Icom IC-F80DS Service Manual
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Icom IC-F80DS Service Manual

Icom IC-F80DS Service Manual

Uhf transceivers
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SERVICE
MANUAL
UHF TRANSCEIVERS

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Summary of Contents for Icom IC-F80DS

  • Page 1 SERVICE MANUAL UHF TRANSCEIVERS...
  • Page 2 8. READ the instructions of test equipment thoroughly before connecting equipment to the transceiver. Icom, Icom Inc. and 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 1 SPECIFICATIONS SECTION 2 INSIDE VIEWS SECTION 3 DISASSEMBLY INSTRUCTIONS SECTION 4 CIRCUIT DESCRIPTION 4 - 1 RECEIVE CIRCUITS ..............4 - 1 4 - 2 TRANSMITTER CIRCUITS .

  • Page 4: Specifications

    • Antenna impedance • Operating temperature range : −22°F to 140°F • Power supply requirement : Specified Icom's battery pack only (Operatable voltage; 7.2 V DC negative ground) • Current drain (At 7.2 V DC ; approx.) RECEIVING TRANSMITTING (at 4 W) Stand-by Max.audio...

  • Page 5: Inside Views

    SECTION 2 INSIDE VIEWS • FRONT UNIT TOP VIEW BOTTOM VIEW AF MUTE Q209, Q210: RSR025N03 Microphone (MC201: EM-140) 3.0V regulator 3.0V regulator (IC101: S-812C30AMC-C2K) (IC101: S-812C30AMC-C2K) Mic switch MIC switch Expanders Expander (IC204: TC4S66F) (IC204: TC4S66F) (IC1, IC2: M62320FP) (IC1, IC2: M62320FP) Mic amplifier MIC amplifier...

  • Page 6: Disassembly Instructions

    SECTION 3 DISASSEMBLY INSTRUCTIONS • REMOVING THE CHASSIS UNIT • REMOVING THE MAIN UNIT 1 Unscrew the ANT nut A and remove the ANT washer B. 1 Disconnect the cable H from J3. 2 Unscrew the screw C, and remove the rear panel D in 2 Remove the DSP unit from J2.

  • Page 7: Circuit Description

    SECTION 4 CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS The signals from the two-stage tunable BPF are converted into the 46.35 MHz 1st IF signal at the double-balanced 4-1-1 ANTENNA SWITCHING CIRCUIT (MAIN UNIT) The antenna switching circuit toggles the receive line and type 1st mixer (IC500, L503, L504, L506) by being mixed with the 1st LO signal generated at the RX VCOs (Q600, the transmit line.
  • Page 8 The demodulated AF signals are output from pin 9, and 4-1-6 SQUELCH CIRCUITS (MAIN AND FRONT UNITS) applied to the AF cricuits. • NOISE SQUELCH Noise squelch circuit mutes AF output signals when no RF signals are received. By detecting noise components in the 4-1-5 AF CIRCUITS (MAIN AND FRONT UNITS) demodulated AF signals, the squelch circuit switches the The demodulated AF signals from the FM IF IC are ampli-...

  • Page 9: Transmitter Circuits

    4-2 TRANSMITTER CIRCUITS and output from pins 89–91 (“CENC0,” “CENC1,” ”CENC2”). The CTCSS/DTCS signals are passed through 3 regis- 4-2-1 MICROPHONE AMPLIFIER CIRCUIT ters (R374–R376) to change its wave form. The wave form (FRONT AND MAIN UNITS) changed CTCSS/DTCS signals are then passed through the The microphone amplifier circuit amplifies the audio signals LPF (IC12, pins 8, 10) and applied to the converter (IC303, from microphone within +6 dB/oct pre-emphasis characteris-...

  • Page 10: Receive Circuits

    4-3 PLL CIRCUITS 4-4 POWER SUPPLY CIRCUITS 4-3-1 PLL CIRCUIT (MAIN UNIT) 4-4-1 VOLTAGE LINES (MAIN UNIT) The PLL circuit provides stable oscillation of the transmit LINE DESCRIPTION frequency and receive 1st LO frequency. The PLL circuit compares the phase of the divided VCO frequency with the The voltage from the attached battery pack passed reference frequency.

  • Page 11: Digital Circuit (Ic-F80Dt/Ds Only)

    4-5 DIGITAL CIRCUIT (IC-F80DT/DS only) The audio signals from the DSP UNIT are applied to the • WHILE RECEIVING base band IC (MAIN UNIT; IC301, pin 20) after being A portion of the 2nd IF sigal from the limiter amplifier section passed through the digital/analog switch (MAIN UNIT;...
  • Page 12 4-6-1 CPU (continued) Port Description number name Port Description number name Input port for [MONITOR] switch (MAIN SIDE3 UNIT; S4). Input port for the [VOL] control (VR Low: While [MONITOR] switch is pushed. PWRSW UNIT; R1). Low: While power is ON. Outputs the MSK data to the base MTDT band IC (IC301, pin 10).

  • Page 13: Adjustment Procedures

    • ADJUSTMENT FREQUENCY LIST [Next>] to install the software to the destination folder. (e.g. FREQUENCY (MHz) ADJUSTMENT ITEM C:\Program Files\Icom\CS-F70/F1700 ADJ) y After the installation is completed, the “InstallShield Wiz- TX power : Low1 ard Complete” will appear. Then click [Finish].
  • Page 14 • CONNECTION • JIG cable 5 - 2...
  • Page 15 • PC SCREEN EXAMPLE NOTE: The above values for settings are example only. Each transceiver has its own specific values for each setting. !9 : S-meter (FM) q: Reload adjustment data !0 : Reference frequency @0 : S-meter (digital) w: Transceiver's connection state !1 : Receive sensitivity for center (automatic) @1 : Deviation (narrow) e: Connected DC voltage measurement...

  • Page 16: Software Adjustment

    5-2 SOFT WARE ADJUSTMENT Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT OPERATION PLL LOCK 1 • Operating CH. : CH 1 Click [Reload (F5)] button, then 0.75–1.45 V...
  • Page 17 SOFTWARE ADJUSTMENT (Continued) Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT OPERATION OUTPUT 1 • Operating CH. : CH 6 Connect an RF power meter to 4.0 W POWER...
  • Page 18 SOFTWARE ADJUSTMENT (Continued) Select an operation using [↑] / [↓] keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT OPERATION 1 • Preset [Dig Mode] DIGITAL Connect an FM deviation meter to ±2.80 to ±2.90 kHz DEVIATION* panel...
  • Page 19 SOFTWARE ADJUSTMENT (continued) • Select an operation using [↑] / [↓]keys, then set specifi ed value using [←] / [→] keys on the connected computer keyboard MEASUREMENT ADJUSTMENT ADJUSTMENT CONDITION VALUE UNIT LOCATION NOTE: SENSITIVITY Need to adjust "S-METER ADJUSTMENT" after "RX SENSITIVITY ADJUSTMENT" is adjusted. [BPF T1], Otherwise, "S-METER ADJUSTMENT"...

  • Page 20: Parts List

    SECTION 6 PARTS LIST [FRONT UNIT] [FRONT UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 1110006440 S.IC M62320FP DF5J 20.7/73.6 R202 7030005050 S.RES ERJ2GEJ 103 X (10 kΩ) 16.3/54.2 1110006440 S.IC M62320FP DF5J 20.7/62.5 R203 7030003830 S.RES ERJ3GEYJ 185 V (1.8 MΩ) 26.8/71.1 IC101 1180002400 S.REG S-812C30AMC-C2K-T2...

  • Page 21: Main Unit

    [FRONT UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C110 4030016930 S.CER ECJ0EB1A104K 7.5/93.6 1130010100 S.IC LMX2352TMX 75.8/36.7 C111 4550006450 S.TAN ECST1EY105R 12/90.6 1110005340 S.IC NJM12902V-TE1 75.7/37 1110003490 S.IC TA31136FN (D,EL) 57.6/30.4 C112 4030016930 S.CER ECJ0EB1A104K 11.3/93.6 IC12 1110005340 S.IC NJM12902V-TE1 56.5/13.1 C113...
  • Page 22 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 2020001930 S.CER CFWCA450KFFA-R0 57.1/23.5 7030005310 S.RES ERJ2GEJ 124 X (120 kΩ) 90.5/19.1 2020002120 S.CER CFWCA450KGFA-R0 56.7/17.1 7030007290 S.RES ERJ2GEJ 222 X (2.2 kΩ) 95.8/37 7030008370 S.RES ERJ2GEJ 561 X (560 Ω) FI200 2040001440 S.LC NFE31PT152Z1E9L...
  • Page 23 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R336 7030005090 S.RES ERJ2GEJ 104 X (100 kΩ) 57.2/17.4 R438 7030005090 S.RES ERJ2GEJ 104 X (100 kΩ) 3.1/8.1 R337 7030010040 S.RES ERJ2GE-JPW 35/23.5 R439 7030005700 S.RES ERJ2GEJ 274 X (270 kΩ) 120.2/29.2 R338 7030005310 S.RES ERJ2GEJ 124 X (120 kΩ)
  • Page 24 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION R625 7030005040 S.RES ERJ2GEJ 472 X (4.7 kΩ) 85.8/24.9 C215 4030017350 S.CER ECJ0EC1H020B [H] B 102.1/28.1 R628 7030010040 S.RES ERJ2GE-JPW 88.6/22.4 4030017570 S.CER ECJ0EC1H040B [L] B 102.1/28.1 7030005570 S.RES ERJ2GEJ 820 X (82 Ω) R629 102.4/20.3 C216...
  • Page 25 [MAIN UNIT] [MAIN UNIT] ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C346 4030016930 S.CER ECJ0EB1A104K 74.2/30.4 C447 4030016930 S.CER ECJ0EB1A104K 116/38.6 C347 4030017710 S.CER ECJ0EC1H181J 59.8/15.9 C448 4030018860 S.CER ECJ0EB0J105K 122.7/32.3 C348 4030016930 S.CER ECJ0EB1A104K 58.8/18.3 C449 4030018860 S.CER ECJ0EB0J105K 116.7/34.6 C349 4030016930 S.CER ECJ0EB1A104K 77.9/22.5...

  • Page 26: Dsp Unit (Ic-F80Dt/Ds Only)

    [MAIN UNIT] [DSP UNIT] (IC-F80DT/DS only) ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION C607 4030017590 S.CER ECJ0EC1H070C [H] T 88.9/17.8 1180002590 S.REG XC6204B332MR 2.1/19.5 4030017630 S.CER ECJ0EC1H120J [L] T 88.9/17.8 1180002740 S.REG R1230D151F-TR-F 2.9/30.3 C609 4030017610 S.CER ECJ0EC1H090C [H] T 91.5/30.4 1180002590 S.REG XC6204B332MR 23.7/7.5 C609...

  • Page 27: Vr Board

    [DSP UNIT] (IC-F80DT/DS only) [DSP UNIT] (IC-F80DT/DS only) ORDER ORDER DESCRIPTION DESCRIPTION LOCATION LOCATION 7030005240 S.RES ERJ2GEJ 473 X (47 kΩ) 5.3/11.6 4030017460 S.CER ECJ0EB1E102K 23/14 7030004970 S.RES ERJ2GEJ 470 X (47 Ω) 25.7/27.1 4030016930 S.CER ECJ0EB1A104K 18.9/17.6 7030005240 S.RES ERJ2GEJ 473 X (47 kΩ) 7.3/19.2 4550007030 S.TAN TEESVP 0J 106M8R 22.4/12.6...
  • Page 28 5040003170 UW3804X 2510001300 036D0801C 2250000500 TP70TF5164S 20F-2803 8900013740 OPC-1429 8900010960 OPC-1129 8930057690 O ring (AQ) 8210021540 2803 S-front panel [IC-F80DS/S] Screw abbreviations 8210021800 2803 T-front panel [IC-F80DT/T] B0, BT: Self-tapping PH: Pan head 8210021490 2803 rear panel NI-ZU: Nickel-Zinc ZK: Black...
  • Page 29 MP1 (A) MP35 (C) MP29 (C) MP25 (C) MP52 (C) MP6 (M) MP39 (C) MP55 (C) MP51 (C) MP1 (C) MP1 (C) IC-F80DS/S IC-F80DT/T MP5 (M) MP49 (C) MP6 (F) J1 (C) NOTE S3 (M) W2 (C) MP4 (M) MP57 (C)
  • Page 30 SECTION 8 SEMICONDUCTOR INFORMATION • TRANSISTORS AND FET'S • DIODES 2SA1577 T106 Q 2SB1132 T100 Q 2SC3357 T1 RF 2SC4081 T106 R 2SC4116 BL 1SS301 1SV305 1SV307 DA221 TL DAN235E TL (Symbol: HQ) (Symbol: BAQ) (Symbol: RF) (Symbol: BR) (Symbol: LL) (Symbol: B3) (Symbol: TV) (Symbol: TX)

  • Page 31: Front Unit

    SECTION 9 BOARD LAYOUTS 9-1 FRONT UNIT • TOP VIEW 9 - 1...
  • Page 32 • BOTTOM VIEW (FRONT UNIT) I_MIC MICROPHONE J101 VDD1 VDD2.3 to LCD (DS2) V_LCD to VR board PWRSW SPEAKER AFVI (CHASSIS SP1) XRXD RESET MICE DETECT XTXD EXPTT to MAIN unit J3 9 - 2...
  • Page 33 • • • •...
  • Page 34 • BOTTOM VIEW (MAIN UNIT) H125 H120 H115 H110 H105 H100 • TOP VIEW (ANT BOARD) • TOP VIEW (ANT BOARD) (High band) (Low band) • BOTTOM VIEW (FUSE BOARD) 9 - 4...

  • Page 35: Dsp Unit (Ic-F80Dt/Ds Only)

    9-5 DSP UNIT (IC-F80DT/DS only) 9-6 VR BOARD • TOP VIEW TEST SW1_B SW2_B SW2_A SW3_A CIRQ AGND DFIL FLASH_RXD AFOUT CPU_VDD POWER_SW FLASH_TXD to FRONT RMUT AFVI unit J2 3.3V BUSY XRXD AFON RSSI RESET MMUT MICE QOUT PTTO DETECT PTTI to MAIN unit J2...
  • Page 36 SECTION 10 BLOCK DIAGRAM MAIN UNIT RIPPLE 400-470MHz Q600 450-520MHz 2SC4116 2SC4226 ANTENNA Q609 NJM12902V LMX2352TM D200, D501 Q200 Q201 Q202 Q203 D203 Q605, Q606 RX-VCO 2SC5107 MA2S077×2 2SC5006 2SC3357 RD01MUS1 RD07MVS1 1SV307 CR-778 2SC5107×2 LOOP Q601 TX/RX DRIVE 2SC4226 BUFF BUFF BUFF...
  • Page 37 SECTION 11 VOLTAGE DIAGRAMS 11-1 FRONT UNIT FRONT UNIT EXPTT EXPTT D201 R204 R216 D204 MA2S111 MA2S111 PTTI Q102 IC101 DTC144EE R101 S-812C30AMC-C2K PTT ON: 1.0V Q201 OFF: 4.9V RESB UMG2N XRXD Q103 XTXD VOUT PTTSW DTB123EK FSCL FSDA LED ON: 7.2V AFON to MAIN SPCON...
  • Page 38 11-2 MAIN UNIT MAIN UNIT R604 3.3k R607 1.5k C7 47p 2SC4116 EP600 R5 560k CR-778 C605 C609 12p[L]/7p[H] 12p[L]/9p[H] 270k 2SK880 VCON Q605 Q600 L612 2SC5107 2SC4226 C2012C-R39G R600 L602 ERJ2GE-JPW 1µ NJM12902V 1.5V TEMP LVIN 0.9V Q606 R608 1.5k Q603 2SC5107 XP1214...
  • Page 39 ANT BOARD MAIN UNIT TMUT (CHASSIS) 15n[L] 11n[H] R623 FI200 C250 C246 NFM60R20T152 C238 0.22 D201 MA2S111 R350 100k R620 10 0.001 R218 470k R503 Q204 ERJ2GE-JPW L210 C242 L212 C251 C562 L522 L523 DTA114EE 4.1n 0.001 0.001 0.001 17.5n R220 C640 100k...
  • Page 40 11-3 DSP UNIT (IC-F80DT/DS only) DSP UNIT L5 1µ 3.3V 3.3V 5.0V 3.3V IC13 XC6204B332M TC7S04F L2 1µ 5.0V 3.3V DVDD 3.3V DVDD 3.3V R88 47 VOUT 2SC4081 IC14 IC17 S-80928CNMC HN58X2416TI 1.5V R1230D151F R86 680 NLFV25T-330K-PF ERJ3GE-JPW CVDD 1.5V CVDD 1.5V PGND AGND...
  • Page 41 Phone : +34 (93) 590 26 70 Fax : +34 (93) 589 04 46 Glenwood Centre #150-6165 : http://www.icomspain.com Highway 17 Delta, B.C., V4K 5B8, Canada E-mail : icom@icomspain.com Phone : +1 (604) 952-4266 Fax : +1 (604) 952-0090 : http://www.icomcanada.com E-mail : info@icomcanada.com Unit 9, Sea St., Herne Bay, Kent, CT6 8LD, U.K.
  • Page 42 S-14126HZ-C1 Printed in Japan 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2005 Icom Inc.

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