Icom ic-f5021 Service Manual
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Icom ic-f5021 Service Manual

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VHF MOBILE TRANSCEIVERS
S-14524XZ-C1
Feb. 2009

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  • Page 1 VHF MOBILE TRANSCEIVERS S-14524XZ-C1 Feb. 2009...
  • Page 2 8. READ the instructions of test equipment throughly before connecting a test equipment to the transceiver. 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.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTION SECTION OPTIONAL UNIT INSTALLATION SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS............5-1 TRANSMITTER CIRCUITS .

  • Page 4: Specifications

    SECTION 1. SPECIFICATIONS [USA], [RUS], [CHN], [EXP] [EUR] • Frequency coverage 136–174 MHz [USA], [CHN], [EXP] 136–174 MHz 146–174 MHz [RUS] • Type of emission Wide 16K0F3E (25.0 kHz) Middle – 14K0F3E (20.0 kHz) Narrow 11K0F3E (12.5 kHz) 8K50F3E (12.5 kHz) •...
  • Page 5 [USA], [RUS], [CHN], [EXP] [EUR] • Receive system Double-conversion superheterodyne • Intermediate frequencies 1st IF; 46.35 MHz, 2nd IF; 450 kHz 0.25 μV typ. at 12 dB SINAD • Sensitivity −4 dBμV (EMF) typ. at 20 dB SINAD 0.25 μV typ. •...
  • Page 6 SECTION 2. INSIDE VIEWS • FRONT UNIT RESET IC (TOP VIEW) (IC2) EEPROM (IC3) CLOCK FREQUENCY SHIFT DIODE (D6) (IC1) LCD DRIVER (IC6) TONE FILTER SWITCH (Q3) BACKLIGHT DRIVER (Q1) BACKLIGHT CONTROLLER (Q5) DIMMER CONTROLLER (Q2) TONE LPF (IC5) 2 - 1...
  • Page 7 • MAIN-A UNIT (TOP VIEW) +8 REGULATOR (IC9) CPU5 LINE REGULATOR (IC10) POWER SWITCH (Q23) POWER SWITCH (Q24) RIPPLE FILTER (Q17) R8 REGULATOR VCO SWITCH (Q30) (Q15) LOCK VOLATGE BUFFER (Q18) PLL IC (IC4) 1ST IF FILTER (FI1) APC AMP (IC2) IF IC (IC1)
  • Page 8 • MAIN-A UNIT (BOTTOM VIEW) +5V REGULATOR T8 REGULATOR (Q27,Q28) (Q25) AF POWER AMP (IC8) AF MUTE SWITCH (Q35, Q36) Ext. MODULATION LINE SWITCH (Q31) DRIVE AMP (Q9) REFERENCE OSCILLATOR MODULATION AMP (IC19) REFERENCE FREQUENCY OSCILLATOR (X2) D/A CONVERTER (IC20) 1ST MIXER (Q3) 2ND IF FILTER...
  • Page 9 SECTION 3. DISASSEMBLY INSTRUCTION 1) Unscrew 4 screws from the top cover, and remove the top 6) Unsolder total of 9 points; 3 points at the antenna cover. connector, 6 points at the PA module. 2) Disconnect the fl at cable and speaker cable. 3) Unscrew 2 screws from the both sides, and remove the UNSOLDER front panel in the direction of the arrow.
  • Page 10 SECTION 4 OPTIONAL PRODUCTS INSTALLATION Install optional UT-108 as follows; Install optional OPC-1939 as follows; 1) Turn the transceiver OFF, then disconnect the DC cable. 1) Turn the transceiver OFF, then disconnect the DC power 2) Unscrew 4 screws, then remove the bottom cover. cable.

  • Page 11: Receiver Circuits

    SECTION 5. CIRCUIT DESCRIPTION 5-1 RECEIVER CIRCUITS 2ND IF AND DEMODULATOR CIRCUITS RF CIRCUITS The amplified 1st IF signal is mixed with the 2nd LO signal RF signals from the antenna are passed through the LPF (as at the internal 2nd IF mixer of the IF IC (IC1), to obtain the the harmonic filter for transmitting) and antenna SW, then 450 kHz 2nd IF signal.
  • Page 12 AF CIRCUITS SIGNALING (DECODING) The demodulated AF signals from the IF IC (IC1) are Demodulated signals from pin 9 of the IF IC (IC1) are amplified and filtered by the HPF (IC16), and passed passed through the LPF to extract tone signals contained in through the AF line SW (IC14) and LPF (IC16).

  • Page 13: Transmitter Circuits

    5-2 TRANSMITTER CIRCUITS CTCSS/DTCS SIGNALS ENCODING (FRONT UNIT) MIC AMPLIFIER (FRONT UNIT) The CTCSS/DTCS encoding signals from the CPU (IC1) Audio signals from the connected microphone are applied to “CENC0–CENC2” are passed through the LPF (IC5) for the MIC AMP (IC5) via the microphone connector (J1). The waveform conversion, and applied to the MAIN UNIT as tone amplifi...

  • Page 14: Frequency Synthesizer Circuits

    5-3 FREQUENCY SYNTHSIZER CIRCUITS VCOs The applied VCO output is divided according to the serial The TX VCO which generates TX signal is composed data including divide ratio from the CPU, at the prescaler by Q13, D16, D31, L25, L38, etc., and the frequency and programmable divider.

  • Page 15: Port Allocations

    5-5 PORT ALLOCATIONS 5-5-1 CPU (FRONT UNIT; IC1) Port Port Description Description Name Name Outputs serial clock signal to the PLL IC (IC4, pin KR1− 1−3 Input ports for dealer-programmable keys. 9) and D/A converters (IC17, pin 3/IC18, pin 8/ IC20, pin 7).

  • Page 16: Preparation

    SECTION 6. ADJUSTMENT PROCEDURE 6-1 PREPARATION M REQUIRED EQUIPMENTS EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Modifi ed OPC-1122U Cloning Software JIG Cable CS-F5020 : Revision 1.0 or later (see the illust below) Output voltage : 13.6 V DC except [EUR] Power attenuation : 40 or 50 dB DC Power Supply...
  • Page 17 M ADJUSTMENT FREQUENCIES Before starting adjustment, clone adjustment frequencies and settings into the transceiver as below. • For except [F5026] NOTE: FOR [F5022], when adjust “Deviation,” “Modulation Balance,” “RX SENSITIVITY” and “S-meter” in the middle band, change the bandwidth to “Middle” as below. Select “Middle”...
  • Page 18 M CONNECTION Oscilloscope Modulation analyzer RF power meter Standard signal generator (DC measurable) 30 W [25 W ver.] –127 to –17 dBm 60 W [50 W ver.] (0.1 V to 32 mV) Attenuator Frequency 40 dB or 50 dB counter CAUTION: DO NOT transmit while to the antenna connector...

  • Page 19: Frequency Adjustment

    6-2 FREQUENCY ADJUSTMENT 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT CONDITION OPERatio...

  • Page 20: Transmit Adjustment

    6-3 TRANSMIT ADJUSTMENT 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT CONDITION OPERatio...

  • Page 21: Receive Adjustment

    6-4 RECEIVE ADJUSTMENT 1) Select an adjustment item using cursor or [↑] / [↓] keys of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←] / [→] keys of the PC’s keyboard, then push the [ENTER] key. ADJUSTMENT ADJUSTMENT CONDITION LOCATION...

  • Page 22: Parts List

    SECTION 7. PARTS LIST [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110003491 S.IC TA31136FNG(D,EL) 57.8/24.7 1750000370 S.DIO DA221 TL 113.7/10.8 1110002751 S.IC TA75S01F(TE85R,F) 60/54.9 1750000370 S.DIO DA221 TL 113/7.1 1150002371 IC RA30H1317M1-121 [EUR-01] 1750000370 S.DIO DA221 TL 113/8.4 1150002371 IC RA30H1317M1-121...
  • Page 23 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005000 S.RES ERJ2GEJ 471 X (470) 77.9/40.6 R156 7030005040 S.RES ERJ2GEJ 472 X (4.7K) 116.6/21.9 7030010430 S.RES ERJ2GEJ 120 X (12) 78.5/39.3 R159 7030005050 S.RES ERJ2GEJ 103 X (10K) 117/17.4 7030005570 S.RES ERJ2GEJ 820 X (82) 73.5/40.6 R183...
  • Page 24 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R340 7030005050 S.RES ERJ2GEJ 103 X (10K) 76.9/23.9 4030016790 S.CER ECJ0EB1C103K 67.3/26 R341 7030007340 S.RES ERJ2GEJ 153 X (15K) 92.7/31.3 4030017430 S.CER ECJ0EC1H101J 61.6/23.1 R342 7030007340 S.RES ERJ2GEJ 153 X (15K) 91/31.3 4030017680 S.CER ECJ0EC1H820J 56.4/20.2...
  • Page 25 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C167 4030017920 S.CER ECJ0EB1A683K 13.4/21.5 C318 4030016930 S.CER ECJ0EB1A104K 22.2/24.6 C168 4030016950 S.CER ECJ0EB1A473K 13.4/22.4 C320 4030016940 S.CER ECJ0EB1A393K 29.1/18.6 C169 4030016950 S.CER ECJ0EB1A473K 15.1/21.5 C321 4030016930 S.CER ECJ0EB1A104K 27.5/18.6 C170 4030017460 S.CER ECJ0EB1E102K 19.7/23.5...

  • Page 26: Front Unit

    [MAIN-A UNIT] [FRONT UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C478 4030017460 S.CER ECJ0EB1E102K 72.2/37.7 1140015150 S.IC HD64F2238BTF13V (FX-3179A) 67.8/23 C479 4030017460 S.CER ECJ0EB1E102K 72/40.4 1110005771 S.IC S-80942CNMC-G9CT2G 89.1/19.3 C480 4030017460 S.CER ECJ0EB1E102K 73.9/40.4 1130012430 S.IC S-24CS64A0I-T8T1G 90.2/15.7 C481 4030017460 S.CER ECJ0EB1E102K 53.8/9.8 1110005340 S.IC NJM12902V-TE1-#ZZZB...
  • Page 27 [FRONT UNIT] PARTS DESCRIPTION LOCATION R127 7030005160 S.RES ERJ2GEJ 105 X (1M) 78/28.5 R128 7030005050 S.RES ERJ2GEJ 103 X (10K) 30.9/25.2 4030018100 S.CER ECJ0EB1H681K 42.2/15.2 4030017420 S.CER ECJ0EC1H470J 84/7.7 4030017420 S.CER ECJ0EC1H470J 28.5/6.1 4030017420 S.CER ECJ0EC1H470J 47.2/5 4030017420 S.CER ECJ0EC1H470J 56.4/5.5 4030017420 S.CER ECJ0EC1H470J 81/27.6...
  • Page 28 SECTION 8. MECHANICAL PARTS [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. 6510004880 MR-DSE-01 (Optional) HM-152 W1** 8900011800 OPC-1199 (Optional) OPC-1194A [EUR-01] (Optional) OPC-1194A [EXP-01] 8010019065 2601 CHASSIS-5 [EUR-01] (Optional) OPC-1194A [RUS-01] 8010019065 2601 CHASSIS-5 [EXP-01] (Optional) OPC-1132A [USA-01] 8010019065 2601 CHASSIS-5 [RUS-01] (Optional)
  • Page 29 MP4 (C) x2 MP8 (C) x2 J1 (C) W2 (MA) MP1 (C) J4 (MA) MAIN UNIT IC8 (MA) IC3 (MA) MP3 (MA) MP6 (C) MP5 (C) x2 MP1 (MA) MP3 (F) MP2 (MA) R14 (F) MP12 (F) MP3 (C) MP13 (F) x3 MP3 (C) x8 MP9 (F) J1 (F)
  • Page 30 SECTION 9. BOARD LAYOUTS The combination of top side and bottom side of this AF GND page shows the actual configuration of P.C. board. AF OUT ANT CONNECTOR • MAIN-A UNIT J1 (CHASSIS) (TOP VIEW) C471 C364 C372 C342 C401 R338 R334 C362...
  • Page 31 The combination of top side and bottom side of this page shows the actual configuration of P.C. board. • MAIN-A UNIT (BOTTOM VIEW) C468 C402 C469 C465 C456 C431 C380 C259 C381 C460 R387 C458 C459 C461 R388 C258 R386 R385 C409 -T8V...
  • Page 32 SECTION 10 GENERAL WIRING FRONT UNIT MAIN-A UNIT CHASSIS UNIT ANTENNA CONNECTOR EXT. SPEAKER JACK OPV1 EXST(OPV2) DAST(OPV3) OPT3 OPT2 TONE DAST TONE DAST CIRQ TENC OPT3 OPT3 OPT1 TENC NOIS OPT2 SIGO NOIS OPT2 BUSY EXOE OPT1 EXOE OPT1 EXST PTTO AFOUT...
  • Page 33 SECTION 11. BLOCK DIAGRAM Q15:XP1214 MAIN-A UNIT 2SC4116 Q16:UNR9213J 136-174 MHz RIPPLE 2SK880 RX VCO Q14:2SC4226 D2:UM9401F(25W) LVIN D52:HVC375B D33:HVC376B BUFF D3:L407CD D34:HVC376B D5:L709CE RA30H1317M (25W) RLVA D14,D15 D1,D11 D6:1SV307 RA60H4047M1 (50W) 2SC5006 2SC3356 IC19 AD J 2SC5006 MA2S077 D48:1SV307 1SS375 TA75S01F CR-794...
  • Page 34 SECTION 12. VOLTAGE DIAGRAM FRONT UNIT DS11 A01B011X CR-774 MA2S077G0 R101 C104 CPU5V R106 C102 OU T C107 C103 0.027 CSFT S-80942CNMC HANG R119 DAST (OPV3) R118 DI M (IGSW/DIM) PTTI PTTO AFVI NOIS R117 TEMP SML-311YT SML-311YT SML-311YT MA2S1110G SML-311YT COM3 SEG22...
  • Page 35 MAIN UNIT (1/2) R287 DTC363EK R197 MA2S1110G R370 RX AF HPF AFOUT R232 R116 C280 R117 D TC144EU CPU5V CPU5V 470K 180K R355 0.01 NJM12902V CF20 R382 R330 R285 C249 IC16 C169 C168 C167 H:AFON L:MUTE IC14 DISC 0.0022 I/O1 0.047 0.047 0.068...
  • Page 36 MAIN UNIT (2/2) 2SC4116 ERDS2T0 3179 MP 1 RX VCO AS080547 AS080547 3.9k 1.8K *EP3 0.001 R339 *EP2 L407CD AS080547 AS080547 C127 C126 CPU5V CPU5 V HF70B B4.5X 5X1.6 C6342A L43 47N R332 R333 2SC4226 C460 C113 5P C456 DRIVER R348 3.3U 0.001...
  • Page 37 Phone : +81 (06) 6793 5302 F ax : +81 (06) 6793 0013 : http://ww w .icom.c o .jp/ w o r ld/ind e x.html <Co r po r ate Headqua r ters> Communication Equipment 2380 116th A v e n ue N.E., Bell e vu e , W A 98004, U . S .A.
  • Page 38 S-14524XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2009 Icom Inc.

This manual is also suitable for:

Ic-f5026/hIc-f5022Ic-f5023/hIc-f5028hIc-f5023Ic-f5026

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