Icom IC-F410 Service Manual
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Icom IC-F410 Service Manual

Icom IC-F410 Service Manual

Uhf fm transceiver
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SERVICE
MANUAL
UHF FM TRANSCEIVER
iF410
iF410S
iF420
iF420S

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Summary of Contents for Icom IC-F410

  • Page 1 SERVICE MANUAL UHF FM TRANSCEIVER iF410 iF410S iF420 iF420S...
  • Page 2 IC-F410 MAIN UNIT 5 pieces 6. DO NOT transmit power into a signal generator or a 8810005840 Screw PH BT M3 x 8 NI-ZU IC-F410 Bottom cover 10 pieces sweep generator. Addresses are provided on the inside back cover for your 7.
  • Page 3 MECHANICAL PARTS SECTION 8 SEMI-CONDUCTOR INFORMATION SECTION 9 BOARD LAYOUTS 9 - 1 FRONT UNIT (IC-F410/F420) ........................9 - 1 9 - 2 FRONT UNIT (IC-F410S/F420S) .........................9 - 3 9 - 3 MAIN UNIT ..............................9 - 5 SECTION 10 BLOCK DIAGRAM...
  • Page 4 SECTION 1 SPECIFICATIONS IC-F410/F410S (PMR) IC-F420/F420S (LMR) Mesurement method ETS 300 086 EIA/TIA-152C/204D 400–430 MHz 400–430 MHz 440–470 MHz 450–470 MHz Frequency coverage 470–490 MHz 470–490 MHz 490–520 MHz 490–512 MHz × × F410 : 32 (16 ch 2 banks)
  • Page 5 SECTION 2 INSIDE VIEW Power module (IC5) Low-pass filter AF power amplifier (IC9: LA4425) *RF amplifier PLL reference TCXO (X2: CR-601) *(Q1: 3SK241) VCO circuit I/O expander (IC13: BU4094BCF) 2nd IF filter (FI3) *1st mixer (Q3: 3SK241) 2nd IF filter (FI2) 1st IF filter (FI1) *Level controller *(IC12: M62363FP)
  • Page 6 SECTION 3 DISASSEMBLY INSTRUCTIONS • Opening case 6 Lift the front portion of the main unit and remove it. 1 Unscrew 4 screws, A, and remove the bottom cover. 2 Unscrew 2 screws, B, and remove the front case. • Instllation location UT-96 TONE UNIT UT-105 SmarTrank 2 Logic Board...

  • Page 7: 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 (MAIN unit) The 1st mixer circuit converts the received signals to a fixed The antenna switching circuit functions as a low-pass filter frequency of the 1st IF signal with the PLL output frequency.
  • Page 8 4-1-5 AF AMPLIFIER CIRCUIT (MAIN unit) A portion of the AF signals from the AF amplifier (IC7b) passes through the low-pass filter (FRONT unit; Q5) to The AF amplifier circuit amplifies the demodulated AF sig- remove AF (voice) signals and is applied to the CTCSS or nals to drive a speaker.

  • Page 9: Pll Circuits

    (IC5) to obtain 35 W (for IC-F420/F420S; 25 sists of the PLL IC (IC2), loop filter and reference oscillator W for IC-F410/F410S) of RF power. circuit and employs a pulse swallow counter. The amplified signal is passed through the antenna switch-...

  • Page 10: Power Supply Circuits

    4-4 POWER SUPPLY CIRCUITS 4-4-1 VOLTAGE LINES (MAIN unit) CPU (IC1)—continued Description Line Port Description number name The voltage from a DC power supply. Outputs RF attenuator control signal to The same voltage as the VCC line which is con- RFATT the attenuator switch (MAIN unit;...
  • Page 11 4-5-2 I/O expander IC (1) IC12 (MAIN unit) Port Description number name Output tunable band pass filter control 2, 3, 10 T1–T3 signals. Output port for tunable band pass filter control signal while receiving. output power control signal while transmitting. Output port for reference frequency control voltage.
  • Page 12 ‘ ‘ – – – – – – – – – – – – – – – – – – – – DTCS W : 51 /A: This does not activate for IC-F410/F410S/F420/F420S’s ‘ ‘ ‘ ‘– – – – – – – – – – – – – – – – – –...
  • Page 13 ‘ ‘ PROGRAM SCREEN EXAMPLE ∗∗∗∗∗ Trimmer Control Software for IC–F300 Series ∗∗∗∗∗ Rev. 1.0 Connected DC voltage A/D VIN 165 : A5h 13.23V D/A BP T1 98 : 62h 2.03V Internal temperature A/D TEMPS 173 : ADh 24.81'C D/A BP T2 49 : 31h 1.41V PLL lock voltage...

  • Page 14: Pll Adjustment

    5-2 PLL ADJUSTMENT ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST PLL LOCK • Operating frequency: (Ch1) MAIN Connect a digital 1.5 V MAIN VOLTAGE [L-band] : 400.00000 MHz multi-meter or oscil- [ML-band] ∏ : 440.00000 MHz loscope [ML-band] Ò...
  • Page 15 5-3 TRIMMER ADJUSTMENT Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard. MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION REFERENCE • Operating frequency: (Ch2) Rear Loosely couple a frequency 430.00000 MHz FREQUENCY [L-band]...
  • Page 16 TRIMMER ADJUSTMENT — continued Select an operation using [↑] / [↓]keys, then set specified value using [←] / [→] keys on the connected computer keyboard. MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION DTCS WAVE • Operating frequency: (CH1) Rear Connect an FM deviation meter Set to flat wave [L-band] : 400.00000 MHz...

  • Page 17: Main Unit

    5-4 BEEP ADJUSTMENT ADJUSTMENT MEASUREMENT POINT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION UNIT ADJUST BEEP AUDIO 1 • Operating frequency: Any Rear Connect an AC mil- 62.5 mV FRONT livoltmeter with 4 Ω • Connect an audio generator to panel pin 25 (MAIN unit;...
  • Page 18 SECTION 6 PARTS LIST [FRONT UNIT] [FRONT UNIT] ORDER ORDER DESCRIPTION DESCRIPTION 1140007911 S.IC HD6433875B20H 7030003740 S.RESISTOR ERJ3GEYJ 334 V (330 kΩ) 1110003500 S.IC S-80742SL-A6-T1 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ) 1130008670 S.IC 25LC160T-I/SN 7410000950 S.ARRAY EXB-V8V 102JV 7410000950 S.ARRAY EXB-V8V 102JV 7410000950 S.ARRAY EXB-V8V 102JV...
  • Page 19 [FRONT UNIT] [FRONT UNIT] ORDER ORDER DESCRIPTION DESCRIPTION 4030006900 S.CERAMIC C1608 JB 1E 103K-T-A 7030000010 S.JUMPER MCR10EZHJ JPW (000) 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 7030003860 S.JUMPER ERJ3GE JPW V 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 8900007680 CABLE OPC-741 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A...
  • Page 20 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION 1110003490 S.IC TA31136FN (D,EL) 1790000700 DIODE DSA3A1 1180001250 S.IC TA7808F (TE16L) 1750000370 S.DIODE DA221 TL 1180000970 S.IC AN78L05M-(E1) 1790000620 S.DIODE MA77 (TX) 1110002700 S.IC NJM2904M-T1 1790000620 S.DIODE MA77 (TX) ∏ 1150001670 IC S-AU27AL/SC-1322 [L-band] 1720000370 S.VARICAP...
  • Page 21 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION ERJ3GEYJ 220 V (22 Ω) 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) 7030003240 S.RESISTOR ERJ3GEYJ 221 V (220 Ω) 7030003720 S.RESISTOR ERJ3GEYJ 224 V (220 kΩ) 7030003360 S.RESISTOR 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) 7030003520 S.RESISTOR ERJ3GEYJ 472 V (4.7 kΩ) 7030003720 S.RESISTOR...
  • Page 22 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION R166 7030003560 S.RESISTOR ERJ3GEYJ 103 V (10 kΩ) R260 7030003550 S.RESISTOR ERJ3GEYJ 822 V (8.2 kΩ) ERJ3GEYJ 101 V (100 Ω) R167 7030003320 S.RESISTOR [MH-band] R168 7030003680 S.RESISTOR ERJ3GEYJ 104 V (100 kΩ) 7030003570 S.RESISTOR ERJ3GEYJ 123 V (12 kΩ) other...
  • Page 23 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION 4030011770 S.CERAMIC C1608 CH 1H 060B-T-A [L-band] 4030004760 S.CERAMIC C2012 JF 1E 104Z-T-A 4030009920 S.CERAMIC C1608 CH 1H 050B-T-A 4510005290 S.ELECTROLYTIC ECEV1EA221P [ML/H-band] 4510004630 S.ELECTROLYTIC ECEV1CA100SR 4030009910 S.CERAMIC C1608 CH 1H 040B-T-A 4030008630 S.CERAMIC C1608 JF 1C 104Z-T-A [MH-band]...
  • Page 24 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION C137 4030006850 S.CERAMIC C1608 JB 1H 471K-T-A C187 4030011600 S.CERAMIC C1608 JB 1C 104KT-N C138 4030006860 S.CERAMIC C1608 JB 1H 102K-T-A C188 4550006320 S.TANTALUM ECST0JY475R C139 4030008230 S.CERAMIC C1608 UJ 1H 080D-T-A [L-band] C189 4030011600 S.CERAMIC C1608 JB 1C 104KT-N...
  • Page 25 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION C272 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 6510020510 S.CONNECTOR FH12-40S-0.5SV C273 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 6510018430 S.CONNECTOR AXN330C038P C274 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 6510019250 S.CONNECTOR B11B-ZR-SM3-TF C275 4030007090 S.CERAMIC C1608 CH 1H 470J-T-A 6510014960 S.CONNECTOR B2B-ZR-SM3-TF...
  • Page 26 SECTION 7 MECHANICAL PARTS [FRONT UNIT] [UNPACKING] REF NO. ORDER NO. DESCRIPTION QTY. REF NO. ORDER NO. DESCRIPTION QTY. 6450001470 Connector 95003-2881 5210000120 Fuse FGB 15A [PMR] 5210000080 Fuse FGB 20A [LMR] 8900007680 Cable OPC-741 Optional product Microphone EM-99 5030001540 LCD LD-HU10140J Optional product Cable OPC-345...
  • Page 27 MP14 (M) MP1 (F) MP1 (M) MP9 (C) EP2 (F) DS1 (F) MP8 (M) SP1 (C) MP2 (F) LCD type only (IC-F410/F420) WS1 (C) MP2 (M) MP7 (M) MP4 (C) MP3 (C) MP8 (C) MP7 (C) MP2 (C) MP7 (C)
  • Page 28 SECTION 8 SEMI-CONDUCTOR INFORMATION • TRANSISTORS AND FET'S • DIODES 2SB1132 R 2SB1143 S 2SC4081 R 2SC4215 O 2SC4703 SE 1SS302 1SS352 1T365 DA221 DAN202U (Symbol: BARB) (Symbol: BR) (Symbol: QO) (Symbol: SE) (Symbol: C3) (Symbol: C1) (Symbol: pink line)N) (Symbol: K) (Symbol: N) 2SC5107 O...
  • Page 29 SECTION 9 BOARD LAYOUTS 9-1 FRONT UNIT (IC-F410/F420) ¡ ¡ TOP VIEW to Microphone 9 - 1...
  • Page 30 ¡ ¡ BOTTOM VIEW to MAIN unit J3 9 - 2...
  • Page 31 9-2 FRONT UNIT (IC-F410S/F420S) ¡ ¡ TOP VIEW to Microphone 9 - 3...
  • Page 32 ¡ ¡ BOTTOM VIEW to MAIN unit J3 9 - 4...
  • Page 33 9-3 MAIN UNIT ¡ ¡ TOP VIEW to FRONT unit SPGND to Speaker HORN to Optional cable NOTE: is Soldering portion. to Optional unit 9 - 5...
  • Page 34 ¡ ¡ BOTTOM VIEW 9 - 6...
  • Page 35 SECTION 10 BLOCK DIAGRAM AFOUT D3, D4, D5 IC11 IC11 IC6C, D TX/RX IC4A 46.35 MHz IC12 RMUT RFATT AFHPF SHIFT FM IC MUTE BEEP LVIN BUFF AFATT IC4B AFON CTRL IC7B D18, D19 Q23, D20, D34 TX/RX NOIS DRIVE BUFF MICOUT MICIN...
  • Page 36 SECTION 11 VOLTAGE DIAGRAM ¡ ¡ FRONT UNIT LED type only (LED type only) Connect to IC1(pin 69 pin 75) DS12 LCD type only LD-HU10140J SEG1 (LCD type only) SEG1 SEG2 FRONT UNIT SEG2 DS13 SEG3 (LCD type only) SEG3 SEG4 MEASUREMENT CONDITIONS SEG4...
  • Page 37 • MAIN UNIT R17 100k R16 47k 5p ( P -L/ML/MH) TX:7.9 V 13.6 V 2SJ377 2SD1664 6p ( L-band ) 3p ( L -MH,H-band RX:0 V 2p (L-band ) TX:0 V 1.5p TX:0 V 5p ( ML,H-band ) 4p ( L -L/ML) TX:0 V 1.5p (ML/MH-band) IC2 TA7808F...
  • Page 38 -L :PMR L-band -L :LMR L-band DIGITAL MULTIMETER INTERNAL RESISTANCE:50k‰/V P -ML:PMR ML-band -ML:LMR ML-band IC-F420/420S(LMR):f=460.1MHz,TX POWER=35W MA111 -ML:PMR MH-band -MH:LMR MH-band IC-F410/410S(PMR):f=455.1MHz,TX POWER=25W -H :PMR H-band -H :LMR H-band VOLTAGES INDICATED WITH(*)MARK ARE CHANGED WITH THE FREGUENCY AND POWER. COMPLETE VIEW...
  • Page 39 PTT IN P -ML:PMR ML-band -ML:LMR ML-band INTERNAL RESISTANCE:50k‰/V IC-F420/420S(LMR):f=460.1MHz,TX POWER=35W MA111 -ML:PMR MH-band -MH:LMR MH-band IC-F410/410S(PMR):f=455.1MHz,TX POWER=25W 5.1 V -H :PMR H-band -H :LMR H-band VOLTAGES INDICATED WITH(*)MARK ARE CHANGED WITH THE FREGUENCY AND POWER. RIGHT SIDE LEFT SIDE...
  • Page 40 08190 Sant Cugat del Valles Barcelona, SPAIN Phone : ( 93 ) 590 26 70 Fax : ( 93 ) 589 04 46 A Division of Icom America Inc. 3071 #5 Road, Unit 9, Richmond, B.C., V6X 2T4, Canada : http://www.icomspain.com...
  • Page 41 A-5560SI-SU 6-9-16, Kamihigashi, Hirano-ku Osaka 547-0002, Japan © 1999 by Icom Inc.

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