Manuals / Icom / Marine Equipment / Marine Radio

Icom IC-F3GS, IC-F3GT service manual Top view, Connection, ¥ DC power cable connections

Models: IC-F3GS

1 83

Page 14

• Connection

Standard signal generator to the antenna connector	to [MIC]
0.1 ∝V to 32 mV	Audio generator
(–127 dBm to –17 dBm)

CAUTION:

DO NOT transmit while an SSG is connected to the antenna connector.

to an RS-232C port
	Personal
OPC-478	computer

deviation meter

Attenuator

40 dB or 50 dB

RF power meter 0.1–10 W/50 Ω

Frequency

counter

DB9 female plug

(incl. level converter circuit)

to [SP]

SINAD meter

JIG cable

Speaker (8 Ω )

¥ DC power cable connections

SOFTWARE ADJUSTMENT

	+	DC POWER
	—
		SUPPLY

GND

Battery type detector

DC POWER

SUPPLY

Soldering

DC cable here

PLL ADJUSTMENT

—

NOTE: When you adjust the output power (high power), the battery type detector must be con- nected to GND (see illustration at above). Ohterwise the transceiver does not transmit high power, the output power will be low.

Top view

5 - 3

Page 14

Image 14

Icom IC-F3GS, IC-F3GT service manual Top view, Connection, ¥ DC power cable connections

Contents

SERVICE MANUAL VHF FM TRANSCEIVERSORDERING PARTS INTRODUCTIONDANGER REPAIR NOTESTABLE OF CONTENTS ETS 300 SPECIFICATIONSSECTION EIA/TIABOTTOM VIEW SECTION 2 INSIDE VIEWSMAIN UNIT TOP 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.2.0Connection ¥ DC power cable connectionsTop view 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 UNITDIODES SECTION 8 SEMI-CONDUCTOR INFORMATIONTRANSISTOR AND FET’S MAIN UNIT TOP VIEW SECTION 9 BOARD LAYOUTS9-1 GENERAL AND EIA/TIA VERSIONS EXCEPT W/N-TYPE 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 2000 Icom Inc 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1V 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 UNIT3 Replace the option cover to the chassis-hole 3-2 OPTIONAL UNIT INSTALLATIONS1 Remove the option cover 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 PREPARATIONSQL Lev SCREEN DISPLAY EXAMPLEJIG CABLE 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 DESCRIPTIONDESCRIPTION MAIN UNITORDER CHASSIS PARTS SECTION 7 MECHANICAL PARTS AND DISASSEMBLYACCESSORIES MAIN UNITIC-F4GS parts EP2 M MAIN unitDIODES SECTION 8 SEMI-CONDUCTOR INFORMATIONTRANSISTOR AND FET’S U H F 9-1 LOW BANDSECTION 9 BOARD LAYOUTS MAIN UNIT TOP VIEWR143 MAIN UNIT TOP VIEW 9-2 440-470 MHz BAND EXCEPT W/N-TYPEU H F 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 2000 Icom Inc 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1U