![background image](http://html.mh-extra.com/html/icom/ic-f3gs/ic-f3gs_service-manual_612560036.webp)
VCC
78
9 k
R120
68 k
R145
1 M
D26
DAN202K
Q15
2SB1132 R
R126
10 k
C149
0.1
C146
0.001
C145
10
R122
2.7 k
4
5
6
3
2
1
Q16
XP6501 AB
C140
0.1
R121
1 k
C139
0.1
NC
1
VCC
2
NC
3
VIN
4
RIPPLE
5
NF
6
PHASE
7
PREGND
8
PWGND
9
POUT
10
IC5
TA7368F
C171
0.1
R123
3.3 k
R128
10
C150
10
R127
33
C151
47 P
C152
0.047
C153
100
AFOUT
DS2
LNJ310M6URA
DS3
LNJ310M6URA
R204
3.3 k
Q25
2SC4116 GR
VOLOUT
CTCIN
REMO
AFONOP
AFON
TEMPS
PB0/AN0
1
P97/SEG40 75
AVSS
2
TEST
3
X2
4
X1
5
VSS
6
OSC1
7
OSC2
8
RES
9
NMI
10
P20/IRQ4/ADTRG
11
P21/SCK1
12
P22/SI1
13
P23/SO1
14
P24/SCK3
15
P25/RXD
16
P26/TXD
17
P27/IRQ0
18
P17/IRQ3/TMIF
19
P16/IRQ2
20
P15/IRQ1
21
P14
22
P13/TMIG
23
P12/TMOFH
24
P11/TMOFL
25
P67/SEG16
51
P70/SEG17
52
P71/SEG18 53
P72/SEG19 54
P73/SEG20 55
P74/SEG21 56
P75/SEG22
57
P76/SEG23
58
P77/SEG24 59
P80/SEG25
60
P81/SEG26 61
P82/SEG27
62
P83/SEG28 63
P84/SEG29 64
P85/SEG30 65
P86/SEG31 66
P87/SEG32 67
P90/SEG33 68
P91/SEG34 69
P92/SEG35 70
P93/SEG36 71
P94/SEG37 72
P95/SEG38 73
P96/SEG39 74
IC8
HD6433876B50H
BDET
BDET
R265
100 k
C302
0.1
SQLIN
SCK
SI
SO
DAST
CLOUT
CLIN
NOIS
VIN
XIN
XOUT
RESET
CSIFT
SEG10
SEG11
SEG12
SEG7
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG8
SEG9
R155
100
R205
1.5 k
R237
1 k
T5C
TXC
AFON
CTDA2
CTDA1
CTDA0
ESCK
ESDA
UNLK
R236
1 k
S5C
R5C
DUSE
OPV3
OPV2
NWC
OPV1
MMUT
RMUT
MMUT
RMUT
C296
0.001
C297
0.001
R246
100 k
R245
100 k
CONT
5
k
R196
100 k
R272
100 k
D
only
R273
100 k
D
only
R235
680 k
C199
0.1
OPT2
OPT1
CCS
OPT3
CIRQ
BUSY
R13
33
R15
100
T5
VCC
R28
100
R27
470
C39
0.001
R19
100
R21
100
R23
100
C46
0.001
1
3
2
4
5
6
Q11
XP6501 AB
R31
1 k
R175
1 k
R151
47 k
CP1
(LV check ponit)
R30
4.7 k
C50
10
C300
0.001
C301
0.001
C211
0.1
R45
100
Q34
2SK1069 4
R184
10 k
C63
39 P
C64
4 P
T5
R5
S5
VCC
C72
1
C70
0.01
R49
47 k
C69
68 P
D7
1SV288
C71
0.1
FRQCON
AFOUT
DISCIN
AFOUT
DISCIN
SQLIN
AFOUT
LVIN
DBAL
5V
T5
R5
R5
S5
S5
VCC
DISCIN
AFOUT
5V
T5
R5
R5
S5
S5
R5
S5
VCC
DISCIN
AFOUT
5V
W8
ERJ3GE-JPW
R50
470 k
R51
100 k
S5
R5
S5
5V
R5
C60
0.001
C55
0.01
SCK
UNLK
PLST
SO
DEV
C293
0.1
R223
100 k
C49
0.68
VCC1
1
IN1
2
ENB
3
CLK
4
DATA
5
T1
6
LOK
7
CP1
8
FI1
9
FO1
10
FO2 11
FI2 12
CP2 13
GND2 14
XO 15
XI 16
XB 17
VCC2 18
IN2 19
GND1 20
IC1
UPD3140GS
R32
560
C54
0.001 C290
15 P
C295
0.001
R35
680
R34
10
C42
0.001
D28
MA77
Q32
DTC144EU
C47
0.1
C229
0.001
R249
47 k
R208
10 k
R209
100 k
R25
4.7 k
R26
4.7 k
C36
0.001
C37
2 P
C38
2.5 P
C218
0.001
C235
0.1
L12
2.7 H
R29
1 k
Q7
2SC5085 Y
Q8
2SC5085 Y
S5
R5
5V
R5
C27
18P
Q4
2SC4215 O
R18
39 k
C29
0.001
Q5
2SC4215 O
C30
22 P
C28
12 P
C32
0.001
R20
68 k
Q6
2SC4215 O
R22
68 k
C33
0.001
R17
1 k
C35
0.001
C31
5 P
C34
0.5 P
C97
5 P [OTHER]
4 P
N
C91
5 P
L8
0.1 H
S5
D4
MA77
D3
MA77
C23
0.00
R11
1.2 k
R12
3.3 k
C24
0.001
C26
0.001
R14
4.7 k
R16
1
C25
6 P
C90
0.001
C89
0.001
Q12
3SK293
D12
HVU350B
D11
HVU350B
R67
100 k
R66
100 k
R64
100 k
C95
0.001
C93
0.001
R65
100 k
C92
100 P
C96
180 P
C94
1 P
C98
5 P [OTHER]
3 P
N
C111
0.01
R77
10
E
100 [OTHER]
R81
1.5 k [OTHER]
560
J
R80
100 k
R269
2.7 k
D
only
C307
0.01
D
only
R253
470
C115
0.01
C108
0.01
C107
0.001
Q14
2SC4215 O
Q41
2SC4116 GR
D
only
C109
0.001
F (DET)
C118
0.01
R84
390
R244
100 k
X3
CDBC450CX24
R85
1.5 k
C120
0.1
C119
1
OSCIN
1
OSCOUT
2
MIXOUT
3
VCC
4
IFIN
5
DEC
6
FILOUT
7
FILIN
8
AFOUT
9
QUAD
10
IFOUT
11
RSSI
12
N-DET
13
N-REC
14
GND
15
MIXIN
16
IC2
TA31136FN (D)
C117
0.001
R83
470
R270
47 k
D
only
C113
0.001
C112
0.001
R136 100
C114
0.033
C303
0.001
C66
18 P
C67
10 P
Q10
2SC4116 GR
R89
1.2 k
R90
680 k
C53
18 P
C51
47 P
C56
0.01
C65
2 P
L13
1.0 H
L25
1.0 H
P10/TMOW
VSS
COM4
COM3
COM2
COM1
KS4
KS3
KS2
KS1
KS0
KR3
KR2
KR0
KR1
S1
V3
V2
V1
VCC
PA3/COM4
PA2/COM3
PA1/COM2
PA0/COM1
P50/WKP0/SEG1
P51/WKP1/SEG2
P52/WKP2/SEG3
P53/WKP3/SEG4
P54/WKP4/SEG5
P55/WKP5/SEG6
P56/WKP6/SEG7
P57/WKP7/SEG8
P60/SEG9
P61/SEG10
P62/SEG11
P63/SEG12
P64/SEG13
P65/SEG14
P66/SEG15
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
P81/AN1
P82/AN2
P83/AN3
P84/AN4
P85/AN5
P86/AN6
P87/AN7
AVREF
VTREF
TONED
TONEM
AVCC
PE3/SEG52/CL1
PE2/SEG51/CL2
PE1/SEG50/DO
PE0/SEG49/M
PD7/SEG48
PD6/SEG47
PD5/SEG46
PD4/SEG45
PD3/SEG44
PD2/SEG43
PD1/SEG42
PD0/SEG41
VCC
LVIN
SD
REMO
PTT
CTCIN
CPU5
CPU5
CPU5
CPU5
DTMF
MTONE
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
COM4
1
COM3
2
COM2
3
COM1
4
SEG1
5
SEG2
6
SEG3
7
SEG4
8
SEG5
9
SEG6
10
SEG7
11
SEG8
12
SEG9
13
SEG10
14
SEG11
15
SEG12
16
SEG13
17
SEG14
18
SEG15
19
SEG16
20
SEG17
21
SEG18
22
SEG19
23
SEG20
24
SEG21
25
SEG22
26
COM1
27
COM2
28
COM3
29
COM4
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
COM1
COM2
COM3
COM4
30
DS1
LM-7045B
O
I
NOIS
SD
DET
NWC
T4
T3
1LO
PLST
C48
2.2
R33
2.2 k
R186
47 k
C233
0.001
R185
1 k
R
47
C87
0.01
C88
0.001
C234
0.001
L11
MC152-E558CN-100024
D5
HVC350B
D13
HVC350B
D6
MA2S077
C44
0.001
L34
2.2 H
C99
0.001
R69
100
C104
0.001
R72
10 k
R70
4.7 k
M
,
P
10 k
A
56 k
F
100 k [OTHER]
C102
15 P
C101
56 P [OTHER]
22 P
A
R68
4.7 k
Q13
3SK239A [OTHER]
3SK320
E
C100
39 P [OTHER]
22 P
A
L21
47 nH
L29
0.1 H
C105
0.01
R75
120 [OTHER]
150
A
R48
1 k
A
,
O
10 k [OTHER]
X1
CR-664A [OTHER]
CR-671A
D
,
H
L14
47 nH
B
82 nH
C
C61
12 P
C
18 P
B
FI2
SFPC450E
G
,
P
SFPC450D
J
SFPC450G [OTHER]
CFWC450F
D
R88
33 k
R
39 k [OTHER]
R87
2.2 k
I
470 [OTHER]
C121
220 P
I
330 P [OTHER]
C122
220 P
I
330 P [OTHER]
C116
82 P
I
120 P [OTHER]
R79
560 except
J
1.2 k
G
C110
1 P
G
3.5 P
J
9 P [OTHER]
R262
1 k [OTHER]
1
G
C106
39 P
E
47 P
G
56 P [OTHER]
L20
0.47 H [OTHER]
0.56 H
E
,
G
FI1 (31.05MHz)
FL-311 [OTHER]
FL-312
G
FL-333
M
,
P
FL-334
J
R82
2.2 k [OTHER]
3.9 k
I
R86
47 k
I
82 k [OTHER]
C41
30 P
B
39 P
C
C45
82 P
C
180 P
B
L10
0.1 H
C
0.15 H
B
L9
0.1 H
C
0.15 H
B
R61
47
L18
56 nH
C
68 nH
B
C62
9 P
C
18 P
B
R187
1 k
B
100 k
C
R264
68 k [OTHER]
150 k
R
L19
56 nH
C
68 nH
B
R41
47
B
100
C
C256
0.001
C255
0.001
R274
10 k
D
only
C308
0.01
D
only
NOTE
R271
47 k
D
only
TX: 0 V
RX: 4.99 V
TX: 0 V
RX: 3.96 V
1.5 V (Light ON)
94 V
VOLMIN — VOLMAX
7.23 V — 7.07 V
3.31 V
TX: 0 V
RX: 3.47 V
TX: 0 V
RX: 3.64 V
TX: 0.85 V
RX: 0.47 V
TX: 0.97 V
RX: 1.03 V
TX: 1.92 V
RX: 1.98 V
TX: 0 V
RX: 3.24 V
TX: 5.03 V
RX: 0.05V
4.72 V
3.57 V
3.58 V
3.59 V
3.37 V
TX: 0.7 V
RX: 0.73 V
TX: 0.8 V
RX: 0 V
4.03 V
1.44 V
TX: 0 V
RX: 2.3 V
0 V
0 V
TX: 1.39 V
RX: 2.47 V
TX: 0 V
RX: 0.53 V
TX: 0 V
RX: 4.58 V
0 V
4.62 V
TX: 0 V
RX: 3.96 V
TX: 0 V
RX: 4.76 V
TX: 0 V
RX: 4.76 V
TX: 0 V
RX: 2.43 V
A
: L-band of ETS/CEPT version
B
: L-band
C
: H-band
D
: W/N-type
E
: ET
G
: W-type of [GEN]
H
: EIA/TIA version
I
: N and W/N-type
J
: W-
L
: H-band of [GEN] and EIA/TIA version
M
: N-type of ETS/CEPT version
N
: H-b
P
: M (20 kHz)-type
Q
: 100 channel version
R
: N-type
Summary of Contents for IC-F3GS
Page 1: ...SERVICE MANUAL VHF FM TRANSCEIVERS ...
Page 39: ......
Page 40: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1V q 2000 Icom Inc ...
Page 41: ...SERVICE MANUAL UHF FM TRANSCEIVERS ...
Page 82: ......
Page 83: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 13713IZ C1U 1 2000 Icom Inc ...