Icom IC-F41GS Servise Manual page 38

SECTION 11 VOLTAGE DIAGRAM
DS10 EDMMUD1FA0
LCD
DS3
LNJ310M6URA
DS4
LNJ310M6URA
C21
1
C11
1
C7
1
C9
1 R18
100k
C10 C8
1 1
f =41 kHz
5V
0V
R17
100k
S5 S4 S3
F3 F2
S110 S103 S102
DS11 DS6
LN1371G-
LN1371G-
[GT] only
[GT] only
DS12 DS7
LN1371G- LN1371G-
[GT] only
[GT] only
S111 S106 S105
S112 S109 S108
S16 S12 S11
INT SP
CP1
SP1
C17
47p
CP2
PTT
S1
PTT
R23 10k
INT MIC
Q8
MC1
EM-140 2SC4081
R12 C25 C16
33k 47p 0.001 R21
R22
100k
470k
Q9
DTC144EUA
INT SP : 0V
EXT SP: 4.8V
FRONT UNIT
11 - 1
R13 R8
330 560
13.1V
DS2
DS13 DS5
LNJ310M6URA
LNJ310M6URA LNJ210C6ARA
J2
SQL CLOSE: 0V
SQL OPEN : 5.0V
5.0V DS1
LNJ310M6URA
10.3V
Q3
DTC144TE
C19
Q1
R6 0.1
390k
C6 2SC4116
1
R7 Q4
560k R1
DTC144TE
D4 R5 3.3k
C26
MA111 820k R3 R2
0.1
22 1.5k
C20
47p
C3
C1
R4
C4 C23 820k 0.1
0.1
C2
1 1 RX: 0V
0.1
TX: 5.0V
C22
0.1
D7
D6
D5
D4
D3
D2
D1
D0
RDB
WRB
RS
RESB
VCC
S2
F1 F0
D1
MA111
KS4
IC1
S101 TC74VHC373FT
C18
47p
R14
100k
DS14
KS3 LN1371G-
[GS] only
S104
DS8
Q5
C12 LN1371G-
47p
[GT] only DTC
LED OFF: 0V 144TE
LED ON : 5.0V
D2 DS9
MA111 LN1371G-
[GT] only
KS2
DS15
LN1371G- Q2 R11
[GS] only 3.3k
C13
2SC4116
47p
S107
R10
R9
220 1.5k
KS1
C14
47p
D3
S10
MA6S121
KS0
C15
47p
KR0
KR1
KR2
KR3
PTT
SP+
MIC+
W3
IC2 C29 R26
C28 0.001 15k
TA75S01F
0.01
5
Q6 1
4
CPH3403
3 C30 R27
R25 2 0.1 12k
C27
180k
270p
R20 RX: 0V
TX : 2.2V
470k
Q7
R24
CPH3403
47k
SPCN
C24
RX: 0V
0.01
TX : 2.7V
Note
[GT]: IC-F40GT/F41GT
[GS]: IC-F40GS/F41GS
R60
100k
R294 47k
To optional unit
OPT1 J1
1 30
2 29
3 28
4 27
5 26
6 25
7 24
8 23
9 22
10 21
11 20
12 19
13 18
14 17
15 16
To optional unit
OPT2 J2
1 30
PTOT 2 29
3 28
4 27
5 26
6 25
7 24
SIG2 8 23
OPT21 9 22
OPT22 10 21
OPT23 11 20
R64 12 19
FCLR OPV23 47k 13 18
14 17
R65
15 16
47k
MSKE OPV22
R66
47k
RGS2 OPV21
J1
J3
W5
1
26 GND GND
+5V
2
25 +5V +5V
D7
3
24 D7 D7
D6
4
23 D6 D6
D5
22 D5 D5 5
D4
6
21 D4 D4
D3
7
20 D3 D3
D2
19 D2 D2 8
D1
9
18 D1 D1
17 SPCN SPCN 10
RDB
16 RDB RDB 11
WRB
12
15 WRB WRB
RS
14 RS RS 13
13 GND GND 14
RESB
12 RESB RESB 15
VCC RX: 4.9V
11 VCC VCC 16
TX: 0V
KR0
10 KR0 17
KR0
KR1
9 KR1 KR1 18
G
KR2
8 KR2 KR2 19
PTIN
KR3
7 20
KR3 KR3
FRST
C231 C310
6 FRST FRST 21
47p
0.0047
5 MIC+ MIC+ 22
D0
R289
4 D0 D0 23
100k
3 SP+ SP+ 24
R323
2 PTT PTT 25 100k
1 GND
GND 26
CH SELECT
S1 C234
47p
EC10SP16-47
3
1
C1
1 4
2
2 5
4
C2 6
8
C430
470p
C365 C366 C367 C401
47p 47p 47p 47p
R217
470
INT SP SW
R193
AF VR
10k
POWER
IC28
C354
F1
C414
0.001
KAB TC7W53FK
0.1
2402322NA29
D31
8 1
MA111
7 2
6 3
5 4
R330
R192
4.7
IC19
100k
TC7W53FK
R380 8 1
R375
1k
7 2
4.7k
C356
6 3
47p
5 4
D38
MA111
UNIVERSAL INT SP: 0V
R285 10k
EXT SP: 4.4V
CONNECTOR MP6
9 AFOUT
AFO
8
VCC
7
C355
DETECT
6 0.001
R277 1k R325
MICE
R278 1k
5 10k
RESET
4
R279 1k
XRXD
3
XTXD
2
R280 1k
MIC
1
PTT
C451 C452
D30 R284
0.1 0.1
MA8062 M 1k
D34 D35
MAPD
MA8062-M MA8062-M
IC25
R347
1.2k
TC7W53FK R348
R346
1.2k
1.2k
8
1
7 2
6 3
5 4
L56
BLM21P300SN1D [F41G] only
CP3
HV
C358
CP4 C359
BATTERY R333
GND 0.001 470p
100k
except [IS] except [IS]
CP5
BDET
L49
1 H
BUSY VCC
AUX
T5V
SIG1
S5V
OPT11
+5V
OPT12
C424
R336 C105
OPT13 R54
4.7 27k 0.001
OPV11 APST 100
R295 47k OPV12 DIN C104
OPV13 RGS1 R361 56k 0.1
BIAS C106
0.1 IC2
R296
TC75S51F
47k R55 22k 5
SPLO 1
4
C107
3
FRCN 47p
R53
2
+5V
220k
BEP1
LVIN
D10
PLRS
DAN202U
AFON
C108 R58 1k R57
47p R59 2k 2k
SCK
D
SO
PLST
ULCK
F
C95
C91
SO 47p
0.1
SCK L29
154nH
R67
100k R63
56
REM
C89 C88
C90
BEP2 6p 6p 0.001
VCOS
+5V
S5V
C
R5V
DSIN
E FI2 SFPCA450KE4A
W/N FILTER
2 1
D15 3
DAN202U
FI3 SFPCA450KG1A
1 2
CCS
CIRQ 3
R77
SI
15k
R73 R80
R78 R79
100k
D13 22k 12k 22k
DAP202U
RMUT
C110
R75
R83
[F40G] only 0.1
100k
39k
MMUT
RX:0.1V
D14 Q16
DAP202U TX: 4.6V
DTA144EUA
S5V
C216 C397
A
0.047 0.0047
R168
R187 39k
DSIN 4.7k
C227
0.033
Q27
PTOT R189
470 2SC4213
R186
68k
C230
10
Q45
R188
UN911H
100k
VCC
SPCN
L47
1.0 H
MCOT
MCIN
AFOUT
PTIN C425
0.1
CB10
R190
CB11 100k
C416
C427
CB12
Q46 0.1
47p
CB13
R298
DTC144EUA
100k
VCC
S5V
+5V
R5V
T5V
AFVI
Q29
2SA1362
C237
22
HV C235
C238
R195
22
22
4.7k
C357
47
RX: 0.8V
RX: 5.0V
DC SW
TX: 5.0V
TX: 0.8V
RX SIGNAL
R363
IC31
100k
SPCN R365 R366
TC75S51F
39k 82k
R276
47
C445 R364
0.022 100k C447
C353
820p
0.001
RES
XRXD
R369
XTXD
180k
R362
MD2 6.8k [H]
8.2k other
D36
MA8062-M
TX SIGNAL
ADSL
CTCS
AN1
DSIN
R206 100 R207 C252
C251
22k 470p
R210 390k 2.2
VOX
TMPS C248 C249
D29
0.018 0.018 5
VOXI 1
1SS355
4
3
C250
R209 IC18 R212
470p
R208 R211 2 C253
330k
TA75S01F 1.8M
15k 1.2k 0.001
BDET
VOXT
15.6 MHz 880 mVp-p
REF
R48
D
R52 100 10k
R50 C100 H
LV
4 3 1k 0.001
X1 CP7 Q14
R337
CR-667
1k 2SK880
15.600 MHz
C103 C102 FLAC N PLL
C101 R49
R51 0.0047
10p C463
0.001 47k
10k
47p [F41G] only
1 2
C109
R46
0.1
12k
L25
R43
1.8 H
C99 47p 1 VDD 20
2k
CLOCK
2 TEST 19
DATA
3 LOCK 18
STROBE
4 IC1 RF 17
C74
VSS R45 R44
5 RN 16
SA7025 0.047
RFIN 10 3.9k
6 VDDA 15
RFIN
7 DK-T PHP 14 C78
VCCP
8 PHI 13 R47 0.001 C76
REFIN
9 VSSA 12
C98 20K 100p
RA C77
10 PHA 11 C80
0.01 AUXIN 0.33
0.1 LO
C81
R377
C83 R61
R62 L26 47p C79
L28 120k R
0.01 680k
1.2k 0.001
1.8 H 1.0 H
10
C82
3 MULTI
10p
C87 L27 C85
C86
C84
3p 0.82 H R378
5p 4p Q15
4p 47k
2SC4081
R90 R91
R89
IF 47 10k
1.5k CDBCB4
D16
IC3 TA31136FN C124
R81 DAN202U C125 R96
10
4.7 R82 100p 2.2k
1 16
15k
OSCIN MIXIN
2 GND 15
OSCOUT
C113 3 14
C123
MIXOUT N-REC
4 N-DET 13
0.01
VCC 100p
5 12
C112 IFIN RSSI
R86
6 11
150k 470p DEC IFOUT
7 10
FILOUT QUAD
8 9
FILIN AFOUT
R88
L48
22k
R342 C114 C117
1 H
3.3k 0.1 Q17 0.001 C118
C115
0.001
0.001
2SC4081
R87 C111
R94
R85 0.001
820
1.2k
100k
R92
R93
47k C116
47k
470p
R379
R317
C399 10k
470k
C217
0.0047
IC10
0.1
R172 C194
AUDIO
68k 0.0047 TA75S01F
PROCESSOR
C398 0.0047
C226
R183 1.5k R175
0.047 5
5.6k
1
C219 120p
4
C218
C225 0.047 3
0.0047
AF FIL 2
R173
C215
R184
150k 0.1
R288
12k
C232 0.0022
10
C455
C207
0.1
0.1
C203
R166
C224
C213
0.0022 10
0.1
R370 4.7
R185 C
R371 47k
C214 C208 1
120k
Q47
B 22k 0.1
4.7
2SC4081 R
MCOT R180
15k
MCIN
C456
R373 R372
C233 0.1
4.7k 33k
0.1
C426
C195
0.1 RX: 5.0V
RX: 0.4V 5.0V
470p
D40
TX: 0V
TX: 5.0V 5.0V
MA742
VCC
Q31
R203
2SA1362
10k
5.0V
Q32
R198
REG
2SB1132
R196 10k
Q30
10k 6 5 4 7.5V
Q33
R200
2SA1362
IC12
10k
XP6501
R199 AN8005M
C239 C241
4.7k
0.01 0.01 R202
1 2 3 1k
C240
R197
O
0.01 C254 I
G
4.7k
4.7
R201 C246
C384 C242
C243 C244
L45 2.2k 0.001
4.7
0.001 47 0.001
1.8 H
0.9V
IC17
DSIN
LC73872M
C450
0.1
1 VDD 14
C446 820p INPUT
2 13
NC NC
3 EST 12
PD
4 11
OSCO STD
5 10
5 R367 OSCI ACK
C385
6 9
1 1.5k 0.1 NC SD
4 7 8
VSS LOADB
3 R225
C257
C386
2 100k
C448 0.1
47p DTMF DECODE
0.047
R368
390k
C449 Q43
R312
0.1
22k R314
R315 2SC4081 R
33k 33k C443
R316 0.001
2.7k
C393 R313 C395
C394 R218
1 68p
33k 0.018
39k
C396
1
RX SIGNAL
IC20B
R273
NJM2904V
22k
5
R274
R275
7
22k 22k 6
C348
C351 0.1
0.1
C352
0.039
C349
C350
0.0068
0.01
C34
DUSE
0.1
MAIN UNIT
Q41
DTC144EUA