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Icom IC-F3GT, IC-F3GS service manual UHF FM Transceivers

Models: IC-F3GT IC-F3GS

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Specifications Install Parts list Voltage Diagram RF signal From PLL Driver Accessories Disassembly Instruction Adjustment Procedures PLL Adjustment Power supply requirement

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SERVICE MANUAL

UHF FM TRANSCEIVERS

Page 40 Page 42

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Icom IC-F3GT, IC-F3GS service manual UHF FM Transceivers

Page 40 Page 42

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Contents

VHF FM Transceivers Repair Notes IntroductionOrdering Parts Table of Contents EIA/TIA Section Specifications Bottom View Inside ViewsMain Unit TOP View Disassembly Instruction Disassembly and Option InstructionsRemoving the Chassis Panel Removing the Main Unit Optional Unit Installations Receiver Circuits Circuit Description Transmitter Circuits PLL Circuit Power Supply Circuits Voltage Line Output Expander IC IC10 Port Allocations Preparation Adjustment Procedures ¥ JIG cable Top view PLL Adjustment TXF Software Adjustment Software Adjustment Main Unit Parts List Variable Thermistor NTCCM20124AG473J-T Tantalum ECST0JY106R Chassis Unit Chassis Parts Mechanical Parts and DisassemblyAccessories IC-F3GS parts Diodes SEMI-CONDUCTOR InformationTransistor and FET’S General and EIA/TIA Versions Except W/N-TYPE Board Layouts Main Unit Bottom View MP6 ETS/CEPT Version IC1 MP5 VHF FI1 Disassembly Information Parts ListBC-137 Optional Desktop Charger Informasion Convenient Board Layout Voltage Diagram Option Unit Block Diagram BU4066BCFV Voltage Diagram Band of ETS/CEPT version N-type DTA144EU Avref Vtref Toned Tonem Avcc Section Voltage DiagramPage 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 Resistor R132 PLL Circuit Power Supply Circuits Voltage Line PTT 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 DS1 LOW Band FI1 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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