Icom IC-F3GS, IC-F3GT service manual Section, Voltage Diagram, Tx 2.19, Tx 4.84, NJM2870D

SECTION 12

VOLTAGE DIAGRAM

AFOUT

AFOUT

DISCIN

DISCIN

VCC

VCC

T5

T5

J5

S5

S5

AXN330C038

CPU5

CPU5

16

SCK

R5

R5

S5

S5

15

OPV1

CPU5

CPU5

17

SI

14

OPV2

18

SO

13

OPV3

19

CIRQ

R5

R5

12

GND

S5

S5

20

CCS

CPU5

11

OPT3

21

REM

Tx: 2.19 V

10

OPT2

Rx: 2.20 V

22

AFOUT

VCC

VCC

VCC

9

OPT1

Tx: 4.79 V

Tx: 2.19 V

2.5 Vp-p

to Optional unit

23

DISCIN

4 Vp-p

C556

Rx: 2.20 V

( a)1 kHz, –1.5 kHz)

Q15

8

SIGOUT

Rx: 0.00 V

(a)1 kHz, 15 mV mic input)

47 P

R97

R115

24

RXMUTE

RMUTE

R177

R95

220 k

120 k

2SB1132 R

7

MOWN

5V

IC3C

1 k

C125

1 M

R503

R507

C212

R98

Tx: 2.20 V

Tx: 2.20 V

10 k

1 k

C135

Rx: 2.21 V

25

BEEPOUT

C132

NJM3403AV

0.0022

0.01

180 k

Rx: 2.20 V

AFON

180 P

6

BUSY

C554

R131

0.0056

10

6

1

14

R114

C137

3.96 V

26

AFONOP

470 P

470

8

7

I/O

VDD

R44

R107

33 k [OTHER]

6

5

2

13

0.033 I

5

AUX

Q17

9

C217

C124

C126

5

C286

R257

R508

3

O/I

CONT.A

12

8.2 k [OTHER] R169

C213 82 k I

22 k H

13

0.027 [OTHER]

27

MICMUTE

BUSY

MMUTE

C663

C134

0.1

0.01

0.0027

0.0022

4.7

1 k

4

O/I

CONT.D

11

10 k H

10 k

2.2

150 k [OTHER]

14

0.012 D

R510

UN911H

I/O

I/O

12

R99

R120

4

MICIN

0.047

R105

R509

IC3B

5

10

R117

R178

PTT

1 k

180 P

6

CONT.B

O/I

9

18 k

68 k

28

VCC

470 [OTHER]

10 k

R176

R93

R94

NJM3403AV

CONT.C

O/I

R505

C214 R113

IC3D

R116

1.5 k

3.3 k

1

2

3

MICOUT

C209

390 H

1 M

R96

7

VEE

I/O

8

1 k

0.033 68 k

1 k

D

3.9 k

27 k

NJM3403AV

29

5V

0.1

C

R108

47 k

IC4

C128

2

PTTOUT

R137

C133

R506

R168

R170

C136

R159

D26

180 k

BU4066BCFV

1

30

GND

100

0.1

R109

C665

C674

L441

1 k

R112

10 k

10 k

0.0056

100 k

DAN202K

1

PTTIN

47 P

C672

1.0 H

1 M

C147 C154

R130

10 k

47 P

C562

C563

R516

47 P

R100

C129

R145 C139 R121

C1

0.1

10

100 k

47 P

47 P

15 k

2.2 k

15

1 M

0.1

1 k

0.1

VOLIN

R104 100 k

VOLIN

VOLIN

Q16

VOLOUT

XP650

C223 C224

VOLOUT

VOLOUT

VOLOUT

0.01

0.01

AFOUT

AFOUT

AFOUT

AFOUT

AFONOP

MIC

VCC CPU5

MICIN

MICOUT

C148

C215

MMUT R5C

RMUT

TONE

CTCSS SIGOUT

TONE

R 1.4 Vp-p ( a) 1 kHz, –1.5 kHz)

AFON

0.01

BEEPOUT

0.1

5V

T5

R5

S5

R125

R171

T

2.3 Vp-p ( a) 1 kHz, 15 mV mic input)

SP1

W1

27 k

47 k

J6

OPC-963

C164

K036NA500-47

BM028-ASRS-TF

2

1

SP

0.001

C677

1

2

5.01 V

Q18

470 P

4.99 V

SPEAKER

2SB1132 R

R182

VCC

VCC

VCC

NTCCM20124AG473JCT

CPU5

CPU5

CPU5

R5

[OTHER]

L33

C662

S5

IC10

4

5

39 H

CTCIN

0.1

Tx: 0.00 V

R164

R150

R519

C123

Tx: 4.84 V

M62363FP-650C

R135

REMO

Rx: 0.19 V

Rx: 4.97 V

VOUT

VIN

120 k [F4GT] only

470

1 VIN1

VIN8 24

1 k

0.001

R182

10 k

R103

R215

C231

BDET PTT CTCIN CPU5

CPU5 DTMF MTONE CPU5

MC1

C163

T5

T1

2

VOUT1

VOUT8

23

R148

12 k

100 k

0.1

C232

LVIN SD REMO

C566

0.1

TEMPS

KUC3523-040245

0.001

MIC

Q22

Q21

T2

3

VOUT2

VOUT7

22

47 k

C197

C550

MIC

Q19

T3

4

21

47 P

2SA1577 Q

R260

2SA1577 Q

R261

TK11250BM

T4

5

VIN2

VIN7

20

0.1

22

R181

R144

XP6501 AB

VDD

GND

CTCSS

R216

100 99 98 97

96 95 94 93 92 91 90 89 88 87

VOLIN VOLOUT

10 k

10 k

6

5

4

DAST

6

LD

RESET

19

100 k

33 K

AFOUT MIC

VCC CPU5

R133 4.7

IC6

SCK

7

CLK

VDAREF

18

1.08 Vp-p

100 k

P81/AN1 P82/AN2 P83/AN3

P84/AN4 P85/AN5

P86/AN6 P87/AN7

AVREF VTREF

TONED

TONEM AVCC

PE3/SEG52/CL1

SO

8

17

SP

R5

DI

DO

5V

T5

S5

GND CTRL

9

16

R147

X2

C553

Q20

VIN3

VIN6

5

S3

NB

R153

10

15

1

12 k

CR-663

PTT

47 P

R141

R139

470 k

11

VOUT3

VOUT6

14

CD

OUT

2

SWITCH

JPM1990-2711R

4.7 k

4.7 k

DTA144 EU

3

2 1

VOUT4

VOUT5

4

VDD

3

D14

C195

1

2

3

12 VIN4

VIN5 13

NC

VSS

C144

MA77

39 P

NJM2870D

0.001

C196

R146

R102

IC11

12 k

10

C244

C565

470 P

R143

FRQCOM

C193

R101

C194

R152

R154

0.01

47 P

S-80942ANMP-DD6

8 P

1 M

12 P

TP76N00N-15F-10KA-2251

VIN

1

C669

C156

C155

470 k

470 k

R165

DBAL

CTCIN

PB0/AN0

T5C

R5C

S5C

120 k [F4GS] only

DEV

DET

C230

2

47 P

VOL/ PWR

R520 330

VOLOUT

C162

C161

C174

R134

C159

C160

C158

0.1 [OTHER] 10

C236

5V

0.022

3

AVSS

SWITCH

0.01

0.01

22

2.2 k

470 P

0.01

22

0.01 D

0.01

4

TEST

R521 330

VOLIN

MTONE

5

X2

VCC

BDET

DET

TONE

DTMF

REM

NWC

6

X1

5V

C311

IC7

XIN

VSS

0.1 D

CTCIN

CTCSS

ESDA

ESCK

7

OSC1

C282

S5

S5

HN58X2432TI [OTHER]

XOUT

8

R276

OSC2

0.001

A

R142

T5

T5

R220

HN58X2464TI O

R226

RESET

9

RES

R5

R5

10 k D only

10

(VR)

100

330 k

R218

8

1 k

NMI

IC8

VCC

A0

1

CSIFT

11

P20/IRQ4/ADTRG

100 k I

KR0

120 k [OTHER]

5

4

Q42

7

WP

A1

2

SCK

SCK

12

P21/SCK1

HD64

J2

HV

R132

KR1

1

2

6

SCL

A2

3

SI

SI

13

P22/SI1

470

R515

KR2

DTC144EU

5 SDA

VSS 4

SO

SO

14 P23/SO1

HSJ1122-010010

OPT

120 k

KR3

DTMF 2.2 Vp-p

R219

D only

R228

R225

C245

DAST

DAST

15

P24/SCK3

EP10

IC15

3

100 k I

C679

R213

CLIN

16

P25/RXD

EXT.MIC

BLM11B221SB

MIC

BEEP 2.5 Vp-p

Q36

120 k [OTHER]

TC7S66FU

10 k

100 k

0.01

CLOUT

CLOUT

17

47 P D 470

P26/TXD

2SC4116 GR

D only

R232

PLST

18

P27/IRQ0

EP11

R174

R140

S2

2.59 V

Tx: 1.07 V

DTCS

CLIN

1 k

NOIS

19

P17/IRQ3/TMIF

BLM11B221SB

15 k

100 k

UP

DN

JPM1990-2711R

R239

R275

840

R234

PLST

CIRQ

20

P16/IRQ2

CLIN

C248

R221

Rx: 0.07 V

720 mVp-p

BUSY

21

D27

1 k

KS4

4.7 k

mVp-p

22 k [OTHER]

NOIS

CCS

22

P15/IRQ1

C165

0.01

390 k

D only

10 k D

R231

P14

0.001

RB706F-40

IC14 TC7S66FU

68 k I

OPT1

23

P13/TMIG

AFOUT

CLOUT

T5

22 k [OTHER]

CIRQ

OPT2

24

P12/TMOFH

SP

1

2

3

P0

KS3

CTDA2

BUSY

OPT3

25

P11/TMOFL

EXT.SP

KS2

R533 100 k

1

R230

CCS

P50/WKP0/SEG1 P51/WKP1/SEG2

P52/WKP2/SEG3

CLONE

KS1

R5

R532

OPT1

Q31

180 k I

KS0

5

R525

OPT2

4.89 V

DTC144TU

470 k

56 k [OTHER]

CTDA1

P10/TMOW VSS V3

VCC PA3/COM4

PA2/COM3 PA1/COM2

PA0/COM1

R238

IC12A

R211

Tx: 0.03 V

4

3

1 k

R229

OPT3

J3

4

5

6

P1

NJM2904V

560 k I

HSJ1456-01-220A

1 k

R190

120 k

Rx: 1.99 V

CTDA0

C167

C168

C169

R192

2

C250

180 k [OTHER]

V2 V1

22 k

C201

R198

Tx: 3.46 V

47 P

0.001

0.001

22k

8

R199

0.01

26 27 28 29 30 31 32 33 34 35 36 37 38 39

3

Q35

Rx: 1.52 V

R191

1

0.1

18 k

47 k

6

R235

7

8

9

P2

22 k

2

7

2SC4116 GR

680 k

CONT

CTCSS 3 Vp-p

R243

R242

R241

4

5

R203

R202

R227

R240

R197

C200

R224

47 k

47 k

1 M

1 M

1 M

L443 BLM21P300S

C222

47 k

1 k

S1

220 k

0.033

27 k [OTHER]

DTCS

0.1

IC12B

DC

12 k D

0

#

P3

C228

C227

C219

NJM2904V

R200

820 P

0.1 [OTHER]

0.0082

2.8 Vp-p

3.2 Vp-p

0.047 D

C198

47 k

C202

C216

R207

R194

R195

R196

R273

0.01

2.2

Q38

R193

100 k

100 k

100 k

100 k

4

3

47 k

0.1

D only

DTC144EE

100 k

C675

C283

C173

C249

C221

R212

2

R517

L442

R272

S1

C225

C199

470 P

0.001

47 [OTHER]

0.01

0.039

Q405

68 k I

0.1 H

100 k

33 D

JPM1990-2711R

0.0068

68 k

180 k [OTHER]

0.1

D only

4.84 V

XP1213 5

1

DUSE

KS4

R534

78 mVp-p

1.2 Vp-p

1 k

BDET

( a)88.5 Hz CTCSS, –0.35 kHz)

( a)88.5 Hz CTCSS, –0.35 kHz), 3.7 V P-P(DTCS)

BDET

COM4 COM3

COM2 COM1

12 - 1