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Icom IC-F3GT, IC-F3GS service manual Service Manual, Vhf Fm Transceivers

Models: IC-F3GS

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SERVICE MANUAL

VHF FM TRANSCEIVERS

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Icom IC-F3GT, IC-F3GS service manual Service Manual, Vhf Fm Transceivers

Contents

VHF FM TRANSCEIVERS SERVICE MANUALDANGER INTRODUCTIONORDERING PARTS REPAIR NOTESTABLE OF CONTENTS SECTION SPECIFICATIONSETS 300 EIA/TIAMAIN UNIT TOP VIEW SECTION 2 INSIDE VIEWSBOTTOM VIEW 3-1 DISASSEMBLY INSTRUCTION SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONSREMOVING THE CHASSIS PANEL REMOVING THE MAIN UNITRemove the option cover 3-2 OPTIONAL UNIT INSTALLATIONS4-1 RECEIVER CIRCUITS SECTION 4 CIRCUIT DESCRIPTION4-1-1 ANTENNA SWITCHING CIRCUIT 4-1-2 RF CIRCUIT4-1-7 WIDE AND NARROW SWITCHING CIRCUIT 4-2 TRANSMITTER CIRCUITS4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS 4-1-5 AF CIRCUIT4-4 POWER SUPPLY CIRCUITS VOLTAGE LINE 4-3 PLL CIRCUITPLL circuit LINE4-5-1 CPU IC8 4-5 PORT ALLOCATIONSCPU IC8-continued 4-5-2 OUTPUT EXPANDER IC IC105-1 PREPARATION SECTION 5 ADJUSTMENT PROCEDURESSTARTING SOFTWARE ADJUSTMENT ADJUSTMENT SOFTWARE INSTALLATIONScreen display exampe RF Power High¥ JIG cable CS-F3G ADJ Rev.2.0Top view ¥ DC power cable connectionsConnection ADJUSTMENT 5-2 PLL ADJUSTMENTADJUSTMENT CONDITIONS ADJUSTMENTADJUSTMENT 5-3 SOFTWARE ADJUSTMENTADJUSTMENT CONDITION MEASUREMENTADJUSTMENT SOFTWARE ADJUSTMENT - continuedADJUSTMENT CONDITION MEASUREMENTMAIN UNIT SECTION 6 PARTS LISTMAIN UNIT ORDERMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITCHASSIS UNIT ORDERACCESSORIES SECTION 7 MECHANICAL PARTS AND DISASSEMBLYCHASSIS PARTS MAIN UNITUNIT abbreviation C CHASSIS PARTS, M MAIN UNIT IC-F3GS partsTRANSISTOR AND FET’S SECTION 8 SEMI-CONDUCTOR INFORMATIONDIODES 9-1 GENERAL AND EIA/TIA VERSIONS EXCEPT W/N-TYPE SECTION 9 BOARD LAYOUTSMAIN UNIT TOP VIEW OPTION R143B5386H ICOMMAIN UNIT TOP VIEW 9-2 ETS/CEPT VERSIONR143 B5571CICOM to the OPTIONAL unitDS1 C255 VHF W/N9-3 W/N-TYPE MAIN UNIT TOP VIEWBUSY B5687AOPTION ICOM10-2 DISASSEMBLY INFORMATION 10-1 PARTS LISTSECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION MAIN UNIT10-4 BOARD LAYOUT 10-3 VOLTAGE DIAGRAM2SB1201 S RN2404W/N-type SECTION 11 BLOCK DIAGRAMETS/CEPT version W-type of GENSECTION 12 VOLTAGE DIAGRAM A L-band of ETS/CEPT version Page SECTION VOLTAGE DIAGRAMP81/AN1 P82/AN2 P83/AN3 P84/AN4 P85/AN5 P86/AN6 P87/AN7Page S-13713IZ-C1V 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan2000 Icom Inc SERVICE MANUAL UHF FM TRANSCEIVERSDANGER INTRODUCTIONORDERING PARTS REPAIR NOTESTABLE OF CONTENTS SECTION SPECIFICATIONSETS 300 EIA/TIASECTION 2 INSIDE VIEWS Antenna switcing circuit D2, D8 MA77 Power amplifier Q1 2SK2974 APCMAIN UNIT TOP VIEW BOTTOM VIEW3-1 DISASSEMBLY INSTRUCTION SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONSREMOVING THE CHASSIS PANEL REMOVING THE MAIN UNIT1 Remove the option cover 3-2 OPTIONAL UNIT INSTALLATIONS3 Replace the option cover to the chassis-hole SECTION 4 CIRCUIT DESCRIPTION 4-1-1 ANTENNA SWITCHING CIRCUIT4-1 RECEIVER CIRCUITS 4-1-2 RF CIRCUIT4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS 4-1-7 WIDE AND NARROW SWITCHING CIRCUIT4-2 TRANSMITTER CIRCUITS 4-1-5 AF CIRCUIT4-3 PLL CIRCUIT 4-4 POWER SUPPLY CIRCUITS VOLTAGE LINEPLL CIRCUIT LINE4-5-1 CPU IC8 4-5 PORT ALLOCATIONSCPU IC8-continued 4-5-2 OUTPUT EXPANDER IC IC10STARTING SOFTWARE ADJUSTMENT SECTION 5 ADJUSTMENT PROCEDURESADJUSTMENT SOFTWARE INSTALLATION 5-1 PREPARATIONJIG CABLE SCREEN DISPLAY EXAMPLESQL Lev Top view DC POWER CABLE CONNECTIONSCONNECTION computerADJUSTMENT 5-2 PLL ADJUSTMENTADJUSTMENT CONDITIONS ADJUSTMENTADJUSTMENT 5-3 SOFTWARE ADJUSTMENTADJUSTMENT CONDITION MEASUREMENTADJUSTMENT SOFTWARE ADJUSTMENT - continuedADJUSTMENT CONDITION MEASUREMENTMAIN UNIT SECTION 6 PARTS LISTMAIN UNIT ORDERMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITORDER DESCRIPTIONMAIN UNIT MAIN UNITORDER DESCRIPTIONORDER MAIN UNITDESCRIPTION ACCESSORIES SECTION 7 MECHANICAL PARTS AND DISASSEMBLYCHASSIS PARTS MAIN UNITEP2 M MAIN unit IC-F4GS partsTRANSISTOR AND FET’S SECTION 8 SEMI-CONDUCTOR INFORMATIONDIODES SECTION 9 BOARD LAYOUTS 9-1 LOW BANDU H F MAIN UNIT TOP VIEWR143 U H F 9-2 440-470 MHz BAND EXCEPT W/N-TYPEMAIN UNIT TOP VIEW ICOM MAIN UNIT TOP VIEW 9-3 470-500 MHz AND HIGH BANDSthe OPTIONAL unit J5 toMAIN UNIT TOP VIEW 9-4 W/N-TYPER143 10-2 DISASSEMBLY INFORMATION 10-1 PARTS LISTSECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION MAIN UNIT10-4 BOARD LAYOUT 10-3 VOLTAGE DIAGRAMW/N-type SECTION 11 BLOCK DIAGRAMW-type of GEN N-typeSECTION VOLTAGE DIAGRAMTx 2.19 Tx 4.8447 P 47 P OTHER SECTION VOLTAGE DIAGRAMCPU5 DTMF MTONE CPU5 BDET PTT CTCIN CPU5Page S-13713IZ-C1U 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan2000 Icom Inc