Icom IC-F40GS Service Manual - page 41
OPV21
OPV22
OPV23
FCLR
MSKE
RGS2
MAIN UNIT
MAPD
DSIN
LV
FLAC N PLL
CLOCK
1
DATA
2
STROBE
3
VSS
4
RFIN
5
RFIN
6
VCCP
7
REFIN
8
RA
9
AUXIN
10
PHA 11
VSSA 12
PHI 13
PHP
14
VDDA 15
RN 16
RF
17
LOCK 18
TEST 19
VDD
20
IC1
SA7025
DK-T
Q14
2SK880
R46
12k
R49
47k
R50
1k
R51
10k
C102
0.0047
C109
0.1
CP7
C100
0.001
C101
0.001
C103
10p
L25
1.8
µ
H
R337
1k
REF
D
F
+5V
R52 100
R55 22k
R57
2k
R58 1k
R59 2k
C104
0.1
C99 47p
C108
47p
1
3
4
5
2
IC2
TC75S51F
R53
220k
C424
4.7
C107
47p
C105
0.001
R54
100
C106
0.1
R336
27k
VCON
1
GND
2
OUT
3
VCC
4
X1
CR-667
15.600 MHz
R361 56k
VCC
LVIN
BUSY
AFON
SIG1
BEP1
SPLO
FRCN
PLRS
T5V
+5V
OPT11
OPT12
OPT13
AUX
APST
DIN
RGS1
BIAS
OPT1
OPV11
OPV12
OPV13
R60
100k
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
J1
D10
DAN202U
R294 47k
R295 47k
R296
47k
OPT2
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
J2
R64
47k
R65
47k
R66
47k
OPT21
OPT22
SIG2
OPT23
W/N FILTER
C
E
DSIN
R62
1.2k
R63
56
C87
3p
C98
0.01
C88
0.001
C89
6p
C90
6p
C91
0.1
C95
47p
L27
0.82
µ
H
L28
1.8
µ
H
L29
154nH
R67
100k
3
1
2
FI2 SFPCA450KE4A
S5V
S5V
BEP2
VCOS
ULCK
REM
+5V
+5V
+5V
+5V
R5V
+5V
R5V
PLST
SCK
SO
SCK
SO
×
3 MULTI
Q15 2SC4081
R45
10
R61
680k
R89
1.5k
R90
47
C76
100p
C78
0.001
R47
20K
C80
0.1
C83
0.01
C79
0.001
C81
47p
C82
10p
C84
4p
C85
4p
C86
5p
L26
1.0
µ
H
C74
0.047
R44
3.9k
R43
2k
R91
10k
R42
10
R377
120k
R378
47k
C77
0.33
IF
Q17
2SC4081
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
AFOUT
9
QUAD
10
IFOUT
11
RSSI
12
N-DET
13
N-REC
14
GND
15
MIXIN
16
IC3 TA31136FN
X2
CDBCB450KCAY24
R82
15k
R93
47k
R92
47k
C114
0.1
C124
10
C115
0.001
C116
470p
C117
0.001
C125
100p
C112
470p
C113
0.01
C123
100p
R94
1.2k
C118
0.001
R96
2.2k
L42
1.8
µ
H
R88
22k
C111
0.001
L48
1
µ
H
NOIS
RSSI
Q16
DTA144EUA
D15
DAN202U
D16
DAN202U
R77
15k
R78
22k
R79
12k
R81
4.7
C110
0.1
C216
0.047
C397
0.0047
C399 0.0047
R80
22k
R83
39k
R85
100k
R87
820
R75
100k
R73
100k
R86
150k
3
1
2
FI3 SFPCA450KG1A
R342
3.3k
W/N
S5V
SI
RMUT
MMUT
CIRQ
SQIN
CCS
PTOT
D14
DAP202U
D13
DAP202U
MCIN
MCOT
CH SELECT
G
C365
47p
C366
47p
C367
47p
C231
0.0047
R289
100k
C401
47p
C310
47p
R323
100k
C430
470p
C1
1
C2
2
1
3
2
4
4
5
8
6
PTOT
CB10
CB11
CB12
CB13
PTIN
PTIN
AF FIL
MCOT
A
MCIN
R186
68k
R187
4.7k
C226
0.047
C227
0.033
R188
100k
R172
68k
R189
470
Q45
UN911H
C230
10
R185
120k
Q27
2SC4213
R168
39k
R184
12k
L47
1.0
µ
H
B
1
3
4
5
2
IC10
TA75S01F
C225 0.047
R317
470k
R183 1.5k
C194
0.0047
C217
0.1
C218
0.0047
R175
5.6k
C455
0.1
R371
22k
R372
33k
R373
4.7k
Q47
2SC4081 R
C456
0.1
R370
47k
C233
0.1
R288
10
C232 0.0022
C203
0.0022
R166
10
REG
Q31
2SA1362
Q32
2SB1132
1
2
3
4
5
6
Q33
XP6501
R198
10k
R199
4.7k
R200
10k
R202
1k
C241
0.01
C254
4.7
R203
10k
C426
0.1
IC12
AN8005M
VCC
VCC
Q29
2SA1362
Q30
2SA1362
R195
4.7k
R196
10k
R197
4.7k
C239
0.01
C240
0.01
R190
100k
C416
0.1
C235
22
C237
22
C238
22
Q46
DTC144EUA
D40
MA742
C425
0.1
R298
100k
C427
47p
VCC
VCC
VCC
VCC
VCC
AFOUT
FSW
S5V
S5V
S5V
S5V
T5V
T5V
R5V
R5V
R5V
R5V
R5V
+5V
+5V
+5V
+5V
+5V
VCC
+5V
KR3
KR2
KR1
KR0
RESB
RS
WRB
RDB
D1
D2
D3
D4
D5
D6
D7
FRST
D0
POWER
INT SP SW
C234
47p
D31
MA111
R193
10k
F1
KAB
2402322NA29
R217
470
C354
0.001
1
2
3
4
5
6
7
8
IC28
TC7W53FK
SPCN
AFVI
DC SW
RX SIGNAL
C445
0.022
C446 820p
C447
820p
R363
100k
R364
100k
R365
39k
R368
390k
1
3
4
5
2
IC31
TC75S51F
R369
180k
C357
47
T5C
R5C
HV
SENC
DTMF DECODE
C242
4.7
C257
0.1
C244
0.001
INPUT
1
NC
2
PD
3
OSCO
4
OSCI
5
NC
6
VSS
7
LOADB
8
SD
9
ACK
10
STD
11
EST
12
NC
13
VDD
14
IC17
LC73872M
C246
0.001
C384
0.001
R201
2.2k
C385
0.1
C386
47p
L45
1.8
µ
H
R225
100k
C247
10
C243
47
C448
0.047
R367
1.5k
C450
0.1
S5C
DDST
DT
A
C
DTPD
SDEC
T
ONE
DTSD
RX SIGNAL
DUSE
Q41
DTC144EUA
7
6
5
IC20B
NJM2904V
R218
39k
R273
22k
R274
22k
R275
22k
C348
0.1
C351
0.1
Q43
2SC4081 R
R312
22k
R313
33k
R314
33k
R315
33k
R316
2.7k
C394
0.018
C395
68p
C350
0.01
C352
0.039
C349
0.0068
C396
1
C443
0.001
TX SIGNAL
R276
47
D34
MA8062-M
R325
10k
R362
6.8k [H]
8.2k other
C449
0.1
C393
1
C353
0.001
CTCS
DSIN
DSIN
RESET
XRXD
XTXD
DETECT
VCC
AFO
UNIVERSAL
CONNECTOR
MIC
MICE
PTT
R279 1k
R278 1k
R280 1k
C356
47p
R285 10k
R192
100k
R277 1k
1
2
3
4
5
6
7
8
D30
MA8062 M
R284
1k
C355
0.001
C451
0.1
C452
0.1
R375
4.7k
D38
MA111
9
8
7
6
5
4
3
2
1
MP6
R380
1k
R330
4.7
AFOUT
XRXD
MD2
XTXD
RES
SPCN
BATTERY
HV
GND
BDET
C359
0.001
CP5
CP3
CP4
C358
470p
R333
100k
L49
L56
BLM21P300SN1D [F41G] only
except [IS]
except [IS]
1
µ
H
BDET
D35
MA8062-M
1
2
3
4
5
6
7
8
IC25
TC7W53FK
D36
MA8062-M
R346
1.2k
R347
1.2k
R348
1.2k
ADSL
AN1
TMPS
AF VR
C414
0.1
VCC
VCC
9
8
7
6
5
4
3
2
1
J3
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
O
G
I
To optional unit
To optional unit
C463
47p [F41G] only
R366
82k
C398 0.0047
R48
10k
IC19
TC7W53FK
S1
EC10SP16-47
VOXT
VOX
1
3
4
5
2
IC18
TA75S01F
R206 100
R208
15k
R209
330k
R210 390k
R211
1.2k
C249
0.018
C250
470p
C248
0.018
D29
1SS355
R207
22k
C251
2.2
C252
470p
C253
0.001
R212
1.8M
VOXI
[F40G] only
DS3
DS3
LCD
LNJ310M6URA
DS4
DS4
LNJ310M6URA
NC
1
2
3
4
5
6
7
8
9
40
J2
DS2
LNJ310M6URA
R8
560
DS13
LNJ310M6URA
DS5
LNJ210C6ARA
R13
330
Q4
DTC144TE
Q3
DTC144TE
Q1
2SC4116
R2
1.5k
R1
3.3k
R3
22
R5
820k
R6
390k
C20
47p
C2
0.1
C3
0.1
R4
820k
C22
0.1
D7
D6
C1
0.1
C4
1
C23
1
C7
DS10 EDMMUD1FA0
1
C9
1
C8
1
R18
100k
C10
1
C11
1
C21
1
R17
100k
F3
F2
S5
S4
F1
D5
D4
D3
D2
D1
D0
RDB
WRB
RS
RESB
VCC
S3
F0
KS4
S2
D1
MA111
1
2
3
4
5
6
7
8
9
10
IC1
TC74VHC373FT
Q5
DTC
144TE
R14
100k
R11
3.3k
KS2
KS3
Q2
2SC4116
C18
47p
S101
S104
C13
47p
DS8
LN1371G-
[GT] only
DS9
LN1371G-
[GT] only
DS14
LN1371G-
[GS] only
DS15
LN1371G-
[GS] only
C12
47p
D2
MA111
S102
S105
S103
S106
S110
S111
DS6
LN1371G-
[GT] only
DS7
LN1371G-
[GT] only
DS11
LN1371G-
[GT] only
DS12
LN1371G-
[GT] only
S112
S16
S109
S12
S108
S11
KS0
KS1
C15
47p
S107
S10
R9
220
C14
47p
R10
1.5k
D3
MA6S121
MIC+
PTT
INT SP
SP+
MC1
EM-140
CP2
CP1
KR0
KR1
KR2
KR3
S1
SP1
PTT
C19
0.1
C6
1
D4
MA111
C26
0.1
R7
560k
DS1
LNJ310M6URA
C17
47p
PTT
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
J1
W5
D6
D7
+5V
GND
SP+
MIC+
KR3
KR2
KR1
KR0
VCC
RESB
GND
RS
WRB
RDB
D1
D2
D3
D4
D5
PTT
FRST
D0
SPCN
GND
D6
D7
+5V
GND
SP+
MIC+
KR3
KR2
KR1
KR0
VCC
RESB
GND
RS
WRB
RDB
D1
D2
D3
D4
D5
PTT
FRST
D0
SPCN
GND
FRONT UNIT
PTT
SP+
SPCN
MIC+
KR3
KR2
KR1
KR0
KS0
KS1
KS2
KS3
11
12
13
14
15
16
17
18
19
20
NC
VR2
VR1
V
OUT
VEE3
VEE2
CAP+
CAP
–
VEE
VDD
PMODE
VSS
OSC1
OSC0
D7
D6
D5
D4
D3
D2
D1
D0
RDB
WRB
SCL
P/S
M86
M/S
RS
CSB
RESB
VS/TE
V4
V3
V2
V1
V0
NC
NC
10
20
21
31
11
12
13
14
15
16
17
18
19
22
23
24
25
26
27
28
29
30
32
33
34
35
36
37
38
39
IDCIN
VCC
PHP
PLL
T5V
RFIN
VCOS
R5V
R5V
MIXIN
RXIN
TXFO
MSKGS
MSKIN
RSSI
S5V
RXDT
DUSE
R5V
XOUT
CTCSS
VIN2
A
+5V
+5V
VCC
AFOUT
BIAS
MICI
CPU5V
CPU5V
0.1
SPCN
W3
33k
0.001
47p
10k
Q6
IC2
TA75S01F
CPH3403
Q7
CPH3403
470k
Q8
2SC4081
Q9
DTC144EUA
100k
470k
INT MIC
C30
C29
0.001
R12
C16
C24
0.01
C28
0.01
C27
270p
C25
R23
R20
R21
R22
R25
180k
R26
15k
R27
12k
R24
47k
1
5
3
4
2
C
B
15.6 MHz 880 mVp-p
RX: 4.9V
TX: 0V
RX:0.1V
TX: 4.6V
RX: 5.0V
TX: 0.8V
RX: 0.8V
TX: 5.0V
0.9V
RX: 0.4V
TX: 5.0V
RX: 5.0V
TX: 0V
5.0V
5.0V
5.0V
7.5V
Note
[
GT
]: IC-F40
GT
/F41
GT
[
GS
]: IC-F40
GS
/F41
GS
INT SP: 0V
EXT SP: 4.4V
13.1V
SQL CLOSE: 0V
SQL OPEN : 5.0V
RX: 0V
TX: 5.0V
LED OFF: 0V
LED ON : 5.0V
5.0V
10.3V
5V
f =41 kHz
0V
RX: 0V
TX : 2.7V
RX: 0V
TX : 2.2V
INT SP : 0V
EXT SP: 4.8V
Explanatory notes
COMMON
LINE
+B LINE
TX LINE
RX LINE
12 - 1
SECTION 12
VOLTAGE DIAGRAM