Icom IC-F5012 Service Manual
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Icom IC-F5012 Service Manual

Vhf mobile transceivers
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VHF MOBILE TRANSCEIVERS
S-14712XZ-C1
Feb. 2011

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Summary of Contents for Icom IC-F5012

  • Page 1 VHF MOBILE TRANSCEIVERS S-14712XZ-C1 Feb. 2011...
  • Page 2 8. READ the instructions of the test equipment throughly before connecting it to the transceiver. Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, 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 PRODUCTS INSTALLATION SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS............5-1 TRANSMITTER CIRCUITS .

  • Page 4: Specifications

    SECTION 1. SPECIFICATIONS [USA], [EXP] [EUR] • Frequency coverage 136–174 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 conventional channels 50 Ω (Nominal) • Antenna impedance •...
  • Page 5 [USA], [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. • Squelch sensitivity (At threshold) −4 dBμV (EMF) typ.

  • Page 6: Section 2 Inside Views

    SECTION 2. INSIDE VIEWS • FRONT UNIT TX/RX INDICATOR LED DRIVERS (Q13 and Q14) (IC1) CLOCK FREQUENCY SHIFT DIODE (D6) CPU CLOCK (X1) RESET IC (IC2) EEPROM (IC3) TONE FILTER SWITCH KEY BACKLIGHT DRIVER (Q3) (Q1) KEY BACKLIGHT SW (Q2) TONE FILTER (IC5) 2 - 1...
  • Page 7 • MAIN-A UNIT (TOP VIEW) +8V LINE REGULATOR CPU5 LINE REGULATOR (IC9) (IC10) VCC LINE SWITCH (Q23) RIPPLE FILTER (Q17) R8 LINE REGULATOR VCO SWITCH (Q30) (Q15) PLL IC (IC4) 1ST IF FILTER (FI1) APC AMP (IC2) IF DEMODULATOR IC (IC1) AF AMP 2ND IF FILTER...
  • Page 8 • MAIN-A UNIT (BOTTOM VIEW) +5V LINE REGULATOR T8 LINE REGULATOR (Q27) (Q25) AF MUTE SW (Q35) MODULATION LINE SW (Q31) DRIVE AMP REFERENCE OSCILLATOR (Q9) MODULATION BUFFER (IC19) REFERENCE FREQUENCY OSCILLATOR (X2) D/A CONVERTER (IC20) 1ST MIXER (Q3) 2ND IF FILTER (For wide mode) (FI2) EXPANDER...

  • Page 9: Disassembly Instruction

    SECTION 3. DISASSEMBLY INSTRUCTION 1) Remove 4 screws from the bottom cover, and then 5) Unsolder total of 9 points; 3 points at the antenna remove it. connector, 6 points at the PA module. 2) Disconnect the fl at cable and speaker cable. 3) Remove 2 screws from the both sides, and then remove UNSOLDER the front panel in the direction of the arrow.

  • Page 10: Section 4 Optional Products Installation

    SECTION 4 OPTIONAL PRODUCTS INSTALLATION Install optional UT-108R as follows: Install optional OPC-1939/OPC-2078 as follows: 1) Turn OFF the power, and then disconnect the DC cable. 1) Turn OFF the power, and then disconnect the DC power cable. 2) Remove 4 screws, and then remove the bottom cover. 2) Remove 4 screws, and then remove the bottom cover.

  • Page 11: Receiver Circuits

    SECTION 5. CIRCUIT DESCRIPTION 5-1 RECEIVER CIRCUITS 2ND IF AND DEMODULATOR CIRCUITS (MAIN-A UNIT) RF CIRCUITS (MAIN-A UNIT) The amplified 1st IF signal is mixed with the 2nd LO signal RF signal from the antenna is passed through the LPF (as at the internal 2nd IF mixer of the IF demodulator IC (IC1), the harmonic filter for transmitting) and antenna SW, and to obtain the 450 kHz 2nd IF signal.
  • Page 12 AF CIRCUITS (MAIN-A UNIT) SIGNALING (DECODING) (MAIN-A UNIT) The demodulated AF signal from the IF demodulator IC (IC1) Demodulated signal from the pin 9 of the IF demodulator is amplified by the AMP (IC21), filtered by the HPF (IC16), IC (IC1) is passed through the LPF to extract tone signals and then passed through the AF line SW (IC14) and LPF contained in the demodulated signal.

  • Page 13: Transmitter Circuits

    5-2 TRANSMITTER CIRCUITS MIC AMPLIFIER (FRONT UNIT) CTCSS/DTCS SIGNALS ENCODING (FRONT UNIT) Audio signal from the connected microphone is applied to The CTCSS/DTCS encoding signal from the CPU (IC1) the MIC AMP (IC5), through the microphone connector (J1). “CENC0–CENC2” is passed through the LPF (IC5) for The amplifi...

  • Page 14: Frequency Synthesizer Circuits

    5-3 FREQUENCY SYNTHSIZER CIRCUITS PLL (MAIN-A UNIT) VCOs (MAIN-A UNIT) The applied VCO output is divided according to the serial The TX VCO which generates the 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 • CPU (FRONT UNIT; IC1) Port Port Description Description Name Name Serial clock signal to the PLL IC (IC4, pin 9) KR1− 1−3 Dealer-programmable keys input. and D/A converters (IC17, pin 3/IC18, pin 8/ IC20, pin 7). Chip-select signal to the attached optional unit.

  • 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-F5010 : Revision 1.0 or later (see the illust below) Output voltage : 13.6 V DC except [EUR] Power attenuation : 50 or 60 dB DC Power Supply...
  • Page 17 M ADJUSTMENT FREQUENCIES Before starting adjustment, clone adjustment frequencies and settings into the transceiver as below. CONVENIENT: The cloning data fi le for the adjustment, as described in this service manual, is attached. Right click the clip icon, and select “Save Embeded File to Disk.” NOTE: FOR [EUR] versions, when adjust “Deviation,”...
  • 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 50 dB or 60 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 [↑]/[↓] of the PC’s keyboard. 2) Set or modify the adjustment value as specifi ed using [←]/[→] of the PC’s keyboard, then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM PLL LOCK...

  • 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]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM OUTPUT...

  • 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]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RECEIVE...

  • Page 22: Parts List

    SECTION 7. PARTS LIST [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110007320 S.IC NJM2591V-TE1-#ZZZB 67.8/23 1750001910 S.DIO HVD144AKRF-E 51.5/34.7 1110002751 S.IC TA75S01F(TE85RF) 44.5/31.1 1750001910 S.DIO HVD144AKRF-E 48.7/31.4 1150002372 IC RA30H1317M1-201 [EUR-01] 1750001910 S.DIO HVD144AKRF-E 48.0/29.8 1150002372 IC RA30H1317M1-201 [EXP-01] 1150002423 IC...
  • Page 23 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005030 S.RES ERJ2GEJ 152 X (1.5K) 60.4/24.8 R199 7030005050 S.RES ERJ2GEJ 103 X (10K) 133.3/49.2 7030010040 S.RES ERJ2GEJ-JPW 60.2/17.8 R200 7030005240 S.RES ERJ2GEJ 473 X (47K) 115.9/48.8 7030007340 S.RES ERJ2GEJ 153 X (15K) 50.4/26.1 R201 7030005040 S.RES ERJ2GEJ 472 X (4.7K)
  • Page 24 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R357 7030005120 S.RES ERJ2GEJ 102 X (1K) 114.9/7.1 4030017460 S.CER C1005 JB 1H 102K-T 60.4/23.2 R358 7030005120 S.RES ERJ2GEJ 102 X (1K) 112.4/14.2 4030017430 S.CER C1005 CH 1H 101J-T 52.1/25.2 R359 7030005090 S.RES ERJ2GEJ 104 X (100K) 111.5/9.4...
  • Page 25 [MAIN-A UNIT] [MAIN-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C180 4550006970 S.TAN TEESVA0G476M8R 35.9/30.3 C348 4030017460 S.CER C1005 JB 1H 102K-T 59.3/20.4 C181 4030016930 S.CER C1005 JB 1A 104K-T 29.8/19.3 C349 4030016930 S.CER C1005 JB 1A 104K-T 21.0/17.7 C182 4030016790 S.CER C1005 JB 1E 103K-T 28.5/19.6 C350...

  • Page 26: Front Unit

    [MAIN-A UNIT] [FRONT UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 6510026770 S.CON AXK540147YG 23.0/8.3 1140015761 S.IC HD64F2238BTF13V(FX-3334A-1) T 57.8/24.7 6510027960 S.CON 04-6294-040-000-800 67.5/10.6 1110007620 S.IC NJU7704F3-42A-TE1-#ZZZB 60.0/54.9 6450000140 CON HSJ0807-01-010 1130015560 S.IC S-24C64CI-T8T1U3 41.1/28.6 6510022891 S.CON B13B-ZR-SM4-TF(LF)(SN) 120.0/17.2 1110005340 S.IC NJM12902V-TE1-#ZZZB 29.3/21.1 6510014961 S.CON B2B-ZR-SM4-TF(LF)(SN)
  • Page 27 [FRONT UNIT] PARTS DESCRIPTION LOCATION R133 7030008400 S.RES ERJ2GEJ 182 X (1.8K) 40.5/20.7 R134 7030008400 S.RES ERJ2GEJ 182 X (1.8K) 57.6/21.4 R135 7030005030 S.RES ERJ2GEJ 152 X (1.5K) 27.4/28.4 R136 7030005030 S.RES ERJ2GEJ 152 X (1.5K) 47.2/28.3 R137 7030005030 S.RES ERJ2GEJ 152 X (1.5K) 47.2/27.4 R138 7030005030 S.RES ERJ2GEJ 152 X (1.5K)
  • Page 28 SECTION 8. MECHANICAL PARTS [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. 6510004880 MR-DS-E 01 <SSC> (Optional) HM-152 8900011800 OPC-1199 8900011781 OPC-1194A [EUR-01] 8900011781 OPC-1194A [EXP-01] 8010019065 2601 CHASSIS-5 [EUR-01] (Optional) OPC-1132A [USA-01] 8010019065 2601 CHASSIS-5 [EXP-01] (Optional) OPC-1132A [EXP-02] 8010019135 2601 LONG CHASSIS-5 [USA-01]...
  • Page 29 MP1 (C) [50 W version] MP1 (C) [25 W version] MP4 (C) MP8 (C)×2 J1 (C) W2 (M) MP2 (M) MP11 (C) J4 (M) MAIN-A UNIT MP3 (M) MP6 (C) MP5 (C)×2 IC3 (M) R14 (F) W1 (F) MP3 (C)×8 J1 (F) MP2 (F) MP7 (F)×2...
  • Page 30 The combination of top side and bottom side of this SECTION 9. BOARD LAYOUTS AF OUT ANT CONNECTOR J1 (CHASSIS) • MAIN-A UNIT (TOP VIEW) C471 C364 C372 C342 C401 R338 R334 C362 C411 C473 R199 C472 -T8V C270 -TMUT C254 R205 R204...
  • Page 31 The combination of top side and bottom side of this [EXTERNAL SPEAKER JACK] • 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 C457 C261 R393 R202 R203...
  • Page 32 SECTION 10. BLOCK DIAGRAM Q15:XP1214 2SC4116 Q16:LDTC144EE 136-174MHz RIPPLE 2SK880 RX VCO Q14:2SC4226 LVIN D 52:HVC375B D33:HVC376B BUFF D34:HVC376B D 6:RN752 RA30H1317M1 (25W) RLVA D14,D15 D3,D5,D6:RN752 RA60H1317M1A (50W) 2SC3357 IC19 AD J 2SC5006 2SC5006 HVD144A D47,D48:HVD144A TA75S01F CR-794 MB15A02 15.3MHz TX/RX DRIVE BUFF...
  • Page 33 SECTION 11. VOLTAGE DIAGRAM • FRONT UNIT R130 DS10 LDTC114EE 12.29MHz CL-165HR/YG RLED 2.54Vp-p 4.97V C104 CR-915 R131 LDTC114EE R101 CPU5V 1.8K TLED R107 NJU7704F3-42A R106 C102 VOUT R132 LDTC114EE 1.8K LED1 CSFT C103 LNJ426W83RA R133 LDTC114EE R140 HANG 1.8K R118 R119 LED2...
  • Page 34 • MAIN-A UNIT (1/2) R287 DTC363EK L1SS400 R197 R232 C280 R117 LDTC144EE RX AF HPF R370 AFOUT 470K 120K 0.01 R116 CPU5V CPU5V C249 R330 R355 C169 C168 C167 R285 IC14 0.0022 IC16 0.047 0.047 0.056 4.7K H:AFON L:MUTE CD4066BPWR DISC I/O1 C256...
  • Page 35 • MAIN-A UNIT (1/2) 8.1V 7.2V TX 2.4V TX 3.1V RX 2.3V TX 6.7V 2SC4116 MP 1 RX VCO RDS2T0R0 AS080547-47N 0.001 AS080547-47N AS080547-47N 1.8K RN752 C127 3.9K R33R339 C6342A C126 CPU5V CPU5V R333 L4*L43 2SC4226 C460 C113 R332 NLV25T 0.75P *C456 ELJNC...
  • Page 36 Highway 17 Delta, B.C., V4K 5B8, Canada : http://www.icomspain.com Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 E-mail : icom@icomspain.com : http://www.icomcanada.com E-mail : info@icomcanada.com Blacksole House, The Boulevard, Altira Business Park, Herne Bay, CT6 6GZ, UK Phone : +44 (01227) 741741...
  • Page 37 S-14712XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2011 Icom Inc.

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