Icom IC-F33GT Service Manual
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Icom IC-F33GT Service Manual

Vhf transceiver
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See also: Instruction Manual
GUIDE FOR CD
1) COMPOSION
IC_F33_F43_series
2) DESCRIPTION
F33_F34.pdf
The service manual for IC-F33/F34/GT/GS including all service information in this CD. This file is mainly used for viewing on the
computer display and checking page order to make printed service manual. Or when you want to find a component, you can
find very fast using "FIND" function (except Board Layout).
F43_F44.pdf
The service manual for IC-F43/F44/GT/GS including all service information in this CD. This file is mainly used for viewing on the
computer display and checking page order to make printed service manual. Or when you want to find a component, you can
find very fast using "FIND" function (except Board Layout).
F33_F34.pdf
F43_F44.pdf
FYC
Installer
W_README.txt
1
F33_F34_A3format.pdf
F33_F34_A4format.pdf
F43_F44_A3format.pdf
F43_F44_A4format.pdf
F33_F43_MANUAL.pdf
F34_F44_MANUAL.pdf
ar505eng.exe

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Summary of Contents for Icom IC-F33GT

  • Page 1 GUIDE FOR CD 1) COMPOSION IC_F33_F43_series F33_F34.pdf F43_F44.pdf F33_F34_A3format.pdf F33_F34_A4format.pdf F43_F44_A3format.pdf F43_F44_A4format.pdf F33_F43_MANUAL.pdf F34_F44_MANUAL.pdf Installer ar505eng.exe W_README.txt 2) DESCRIPTION F33_F34.pdf The service manual for IC-F33/F34/GT/GS including all service information in this CD. This file is mainly used for viewing on the computer display and checking page order to make printed service manual.
  • Page 2 ========================================================================================= Icom, Icom Inc. and Icom logo are registered trademarks of Icom Incorporated (Japan) in the United states, the United Kingdom, Germany, France, Spain, Russia and/or other countries. Acrobat Reader Copyright © 1987-2002 Adobe Systems Incorporated. All rights reserved.
  • Page 3 SERVICE MANUAL VHF TRANSCEIVERS...
  • Page 4 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. Icom, Icom Inc. and are registered trademarks of Icom Incorporated (Japan) in the United States, the United Kingdom, Germany, France, Spain, Russia and/or other countries.

  • Page 5: Table Of Contents

    TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTIONS SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS............4-1 TRANSMITTER CIRCUITS .
  • Page 6 SECTION 1 SPECIFICATIONS ■ GENERAL • Frequency coverage : 136.000–174.000 MHz • Mode : FM • Type of emission VERSION WIDE MIDDLE NARROW [USA], [GEN] 11K0F3E (12.5 kHz) 16K0F3E (25.0 kHz) [EUR] 14K0F3E (20.0 kHz) 8K50F3E (12.5 kHz) • Number of conventional channels : 256 ch, 16 banks : 50 Ω...
  • Page 7 SECTION 2 INSIDE VIEWS • MAIN UNIT TOP VIEW BOTTOM VIEW AF amplifier (IC15: TA7368F) +5 Regulator APC amplifier IF amplifier (IC17: NJM2870) (IC2: TA75S01F) (Q7: 2SC4215) TX Mute switch TX/RX switch FM IF IC (Q501: UNR9213J) (D16, D17: MA2S077) (IC9: TA31136FN) VCO circuits PLL IC...

  • Page 8: Section 3 Disassembly Instructions

    SECTION 3 DISASSEMBLY INSTRUCTIONS • • REMOVING THE CHASSIS UNIT REMOVING THE PA UNIT 1 Unscrew 1 nut A, and remove 2 knobs B, C. 1 Unscrew 3 screws M. 2 Unscrew 2 screws D. 2 Unsolder 4 points N, and take off the PA unit in the 3 Unscrew 2 screws E.

  • Page 9: Receiver Circuits

    SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS 4-1-3 1ST MIXER AND 1ST IF CIRCUITS (MAIN UNIT) 4-1-1 ANTENNA SWITCHING CIRCUIT (PA UNIT) The 1st mixer circuit converts the received signal into fixed The antenna switching circuit functions as a low-pass filter frequency of the 1st IF signal with the PLL output frequency.
  • Page 10 The 2nd IF signal from the 2nd mixer (IC9, pin 3) passes 4-1-6 SQUELCH CIRCUITS (MAIN UNIT) through the ceramic filter (FI2) to remove unwanted hetero- • NOISE SQUELCH dyned frequencies. It is then amplified at the limiter amplifier A squelch circuit cuts out AF signals when no RF signals section (IC9, pin 5) and applied to the quadrature detector are received.

  • Page 11: Transmitter Circuits

    The mixed signals are passed through the D/A converter 4-2 TRANSMITTER CIRCUITS (IC12, pin 3, 4), and are then applied to the D12 in the TX 4-2-1 MICROPHONE AMPLIFIER CIRCUIT VCO circuit. (MAIN UNIT) The microphone amplifier circuit amplifies audio signals within +6 dB/octave pre-emphasis characteristics from the 4-2-3 DRIVE/POWER AMPLIFIER CIRCUITS microphone to a level needed for the modulation circuit.

  • Page 12: Pll Circuits

    4-3-2 VCO CIRCUITS (MAIN UNIT) 4-3 PLL CIRCUITS The VCO circuits contains a separate RX VCO (Q17, D9, 4-3-1 PLL CIRCUIT (MAIN UNIT) D11, D500) and TX VCO (Q16, D10, D13, D501). The oscil- A PLL circuit provides stable oscillation of the transmit fre- lated signal is amplified at the buffer amplifiers (Q15, Q29) quency and receive 1st LO frequency.

  • Page 13: Other Circuits

    4-5 OTHER CIRCUITS 4-6 PORT ALLOCATIONS 4-5-1 COMPANDER CIRCUIT (MAIN UNIT) 4-6-1 D/A CONVERTOR IC (IC12) IC-F33GT/GS/F34GT/GS have compander circuit which can Port improve S/N ratio and become wide dynamic range. The cir- Description Number name cuit is composed in the base band IC (IC14).
  • Page 14 4-6-2 CPU (MAIN unit; IC22) Port Port Description Description number name Number name 13, 15, CENC0– Output the CTCSS/DTCS signals. Input port for the PTT switch detec- CENC2 tion signal. Low: While the PTT switch is Outputs the reference oscillator cor- pushed.

  • Page 15: Section 5 Adjustment Procedures

    SECTION 5 ADJUSTMENT PROCEDURES 5-1 PREPARATION When adjusting IC-F33GT/F33GS/F34GT/F34GS, the optional CS-F33G ADJ ADJUSTMENT SOFTWARE (Rev. 1.0 or later), OPC-478 (RS-232C type), OPC-478U (USB type) and a JIG CABLE (see illustration at page 5-3) CLONING CABLE CLONING CABLE are required.
  • Page 16 • CS-F33G ADJ'S SCREEN EXAMPLE NOTE: The above values for settings are example only. Each transceiver has its own specific values for each setting. q: Transceiver's connection state !1 : CTCSS/DTCS deviation w: Reload adjustment data !2 : Squelch level e: Receive sensitivity measurement !3 : Reference frequency r: Connected DC voltage measurement...
  • Page 17 • CONNECTION AC millivoltmeter To [MIC] Audio generator to the antenna connector Standard signal generator 0.1 µV to 32 mV (−127 dBm to −17 dBm) OPC-478 (RS-232C type) to RS-232C port CAUTION! DO NOT transmit while OPC-478U (USB type) an SSG is connected to the antenna connector.
  • Page 18 5-2 SOFTWARE ADJUSTMENT (TRANSMITTING) Select an operation using [↑] / [↓]keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION PLL LOCK 1 • Operating Channel : CH7 Check the "LVIN"...

  • Page 19: Software Adjustments

    SOFTWARE ADJUSTMENT (RECEIVING) • Select an operation using [↑] / [↓]keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard • Need to adjust "S-METER ADJUSTMENT" after "RX SENSITIVITY ADJUSTMENT" is adjusted. Otherwise , "S-METER ADJUSTMENT" will not be adjusted properly. MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION...
  • Page 20 SECTION 6 PARTS LIST [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1110002750 S.IC TA75S01F (TE85R) 88.1/12.4 6070000190 S.DCR CDBCB450KCAY24-R0 80/16.9 1110005340 S.IC NJM12902V-TE1 55.4/23.8 6050011930 S.XTL CR-781 (15.3 MHz) 63.3/38.3 1110005770 S.IC S-80942CNMC-G9C-T2 20.8/41.5 6050011730 S.XTL CR-765 (3.6864 MHz) 38.3/4 1110003200 S.IC TA31136FN (EL)
  • Page 21 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 7030009320 S.RES ERJ2GEJ 4R7 X (4.7 Ω) 7030005000 S.RES ERJ2GEJ 471 X (470 Ω) 74.8/25.7 R235 83.5/5 7030008340 S.RES RR0510P-182-D (1.8 kΩ) 75.3/23.9 R236 7030005060 S.RES ERJ2GEJ 333 X (33 kΩ) 75.7/4.3 7030005530 S.RES ERJ2GEJ 100 X (10 Ω) 7030011000 S.RES RR0510P-392-D (3.9 kΩ)
  • Page 22 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R511 7030005210 S.RES ERJ2GEJ 822 X (8.2 kΩ) 36.5/17.8 C112 4030017750 S.CER ECJ0EB1E122K 35.5/7.7 R512 7030005210 S.RES ERJ2GEJ 822 X (8.2 kΩ) 35.2/17.7 C113 4030017540 S.CER ECJ0EC1HR75B 76.3/31.2 R513 7030005240 S.RES ERJ2GEJ 473 X (47 kΩ) 34.6/16.5 C114 4030017660 S.CER ECJ0EC1H330J...
  • Page 23 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C240 4030017460 S.CER ECJ0EB1E102K 56.8/29.8 C510 4550007040 S.TAN ECST0JZ106R 89.1/7.6 C241 4030017460 S.CER ECJ0EB1E102K 60.1/14.9 C511 4030016790 S.CER ECJ0EB1C103K 88.8/38.8 C242 4030017460 S.CER ECJ0EB1E102K 64.8/8.4 C512 4030016930 S.CER ECJ0EB1A104K 73.9/34 C302 4030016790 S.CER ECJ0EB1C103K 71.7/31...
  • Page 24 [PA UNIT] [PA UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C769 4030017520 S.CER ECJ0EC1H0R3B 34.5/16.7 Q701 1560001230 S.FET RD07MVS1 22.6/8.3 Q702 1560001240 S.FET RD01MUS1 16/8.3 Q704 1530003260 S.TR 2SC5006-T1 3.8/10.3 J701 6510024390 S.CNR IMSA-6176S-03Y900 6.3/9.7 J702 6910015890 CNR IMSA-9230B-1-02Z140-T D701 1750000580 S.DIO 1SV307 (TPH3) 33.9/12.8...

  • Page 25: Cabinet Parts

    SECTION 7 MECHANICAL PARTS AND DISASSEMBLY 7-1 CABINET PARTS [MAIN UNIT] [PA UNIT] REF. ORDER. NO. DESCRIPTION QTY. REF. ORDER. NO. DESCRIPTION QTY. 5030002760 L3-0200HAY-3 J702 6910015890 IMSA-9230B-1-02Z140-T [FUSE UNIT] 8930063020 SRCN-2721-SP-N-W REF. ORDER. NO. DESCRIPTION QTY. 6450002250 HSJ1456-010320 6450001680 HSJ1120-010010 J901 6910015880...
  • Page 26 MP25 ( C ) SP1 ( C ) MP30 ( C ) MP13(C) MP29 ( C ) W1 ( C ) J1(C) MP36(C) MP35(C) MP2 ( C ) MP8(C) MP31(C) MP20 ( C ) MP33 ( C ) MP12 ( C ) MP1(C) MP12 ( C ) MP38(C)
  • Page 27 SECTION 8 SEMICONDUCTOR INFORMATION • TRANSISTORS AND FET’S 2SA1577 Q 2SB1132 Q 2SC3356 2SC4116 BL 2SC4215 O (Symbol: HP) (Symbol: BAQ) (Symbol: R22) (Symbol: LL) (Symbol: QO) 2SC4226 R25 2SC5006 2SK880 Y 2SK1829 2SK3019 (Symbol: R25) (Symbol: 24) (Symbol: XY) (Symbol: K1) (Symbol: KN) 3SK293...

  • Page 28: Section 9 Board Layouts

    SECTION 9 BOARD LAYOUTS 9-1 MAIN UNIT Horizontal • TOP VIEW OPT2 OPT1 RES +5V MD2 GND B6194B R303 R302 R525 R173 C176 C186 R130 R172 C399 IC21 R175 C155 R526 C390 R307 C508 C506 C110 C139 R116 C109 R502 R101 Q500 C401...
  • Page 29 • BOTTOM VIEW Horizontal R121 C136 R123 C142 C352 C515 C171 C147 R104 IC19 IC23 R104 C511 S2 MP1 C357 C159 C336 C347 R245 R185 C351 R181 C345 C225 R244 R262 R257 R289 C380 R184 C509 C350 C105 C335 R240 R263 R256 C371...

  • Page 30: Pa Unit

    9-2 PA UNIT • TOP VIEW C733 C732 C746 D705 C768 C708 R735 C742 L705 L703 C727 EP711 D701 C761 R732 L708 R730 MP701 C731 R715 R737 R733 9-3 ANT UNIT 9-4 FUSE UNIT • • TOP VIEW TOP VIEW J901 J901 J1 (CHASSIS u...
  • Page 31 • BOTTOM VIEW to the FUSE unit J702 to the MAIN unit ANT unit C752 C750 D703 R736 L702 C748 R729 R738 J701 R708 to the MAIN unit C704 Q702 C718 B6195B Horizontal • • BOTTOM VIEW BOTTOM VIEW 9 - 4...

  • Page 32: Block Diagram

    SECTION 10 BLOCK DIAGRAM 136-174 MHz Q18: XP1214 Q19: UNR9213J RX VCO Q17: 2SC5006 RIPPLE PA UNIT ANT UNIT D11: D9, D500 HVC376B HVC376B Q20: 2SC4116 IC25: D8: MA2S111 RLVA TC7S66FU CR-781 Q15: Q29: D16, D17: Q704: Q702: Q701: D701: 1SV307 D701: IC24: 15.3 MHz...

  • Page 33: Voltage Diagram

    R114 82 k 2SK3019 TXINO RXLPFO 0.0027 UNR9213J LIMLV RXAF R523 1 k EXTLMIN RXAFIN EXPOUT C128 0.1 R106 1M TCLK IC-F33GT/F43GT TDATA XOUT CP4 R118 DI/O BEEP CR–765 RDF/FC SCLK 220 k R242 330 k 3.6864 MHZ C380 R289 IC10...
  • Page 34 TPC6103 C: 4.0 RX VCO C515 2SC4116 BL 33 P C: 3.9 C404 0.01 C: 3.8 6.8 k 3.9 k R104 R103 680 k VCON C126 T: 2.0 2SK880 Y 47 k 33 P R: 0.0 R516 100 k R108 C156 C191 100 P...

  • Page 35: Pa/Ant/Fuse Units

    11-2 PA / ANT / FUSE UNITS J1(CHASSIS) FUSE J901 9230B-1_02Z141-T L901 L802 BLM21P300S VCC1 C801 to LPF 0.001 50 nH F701 L801 32 nH C802 C807 10 P C745 1.5 P L709 54 nH D703 RB706F-40 C742 0.001 R726 4.7 k L706 EXCCL3225U...
  • Page 36 E-mail : info@icomcanada.com Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K. Phone : +44 (01227) 741741 Fax : +44 (01227) 741742 Icom (Australia) Pty. Ltd. : http://www.icomuk.co.uk E-mail : info@icomuk.co.uk A.B.N. 88 006 092 575 290-294 Albert Street, Brunswick, Victoria, 3056, Australia Icom France S.a...
  • Page 37 S-14113IZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan © 2004 Icom Inc.

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