Icom IC-F14 Service Manual
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Icom IC-F14 Service Manual

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SERVICE
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VHF TRANSCEIVERS
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Summary of Contents for Icom IC-F14

  • Page 1 SERVICE MANUAL VHF TRANSCEIVERS iC-f14 iC-f14s iC-f15 iC-f15s...
  • Page 2 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 3: Table Of Contents

    TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTIONS SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS ........... . . 4-1 TRANSMITTER CIRCUITS .

  • Page 4: Specifications

    11K0F3E (12.5 kHz) 16K0F3E (25.0 kHz) [EUR] 14K0F3E (20.0 kHz) 8K0F3E (12.5 kHz) • Number of conventional channels : 2 ch (IC-F14S/F15S), 16 ch (IC-F14/F15) : 50 Ω • Antenna impedance • Operating temperature range : –30˚C to +60˚C (–22˚F to +140˚F) [USA], [GEN] –25˚C to +55˚C...
  • Page 5 SECTION 2 INSIDE VIEWS • MAIN UNIT TOP VIEW BOTTOM VIEW TX/RX switches (D14, D15: MA2S077) Pre-driver (Q9: 2SC5110) Power amplifier (Q7: RD07MVS1) AF amplifier (IC12: TA7368F) +5 Regulator S5 Regulator (IC9: NJM2870) Q23: 2SB1132 Q24: XP6501 Q25: UNR9113J T5 Regulator (Q21: 2SA1577) Crystal filter Mute switch...

  • Page 6: Section 3 Disassembly Instructions

    • • REMOVING THE MAIN UNIT (IC-F14S/F15S) REMOVING THE MAIN UNIT (IC-F14/F15) 1 Remove the switch connector M. 1 Unscrew 2 nuts F, and remove the top plate G. 2 Unscrew 2 nuts F, and remove the top plate G.

  • Page 7: Receiver Circuits

    SECTION 4 CIRCUIT DESCRIPTION The RF signals from the bandpass filter are mixed with 4-1 RECEIVER CIRCUITS the 1st LO signals, where come from the RX VCO circuit 4-1-1 ANTENNA SWITCHING CIRCUIT via the attenuator (R26–R28), at the 1st mixer circuit (Q3) The antenna switching circuit functions as a low-pass filter to produce a 46.35 MHz 1st IF signal.

  • Page 8: Transmitter Circuits

    4-1-5 AF AMPLIFIER CIRCUIT • CTCSS AND DTCS The tone squelch circuit detects tone signals and opens the The AF amplifier circuit amplifies the demodulated AF sig- squelch only when receiving a signal containing a matched nals to drive a speaker. subaudible tone (CTCSS or DTCS).
  • Page 9 4-2-4 APC CIRCUITS 4-2-2 MODULATION CIRCUIT The APC circuit (IC2, D1) protects drive and power ampli- The modulation circuit modulates the VCO oscillating signal (RF signal) using the microphone audio signals. fiers from the reflected signal, and selects output power of The AF signals from the D/A converter (IC8, pin 3) change HIGH, LOW2 or LOW1.

  • Page 10: Pll Circuits

    4-3-2 VCO CIRCUIT 4-3 PLL CIRCUITS The VCO circuit contains a separate RX VCO (Q14, D19, 4-3-1 PLL CIRCUIT D20) and TX VCO (Q13, D16, D17). The oscillated signal A PLL circuit provides stable oscillation of the transmit is amplified at the buffer amplifiers (Q10, Q12) and is then frequency and receive 1st LO frequency.

  • Page 11: Other Circuits

    4-6 PORT ALLOCATION 4-4 OTHER CIRCUITS LED CONTROL CIRCUITS 4-6-1 D/A CONVERTER IC (IC8) The LED control circuit is composed of the CPU (IC13), Port LED driver (Q32) and LED (DS1). Description number name Outputs the modulation balance level The CPU outputs “RLED” and “TLED” signals from the pins control signal.
  • Page 12 4-6-2 CPU (IC13) Port Port Description Description number name number name Input port for the transceiver’s RLED Outputs receiving LED control signal. TEMP internal temperature detecting Outputs transmitting LED control signal. TLED signal. Input port for the detect signal for BATV connecting battery pack’s voltage.

  • Page 13: Section 5 Adjustment Procedures

    : Less than 1.2 : 1 AC millivoltmeter Measuring range : 10 mV–10 V STARTING SOFTWARE ADJUSTMENT SYSTEM REQUIREMENTS (1) Connect IC-F14 and PC with OPC-478/U and JIG CABLE. ® ® • Microsoft Windows 98/SE/ME/2000/XP (2) Turn the transceiver power ON.
  • Page 14 5-2 CONFIGULATION LIST FOR ADJUSTMENTS - IC-F14/F15 - CHANNEL FREQUENCY SETTING CONDITION CHANNEL FREQUENCY SETTING CONDITION Set TX power to Low1. Set TX power to High. 174.000 MHz 155.000 MHz Set IF bandwidth to Narrow. Set TX power to Low2.
  • Page 15 Attenuator to USB port deviation meter 20 dB / 30 dB RF power meter 0.1–10 W/50 Ω To [SP] Frequency connector counter SINAD meter JIG cable To [SP] (see page 5-1) Speaker (8 Ω) IC-F14/F15/S 5 - 3...
  • Page 16 (PC SCREEN EXAMPLE NOTE: The above screen is an example. Each transceiver has its own specific values for each setting. 5 - 4...
  • Page 17 5-3 SOFTWARE ADJUSTMENTS (TRANSMITTING) Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard. MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION PLL LOCK • Operating CH : CH3 (*CH1) Check the “LV”...

  • Page 18: Software Adjustments

    SOFTWARE ADJUSTMENTS (RECEIVING) • Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard. MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION • Operating CH : CH9 Side Connect a SINAD meter with Minimum distortion an 8 Ω...

  • Page 19: Parts List

    SECTION 6 PARTS LIST [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1110003200 S.IC TA31136FN (EL) 51.8/19 1750000720 S.VCP HVC375BTRF 49.2/34.9 1110002750 S.IC TA75S01F (TE85R) 68.9/21 1790001250 S.DIO MA2S111-(TX) 70.5/40.4 1140005990 S.IC MB15A02PFV1-G-BND-ER 38.3/35.7 1790001250 S.DIO MA2S111-(TX) 41.5/39.2 1110005340 S.IC NJM12902V-TE1 29.7/11.6...
  • Page 20 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005050 S.RES ERJ2GEJ 103 X (10 k 80.6/35.7 7030008280 S.RES ERJ2GEJ 271 X (270 47/36.8 7030005310 S.RES ERJ2GEJ 124 X (120 k 79.8/39 7030007290 S.RES ERJ2GEJ 222 X (2.2 k 53.7/44 7030008280 S.RES ERJ2GEJ 271 X (270...
  • Page 21 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R183 7030006020 S.RES RR0510P-682-D (6.8 k 17.6/39.5 R287 7030007280 S.RES ERJ2GEJ 331 X (330     18.5/24.7 R184 7030008250 S.RES RR0510P-562-D (5.6 k 17.6/41.2 R288 7030005030 S.RES ERJ2GEJ 152 X (1.5 k 14.7/23.1 R185 7030005100 S.RES...
  • Page 22 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 4030017460 S.CER ECJ0EB1E102K 46.5/18.6 C152 4030017420 S.CER ECJ0EC1H470J 35.3/41.1 4030017460 S.CER ECJ0EB1E102K 47.5/13.7 C153 4030017420 S.CER ECJ0EC1H470J 37/41.1 4030017460 S.CER ECJ0EB1E102K 53.9/22.3 C154 4030017420 S.CER ECJ0EC1H470J 37.8/39.1 4030017430 S.CER ECJ0EC1H101J 51.8/13.7 C155 4030017460 S.CER...

  • Page 23: Ant Unit

    [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C258 4030017790 S.CER ECJ0EB1E682K 30.6/39.1 6510021900 S.CNR BM02B-ASRS-TF 86.6/6.8 C259 4030018860 S.CER ECJ0EB0J105K 26.9/41.1 6450001680 CNR HSJ1122-010010 C260 4030017730 S.CER ECJ0EB1E471K 28.6/39.1 6450002250 CNR HSJ1456-010320 C261 4030016930 S.CER ECJ0EB1A104K 26.9/40.1 6510018430 S.CNR AXN330C038P 11.8/30.6...

  • Page 24: Cabinet Parts

    SECTION 7 MECHANICAL PARTS AND DISASSEMBLY 7-1 CABINET PARTS [MAIN UNIT] [ACCESSORIES] REF. NO. ORDER NO. DESCRIPTION QTY. REF. NO. ORDER NO. DESCRIPTION QTY. 6450001680 HSJ1122-010010 3310002321 FA-SC55V-1 6450002250 HSJ1456-010320 0800007540 BP-231 ACC R226 7210003060 TP76N00N-15F-10KA-2251 8010019540 MB-94 ACC R315 7210003060 TP76N00N-15F-10KA-2251 8210020560 2721 JACK PANEL 8810004860 Screw M2 x 6 ZK...
  • Page 25 MP21 ( C ) MP34 ( C ) MP22 ( C ) 31 (1 1.7 ( 1.7 ( 7/32 1/16 1/16 *: IC-F14/F15 only MP2 ( C ) 17.8 ( 38 (1 11/16 4.8 ( 53 (2 3/16 3/32 3/32...
  • Page 26 SECTION 8 SEMI-CONDUCTOR INFORMATION • TRANSISTOR AND FET’s 2SA1576 R 2SA1577 Q 2SA2048TL R 2SB1132 R 2SC4081 R (Symbol: FR) (Symbol: HP) (Symbol: UL) (Symbol: BARB) (Symbol: BR) 2SC4116 BL 2SC4226 R25 2SC5107 2SC5110 2SK1829 (Symbol: LL) (Symbol: BR) (Symbol: MFO) (Symbol: MGO) (Symbol: K1) 2SK3019...
  • Page 27 SECTION 9 BOARD LAYOUTS 9-1 MAIN UNIT • TOP VIEW Horizontal C148 C259 R155 C256 R152 C152 C153 R124 R181 C285 R180 C261 R156 R154 R153 R117 R118 R168 R237 C284 R182 R157 C260 C258 C257 C154 R122 C186 C184 C126 C116 R121...
  • Page 28 • BOTTOM VIEW R107 C209 C135 C208 R101 C207 C143 C287 C109 C206 C205 C141 R100 OPV1 C111 OPV2 C175 DAST C222 CIRQ OPT3 C138 OPT2 CP10 R113 OPT1 DISC R160 SIGO C202 CP11 C289 BUSY BEEPO C176 C203 AFONO MCIN CP12 C160...

  • Page 29: Block Diagram

    SECTION 10 BLOCK DIAGRAM 136-174 MHz Q18: Q17: Q15: XP1214 2SK880 2SC4116 Q16: UNR9213J Q14: 2SC4226 D19, 20: HVC376B LVIN RIPPLE BUFF D22: HVC375B RX VCO IC7: CR-783 Q39: 2SC4081 Q12: Q10: D14, D15: D2: 1SV307 RD07MVS1 NJM12902 15.3 MHz Q40: 2SA1576 2SC5107 2SC5107...
  • Page 30 SECTION 11 VOLTAGE DIAGRAM 11-1 MAIN UNIT VCO5 C: 4.3 RX VCO C: 4.8 1.8 k C: 3.9 C211 R102 R103 T: 1.7 2SC4116 BL 270 k EXCCL3225U R: 0.0 J1(CHASSIS) C127 3.9 k BM02B-ASRS-TF CR-783 47 P 68 nH ERJ2GE-JPW T: 4.7 NJM12902V...
  • Page 31 Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K. Phone : +44 (01227) 741741 Fax : +44 (01227) 741742 : http://www.icomuk.co.uk Icom (Australia) Pty. Ltd. 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 32 S-14111IZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan © 2004 Icom Inc.

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