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Icom IC-F3GS Disassembly And Option Instructions, Disassembly Instruction, Removing The Main Unit

Models: IC-F3GS

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SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS

3-1 DISASSEMBLY INSTRUCTION

• REMOVING THE CHASSIS PANEL

1Unscrew 1 nut A, and remove 1 knob B.

2 Unscrew 2 screws C.

3 Take off the chassis in the direction of the arrow. 4 Unplug J6 to separate front panel and chassis.

C (nickel, 2 mm) x 2

Chassis

J6 (Speaker connector)

Front panel

•REMOVING THE MAIN UNIT

1 Remove the searing rubber.

2 Unsolder 4 points D, and unscrew 1 nut E.

3 Unscrew 3 screws F, and 6 screws G (silver, 2 mm) to separate the chassis and the MAIN unit. 4 Take off the MAIN unit in the direction of the arrow.

D F

G (silver, 2 mm) x 6

Shield cover

MAIN unit

Guide holes

Sealing rubber

Chassis

3 - 1

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Icom IC-F3GS, IC-F3GT Disassembly And Option Instructions, Disassembly Instruction, Removing The Chassis Panel

Contents

SERVICE MANUAL VHF FM TRANSCEIVERSORDERING PARTS INTRODUCTIONDANGER REPAIR NOTESTABLE OF CONTENTS ETS 300 SPECIFICATIONSSECTION EIA/TIAMAIN UNIT TOP VIEW SECTION 2 INSIDE VIEWSBOTTOM VIEW REMOVING THE CHASSIS PANEL SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION REMOVING THE MAIN UNIT3-2 OPTIONAL UNIT INSTALLATIONS Remove the option cover4-1-1 ANTENNA SWITCHING CIRCUIT SECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS 4-1-2 RF CIRCUIT4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS 4-2 TRANSMITTER CIRCUITS4-1-7 WIDE AND NARROW SWITCHING CIRCUIT 4-1-5 AF CIRCUITPLL circuit 4-3 PLL CIRCUIT4-4 POWER SUPPLY CIRCUITS VOLTAGE LINE LINECPU IC8-continued 4-5 PORT ALLOCATIONS4-5-1 CPU IC8 4-5-2 OUTPUT EXPANDER IC IC10STARTING SOFTWARE ADJUSTMENT SECTION 5 ADJUSTMENT PROCEDURES5-1 PREPARATION ADJUSTMENT SOFTWARE INSTALLATION¥ JIG cable RF Power HighScreen display exampe CS-F3G ADJ Rev.2.0Top view ¥ DC power cable connectionsConnection ADJUSTMENT CONDITIONS 5-2 PLL ADJUSTMENTADJUSTMENT ADJUSTMENTADJUSTMENT CONDITION 5-3 SOFTWARE ADJUSTMENTADJUSTMENT MEASUREMENTADJUSTMENT CONDITION SOFTWARE ADJUSTMENT - continuedADJUSTMENT MEASUREMENTMAIN UNIT SECTION 6 PARTS LISTMAIN UNIT ORDERORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONCHASSIS UNIT MAIN UNITMAIN UNIT ORDERCHASSIS PARTS SECTION 7 MECHANICAL PARTS AND DISASSEMBLYACCESSORIES MAIN UNITIC-F3GS parts UNIT abbreviation C CHASSIS PARTS, M MAIN UNITTRANSISTOR 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 B5386H R143OPTION ICOM9-2 ETS/CEPT VERSION MAIN UNIT TOP VIEWICOM B5571CR143 to the OPTIONAL unit9-3 W/N-TYPE VHF W/NDS1 C255 MAIN UNIT TOP VIEWOPTION B5687ABUSY ICOMSECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION 10-1 PARTS LIST10-2 DISASSEMBLY INFORMATION MAIN UNIT2SB1201 S 10-3 VOLTAGE DIAGRAM10-4 BOARD LAYOUT RN2404ETS/CEPT version SECTION 11 BLOCK DIAGRAMW/N-type W-type of GENSECTION 12 VOLTAGE DIAGRAM A L-band of ETS/CEPT version Page P81/AN1 P82/AN2 P83/AN3 P84/AN4 P85/AN5 VOLTAGE DIAGRAMSECTION P86/AN6 P87/AN7Page S-13713IZ-C1V 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan2000 Icom Inc UHF FM TRANSCEIVERS SERVICE MANUALORDERING PARTS INTRODUCTIONDANGER REPAIR NOTESTABLE OF CONTENTS ETS 300 SPECIFICATIONSSECTION EIA/TIAMAIN UNIT TOP VIEW Antenna switcing circuit D2, D8 MA77 Power amplifier Q1 2SK2974 APCSECTION 2 INSIDE VIEWS BOTTOM VIEWREMOVING THE CHASSIS PANEL SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION REMOVING THE MAIN UNIT1 Remove the option cover 3-2 OPTIONAL UNIT INSTALLATIONS3 Replace the option cover to the chassis-hole 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUITSECTION 4 CIRCUIT DESCRIPTION 4-1-2 RF CIRCUIT4-2 TRANSMITTER CIRCUITS 4-1-7 WIDE AND NARROW SWITCHING CIRCUIT4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS 4-1-5 AF CIRCUITPLL CIRCUIT 4-4 POWER SUPPLY CIRCUITS VOLTAGE LINE4-3 PLL CIRCUIT LINECPU IC8-continued 4-5 PORT ALLOCATIONS4-5-1 CPU IC8 4-5-2 OUTPUT EXPANDER IC IC10ADJUSTMENT SOFTWARE INSTALLATION SECTION 5 ADJUSTMENT PROCEDURESSTARTING SOFTWARE ADJUSTMENT 5-1 PREPARATIONJIG CABLE SCREEN DISPLAY EXAMPLESQL Lev CONNECTION DC POWER CABLE CONNECTIONSTop view computerADJUSTMENT CONDITIONS 5-2 PLL ADJUSTMENTADJUSTMENT ADJUSTMENTADJUSTMENT CONDITION 5-3 SOFTWARE ADJUSTMENTADJUSTMENT MEASUREMENTADJUSTMENT CONDITION SOFTWARE ADJUSTMENT - continuedADJUSTMENT MEASUREMENTMAIN UNIT SECTION 6 PARTS LISTMAIN UNIT ORDERORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITMAIN UNIT DESCRIPTIONORDER MAIN UNITDESCRIPTION CHASSIS PARTS SECTION 7 MECHANICAL PARTS AND DISASSEMBLYACCESSORIES MAIN UNITIC-F4GS parts EP2 M MAIN unitTRANSISTOR AND FET’S SECTION 8 SEMI-CONDUCTOR INFORMATIONDIODES U H F 9-1 LOW BANDSECTION 9 BOARD LAYOUTS MAIN UNIT TOP VIEWR143 U H F 9-2 440-470 MHz BAND EXCEPT W/N-TYPEMAIN UNIT TOP VIEW ICOM 9-3 470-500 MHz AND HIGH BANDS MAIN UNIT TOP VIEWJ5 to the OPTIONAL unit9-4 W/N-TYPE MAIN UNIT TOP VIEWR143 SECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION 10-1 PARTS LIST10-2 DISASSEMBLY INFORMATION MAIN UNIT10-3 VOLTAGE DIAGRAM 10-4 BOARD LAYOUTW-type of GEN SECTION 11 BLOCK DIAGRAMW/N-type N-typeTx 2.19 VOLTAGE DIAGRAMSECTION Tx 4.8447 P 47 P OTHER CPU5 DTMF MTONE CPU5 VOLTAGE DIAGRAMSECTION BDET PTT CTCIN CPU5Page S-13713IZ-C1U 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan2000 Icom Inc