Icom IC-F31GS Servise Manual page 32

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
R20
33k 47p 0.001 R21
470k
R22
100k
470k
Q9
INT SP : 0V DTC144EUA
EXT SP: 4.8V
FRONT UNIT
11 - 1
R8
R13
560
330
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
R6
0.1 Q1
390k
C6
2SC4116
1
R7 Q4
560k R1
D4 R5 DTC144TE
3.3k
C26
R3 R2
MA111 820k
0.1 1.5k
22
C20
47p
C3
C1 R4
C4 C23 0.1
0.1 820k
1 C2 RX: 0V
1
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
LN1371G-
KS3
[GS] only
S104
DS8
C12 Q5
LN1371G-
47p
[GT] only
DTC
LED OFF: 0V
144TE
LED ON : 5.0V
D2 DS9
MA111 LN1371G-
[GT] only
KS2
DS15
R11
LN1371G- Q2
3.3k
[GS] only
C13 2SC4116
47p
S107
R9 R10
220 1.5k
KS1
C14
47p
D3
S10
MA6S121
KS0
C15
47p
KR0
KR1
KR2
KR3
PTT
SP+
MIC+
W3
C29 R26
IC2
C28 0.001
15k
0.01 TA75S01F
5
Q6 1
4
CPH3403
3 C30 R27
R25 2 12k
C27 0.1
180k
270p
RX: 0V
TX : 2.2V
Q7
R24
CPH3403 47k
SPCN
C24
RX: 0V
0.01
TX : 2.7V
Note [GT]: IC-F30GT/F31GT
[GS]: IC-F30GS/F31GS
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
26 GND GND 1
+5V
2
25 +5V +5V
D7
3
24 D7 D7
D6
23 D6 D6 4
D5
5
22 D5 D5
D4
6
21 D4 D4
D3
20 7
D3 D3
D2
8
19 D2 D2
D1
9
18 D1 D1
17 SPCN SPCN 10
RDB
11
16 RDB RDB
WRB
12
15 WRB WRB
RS
14 RS RS 13
14
13 GND GND
RESB
15
12 RESB RESB
VCC RX: 5.0V
11 VCC VCC 16
TX: 0V
KR0
17
10 KR0 KR0
KR1
18
9 KR1 KR1
G
KR2
8 KR2 KR2 19
PTIN
KR3
7 20
KR3 KR3
FRST
21 C231 C310
6 FRST FRST
47p
0.0047
5 MIC+ MIC+ 22
D0
23 R289
4 D0 D0
100k
24 +5V
3 SP+ SP+
R323
2 PTT PTT 25 100k
1 GND GND 26
CH SELECT
S1 C234
EC10SP16-47 47p
3
1
1 C1 4
2
2 5
4
C2
6
8
C365 C366 C367 C401
47p 47p 47p 47p
R217
470
INT SP SW
R193
AF VR
10k
POWER
IC19 C354 C414
F1
0.1
KAB 0.001
BU4053BCFV
D31 2402322NA29
MA2S111 1 16
Y1 VDD
2 15
Y0 Y
3 14
Z1 X
4 13
Z X1
C356
R376 5 12
Z0 X0
47p
1k 6 11
INH A
R192
R330 7 10
100k VEE B
4.7 8 9
VSS C
D38
MA2S111
R375
INT SP: 0V
UNIVERSAL
4.7k
EXT SP: 4.3V
CONNECTOR MP6
R285 10k
9 AFOUT
AFO
8
VCC
7
DETECT C355
6
R278 C413 0.001
MICE R277 1k R325
1k 0.1
5 10k
RESET
4 R279 1k
XRXD
3
XTXD
2
R280 1k
MIC
1
PTT
C451 D30 R284 C452
47p MA8062 M 1k 0.1
C428
0.1
D34 D35
C429
MA8056 M MA8056 M
47p
+5V
CP3
HV
CP4 C359 C358
GND
BATTERY 0.001 470p
except[IS] except[IS] except[IS]
CP5
BDET
C318
L53
0.01
1 H
BUSY VCC
AUX
T5V
SIG1
S5V
OPT11
+5V
OPT12
C427
OPT13 R341 C105
R54
4.7
27k 0.001
OPV11 APST 100
R295 47k OPV12 DIN C104
0.1
OPV13 RGS1
C106
0.1 IC2
R296
47k R55 22k 5
1 TC75S51F
SPLO
4
C107 3
FRCN 47p
R53
2
+5V
220k
BEP1
LVIN
D10
PLRS
DAN202U
AFON
R58 1k
R57
2k
SCK
D
SO
PLST
ULCK
F
R307 C95 C96
100k C108 R59 C91 47p 47p
47p 2k 47p
R67
100k
C439
0.001
REM
BEP2
VCOS
S5V
C
R5V
FI2 SFPCA450KE4A
W/N FILTER
2
E 1
D15
3
DAN202U
FI3 SFPCA450KG1A
SCK
2
1
SO
R347
CCS
3
4.7
CIRQ
SI
R77 R78 R79
R73
15k 22k 12k
D13 100k
DAP202U
C110 C423
RMUT 0.1 0.1
R75
100k
MMUT
Q16
D14
DTA144EUA
DAP202U
RX: 4.6V
TX: 0.1V
S5V
C229 C228
47p 470p
C216
A
0.047
R168
39k
DSIN
R187 4.7k
Q27
PTOT R189
470
2SC4213
R186
68k
C230
10
+5V
Q45
R188
UN911H
100k
VCC
VCC
SPCN
L47
MCOT 1.0 H
MCIN
AFOUT
C432
PTIN
0.1
CB10 R190
CB11
100k
C421 R298
CB12 0.1
Q46 100k
CB13
DTC144EUA
VCC
S5V
+5V
R5V
T5V
AFVI
Q29
2SA1362
VCC
HV C235
22 R195
4.7k
C236 C237 C238
22 22 22
+5V
RX: 0.8V
RX: 5.0V
DC SW
TX: 5.0V
TX: 0.8V
RX SIGNAL
S5V
R363
IC31
100k
SPCN R365 R366
C445 TC75S51F
39k 82k
0.022
R276
47
R364
C447
100k
C353
820p
0.001
RES
XRXD
R369
XTXD 180k
MD2 R362
5.6k
TX SIGNAL
D36
MA8056 M
S5V
R5V
DSIN
R206 100
R207 C252
C251
22k 470p
R210 390k 2.2
VOX
C248 C249
0.018 0.018 5 D29
MICO 1
MA2S111
4
3
C250
HV
R209 R212
470p
R208 R211 2 IC18 C253
330k
C357 1.8M
15k 1.2k 0.001
47 TA75S01F
BDET
VOXT
15.6 MHz 970 mVp-p
REF
R48
R52 100 10k
R50 C100
LV
4 3 1k 0.001
X1 CP7 Q14
C430
CR-667
2SK880Y 0.001
15.600 MHz
C102
0.0047
C103
C101 R49
10p R51
0.001 6.8k
10k
FLAC N PLL
W4
1 2
C109
R46
0.1 4.7k[F30G]
12k[F31G]
L25 R44 R4
1.8 H 6.8k[F30G] 82
C99 47p
1 VDD 20 4.7k[F31G] 1.5
CLOCK
2 TEST 19
DATA
LOCK 18
3
STROBE
4 IC1 RF 17
VSS R45
5 RN 16
RFIN SA7025
6 VDDA 15 10
RFIN
7 PHP 14 C78
DK-T
VCCP
8 PHI 13 0.001 C76
REFIN
C97 9 VSSA 12 100p
C98 RA
C80
47p 10 PHA 11
0.01 AUXIN
0.1 R47
10k[F30G]
20K[F31G] C77
C81
0.1 [F30G]
C83 R61
R62 47p C79
L28 L26 0.22[F31G]
0.01
220k 0.1 [F30G]
1.2k 1.8 H
1.8 H
0.001[F31G]
C82
10p 3 MULTI
C87 L27
C86 C85
1.8 H C84
3p 5p 2.5p
Q15
12p
2SC4116
R90 R91
R89
47 10k
1.5k
IF
D16
R81 DAN202U
4.7 IC3 TA31136FN C124
C125 R9
10
100p 3.
1 16
OSCIN MIXIN
C113 2 GND 15
OSCOUT
0.01 14
R82 3
MIXOUT N-REC C420 0.001 C1
15k 4 N-DET 13
10
VCC
5 12
R80
R86 C112 IFIN RSSI
22k 6 11
82k 220p
DEC IFOUT
7 10
FILOUT QUAD
8 9
FILIN AFOUT
R88
47k C117
C114
C118
R85 0.1 C115 Q17 0.001
C267 0.001 C
330 0.001
2SC4116 0.
0.01 C111
R94
220p
3.3k
R87
R92
3.9k R93
C422 47k C116
47k
0.1 470p
R317
C397 C399 C192
470k C217
0.0047 0.0047 0.0047
IC7A 0.1
R172 R183
NJM2902V
68k 1.5k
C398 0.0047
C227 C226
C225 R175
4
0.033 0.047
0.047 5.6k
3
C219 120p
1
C218
2
0.0047
AF FIL
R184 R173
11 C215
R185
12k 150k
0.1
120k
VAG
C455
0.1
C232 C224
R288 C203
C213
0.0022
10k 0.0022 R166 0.1
R370 4.7
10k R371 47k
C214 C20
22k
0.1 4.
Q47
B
MCOT R180
2SC4116
15k
MCIN
C456
R373 R372
C233 0.1
4.7k 33k
0.1
VAG
MICI
C434
C195
C433
RX: 0V RX: 5.0V 0.1
47p 470p
D46
TX: 5.0V TX: 0V
MA742
5.0V
VCC
5.0V
Q31
R203
2SA1362 10k
5.0V
Q32
R198
REG
R196 10k 2SB1132
10k Q30 7.5
6 5 4
R200 Q33
2SA1362
10k IC12
XP6501
R199
C239 C241 AN8005M
4.7k
0.01 R202
0.01
1 2 3 1k
C240
R197 O
0.01 I
G
4.7k
R201 C24
C242
C243 C244
2.2k 0.0
4.7
47 0.001
0.9V
IC17
LC73872M
C450
0.1
1 VDD 14
C446 820p INPUT
L45 2 13
NC NC
1.8 H 3 EST 12
PD
4 11
C254 OSCO STD
5 10
4.7
5 R367 OSCI ACK
6 9
C385
1 1.5k C384 NC SD
4 0.1 7 8
0.001
VSS LOADB
3
C257
2
C448 C386 0.1
DTMF DECODE
0.0012 47p
R368
R157
390k
22k
C449 R312 Q43
0.1
22k R314 R315
2SC4116
33k
33k C443
R316 0.001
C393 2.7k
R313 C394 C395
R218
1 33k 68p
0.018 39k
C396
1
RX SIGNAL
IC20B
R273
NJM2904V
22k
5
R275 R274
7
22k 22k
6
C351
0.1
C352
0.039
C349
C350
0.0068
0.01
DUSE
MAIN UNIT
Q41
DTC144EUA