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Manual Icom IC-F3GS

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  • Icom IC-F3GS - page 1

    SER VICE MANU AL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1V - q © 2000 Icom Inc. VHF FM TRANSCEIVERS ...

  • Icom IC-F3GS - page 2

    Communication Equipment Himmelgeister Str . 100, D-40225 Düsseldorf , Germany Phone : 0211 346047 F ax : 0211 333639 URL : http://www.icomeurope.com Unit 9, Sea St., Herne Bay , K ent, CT6 8LD , U.K. Phone : 01227 741741 F ax : 01227 741742 URL : http://www.icomuk.co .uk Zac de la Plaine, Rue Brindejonc des Moulinais BP 5804, 31505 T oulouse Cedex ...

  • Icom IC-F3GS - page 3

    T ABLE OF CONTENTS SECTION 1 SPECIFICA TIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 3-2 OPTIONAL UNIT INST ALLA TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Icom IC-F3GS - page 4

    1 - 1 SECTION 1 SPECIFICA TIONS All stated specifications are subject to change without notice or obligation. Frequency coverage T ype of emission Number of channels Power supply requirement TX at High Current drain at Low (approx.) RX rated audio stand-by Frequency stability Usable temperature range Dimensions (proj. not included) Weight (with BP- ...

  • Icom IC-F3GS - page 5

    2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT Power amplifier (Q1: 2SK2974) Antenna swtching circuit (D1, D2, D8: MA77) T OP VIEW BO TT OM VIEW RF amplifier (Q12: 3SK293) VCO circuit 1st mixer Q13: 3SK239A [OTHER] 3SK320 B Low-pass filter circuit TX/RX switch (D3, D4: MA77) Mic amplifier circuit APC IC3A: NJM2902V Q37: DT A144EU FM IF IC (IC2: T A31 1 ...

  • Icom IC-F3GS - page 6

    3 - 1 SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION • REMOVING THE CHASSIS P ANEL 1 Unscrew 1 nut A , and remove 1 knob B . 2 Unscrew 2 screws C . 3 T ake off the chassis in the direction of the arrow . 4 Unplug J6 to separate front panel and chassis. • REMOVING THE MAIN UNIT 1 Remove the searing rubber . 2 Unsolde ...

  • Icom IC-F3GS - page 7

    3 - 2 3-2 OPTIONAL UNIT INST ALLA TIONS 1 Remove the option cover . 2 Connect one of UT -96, UT -105, UT -108, UT -109, UT -1 10, and UT -1 1 1 optional unit to J5. 3 Replace the option cover to the chassis-hole. Option cover Option unit J5 ...

  • Icom IC-F3GS - page 8

    4 - 2 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT Received signals are passed through the low-pass filter (L1, L2, C1–C5, C8). The filtered signals are applied to the λ ⁄ 4 type antenna switching circuit (D2, D8). The antenna switching circuit functions as a low-pass filter while receiving. However , its ...

  • Icom IC-F3GS - page 9

    4 - 3 4-1-5 AF CIRCUIT AF signals from the FM IF IC (IC2, pin 9) are applied to the mute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6, 7). The output signals from pin 1 1 are applied to the AF power amplifier (IC5, pin 4) after being passed through the [VOL] control (R143). The applied AF signals are amplified at the AF power ampli- ...

  • Icom IC-F3GS - page 10

    4 - 4 The signal output from the power detector circuit (D32, D33) is applied to the differential amplifier (IC3a, pin 2), and the “T4” signal from the expander (IC10, pin 1 1), controlled by the CPU (IC8), is applied to the other input for reference. When the driving current is increased, input voltage of the differential amplifier (pin 2) wil ...

  • Icom IC-F3GS - page 11

    4 - 5 4-5 PORT ALLOCA TIONS 4-5-1 CPU (IC8) Pin number 1 9 11 12 15 16 17 18 19 21 26, 36, 37 38 44–47 49 50 51 52 53 54 55 56 57 58 59 Port name VIN RESET CSIFT SCK DAST CLIN CLOUT PLST NOIS BUSY OPV1–3 NWC KR3– KR0 RMUT MMUT DUSE S5C R5C T5C TXC AFON LIGT ESCK ESDA Description Input port for battely voltage detection. Input port for RESET s ...

  • Icom IC-F3GS - page 12

    5 - 1 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREP ARA TION When you adjust the contents on page 5-5 or 5-6, SOFTW ARE ADJUSTMENT , the optional CS-F3G ADJ ADJUSTMENT SOFTW ARE (Rev . 1.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required. ■ REQUIRED TEST EQUIPMENT EQUIPMENT DC power supply RF power meter (te ...

  • Icom IC-F3GS - page 13

    5 - 2 ¥ JIG cable + ( CLONE) — ( GND) + ( SP) — ( SPE) 3-conductor 3.5(d) mm plug OPC-478 JIG cable to IC-F3GT/GS [SP] jack CS-F3G ADJ Rev .2.0 File COM 1: OPEN Option Connect Reload (F5) Disp par a [A / D] VIN : 197 : C5h : 7.73 V TEMPS : 190 : BEh : 32.23 'C L VIN : 98 : 62h : 1.92 V SD : 0 : 00h : 0.00 V REMO T : 14 : 0Eh : 0.27 V BDET ...

  • Icom IC-F3GS - page 14

    5 - 3 to an RS-232C por t P ersonal computer to [MIC] to [SP] JIG cable DB9 female plug (incl. lev el converter circuit) • Connection to the antenna connector RF power meter 0.1–10 W/50 Ω Frequency counter Attenuator 40 dB or 50 dB FM deviation meter Standard signal generator 0.1 µ V to 32 mV (–127 dBm to –17 dBm) SINAD meter Speaker (8 ...

  • Icom IC-F3GS - page 15

    5 - 4 5-2 PLL ADJUSTMENT PLL LOCK VOL T AGE 1 2 • Operating frequency : 136.000 MHz (L-band) 146.000 MHz (H-band) • Receiving • T ransmitting MAIN Connect a digital multi meter to check point LV. 2.0 V 1.5–2.5 V MAIN L1 1 V erify ADJUSTMENT ADJUSTMENT CONDITIONS UNIT LOCA TION V ALUE UNIT ADJUST MEASUREMENT ADJUSTMENT L11 PLL lock voltage a ...

  • Icom IC-F3GS - page 16

    5 - 6 1 2 1 2 1 1 • Operating frequency: 136.000 MHz (L-band) 146.000 MHz (H-band) • High/Low switch : Low • Connect the RF power meter or 50 Ω dummy load to the antenna connector . • T ransmitting • T ransmitting • Operating frequency: 136.000 MHz (L-band) 146.000 MHz (H-band) • High/Low switch : Low • T ransmitting • High/Low ...

  • Icom IC-F3GS - page 17

    5 - 7 Minimum distortion level 12 dB SINAD At the point where the audio signals just appears. 1 • Operating frequency: 136.000 MHz (L-band) 146.000 MHz (H-band) • Connect a standard signal generator to the antenna connector and set as: Frequency : 136.000 MHz (L-band) : 146.000 MHz (H-band) Level : 5.6 µV* (–92 dBm ) Modulation : 1 kHz Devia ...

  • Icom IC-F3GS - page 18

    [MAIN UNIT] [MAIN UNIT] IC1 1 130007610 S.IC µPD3140GS-E1 (DS8) IC2 1 1 10003490 S.IC T A31 136FN (D,EL) IC3 1 1 10003780 S.IC NJM2902V -TE1 IC4 1 130008090 S.IC BU4066BCFV -E1 IC5 1 1 10001810 S.IC T A7368F (TP1) IC6 1 1 10005350 S.IC NJM2870F05-TE1 D 1 180001740 S.IC TK1 1250BMCL [OTHER] IC7 1 130009680 S.IC HN58X2432TI [OTHER] 1 140008650 S.IC ...

  • Icom IC-F3GS - page 19

    [MAIN UNIT] [MAIN UNIT] S.=Surface mount R7 7030003320 S.RESISTOR ERJ3GEYJ 101 V (100 Ω ) R9 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 k Ω ) R10 7030003250 S.RESISTOR ERJ3GEYJ 270 V (27 Ω ) K 7030003300 S.RESISTOR ERJ3GEYJ 680 V (68 Ω ) A 7030003310 S.RESISTOR ERJ3GEYJ 820 V (82 Ω ) [OTHER] R1 1 7030003450 S.RESISTOR ERJ3GEYJ 122 V (1.2 k ...

  • Icom IC-F3GS - page 20

    S.=Surface mount [MAIN UNIT] [MAIN UNIT] R171 7030003640 S.RESISTOR ERJ3GEYJ 473 V (47 k Ω ) R174 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 k Ω ) R175 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 k Ω ) R176 7030003510 S.RESISTOR ERJ3GEYJ 392 V (3.9 k Ω ) R177 7030003440 S.RESISTOR ERJ3GEYJ 102 V (1 k Ω ) R178 7030003510 S.RESISTOR ERJ3GEYJ 392 ...

  • Icom IC-F3GS - page 21

    [MAIN UNIT] [MAIN UNIT] S.=Surface mount C50 4550006200 S.T ANT ALUM ECST0JY106R C51 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A C52 4030007050 S.CERAMIC C1608 CH 1H 220J-T-A C53 4030007040 S.CERAMIC C1608 CH 1H 180J-T-A C54 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A C55 4030006900 S.CERAMIC C1608 JB 1H 103K-T-A C56 4030006900 S.CERAMIC C1608 JB 1H 10 ...

  • Icom IC-F3GS - page 22

    S.=Surface mount [MAIN UNIT] [MAIN UNIT] C221 4030008910 S.CERAMIC C1608 JB 1H 393K-T -A C222 403001 1600 S.CERAMIC C1608 JB 1E 104K-T -N C223 4030006900 S.CERAMIC C1608 JB 1H 103K-T -A C224 4030006900 S.CERAMIC C1608 JB 1H 103K-T -A C225 4030006880 S.CERAMIC C1608 JB 1H 472K-T -A I 4030009880 S.CERAMIC C1608 JB 1H 682K-T-A [OTHER] C227 4030008920 ...

  • Icom IC-F3GS - page 23

    SECTION 7 MECHANICAL P ARTS AND DISASSEMBL Y 7 - 1 RE F . N O . ODER NO . DESCRIPTION QTY . MP1 8210016541 2251 T -front panel-1 [F3GT] 1 8210016671 2251 S-front panel-1 [F3GS] 1 MP2 8930050890 2251 terminal holder 1 MP3 8010017991 2251 chassis-1 1 MP4 8210016570 2251 rear panel 1 MP5 8930050870 2251 release button 1 MP6 8210016560 2251 PTT panel 1 ...

  • Icom IC-F3GS - page 24

    7 - 2 UNIT abbreviation (C): CHASSIS P AR TS, (M): MAIN UNIT MP4 (M) MAIN unit IC-F3GS parts MP7 (C) MP1 (C) MP1 (C) MP20 (C) MP37 (C) MP21 (C) MP3 (M) DS1 (M) EP2 (M) MP1 (M) MP2 (M) MP18 (C) MP40 (C) MP22 (C) MP32 (C) MP5 (M) MP23 (C) MP12 (C) MP3 (C) MP32 (C) MP13 (C) MP13 (C) MP27 (C) MP10 (C) MP26 (C) MP4 (C) MP25 (C) MP32 (C) MP5 (C) MP14 (C) ...

  • Icom IC-F3GS - page 25

    SECTION 8 SEMI-CONDUCT OR INFORMA TION 8 - 1 2SC5085 Y (Symbol: MCY) 2SK2974 (Symbol: K2974) 2SK1069 4 (Symbol: FJ4) 2SC4116 GR (Symbol: LG) 2SA1577 Q (Symbol: HQ) 2SB1132 R (Symbol: BARB) 3SK239 A (Symbol: XR) 2SC4215 O (Symbol: QO) 2SK2973 (Symbol: K1) DTC144 TU (Symbol: 06) DTC144 EU A (Symbol: 26) UN911 H (Symbol: 6P) XP1213 (Symbol: 9L) 3SK320 ...

  • Icom IC-F3GS - page 26

    SECTION 9 BOARD LA YOUTS 9 - 1 9-1 GENERAL AND EIA/TIA VERSIONS (EXCEPT W/N-TYPE) • MAIN UNIT (TOP VIEW) DS1 VHF MC1 DS2 DS3 R204 R205 R155 R170 C215 C255 C256 R169 C233 C234 C295 R208 C21 1 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R81 R80 R79 R84 R13 C26 C24 C25 R15 R12 R1 1 R10 C23 R14 R16 R177 C136 R1 14 R1 17 ...

  • Icom IC-F3GS - page 27

    9 - 2 • MAIN UNIT (BOTTOM VIEW) C277 R252 C138 R258 R143 FI2 FI1 J2 J3 MP5 S1 S3 S2 MP6 X1 S1 S3 Q21 Q22 L25 X1 IC10 IC7 IC8 C198 IC12 Q40 R236 R238 R237 S2 C158 C155 FI2 C174 C173 C72 C298 C281 L4 L2 L1 L16 L17 L24 D29 L31 C287 C285 C8 C3 C18 C76 R96 R95 R75 L20 L19 C105 C106 C109 C104 R94 R70 R72 C97 C98 C94 L29 C99 C169 L21 C101 C100 C102 C126 ...

  • Icom IC-F3GS - page 28

    9 - 3 9-2 ETS/CEPT VERSION • MAIN UNIT (TOP VIEW) DS1 V H F MC1 DS2 DS3 R204 R205 R155 R170 C215 R169 C233 C234 C295 R208 C21 1 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R81 R80 R79 R84 R13 C26 C24 C25 R15 R12 R1 1 R10 C23 R14 R16 R177 C136 R1 14 R1 17 C137 R1 15 C217 C133 C134 R105 R176 R109 R93 R54 Q37 D33 D32 C7 ...

  • Icom IC-F3GS - page 29

    9 - 4 • MAIN UNIT (BOTTOM VIEW) C277 R252 C138 R258 R143 MP5 S1 FI2 FI1 S1 S3 Q21 Q22 L25 X1 IC10 IC7 IC8 C198 IC12 R236 R238 R237 S2 C158 C155 FI2 C174 C173 C72 C298 C281 L4 L2 L1 L16 L17 L24 D29 L31 C287 C285 C284 C8 C3 C18 C76 R96 R95 R75 L20 L19 C105 C106 C109 C104 R94 R70 R72 C97 C98 C94 L29 C99 C169 L21 C101 C100 C102 C126 R178 R262 C108 C1 ...

  • Icom IC-F3GS - page 30

    9 - 5 9-3 W/N-TYPE • MAIN UNIT (TOP VIEW) DS1 VHF W/N MC1 DS2 DS3 R204 R205 R155 R170 C215 R169 C233 C234 C295 R208 C21 1 R257 C286 C301 R175 R249 R151 R264 R186 R185 C293 R35 C55 C64 R89 C56 R90 R81 R80 R79 R84 R13 C26 C24 C25 R15 R12 R1 1 R10 C23 R14 R16 R177 C136 R1 14 R1 17 C137 R1 15 C217 C133 C134 R105 R176 R109 R93 R54 Q37 D33 D32 C75 C17 ...

  • Icom IC-F3GS - page 31

    9 - 6 • MAIN UNIT (BOTTOM VIEW) C277 R252 C138 R258 R143 FI2 FI1 J2 J3 MP5 S1 S3 S2 MP6 X1 S1 S3 Q21 Q22 L25 X1 IC10 IC7 IC8 C198 IC12 Q40 R236 R238 R237 S2 C155 FI2 C174 C173 C72 C298 C281 L4 L2 L1 L16 L17 L24 D29 L31 C287 C285 C8 C3 C18 C76 R96 R95 R75 L20 L19 C105 C106 C109 C104 R94 R70 R72 C97 C98 C94 L29 C99 C169 L21 C101 C100 C102 C126 R178 ...

  • Icom IC-F3GS - page 32

    10 - 1 SECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION RE F . N O . ODER NO . DESCRIPTION QTY . MP1 8010018030 2338 case 1 MP2 8110007080 2338 co ver 1 MP3 8930050920 2327 spacer 1 MP4 8930039620 Leg cushion (A) 4 MP5 8810008660 Scre w BT M3 x 8 NI-ZU 1 [CHASSIS UNIT] 10-1 P ARTS LIST 10-2 DISASSEMBL Y INFORMA TION MP1 (C) MP1 (M) MP2 (C) MP ...

  • Icom IC-F3GS - page 33

    10 - 2 10-3 VOL T AGE DIAGRAM 10-4 BOARD LA YOUT J2 J1 Q1 2SB1201 S R5 10 k D2 1SS184 R1 24 R2 24 W1 CHARGE+ GND TEMP DS1 TLG124A C4 0.1 R6 27 C2 0.1 R7 2 k R8 2 k R9 56 k R10 10 k R4 10 k Q4 2SC2712 GR C3 0.1 Q2 RN2404 R3 27 D1 1SS355 Q3 RN1409 D3 MA8056 M R11 1 k C1 0.1 13.80 V 12.49 V 12.47 V 1 1.82 V 1 1.80 V 5.62 V 0 V 0.74 V 0.73 V 0 V 13.77 ...

  • Icom IC-F3GS - page 34

    11 - 1 SECTION 1 1 BLOCK DIAGRAM ANT LPF LPF ANT SW D1 MA77 D2 MA77 D8 MA77 Q1 2SK2974 Q2 2SK2973 Q3 2SC5085 Y D3 MA77 D4 MA77 PLL IC Q4 2SC4215 O Q6 2SC4215 O IC1 UPD3140GS VCO Q7 2SC5085 Y Q8 2SC5085 Y REF OPTION UNIT J5 AXN330C038 2TONE or 5TONE PTT MIC AF REG AF AMP PTT CONT Q17 UN91 1H VCC IC5 T A7368F FRQCON DBAL Q15 2SB1 132 R Q16 XP6501 AB ...

  • Icom IC-F3GS - page 35

    VCC R5 S5 MIC CPU5 VCC 5V T5 R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 5V T5 R5 S5 CPU5 S5 T5 R5 CPU5 C223 0.01 D34 MA8056 M E only C224 0.01 D R131 470 Q17 UN911H R130 100 k C147 0.047 PTT C154 10 C 8 9 10 IC3C NJM2902V C133 0.1 C209 0.1 R177 1 k C125 0.0022 C124 0.01 C217 0.1 R176 3.9 k R93 27 k R109 10 k C134 220 P R104 100 k R266 15 k R108 150 k ...

  • Icom IC-F3GS - page 36

    VCC 78 9 k R120 68 k R145 1 M D26 DAN202K Q15 2SB1132 R R126 10 k C149 0.1 C146 0.001 C145 10 R122 2.7 k 4 5 6 3 2 1 Q16 XP6501 AB C140 0.1 R121 1 k C139 0.1 NC 1 VCC 2 NC 3 VIN 4 RIPPLE 5 NF 6 PHASE 7 PREGND 8 PWGND 9 POUT 10 IC5 TA7368F C171 0.1 R123 3.3 k R128 10 C150 10 R127 33 C151 47 P C152 0.047 C153 100 AFOUT DS2 LNJ310M6URA DS3 LNJ310M6URA ...

  • Icom IC-F3GS - page 37

    R160 150 VCC T5 R13 33 R15 100 R 19 0 0 R5 C27 18P 4 C4215 O R17 1 k C86 5 P ] C91 5 P L8 0.1 H S5 D4 MA77 D3 MA77 C23 0.001 R11 1.2 k R12 3.3 k C24 0.001 C26 0.001 R14 4.7 k R16 1 Q2 2SK2973 C17 0.001 C25 6 P C22 27 P C280 30 P A 47 P [OTHER] R9 10 k C298 4.7 R7 100 L28 82 nH Q3 2SC5085 Y L7 0.1 H C205 0.001 C288 0.001 C204 0.001 L24 2.7 H D1 MA77 ...

  • Icom IC-F3GS - page 38

    VCC R5 S5 MIC CPU5 VCC 5V T5 R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 5V T5 R5 S5 CPU5 S5 T5 R5 CPU5 C223 0.01 D34 MA8056 M E only C224 0.01 D R131 470 Q17 UN911H R130 100 k C147 0.047 PTT C154 10 C 8 9 10 IC3C NJM2902V C133 0.1 C209 0.1 R177 1 k C125 0.0022 C124 0.01 C217 0.1 R176 3.9 k R93 27 k R109 10 k C134 220 P R104 100 k R266 15 k R108 150 k ...

  • Icom IC-F3GS - page 39

    INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the IC-F3GT and IC-F3GS at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V . Such a connection could cause a fire hazard and/or electric shock. DO NOT expose the t ...

  • Icom IC-F3GS - page 40

    SER VICE MANU AL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1V - q © 2000 Icom Inc. VHF FM TRANSCEIVERS ...

  • Icom IC-F3GS - page 41

    SER VICE MANU AL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1U- 1 © 2000 Icom Inc. UHF FM TRANSCEIVERS ...

  • Icom IC-F3GS - page 42

    INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the IC-F4GT and IC-F4GS at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V . Such a connection could cause a fire hazard and/or electric shock. DO NOT expose the t ...

  • Icom IC-F3GS - page 43

    T ABLE OF CONTENTS SECTION 1 SPECIFICA TIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 3-2 OPTIONAL UNIT INST ALLA TIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

  • Icom IC-F3GS - page 44

    1 - 1 SECTION 1 SPECIFICA TIONS All stated specifications are subject to change without notice or obligation. Frequency coverage T ype of emission Number of channels Power supply requirement TX at High Current drain at Low (approx.) RX rated audio stand-by Frequency stability Usable temperature range Dimensions (proj. not included) Weight (with BP- ...

  • Icom IC-F3GS - page 45

    2 - 1 SECTION 2 INSIDE VIEWS • MAIN UNIT Antenna switcing circuit (D1: 1SV307) 1st mixer (Q13: 3SK239A) VCO circuit D/A converter (IC10: M62363FP-650C) EEPROM IC7: HN58X2432TI [OTHER] HN58X2464TI [ 100 channel version ] CPU (IC8: HD6433876B50H) Low pass filter circuit Antenna switcing circuit (D2, D8: MA77) Power amplifier (Q1: 2SK2974) IF amplif ...

  • Icom IC-F3GS - page 46

    3 - 1 SECTION 3 DISASSEMBL Y AND OPTION INSTRUCTIONS 3-1 DISASSEMBL Y INSTRUCTION • REMOVING THE CHASSIS P ANEL 1 Unscrew 1 nut A , and remove 1 knob B . 2 Unscrew 2 screws C . 3 T ake off the chassis in the direction of the arrow . 4 Unplug J6 to separate front panel and chassis. • REMOVING THE MAIN UNIT 1 Remove the searing rubber . 2 Unsolde ...

  • Icom IC-F3GS - page 47

    3 - 2 3-2 OPTIONAL UNIT INST ALLA TIONS 1 Remove the option cover . 2 Connect one of UT -96, UT -105, UT -108, UT -109, UT -1 10, UT -1 1 1, and UT -1 13 optional units to J5. 3 Replace the option cover to the chassis-hole. Option cover Option unit J5 ...

  • Icom IC-F3GS - page 48

    4 - 2 SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-1 ANTENNA SWITCHING CIRCUIT The antenna switching circuit functions as a low-pass filter while receiving. However , its impedance becomes very high while D2 and D8 are turned ON. Thus transmit signals are blocked from entering the receiver circuits. The antenna switching circuit employs ...

  • Icom IC-F3GS - page 49

    4 - 3 4-1-5 AF CIRCUIT AF signals from the FM IF IC (IC2, pin 9) are applied to the mute switch (IC4, pin 1) via the AF filter circuit (IC3b, pins 6, 7). The output signals from pin 1 1 are applied to the AF power amplifier (IC5, pin 4) after being passed through the [VOL] control (R143). The applied AF signals are amplified at the AF power ampli- ...

  • Icom IC-F3GS - page 50

    4 - 4 The signal output from the power detector circuit (D32, D33) is applied to the differential amplifier (IC3a, pin 2), and the “T4” signal from the expander (IC10, pin 1 1), controlled by the CPU (IC8), is applied to the other input for reference. When the driving current is increased, input voltage of the differential amplifier (pin 2) wil ...

  • Icom IC-F3GS - page 51

    4 - 5 4-5 PORT ALLOCA TIONS 4-5-1 CPU (IC8) Pin number 1 9 11 12 15 16 17 18 19 21 26, 36, 37 38 44–47 49 50 51 52 53 54 55 56 57 58 59 Port name VIN RESET CSIFT SCK DAST CLIN CLOUT PLST NOIS BUSY OPV1–3 NWC KR3– KR0 RMUT MMUT DUSE S5C R5C T5C TXC AFON LIGT ESCK ESDA Description Input port for battely voltage detection. Input port for RESET s ...

  • Icom IC-F3GS - page 52

    5 - 1 SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREP ARA TION When you adjust the contents on page 5-5 or 5-6, SOFTW ARE ADJUSTMENT , the optional CS-F3G ADJ ADJUSTMENT SOFTW ARE (Rev . 2.0 or later), OPC-478 CLONING CABLE and a JIG CABLE (see illustration at page 5-2) are required. ■ REQUIRED TEST EQUIPMENT EQUIPMENT DC power supply RF power meter (te ...

  • Icom IC-F3GS - page 53

    5 - 2 JIG CABLE + ( CLONE) ( GND) + ( SP) ( SPE) 3-conductor 3.5(d) mm plug OPC-478 JIG cable to IC-F4GT/GS [SP] jack CS-F3G ADJ Rev .2.0 File COM 1: OPEN Option Connect Reload (F5) Disp para [A / D] VIN : 197 : C5h : 7.73 V TEMPS : 190 : BEh : 32.23 ’C L VIN : 98 : 62h : 1.92 V SD : 0 : 00h : 0.00 V REMOT : 14 : 0Eh : 0.27 V BDET : 255 : FFh : 5 ...

  • Icom IC-F3GS - page 54

    5 - 3 to an RS-232C port Personal computer to [MIC] to [SP] JIG cable DB9 female plug (incl. level converter circuit) CONNECTION to the antenna connector RF power meter 0.1 10 W/50 Frequency counter Attenuator 40 dB or 50 dB FM deviation meter Standard signal generator 0.1 V to 32 mV ( 127 dBm to 17 dBm) SINAD meter Speaker (8 ) Audio generator OPC ...

  • Icom IC-F3GS - page 55

    5 - 4 L11 L405 PLL lock voltage adjustment LV PLL lock voltage check point MAIN UNIT Bottom view RF power meter 5-2 PLL ADJUSTMENT PLL LOCK VOL T AGE 1 2 3 4 • Operating frequency: 400.000 MHz A 440.000 MHz B 470.000 NHz C 490.000 MHz D , E • Receiving • T ransmitting • Operating frequency: 430.000 MHz A 470.000 MHz B 500.000 MHz C 512.000 ...

  • Icom IC-F3GS - page 56

    5 - 6 1 1 2 1 1 • Operating frequency: 400.000 MHz A 440.000 MHz B 470.000 MHz C 490.000 MHz D , E • High/Low switch : Low • Connect the RF power meter or 50 Ω dummy load to the antenna connector . • T ransmitting • Operating frequency: 415.000 MHz [EUR] of A 430.000 MHz [OTHER] of A 455.000 MHz [EUR] of B 470.000 MHz [OTHER] of B 500.0 ...

  • Icom IC-F3GS - page 57

    5 - 7 Minimum distortion level 12 dB SINAD At the point where the audio signals just appears. 1 • Operating frequency: 400.000 MHz A 440.000 MHz B 470.000 MHz C 490.000 MHz D , E • Connect a standard signal generator to the antenna connector and set as: Frequency : 400.000 MHz A 440.000 MHz B 470.000 MHz C 490.000 MHz D , E Level : 10 µV* (– ...

  • Icom IC-F3GS - page 58

    [MAIN UNIT] [MAIN UNIT] IC1 1 130007610 S.IC µPD3140GS-E1 (DS8) IC2 1 1 10003490 S.IC T A31 136FN (D,EL) IC3 1 1 10005140 S.IC NJM3403A V -TE1 IC4 1 130008090 S.IC BU4066BCFV -E1 IC5 1 1 10001810 S.IC T A7368F (TP1) IC6 1 1 10005350 S.IC NJM2870F05-TE1 D 1 180001740 S.IC TK1 1250BMCL [OTHER] IC7 1 130009680 S.IC HN58X2432TI [OTHER] 1 140008650 S.I ...

  • Icom IC-F3GS - page 59

    [MAIN UNIT] [MAIN UNIT] S.=Surface mount L441 6200003960 S.COIL MLF1608A 1R0K-T L442 6200004720 S.COIL MLF1608D R10K-T L443 6200006190 S.COIL BLM21P300S R1 7030003670 S.RESISTOR ERJ3GEYJ 823 V (82 k Ω ) R2 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 k Ω ) R3 7030003580 S.RESISTOR ERJ3GEYJ 153 V (15 k Ω ) R7 7030004980 S.RESISTOR ERJ2GEJ 101 X (1 ...

  • Icom IC-F3GS - page 60

    S.=Surface mount [MAIN UNIT] [MAIN UNIT] R194 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R195 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R196 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 k Ω ) R197 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 k Ω ) R198 7030003590 S.RESISTOR ERJ3GEYJ 183 V (18 k Ω ) R199 7030003640 S.RESISTOR ERJ3GEYJ ...

  • Icom IC-F3GS - page 61

    [MAIN UNIT] [MAIN UNIT] S.=Surface mount C21 4550006540 S.T ANT ALUM ECST1CY475R C22 4030007000 S.CERAMIC C1608 CH 1H 090D-T-A C 4030007010 S.CERAMIC C1608 CH 1H 100D-T-A B 4030007020 S.CERAMIC C1608 CH 1H 120J-T-A [OTHER] C24 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A C25 4030009530 S.CERAMIC C1608 CH 1H 030B-T-A E 4030009910 S.CERAMIC C1608 CH 1H ...

  • Icom IC-F3GS - page 62

    S.=Surface mount [MAIN UNIT] [MAIN UNIT] C173 4510004640 S.ELECTROL YTIC ECEV1CA470SP [OTHER] 4550006760 S.T ANT ALUM TEMSVB2 1A 336M-8R D C174 4510005430 S.ELECTROL YTIC ECEV0JA220SR C179 4030006900 S.CERAMIC C1608 JB 1H 103K-T -A C193 4030006990 S.CERAMIC C1608 CH 1H 080D-T -A C194 4030007020 S.CERAMIC C1608 CH 1H 120J-T -A C195 4030007080 S.CERA ...

  • Icom IC-F3GS - page 63

    [MAIN UNIT] C666 4030009910 S.CERAMIC C1608 CH 1H 040B-T -A [OTHER] 4030009920 S.CERAMIC C1608 CH 1H 050B-T-A J C668 4030009530 S.CERAMIC C1608 CH 1H 030B-T -A H , P C669 4030014180 S.CERAMIC ECUE1H470JCQ C670 4030006850 S.CERAMIC C1608 JB 1H 471K-T -A except B 4030017730 S.CERAMIC ECJ0EB1E471K A C672 4030014180 S.CERAMIC ECUE1H470JCQ C673 40300141 ...

  • Icom IC-F3GS - page 64

    SECTION 7 MECHANICAL P ARTS AND DISASSEMBL Y 7 - 1 RE F . N O . ODER NO . DESCRIPTION QTY . MP1 8210016541 2251 T -front panel-1 [F4GT] 1 8210016671 2251 S-front panel-1 [F4GS] 1 MP2 8930050890 2251 terminal holder 1 MP3 8010017991 2251 chassis-1 1 MP4 8210016570 2251 rear panel 1 MP5 8930050870 2251 release button 1 MP6 8210016560 2251 PTT panel 1 ...

  • Icom IC-F3GS - page 65

    7 - 2 UNIT abbreviation (C): CHASSIS P AR TS, (M): MAIN UNIT MP4 (M) MAIN unit IC-F4GS parts MP7 (C) MP1 (C) MP1 (C) MP20 (C) MP37 (C) MP21 (C) MP3 (M) DS1 (M) EP2 (M) MP1 (M) MP6 (M) MP18 (C) MP8 (M) MP22 (C) MP32 (C) MP5 (M) MP23 (C) MP12 (C) MP3 (C) MP32 (C) MP13 (C) MP13 (C) MP27 (C) MP10 (C) MP26 (C) MP4 (C) MP25 (C) MP32 (C) MP5 (C) MP14 (C) ...

  • Icom IC-F3GS - page 66

    SECTION 8 SEMI-CONDUCT OR INFORMA TION 8 - 1 2SC5085 Y (Symbol: MCY) 2SC5107 O (Symbol: MFO) 2SK2974 (Symbol: K2974) 2SC4116 GR (Symbol: LG) 2SA1577 Q (Symbol: HQ) 2SB1132 R (Symbol: BARB) 2SC3585 R44 (Symbol: R44) 3SK239 A (Symbol: XR) 2SK880 Y (Symbol: XY) 2SC4215 O (Symbol: QO) 2SK2973 (Symbol: K1) DTC144 TU (Symbol: 06) DTC144 EU (Symbol: 26) X ...

  • Icom IC-F3GS - page 67

    SECTION 9 BOARD LA YOUTS 9 - 1 9-1 LOW BAND • MAIN UNIT (TOP VIEW) DS1 C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C283 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 R90 C496 C1 12 C1 13 C159 C122 C289 C551 C405 R258 C156 C121 R133 R125 R155 R205 C ...

  • Icom IC-F3GS - page 68

    9 - 2 • MAIN UNIT (BOTTOM VIEW) C666 R162 C100 R448 C168 C165 EP10 C555 C106 C450 C1 10 C1 14 R261 R469 R464 R417 C417 C413 C414 W6 C419 R416 C41 1 C228 R203 C227 R224 R218 R219 R216 R101 R147 R146 C550 C154 C197 R131 C563 J5 1 LV R243 C663 C132 C230 C567 C194 C195 R515 C152 C149 R126 R220 R120 R127 D404 D403 C416 R506 R449 C104 C105 C669 R447 C5 ...

  • Icom IC-F3GS - page 69

    9 - 3 9-2 440–470 MHz BAND EXCEPT W/N-TYPE • MAIN UNIT (TOP VIEW) DS1 U H F C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C675 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 R90 C496 C1 12 C1 13 C159 C122 C289 C551 C405 R258 C156 C121 R133 R125 R155 ...

  • Icom IC-F3GS - page 70

    9 - 4 • MAIN UNIT (BOTTOM VIEW) C666 R162 C100 R448 C168 C165 EP10 C555 C106 C450 C1 10 C1 14 R261 R469 R464 R417 C417 C413 C414 W16 C419 R416 C41 1 C228 R203 C227 R224 R122 R218 R219 R216 R101 R147 R146 C550 C154 C197 R131 C563 J5 1 R243 C663 C132 C230 C567 C194 C195 R515 C152 C149 R126 R220 R120 R127 EP12 D404 D403 C416 C670 R506 R449 C104 C105 ...

  • Icom IC-F3GS - page 71

    9-3 470–500 MHz AND HIGH BANDS • MAIN UNIT (TOP VIEW) DS1 C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C283 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 R90 C496 C1 12 C1 13 C159 C122 C289 C551 C405 R258 C156 C575 C121 R133 R125 R155 R205 C148 R1 ...

  • Icom IC-F3GS - page 72

    C666 R162 C100 R448 C168 C165 EP10 C555 C106 C450 C1 10 C1 14 R261 R469 R464 R417 C417 C413 C414 W16 C419 R416 C41 1 C228 R203 C227 R224 R218 R219 R216 R101 R147 R146 C550 C154 C197 R131 C563 J5 1 LV R243 C663 C132 C230 C567 C194 C195 R515 C152 C149 R126 R220 R120 R127 D404 D403 C416 R506 R449 C104 C105 C669 R447 C557 C406 R404 C243 R159 C76 C3 D1 ...

  • Icom IC-F3GS - page 73

    DS1 UHF W/N C291 R186 C443 C573 C561 C556 R1 16 C665 R530 R457 R502 C558 R507 C217 R518 C675 R142 C282 R244 C664 R527 C572 C495 R528 L441 C137 R30 Q25 R97 D4 R44 Q34 R14 Q401 Q403 R32 IC1 IC2 X3 C63 R89 R83 C308 R90 C496 C1 12 C1 13 C159 C122 C289 C551 C405 R258 C156 C121 R133 R125 R155 R205 C148 R169 R215 R170 EP15 EP14 R414 C473 R79 C25 C19 L31 C ...

  • Icom IC-F3GS - page 74

    C666 R162 C100 R448 C168 C165 EP10 C555 C106 C450 C1 10 C1 14 R261 R469 R464 R417 C417 C413 C414 W16 C419 R416 C41 1 C228 R203 C227 R224 R122 R218 R219 R216 R101 R147 R146 C550 C154 C197 R131 C563 J5 1 R243 C663 C132 C230 C567 C194 C195 R515 C152 C149 R126 R220 R120 R127 EP12 D404 D403 C416 C670 R506 R449 C104 C105 C669 R447 C557 C406 R404 C243 R15 ...

  • Icom IC-F3GS - page 75

    10 - 1 SECTION 10 BC-137 OPTIONAL DESKTOP CHARGER INFORMASION RE F . N O . ODER NO . DESCRIPTION QTY . MP1 8010018030 2338 case 1 MP2 8110007080 2338 co ver 1 MP3 8930050920 2327 spacer 1 MP4 8930039620 Leg cushion (A) 4 MP5 8810008660 Scre w BT M3 x 8 NI-ZU 1 [CHASSIS UNIT] 10-1 P ARTS LIST 10-2 DISASSEMBL Y INFORMA TION MP1 (C) MP1 (M) MP2 (C) MP ...

  • Icom IC-F3GS - page 76

    10 - 2 10-3 VOL T AGE DIAGRAM 10-4 BOARD LA YOUT J2 J1 Q1 2SB1201 S R5 10 k D2 1SS184 R1 24 R2 24 W1 CHARGE+ GND TEMP DS1 TLG124A C4 0.1 R6 27 C2 0.1 R7 2 k R8 2 k R9 56 k R10 10 k R4 10 k Q4 2SC2712 GR C3 0.1 Q2 RN2404 R3 27 D1 1SS355 Q3 RN1409 D3 MA8056 M R11 1 k C1 0.1 13.80 V 12.49 V 12.47 V 1 1.82 V 1 1.80 V 5.62 V 0 V 0.74 V 0.73 V 0 V 13.77 ...

  • Icom IC-F3GS - page 77

    11 - 1 SECTION 1 1 BLOCK DIAGRAM ANT LPF LPF ANT SW D1 1SV307 D2 MA77 D8 MA77 Q1 2SK2974 Q2 2SK2973 Q3 2SC3585 R44 Q403 2SC5107 O D3 MA77 D4 MA77 PLL IC Q4 2SC5107 O Q6 2SC5107 O IC1 UPD3140GS VCO Q7 2SC5085 Y Q8 2SC5085 Y REF X4 CR-662 (15.3 MHz) OPTION UNIT J5 AXN330C038 2TONE or 5TONE PTT MIC AF REG AF AMP PTT CONT Q17 UN91 1H VCC IC5 T A7368F F ...

  • Icom IC-F3GS - page 78

    VCC R5 5V S5 MIC VCC CPU5 T5 5V 5V R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 T5 R5 S5 5V S5 T5 R5 C223 0.01 C224 0.01 C562 47 P D R131 470 Q17 UN911H R130 100 k C147 0.1 C554 470 P PTT C154 10 C 8 9 10 IC3C NJM3403AV C133 0.1 C677 470 P C209 0.1 C563 47 P R177 1 k C125 0.0022 C124 0.01 C217 0.1 R176 3.9 k R93 27 k R109 10 k C134 180 P C665 47 P C556 ...

  • Icom IC-F3GS - page 79

    VCC R178 3.3 k C129 15 R120 68 k R145 1 M 0 0 k D26 DAN202K Q15 2SB1132 R R126 10 k C149 0.1 C146 0.22 C145 10 R122 2.7 k 4 5 6 3 2 1 Q16 XP6501 AB C140 0.1 R121 1 k C139 0.1 NC 1 VCC 2 NC 3 VIN 4 RIPPLE 5 NF 6 PHASE 7 PREGND 8 PWGND 9 POUT 10 IC5 TA7368F R123 3.3 k R128 10 C150 10 R127 33 C151 47 P C152 0.047 C153 100 AFOUT DS2 LNJ310M6URA DS3 LNJ ...

  • Icom IC-F3GS - page 80

    ANT R160 100 L26 3225 H VCC T5 R13 10 R15 10 k R5 C27 5 P 0 7 O R17 4.7 k L8 2 2 nH J , C 2 7 nH E , B S5 D4 MA77 D3 MA77 C21 4.7 R12 4.7 k C24 470 P C26 0.001 C670 470 P R14 100 C659 0.001 C14 0.01 except A Q3 2SC3585 R44 C205 0.001 C288 0.001 C204 47 P L24 LQW1608A R22G00 D1 1SV307 C10 0.001 C9 0.001 C251 0.001 C252 0.001 C551 0.001 C285 24 P R2 ...

  • Icom IC-F3GS - page 81

    VCC R5 5V S5 MIC VCC CPU5 T5 5V 5V R5 S5 VOLIN VOLOUT AFOUT MIC SP VCC CPU5 T5 R5 S5 5V S5 T5 R5 C223 0.01 C224 0.01 C562 47 P D R131 470 Q17 UN911H R130 100 k C147 0.1 C554 470 P PTT C154 10 C 8 9 10 IC3C NJM3403AV C133 0.1 C677 470 P C209 0.1 C563 47 P R177 1 k C125 0.0022 C124 0.01 C217 0.1 R176 3.9 k R93 27 k R109 10 k C134 180 P C665 47 P C556 ...

  • Icom IC-F3GS - page 82

    INTRODUCTION DANGER ORDERING P ARTS REP AIR NOTES This service manual describes the latest service information for the IC-F4GT and IC-F4GS at the time of publication. NEVER connect the transceiver to an AC outlet or to a DC power supply that uses more than 16 V . Such a connection could cause a fire hazard and/or electric shock. DO NOT expose the t ...

  • Icom IC-F3GS - page 83

    SER VICE MANU AL 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan S-13713IZ-C1U- 1 © 2000 Icom Inc. UHF FM TRANSCEIVERS ...

Manufacturer Icom Category Marine Radio

Documents that we receive from a manufacturer of a Icom IC-F3GS can be divided into several groups. They are, among others:
- Icom technical drawings
- IC-F3GS manuals
- Icom product data sheets
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- or energy labels Icom IC-F3GS
All of them are important, but the most important information from the point of view of use of the device are in the user manual Icom IC-F3GS.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Icom IC-F3GS, service manual, brief instructions and user manuals Icom IC-F3GS. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Icom IC-F3GS.

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A complete manual for the device Icom IC-F3GS, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Icom IC-F3GS by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Icom IC-F3GS.

A complete Icom manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Icom IC-F3GS - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Icom IC-F3GS, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Icom IC-F3GS, that we can find in the current document
3. Tips how to use the basic functions of the device Icom IC-F3GS - which should help us in our first steps of using Icom IC-F3GS
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Icom IC-F3GS
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Icom IC-F3GS in a specific country, if it was not possible to solve the problem on our own.

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