Icom IC F121S, IC F110S, IC F111S service manual NTCG20

11-2 MAIN UNIT

MAIN UNIT (1)

NOTE

8V

A : High band/ Low band

CPU5V

5V

5V

18k

100k

68k

100k

1M

1M

1M

R110

5.0V

C142

0.001

R101

1k

Q17

47

2SC4116

NTCG20

0.001

Q18

a

R265

R270

R264

R269

R263

R262

R261

C165

0.01

C159

X2

C143

C314

0.01

R98

2.2k

C139 0.1

J1

0.1

R106

R209

2SK880

EP1

R220

C161

CR-741

82k

R84

R83

SCK

SCK

(15.300 MHz)

7.7V

R266

47k

REF

100k

100p

Q19

3.3k

3.3k

C148

SI

SI

C162

0.01

HVC362

C160

R105

C157

100p

2SC4215

C200

CP1

10

RX VCO

C123 A

R82

C119

0.01

C120

470p

C131

0.001

OV12

R267

27k

OV12

47k

R92

9p

0.1

SO

SO

D21

120k

9p/10p

4.7

DAST

R268

10k

DAST

BAL

MA2S111

C158

100p

R104

1.2k

C156

R210

C141

0.001

R100

R89 10k

C132

0.001

R91 A

47k/18k

C125

C133

C124 A

2p/6p

C121

Q13

C118

CIRQ

CIRQ

47p

47k

L25 11n

10p

C163

R222

C164

0.001

R219

100k

D20

100K

L27

6p

6p

2SC4226

0.5p

TX: 3.0V

CCS

CCS

10

10k

1.8∝

C122

R80

RX: 0V

OPT3

OPT3

C130 0.047

C147

6p

TEMP

R96 3.9k

C144

HVC350B

1k

LVIN

47p

OPT2

OPT2

1

R90 470k

R85

R79

b

D16

3.3k

3.3k

DISC

DISC

L29

R97

OPT1

OPT1

15.3 MHz

R95

Q15

1.8∝

1.6Vp-p

1k

10k

TX VCO

C126

R81

C116

0.001

C117

470p

to

DET

DET

XP1214

10p

4.7

R77 10k

Optional

SIGO

SIGO

C149 0.001

C155 47p

C140 0.1

C146

C138

0.001

unit

R103

150k

R93

D37

0.1

R87 C129 10 0.5p

C127 A

0.5p/4p

C114

Q14

C113

4

3

C128

C134

L26 11n

7p

BEEPO

BEEPO

UNLK

1k

MA2S111

4p

6p

2SC4226

0.5p

2

C112

0.1

5

1

BUSY

BUSY

AFONO

AFONO

C151

0.1

IC4

C337

L32 A

C145

47p

L28

HVC350B

C115

4p

L23

R78

R162

MB15A02PFV-1

1.8∝

MA368

0.82∝

1k

1k

SCK

9

8

0.001

15n/18n

D17

220k

D18

TX: 0V

CLOCK

FIN

R86

Q16

SO

10

DATA

LD

7

R211

C299 7p

C298 7p

C350

R291

RX: 3.0V

C357

R161

DTC144EU

VCC

PLST

11

LE

GND

6

56

1

100k

C297

0.1

1k

C111 47p

R271

100

12

FC

DO

5

10p

5V

CP8

MIC

b

47P

47P

47P

13

NC

VCC

4

R292 A

c

C154

C153

C152

14

FOUT

VP

3

MOD

C311 0.001

C310 0.001

15

P

OSCOUT

2

8.2k/12k

TXC

CP9

16

B

OSCIN

1

RXC

3.0V

0.001

R8V

R35

100

C59

5V

5V

CPU5V

R236

1.2k

C309

R38

100k

8V

4.9V

0.01

R39

VCC

8

TX: 0V

47

CDBC450CX24

MEASUREMENT CONDITIONS

C248

0.001

RX: 7.4V

IC5

V+

R237 680k

L35 0.22∝

C306

C308

VOLTMETER

NJM12904V

GND

4p

3p

R40 150

IC1

C67

0.001

C75

10

R36 3.9k

Amplitude(Oscilloscope) : 100 MHz

4

R290 100

R34 120k

C60 0.001

Frequency : 465 MHz

TA31136FN

C304

C305 56p

C307

L33 0.82∝

X1

MAIN

Transmission : 25 W

7p

1

16

10p

OSCIN

MIXIN

DIM

DAST RMUT

MMUT

OPT3

OPT2

OPT1

BUSY

NWC

TMUT

UNLK

PLST

SCK

SI

SO

CIRQ

2

OSCOUT

GND

15

C61

4.9V

C58

R33

UNIT

Q34

FI2

3

MIXOUT

N-REC

14

100p

0.001

150

(2)

540mVrms

4

13

C62

2SC4116

ALFYM450F=K

5

VCC

N-DET

12

(40mVrms at mic terminal)

R116

IFIN

RSSI

82p

Q4

R147

R148

R143

R149

12k

I

O

6

DEC

IFOUT

11

C71 0.1

7

10

2SC4215

d

1k

1k

1k

1k

R122

C167

C168

C169

IC16

8

FILOUT

QUAD

9

3.3k(N/W)

4.7k(N/M)

1.5k

0.1

0.047

0.047

NJM12902V

R44

FILIN

AFOUT

C65

DISC

12

+

14

100k

C348

0.001

R285

13

-

R117

R45

C63

R120 10k

180k

Q5

150k

WIDE:1.0V

47p

FRONT UNIT

NARROW:1.0V

DTC144EU

L10

1.8∝

DET

100

DISC

R115 2.7k

R114

12k

R118 12k

R119 5.6k

R121

4.7k

C185

270p

C69 470p

C70

470p

0.001

R43

47

C64

0.001

R37

J2

J2

GND

DIM

DIM

C181

R125 100k

AFSW

IC5

R129

R46

470

C66

0.001

D36 MA2S111

WIDE: 4.8V

GND

0.1

NJM12904V

NARROW: 0V

b

5

100

TONE

DAST

DAST

R145

1k

TONE

C182

6

+

7

Q37

TONE

R124 4.7k

-

R163

TENC

RMUT

RMUT

0.0056

C184 0.001

DTC144EU

J1

TENC

R144

1k

TENC

10k

8V

NOIS

MMUT

MMUT

R126

NOIS

NOIS

C183

R127

R128

CL0

10k

OPT3

0.1

470

39k

AFO

NWC

OPT3

to

NWC

PTT

mic

OPT2

MICE

TMUT

OPT2

SQIN

RSSI

NOIS

NWC

jack

TMUT

DET

MIC

OPT1

BUS LINE1

GND

UNLK

OPT1

VCC

UNLK

CLI

VCC

BUSY

5V

PLST

BUSY

MOD

T2

T1

PLST

SQIN

CDEC

SCK

SCK

R138

100k

CDEC

CDEC

e

IC14

SDEC

SI

SI

R139

100k

R215

SDEC

SDEC

BU4066BCFV

470

SO

1

14

R164

OV12

SO

I/O

VDD

R183

R185

C178

IC5

27k

OV12

2

13

220k

120k

180p

O/I

CONT.A

NJM12904V

R188

C359

CIRQ

3

12

RSSI

CIRQ

O/I

CONT.D

2

-

4.7k

1

RSSI

4

11

1

I/O

I/O

0.0056

3

CCS

R146

1k

CCS

5

10

C177

R184

+

0.012

IC6

LVIN

CCS

LVIN

TXC

6

CONT.B

O/I

9

33k

R187

2.2k

C179

DET

C283

R231

M62363FP-650C

24

MIC

7

CONT.C

O/I

8

0.001

1

1

TEMP

MIC

TEMP

VEE

I/O

2

VIN1

VIN8

23

R130

VOUT1

VOUT8

BATV

EPTT

EPTT

10k

R186

R112

R111

3

22

BATV

100k

27k

3.9k

TENC

4

VOUT2

VOUT7

21

VIN2

VIN7

RXC

HORNO

HORNO

5

20

RXC

0.001

DAST

6

VDD

GND

19

C170

C175

0.001

R113

2.2k

C180

LD

RESET

AFON

BEEP

BEEP

R133

R134

R135

47

SCK

7

18

AFON

180k

56k

120k

SO

8

CLK

VDAREF

17

DI

DO

5V

PWON

PWON

9

16

5V

0.0047

C173

C174

10

VIN3

VIN6

15

C172

VOUT3

VOUT6

CPU5

8V

8V

0.1

10

BAL

11

14

CPU5

12

VOUT4

VOUT5

13

VIN4

VIN5

GND

AFO

GND

R140

R137

68k

C286

0.01

AFO

R150

R141

R142

1k

1k

1k

100k

C282

0.1

47p

0.1

0.1

0.1

0.001

0.001

0.001

0.001

TEMP

5V

5V

LVIN

CPU5V

C204

C202

C201

C203

C207

C208

C209

C210

CPU5V

OV12

8V

BEEP HORNO EPTT

8V

PWON

AFO

AFON

RXC

BATV

RSSI

MMUT

RMUT

TONE

SIG

REF

BUS LINE2

11 - 2