ICOM IC-F3GB User Manual

SERVICEMANUAL1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1V-q© 2000 Icom Inc.VHF FM TRANSCEIVERS

4 - 4The signal output from the power detector circuit (D32, D33)is applied to the differential amplifier (IC3a, pin 2), and the“T4” signal from the e

4 - 54-5 PORT ALLOCATIONS4-5-1 CPU (IC8)Pinnumber19111215161718192126, 36,373844–474950515253545556575859PortnameVINRESETCSIFTSCKDASTCLINCLOUTPLSTNOIS

5 - 1SECTION 5 ADJUSTMENT PROCEDURES5-1 PREPARATIONWhen you adjust the contents on page 5-5 or 5-6, SOFTWARE ADJUSTMENT, the optional CS-F3G ADJ ADJUS

5 - 2¥ JIG cable+( CLONE)—( GND)+( SP)—( SPE)3-conductor 3.5(d) mm plugOPC-478JIG cableto IC-F3GT/GS [SP] jackCS-F3G ADJ Rev.2.0Fi

5 - 3to an RS-232C portPersonalcomputerto [MIC]to [SP]JIG cableDB9 female plug(incl. level converter circuit)• Connectionto the antenna connectorRF po

5 - 45-2 PLL ADJUSTMENTPLL LOCKVOLTAGE12• Operating frequency : 136.000 MHz (L-band)146.000 MHz (H-band)• Receiving• TransmittingMAIN Connect a digita

5 - 6121211• Operating frequency: 136.000 MHz (L-band)146.000 MHz (H-band)• High/Low switch : Low• Connect the RF power meter or 50 Ωdummy load to the

5 - 7Minimum distortionlevel12 dB SINADAt the point wherethe audio signalsjust appears.1• Operating frequency: 136.000 MHz (L-band)146.000 MHz (H-band

[MAIN UNIT][MAIN UNIT]IC1 1130007610 S.IC µPD3140GS-E1 (DS8) IC2 1110003490 S.IC TA31136FN (D,EL) IC3 1110003780 S.IC NJM2902V-TE1IC4 1130008090 S.IC

[MAIN UNIT][MAIN UNIT]S.=Surface mountR7 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω) R9 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R10 7030003250 S

Communication EquipmentHimmelgeister Str. 100, D-40225 Düsseldorf, GermanyPhone : 0211 346047 Fax : 0211 333639URL : http://www.icomeurope.comUnit 9,

S.=Surface mount[MAIN UNIT][MAIN UNIT]R171 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 kΩ) R174 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 kΩ) R175 7030003

[MAIN UNIT][MAIN UNIT]S.=Surface mountC50 4550006200 S.TANTALUM ECST0JY106RC51 4030007090 S.CERAMIC C1608 CH 1H 470J-T-AC52 4030007050 S.CERAMIC C1608

S.=Surface mount[MAIN UNIT][MAIN UNIT]C221 4030008910 S.CERAMIC C1608 JB 1H 393K-T-AC222 4030011600 S.CERAMIC C1608 JB 1E 104K-T-NC223 4030006900 S.CE

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY7 - 1REF. NO. ODER NO. DESCRIPTION QTY.MP1 8210016541 2251 T-front panel-1 [F3GT] 18210016671 2251 S-front p

7 - 2UNIT abbreviation (C): CHASSIS PARTS, (M): MAIN UNITMP4 (M)MAIN unitIC-F3GS partsMP7 (C)MP1 (C)MP1 (C)MP20 (C)MP37 (C)MP21 (C)MP3 (M)DS1 (M)EP2 (

SECTION 8 SEMI-CONDUCTOR INFORMATION8 - 12SC5085 Y(Symbol: MCY)2SK2974(Symbol: K2974)2SK1069 4(Symbol: FJ4)2SC4116 GR(Symbol: LG)2SA1577 Q(Symbol: HQ)

SECTION 9 BOARD LAYOUTS9 - 19-1 GENERAL AND EIA/TIA VERSIONS (EXCEPT W/N-TYPE)• MAIN UNIT (TOP VIEW)DS1VHFMC1DS2DS3R204R205 R155R170C215C255C256R169C2

9 - 2• MAIN UNIT (BOTTOM VIEW)C277R252C138R258R143FI2FI1J2J3MP5S1S3S2MP6X1S1 S3Q21Q22L25X1IC10IC7IC8C198IC12Q40R236R238R237S2C158C155FI2C174C173C72C29

9 - 39-2 ETS/CEPT VERSION• MAIN UNIT (TOP VIEW)DS1V H FMC1DS2DS3R204R205 R155R170C215R169C233C234C295R208C211R257C286C301R175R249R151R264R186R185C293R

9 - 4• MAIN UNIT (BOTTOM VIEW)C277R252C138R258R143MP5S1FI2FI1S1 S3Q21Q22L25X1IC10IC7IC8C198IC12R236R238R237S2C158C155FI2C174C173C72C298C281L4L2L1L16L1

TABLE OF CONTENTSSECTION 1 SPECIFICATIONSSECTION 2 INSIDE VIEWSSECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION . . . . . . .

9 - 59-3 W/N-TYPE• MAIN UNIT (TOP VIEW)DS1VHF W/NMC1DS2DS3R204R205 R155R170C215R169C233C234C295R208C211R257C286C301R175R249R151R264R186R185C293R35C55C

9 - 6• MAIN UNIT (BOTTOM VIEW)C277R252C138R258R143FI2FI1J2J3MP5S1S3S2MP6X1S1S3Q21Q22L25X1IC10IC7IC8C198IC12Q40R236R238R237S2C155FI2C174C173C72C298C281

10 - 1SECTION 10BC-137 OPTIONAL DESKTOP CHARGER INFORMASIONREF. NO. ODER NO. DESCRIPTION QTY.MP1 8010018030 2338 case 1MP2 8110007080 2338 cover 1MP3

10 - 210-3 VOLTAGE DIAGRAM10-4 BOARD LAYOUTJ2J1Q12SB1201 SR5 10 kD2 1SS184R1 24R2 24W1CHARGE+GNDTEMPDS1 TLG124AC40.1R627C20.1R72 kR82 kR956 kR1010 kR4

11 - 1SECTION 11 BLOCK DIAGRAMANTLPFLPFANTSWD1 MA77D2 MA77D8 MA77Q1 2SK2974Q2 2SK2973Q3 2SC5085 YD3 MA77D4 MA77PLL ICQ4 2SC4215 OQ6 2SC4215 OIC1 UPD31

VCCR5S5MICCPU5VCC5VT5R5S5VOLINVOLOUTAFOUTMICSPVCCCPU55VT5R5S5CPU5S5T5R5CPU5C2230.01D34MA8056 ME onlyC2240.01DR131470Q17UN911HR130100 kC1470.047PTTC154

VCC789 kR12068 kR1451 MD26DAN202KQ152SB1132 RR12610 kC1490.1C1460.001C14510R1222.7 k456321Q16XP6501 ABC1400.1R1211 kC1390.1NC1VCC2NC3VIN4RIPPLE5NF6PHA

R160150VCCT5R1333R15100R1900R5C2718P4C4215 OR171 kC865 P]C915 PL80.1 HS5D4MA77D3MA77C230.001R111.2 kR123.3 kC240.001C260.001R144.7 kR161Q22SK2973C170.

VCCR5S5MICCPU5VCC5VT5R5S5VOLINVOLOUTAFOUTMICSPVCCCPU55VT5R5S5CPU5S5T5R5CPU5C2230.01D34MA8056 ME onlyC2240.01DR131470Q17UN911HR130100 kC1470.047PTTC154

INTRODUCTIONDANGERORDERING PARTSREPAIR NOTESThis service manual describes the latest service informationfor the IC-F3GT and IC-F3GS at the time of pub

1 - 1SECTION 1 SPECIFICATIONS All stated specifications are subject to change without notice or obligation.Frequency coverageType of emissionNumber of

SERVICEMANUAL1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1V-q© 2000 Icom Inc.VHF FM TRANSCEIVERS

SERVICEMANUAL1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1U-1© 2000 Icom Inc.UHF FM TRANSCEIVERS

INTRODUCTIONDANGERORDERING PARTSREPAIR NOTESThis service manual describes the latest service informationfor the IC-F4GT and IC-F4GS at the time of pub

TABLE OF CONTENTSSECTION 1 SPECIFICATIONSSECTION 2 INSIDE VIEWSSECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION . . . . . . .

1 - 1SECTION 1 SPECIFICATIONS All stated specifications are subject to change without notice or obligation.Frequency coverageType of emissionNumber of

2 - 1SECTION 2 INSIDE VIEWS• MAIN UNITAntenna switcing circuit(D1: 1SV307)1st mixer(Q13: 3SK239A)VCO circuitD/A converter(IC10: M62363FP-650C)EEPROM I

3 - 1SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION• REMOVING THE CHASSIS PANEL1 Unscrew 1 nut A, and remove 1 knob B.2 Unsc

3 - 23-2 OPTIONAL UNIT INSTALLATIONS1 Remove the option cover.2 Connect one of UT-96, UT-105, UT-108, UT-109, UT-110, UT-111, and UT-113 optional unit

4 - 2SECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS4-1-1 ANTENNA SWITCHING CIRCUITThe antenna switching circuit functions as a low-pass filterwhil

4 - 34-1-5 AF CIRCUITAF signals from the FM IF IC (IC2, pin 9) are applied to themute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6,7).

2 - 1SECTION 2 INSIDE VIEWS• MAIN UNITPower amplifier(Q1: 2SK2974)Antenna swtching circuit(D1, D2, D8: MA77)TOP VIEW BOTTOM VIEWRF amplifier(Q12: 3SK2

4 - 4The signal output from the power detector circuit (D32, D33)is applied to the differential amplifier (IC3a, pin 2), and the“T4” signal from the e

4 - 54-5 PORT ALLOCATIONS4-5-1 CPU (IC8)Pinnumber19111215161718192126, 36,373844–474950515253545556575859PortnameVINRESETCSIFTSCKDASTCLINCLOUTPLSTNOIS

5 - 1SECTION 5 ADJUSTMENT PROCEDURES5-1 PREPARATIONWhen you adjust the contents on page 5-5 or 5-6, SOFTWARE ADJUSTMENT, the optional CS-F3G ADJ ADJUS

5 - 2 JIG CABLE+( CLONE)( GND)+( SP)( SPE)3-conductor 3.5(d) mm plugOPC-478JIG cableto IC-F4GT/GS [SP] jackCS-F3G ADJ Rev.2.0File

5 - 3to an RS-232C portPersonalcomputerto [MIC]to [SP]JIG cableDB9 female plug(incl. level converter circuit) CONNECTIONto the antenna connectorRF po

5 - 4L11L405PLL lock voltageadjustmentLVPLL lock voltagecheck point MAIN UNITBottom viewRF power meter5-2 PLL ADJUSTMENTPLL LOCKVOLTAGE1234• Operatin

5 - 611211• Operating frequency: 400.000 MHz A440.000 MHz B470.000 MHz C490.000 MHz D, E• High/Low switch : Low• Connect the RF power meter or 50 Ωdum

5 - 7Minimum distortionlevel12 dB SINADAt the point wherethe audio signalsjust appears.1• Operating frequency: 400.000 MHz A440.000 MHz B470.000 MHz C

[MAIN UNIT][MAIN UNIT]IC1 1130007610 S.IC µPD3140GS-E1 (DS8) IC2 1110003490 S.IC TA31136FN (D,EL) IC3 1110005140 S.IC NJM3403AV-TE1IC4 1130008090 S.IC

[MAIN UNIT][MAIN UNIT]S.=Surface mountL441 6200003960 S.COIL MLF1608A 1R0K-TL442 6200004720 S.COIL MLF1608D R10K-TL443 6200006190 S.COIL BLM21P300SR1

3 - 1SECTION 3 DISASSEMBLY AND OPTION INSTRUCTIONS3-1 DISASSEMBLY INSTRUCTION• REMOVING THE CHASSIS PANEL1 Unscrew 1 nut A, and remove 1 knob B.2 Unsc

S.=Surface mount[MAIN UNIT][MAIN UNIT]R194 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R195 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) R196 70300

[MAIN UNIT][MAIN UNIT]S.=Surface mountC21 4550006540 S.TANTALUM ECST1CY475RC22 4030007000 S.CERAMIC C1608 CH 1H 090D-T-AC4030007010 S.CERAMIC C1608 CH

S.=Surface mount[MAIN UNIT][MAIN UNIT]C173 4510004640S.ELECTROLYTICECEV1CA470SP [OTHER]4550006760 S.TANTALUM TEMSVB2 1A 336M-8RDC174 4510005430S.ELECT

[MAIN UNIT]C666 4030009910 S.CERAMIC C1608 CH 1H 040B-T-A [OTHER]4030009920 S.CERAMIC C1608 CH 1H 050B-T-AJC668 4030009530 S.CERAMIC C1608 CH 1H 030B-

SECTION 7 MECHANICAL PARTS AND DISASSEMBLY7 - 1REF. NO. ODER NO. DESCRIPTION QTY.MP1 8210016541 2251 T-front panel-1 [F4GT] 18210016671 2251 S-front p

7 - 2UNIT abbreviation (C): CHASSIS PARTS, (M): MAIN UNITMP4 (M)MAIN unitIC-F4GS partsMP7 (C)MP1 (C)MP1 (C)MP20 (C)MP37 (C)MP21 (C)MP3 (M)DS1 (M)EP2 (

SECTION 8 SEMI-CONDUCTOR INFORMATION8 - 12SC5085 Y(Symbol: MCY)2SC5107 O(Symbol: MFO)2SK2974(Symbol: K2974)2SC4116 GR(Symbol: LG)2SA1577 Q(Symbol: HQ)

SECTION 9 BOARD LAYOUTS9 - 19-1 LOW BAND• MAIN UNIT (TOP VIEW)DS1C291R186C443C573C561C556R116C665R530R457R502C558R507C217R518C283R142C282R244C664R527C

9 - 2• MAIN UNIT (BOTTOM VIEW)C666R162C100R448C168C165EP10C555C106C450C110C114R261R469R464R417C417C413C414W6C419R416C411C228R203C227R224R218R219R216R1

9 - 39-2 440–470 MHz BAND EXCEPT W/N-TYPE• MAIN UNIT (TOP VIEW)DS1U H FC291R186C443C573C561C556R116C665R530R457R502C558R507C217R518C675R142C282R244C66

3 - 23-2 OPTIONAL UNIT INSTALLATIONS1 Remove the option cover.2 Connect one of UT-96, UT-105, UT-108, UT-109, UT-110, and UT-111 optional unit to J5.3

9 - 4• MAIN UNIT (BOTTOM VIEW)C666R162C100R448C168C165EP10C555C106C450C110C114R261R469R464R417C417C413C414W16C419R416C411C228R203C227R224R122R218R219R

9-3 470–500 MHz AND HIGH BANDS• MAIN UNIT (TOP VIEW)DS1C291R186C443C573C561C556R116C665R530R457R502C558R507C217R518C283R142C282R244C664R527C572C495R52

C666R162C100R448C168C165EP10C555C106C450C110C114R261R469R464R417C417C413C414W16C419R416C411C228R203C227R224R218R219R216R101R147R146C550C154C197R131C56

DS1UHFW/NC291R186C443C573C561C556R116C665R530R457R502C558R507C217R518C675R142C282R244C664R527C572C495R528L441C137R30Q25R97D4R44Q34R14Q401Q403R32IC1IC2

C666R162C100R448C168C165EP10C555C106C450C110C114R261R469R464R417C417C413C414W16C419R416C411C228R203C227R224R122R218R219R216R101R147R146C550C154C197R13

10 - 1SECTION 10BC-137 OPTIONAL DESKTOP CHARGER INFORMASIONREF. NO. ODER NO. DESCRIPTION QTY.MP1 8010018030 2338 case 1MP2 8110007080 2338 cover 1MP3

10 - 210-3 VOLTAGE DIAGRAM10-4 BOARD LAYOUTJ2J1Q12SB1201 SR5 10 kD2 1SS184R1 24R2 24W1CHARGE+GNDTEMPDS1 TLG124AC40.1R627C20.1R72 kR82 kR956 kR1010 kR4

11 - 1SECTION 11 BLOCK DIAGRAMANTLPFLPFANTSWD1 1SV307D2 MA77D8 MA77Q1 2SK2974Q2 2SK2973Q3 2SC3585 R44Q403 2SC5107 OD3 MA77D4 MA77PLL ICQ4 2SC5107 OQ6

VCCR55VS5MICVCCCPU5T55V5VR5S5VOLINVOLOUTAFOUTMICSPVCCCPU5T5R5S55VS5T5R5C2230.01C2240.01C56247 PDR131470Q17UN911HR130100 kC1470.1C554470 PPTTC15410C891

VCCR1783.3 kC12915R12068 kR1451 M00kD26DAN202KQ152SB1132 RR12610 kC1490.1C1460.22C14510R1222.7 k456321Q16XP6501 ABC1400.1R1211 kC1390.1NC1VCC2NC3VIN4R

4 - 2SECTION 4 CIRCUIT DESCRIPTION4-1 RECEIVER CIRCUITS4-1-1 ANTENNA SWITCHING CIRCUITReceived signals are passed through the low-pass filter (L1,L2,

ANTR160100L263225 HVCCT5R1310R1510 kR5C275 P07 OR174.7 kL822 nH J, C27 nH E, BS5D4MA77D3MA77C214.7R124.7 kC24470 PC260.001C670470 PR14100C6590.001C140

VCCR55VS5MICVCCCPU5T55V5VR5S5VOLINVOLOUTAFOUTMICSPVCCCPU5T5R5S55VS5T5R5C2230.01C2240.01C56247 PDR131470Q17UN911HR130100 kC1470.1C554470 PPTTC15410C891

INTRODUCTIONDANGERORDERING PARTSREPAIR NOTESThis service manual describes the latest service informationfor the IC-F4GT and IC-F4GS at the time of pub

SERVICEMANUAL1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, JapanS-13713IZ-C1U-1© 2000 Icom Inc.UHF FM TRANSCEIVERS

4 - 34-1-5 AF CIRCUITAF signals from the FM IF IC (IC2, pin 9) are applied to themute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6,7).