Icom IC-F3GS, IC-F3GT service manual Board Layouts, General and EIA/TIA Versions Except W/N-TYPE

Page 26

SECTION 9 BOARD LAYOUTS

9-1 GENERAL AND EIA/TIA VERSIONS (EXCEPT W/N-TYPE)

• MAIN UNIT (TOP VIEW)

DS2

C255

DS1

C293

R34

R35

 

C49

R185

C233

R186

C64

C55

R45

IC1

 

R151

R264

 

 

Q34

 

 

 

C234

C46

C295

R249

 

 

 

 

C294

C63

 

 

R89

L13

 

 

 

 

 

C54

R90

C56

 

 

 

 

Q10

 

 

 

 

 

 

 

C290

C51

 

 

 

 

 

 

 

 

 

 

C300

 

R208

 

R175

 

 

 

 

 

 

 

C211

 

 

 

C112 X3

R83C113

 

 

 

 

 

R134

C159 Q20

C160 Q19

 

 

 

 

IC6

 

 

 

 

 

X3

 

 

 

 

Q18

 

 

C156

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R135

 

 

 

 

 

 

 

R82

 

C119

 

 

 

R88

 

C20

 

R244

 

C116

 

C120

C122

 

 

L26

C21

 

 

 

 

 

 

 

 

R86

C121

 

 

 

C303

 

 

 

 

IC2

 

 

R87

 

 

 

 

 

 

 

 

 

 

R85

C118

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R253

 

C115

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C111

 

 

 

 

 

 

 

 

 

L28

C19

R255

 

L6

 

 

 

 

 

 

 

 

 

 

 

R81

R80

 

Q14

 

C117

 

L7

 

C22

C280

 

 

 

 

R79

 

R84

 

C24

 

 

 

 

 

 

 

 

C15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q3

 

 

 

 

 

 

 

 

 

 

R13

 

 

 

 

 

Q2

 

 

 

 

 

 

R12

 

 

 

 

 

 

 

 

 

 

R15

C26

R11

R10

C23

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R14

C25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C283

 

A

C282

 

 

R142

C14

L5

Q1

 

C289

 

 

C50

 

R30

R31

 

 

 

 

C215

R44

R169

R125

C212

R168

 

 

C148

R98

 

 

 

 

Q11

R257

C286

C301

 

C131

D3

 

 

 

 

 

 

 

 

R17

 

IC4

R97

D4

 

 

 

R16

R177

C217

C133

R105

C134

C136

R114

C124

R176

R109

R108

 

C243

C75

R251

R93

R54

 

 

 

 

 

 

R7

C13

 

 

 

 

 

C17

 

R9

 

R5

 

 

C179

Q37

 

 

 

 

 

 

C251

 

D33

 

L32

 

 

 

 

 

 

 

 

 

R162

 

 

 

R3

W7

 

 

 

 

 

 

 

R210

C10

R163

C252

 

D32

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

 

R161

 

 

 

C205

 

 

 

 

 

 

 

 

C213

R107

 

C214

R113

C137

R115

C135

R117

 

 

R116

IC3

 

R53

R52

C73

D1

C5

C256

DS3

Q25

R204

R205 R155

J6

R170

J6

C128 R112

MC1

 

 

D12

C95

C96

 

 

 

R67

R66

 

 

D27

 

C299

R174

Q31

 

 

 

D11

C92

 

C90

L18

 

R61

 

R64

 

C93

 

R65

R222

R62

C84

 

C85

D10

L15

C52

C4

 

D2

 

 

 

 

 

R57

L22

 

C2

C1

 

 

 

 

 

 

 

R1

 

 

D8

C78

 

 

 

 

 

D9

C81

 

 

 

 

 

 

 

9 - 1

Image 26
Contents VHF FM Transceivers Repair Notes IntroductionOrdering Parts Table of Contents Section Specifications EIA/TIABottom View Inside ViewsMain Unit TOP View Removing the Chassis Panel Disassembly and Option InstructionsDisassembly Instruction Removing the Main UnitOptional Unit Installations Circuit Description Receiver CircuitsTransmitter Circuits Power Supply Circuits Voltage Line PLL CircuitPort Allocations Output Expander IC IC10Adjustment Procedures Preparation¥ JIG cable Top view PLL Adjustment Software Adjustment TXFSoftware Adjustment Parts List Main UnitVariable Thermistor NTCCM20124AG473J-T Tantalum ECST0JY106R Chassis Unit Chassis Parts Mechanical Parts and DisassemblyAccessories IC-F3GS parts Diodes SEMI-CONDUCTOR InformationTransistor and FET’S Board Layouts General and EIA/TIA Versions Except W/N-TYPEMP6 Main Unit Bottom ViewIC1 ETS/CEPT VersionMP5 VHF FI1 BC-137 Optional Desktop Charger Informasion Parts ListDisassembly Information ConvenientVoltage Diagram Board LayoutBlock Diagram Option UnitVoltage Diagram BU4066BCFVBand of ETS/CEPT version N-type DTA144EU Section Voltage Diagram Avref Vtref Toned Tonem AvccPage 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan UHF FM Transceivers IC-F4GTIC-F4GS Preparation PLL Adjustment Software Adjustment Power supply requirement APC IC3A NJM3403AV Disassembly and Option Instructions Optional Unit Installations 2ND if and Demodulator Circuits RF signal From PLL Driver PLL Circuit Power Supply Circuits Voltage Line Resistor R132PTT Adjustment Procedures Screen Display Example DC Power Cable Connections L405 L11 Powerlo BPF T1 NJM3403AV-TE1 IC4 Resistor ERJ2GE Thermistor NTCCM1608 4LH 223KC Ceramic ECUE1H470JCQ ECEV1CA470SP Other Ceramic ECJ0EB1E471K Band MHz band MHz and H-band IC-F4GS parts DTA144 EU DTC144 EE DTC144 EU DTC144 TU LOW Band DS1FI1 440-470 MHz Band Except W/N-TYPE Icom 470-500 MHz and High Bands B5542B C308 Q19 B5688B BC-137 Optional Desktop Charger Informasion Voltage Diagram Type Type of GEN Type of GEN and EIA/TIA version NJM3403AV M1-band of GEN and EIA/TIA version G W-type of GEN Type 2SC3585 R44 Q403 2SC5107 O Band of ETS/CEPT version N-type M1 440-470 MHz-band Page 13713IZ-C1U
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