Icom IC-F6021 Service Manual
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Icom IC-F6021 Service Manual

Uhf mobile transceiver
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UHF MOBILE TRANSCEIVERS
S-14601XZ-C1
May. 2009

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Summary of Contents for Icom IC-F6021

  • Page 1 UHF MOBILE TRANSCEIVERS S-14601XZ-C1 May. 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], [CHN] [EXP] [EUR] • Frequency coverage 400–470 MHz • Type of emission Wide 16K0F3E (25.0 kHz) Middle – 14K0F3E (20.0 kHz) Narrow 11K0F3E (12.5 kHz) 8K50F3E (12.5 kHz) • Number of programable channels 128 channels (8 zones) 50 Ω...
  • Page 5 [USA], [CHN] [EXP] [EUR] • Receive system Double-conversion superheterodyne • Intermediate frequencies 1st IF; 46.35 MHz, 2nd IF; 450 kHz • Sensitivity −4 dBμV (EMF) typ. 0.25 μV typ. at 12 dB SINAD at 20 dB SINAD 0.25 μV typ. •...
  • Page 6 SECTION 2. INSIDE VIEWS • FRONT UNIT RESET IC (IC2) EEPROM (IC3) CLOCK FREQUENCY SHIFT DIODE (D6) (IC1) LCD DRIVER (IC6) TONE FILTER SWITCH (Q3) BACKLIGHT DRIVER (Q1) BACKLIGHT CONTROLLER DIMMER CONTROLLER (Q5) (Q2) TONE LPF (IC5) 2 - 1...
  • Page 7 • MAIN-A UNIT (TOP VIEW) AF AMP (IC8) +8 LINE REGULATOR (IC9) CPU5 LINE REGULATOR (IC10) POWER SWITCH (Q23) POWER SWITCH (Q24) PLL CIRCUIT 1ST IF FILTER (FI1) APC AMP (IC2) IF IC (IC1) DISCRIMINATOR SWITCH (Q5) 2ND IF FILTER SWITCH (Q40) (Q39) 2 - 2...
  • Page 8 • MAIN-A UNIT (BOTTOM VIEW) +5V LINE REGULATOR T8 LINE REGULATOR (Q27,Q28) (Q25) AF MUTE SWITCH (Q35, Q36) Ext. MODULATION LINE SWITCH (Q31) DRIVE AMP REFERENCE OSCILLATOR (Q9) MODULATION AMP (IC19) REFERENCE FREQUENCY OSCILLATOR (X2) D/A CONVERTER (IC20) 1ST MIXER (Q3) DISCRIMINATOR (X1)
  • Page 9 SECTION 3. DISASSEMBLY INSTRUCTION 1) Unscrew 4 screws from the top cover, and remove the top 5) 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-108R as follows; Install optional OPC-1939 as follows; 1) Turn the transceiver power OFF, then disconnect the DC 1) Turn the transceiver power OFF, then disconnect the DC power cable. power cable. 2) Unscrew 4 screws, then remove the bottom cover. 2) Unscrew 4 screws, then remove the bottom cover.

  • 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 The applied VCO output is divided according to the serial VCOs data including divide ratio from the CPU, at the prescaler The TX VCO which generates TX signal is composed by and programmable divider. In the same way, the reference Q13, D16, 64 and 65, and the frequency modulation is frequency signal from the reference frequency signal carried out by applying modulation signals to D18.

  • 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, KR1− 1−3 Input ports for dealer-programmable keys. pin 9) and D/A converters (IC17, pin 3/IC18, pin 8/ IC20, pin 7).

  • Page 16: Section 6 Adjustment Procedure

    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 13.2 V DC [EUR]...
  • Page 17 M ADJUSTMENT FREQUENCIES Before starting adjustment, clone adjustment frequencies and settings into the transceiver as below. • For [Low band] version (400–470 MHz) • For [High band] version (450–512/520 MHz) NOTE: FOR [F6022], when adjust “Deviation,” “Modulation Balance,” “RX SENSITIVITY” and “S-meter”...
  • Page 18 M CONNECTION Oscilloscope Modulation analyzer RF power meter Standard signal generator (DC measurable) 30 W [25 W ver.] –90 to +90 dBµ 60 W [50 W ver.] (–127 to –17 dBm) Attenuator Frequency 40 dB or 50 dB counter CAUTION: DO NOT transmit while to the antenna connector SSG is connected to...

  • Page 19: Frequency Adjustment

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

  • Page 20: Transmit Adjustment

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

  • Page 21: Receive Adjustment

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

  • Page 22: Section 7 Parts List

    SECTION PARTS LIST [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110003491 S.IC TA31136FNG(D,EL) 57.8/24.7 1750000711 S.VAR HVC350BTRF-E 106.5/21.7 1110002751 S.IC TA75S01F(TE85R,F) 60/54.9 1750000711 S.VAR HVC350BTRF-E 103.5/24.9 1150002380 IC RA30H4047M1-101 [EUR-01] 1750000370 S.DIO DA221 TL 34.6/37.8 1150002380 IC RA30H4047M1-101 [EXP-01] 1790001241 S.DIO...
  • Page 23 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005050 S.RES ERJ2GEJ 103 X (10K) 54.1/41.2 R130 7030005220 S.RES ERJ2GEJ 223 X (22K) 29/24.3 7030005570 S.RES ERJ2GEJ 820 X (82) 74/40.6 R133 7030005090 S.RES ERJ2GEJ 104 X (100K) 30.8/24.3 7030005000 S.RES ERJ2GEJ 471 X (470) 71.3/40.6 R134...
  • Page 24 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R308 7030009140 S.RES ERJ2GEJ 272 X (2.7K) 56.9/54.9 4030017370 S.CER ECJ0EC1H3R5B 59.9/40.5 R311 7030010040 S.RES ERJ2GEJ-JPW 94.9/32.2 4030017620 S.CER ECJ0EC1H100C 55.5/42 R313 7030005160 S.RES ERJ2GEJ 105 X (1M) 31.4/6.8 4030017420 S.CER ECJ0EC1H470J 72.2/40.6 R314 7030005090 S.RES ERJ2GEJ 104 X (100K)
  • Page 25 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C140 4030016930 S.CER ECJ0EB1A104K 83.2/28.7 C289 4030018860 S.CER ECJ0EB0J105K 114.9/15.1 C141 4030017460 S.CER ECJ0EB1E102K 77.9/22.2 C290 4030017460 S.CER ECJ0EB1E102K 114.9/16.9 C142 4030017460 S.CER ECJ0EB1E102K 77.3/15.3 C291 4030017460 S.CER ECJ0EB1E102K 114.9/14.2 C143 4030017460 S.CER ECJ0EB1E102K 78.8/22.2...

  • Page 26: Front Unit

    [MAIN-A UNIT] [FRONT UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C453 4030017420 S.CER ECJ0EC1H470J 101.3/35.3 1140015190 S.IC HD6432238BB45TFV C454 4030017460 S.CER ECJ0EB1E102K 100.4/35.3 (FX-3179A-2) 67.8/23 C455 4030018860 S.CER ECJ0EB0J105K 37.8/16.6 1110005771 S.IC S-80942CNMC-G9CT2G 89.1/19.3 C457 4030017420 S.CER ECJ0EC1H470J 71.9/34.8 1130012430 S.IC S-24CS64A0I-T8T1G 90.2/15.7 C458...
  • Page 27 [FRONT UNIT] PARTS DESCRIPTION LOCATION R124 7030005120 S.RES ERJ2GEJ 102 X (1K) 58.9/18.2 R125 7030005120 S.RES ERJ2GEJ 102 X (1K) 58.9/19.1 R127 7030005160 S.RES ERJ2GEJ 105 X (1M) 78/28.5 R128 7030005050 S.RES ERJ2GEJ 103 X (10K) 30.9/25.2 R129 7030005120 S.RES ERJ2GEJ 102 X (1K) 23.5/18.3 4030018100 S.CER ECJ0EB1H681K 42.2/15.2...

  • Page 28: Section 8 Mechanical Parts

    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], [EXP-01] (Optional) OPC-1132A [USA-01], [EXP-03], [CHN-01] 8010019065 2601 CHASSIS-5 [EUR-01], [EXP-01] 8900000731 OPC-049A 8010019135 2601 LONG CHASSIS-5 [USA-01], [EXP-03], [CHN-01] 8010019151 2601 MOBIL BRACKET-1 (Incl.
  • Page 29 MP4 (C) x2 MP8 (C) x2 J1 (C) W2 (MA) MP1 (C) J4 (MA) MP2 (MA) MP1 (MA) MAIN UNIT IC8 (MA) IC3 (MA) MP3 (MA) MP6 (C) MP5 (C) x2 MP5 (MA) MP3 (F) R14 (F) MP12 (F) MP3 (C) MP13 (F) x3 MP3 (C) x8 MP9 (F)

  • Page 30: Section 9 Board Layouts

    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. ANTENNA CONNECTOR AF OUT • MAIN-A UNIT J1 (CHASSIS) (TOP VIEW) C342 R338 C362 R334 C411 -T8V C107 R199...
  • 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) C402 C344 C368 C345 C367 C366 C259 C258 -T8V C409 C261 C332 R202 C106 C408 R203 R329 C272 C276 C256...

  • Page 32: General Wiring

    SECTION 10 GENERAL WIRING FRONT UNIT MAIN-A UNIT CHASSIS UNIT ANT CONNECTOR UT-108R UT-109R UT-110R SP JACK OPV1 W1(FRONT) EXST(OPV2) OPC-1046B-1 DAST(OPV3) (8900010503) OPT3 TONE DAST TONE DAST OPT2 CIRQ OPT3 TENC OPT3 OPT1 TENC OPT2 NOIS OPT2 SIGO NOIS EXOE OPT1 EXOE...

  • Page 33: Block Diagram

    SECTION 11. BLOCK DIAGRAM Q15:XP1214 2SC4116 Q16:DTC144EU MAIN-A UNIT RIPPLE 2SK880 RX VCO RA30H4047M1 (25W) Q14:2SC4226 RA30H4552M1 (25W) LVIN D52:HVC350B D33:HVC350B BUFF D3:L407CD RA60H4047M1 (45W) D5:L709CE RLVA D14,D15 RA60H4452M1 (45W) D6:1SV307 IC19 2SC5107 2SC5107 1SV307,MA2S077 2SC5006 2SC3357 TA75S01F CR-794 MB15A02 TX/RX DRIVE BUFF...

  • Page 34: Voltage Diagram

    SECTION 12 SECTION VOLTAGE DIAGRAM FRONT UNIT DS11 A01B011X CR-774 R101 MA2S077G0 C104 CPU5V R106 C102 OU T C107 0.027 C103 CSFT S-80942CNMC HANG R119 DAST (OPV3) R118 (IGSW/DIM) PTTI PTTO AFVI NOIS R117 TEMP SML-311YT SML-311YT SML-311YT MA2S1110G SML-311YT COM3 SEG22 SML-311YT...
  • Page 35 MAIN-A UNIT (1/2) R287 R232 C280 DTC363EK 470k 0.01 R197 R370 MA2S1110G RX AF HPF AFOUT R117 R116 CPU5V C PU5V 120k R355 NJM12902V CF20 R382 R330 R285 C249 C169 C168 C167 IC16 H:AFON L:MUTE IC14 DISC D TC144EU 0.0022 I /O1 0.047 0.047...
  • Page 36 MAIN-A UNIT (2/2) 3179 MMZ1005Y102CT MP 1 RX VCO 2SC4116 EP13 RA45H4452M MMZ1005Y102C T 6.8k 6.8k EP10 C127 C126 ERDS2T0 R339 AS080340 L407CD AS080340 AS080340 AS080340 AS080340 CPU5V CPU5V C332 R337 2SC4226 0.001 C113 C102 C100 R293 EP11 RLVA 0.75P 3.5P 1SV307 390k...
  • 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-14601XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2009 Icom Inc.

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