186
0.5 P
C185
0.5 P
R296 2.7 k
R297
1 k
R2
1 k
C74
0.001
D1
RB886G
D30
RB886G
C18
0.001
C178
47 P
C176
0.001
C97
47
P
C96 0.001
L19
12 nH 10 nH
R62 22 k
C89
4 P
R57
47
C180
47 P
R65
100
C106
47 P
R68
10 k
C108
0.01
R70
10
C99
0.001
R67
100
R66
15 k
L20
18 nh
15 nH
C182
8 P 7 P
R69
4.7 k
R50
100
R24
10 k
C36
0.001
R17
47
C31
0.001
R123
1.8 k
R19
82 k
R20
1 k
47 k
L9
12 nH 10 nH
C37
0.001
C38
2
P
1.5 P
C32
0.001
C333
47 P
R16
100
R15 47
k
C25 8P
L8
22 nH 18 nH
C24
24
P
22
P
D8
HVC350B
D7
HVC350B
C27
0.001
R14
10
k
D4
HVC350B
D3
HVC350B
C22
8
P
L7
22 nH 18 nH
C21
24
P
22
P
D6
MA2S728
C17
68
P
D5
MA2S077
L30
33nH
C14
4
P
C177
4
P
C73
0.001
R10
1
k
R7
120
k
C80 0.0047
T2
TMUT
R4
10 k
C78
0.001
C72
47
P
C76 0.01
R3
47 82
C77
0.001
C28
0.001
T1
RSSI
R12 10
C33
0.001
C34 47
P
R125
220 k
D25
MA2S111
D15
MA2S077
R61
47
C107
0.001
FI3
NFM60R20T152
21
C94
470
P
C183
47 P
R59
4.7 k
C88
0.001
R58
33 k
R56
ERJ3GE-JPW
C81
0.01
C82
0.001
C179
0.001
L17
21 nH
R301
ERJ2GE-JPW
C86
47
P
27
P
3
Q7
RD07MVS1
Q8
RD01MUS1
AGC
R124
470
k
Q5
2SC3356 R25
C92
12
P
C93
5
P
8
P
Q9
2SC5107 O
C98
5
P
10 P
D14
MA2S077
C100
10
P
VCC
T5V
Q10
2SC5107
O
C302
10 P
C303
0.001
C35
0.1
R18
10
k
Q1
2SK1829
RF AMP
Q2
3SK293
C30 7 P
C23
2.5
P
2
P
C20
7 P
C19
0.001
L5
LQW1608A22NG00
R9 270
APC
T5V
C79 0.22
R8
470
k
150
k
R5
10
k
22
k
R6
100
k
Q6
UNR9113J
4
5
3
1
2
IC2
TA75S51F
R13
100
k
R11
100
k
T5V
L3
0.4-0.9-2TL
L4
0.4-0.9-2TL
C7
0.001
D2
1SV307
C6
0.001
L2
14 nH
L1
17.5 nH
C2
2
P
1.5
P
C4
2.5 P
LPF
ANT BOARD
L45
17.5 nH
R51
82 k
C175
3 P
2.5 P
R54
33 k
C136
0.1
C135
0.001
C356
4.7
L15
0.82 H
L40
0.82
H
L29 1.8 H
C144
47 P
CHASSIS
S2
AS-243-A13
(Only F24S, F25S)
T: 6.8
R: 6.6
T: 0.0
R: 7.2
C: 2.2
T: 4.8
R: 0.0
T: 4.8
R: 0.0
C: 5.0
T: 4.9
R: 5.0
T: 0.0
R: 4.9
T: 0.0
R: 3.3
T: 0.0
R: 4.7
T: 0.0
R: 1.1
T: 0.0
R: 4.7
T: 0.0
R: 4.7
T: 0.0
R: 0.8
T: 0.0
R: 4.4
T: 2.4
R: 0.0
T: 0.0
R: 4.9
C: 3.9
C: 4.2
C: 4.7
T: 0.0
R: 4.9
T: 4.9
R: 0.0
C: 4.9
C: 3.6
T: 0.0
R: 1.5
T: 2.8
R: 0.0
T: 0.9
R: 0.0
T: 0.0
R: 4.9
T: 0.0
R: 0.4
T: 0.0
R: 4.7
T: 2.0
R: 0.0
T: 3.9
R: 0.0
C: 4.9
T: 0.0
R: 2.0
C: 2.2
T: 4.8
R: 0.0
T: 2.1
R: 0.0
T: 1.7
R: 0.0
T: 7.1
R: 7.2
T: 3.3
R: 0.0
T: 0.0
R: 1.8
T: 0.0
R: 2.2
C: 4.9
C: 4.9

Icom IC-F25 Specifications

General

Brand	Icom
Model	IC-F25
Category	Transceiver
Language	English