Icom IC-F4101D Service Manual
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Icom IC-F4101D Service Manual

350-470 mhz range
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UHF TRANSCEIVERS
S-14801XZ-C1
Apr. 2011

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Summary of Contents for Icom IC-F4101D

  • Page 1 UHF TRANSCEIVERS S-14801XZ-C1 Apr. 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 CIRCUIT DESCRIPITON RECEIVER CIRCUITS............4-1 TRANSMITTER CIRCUITS .
  • Page 4 Except [EUR], [UK] –25˚C to +55˚C [EUR], [UK] • Power supply voltage : Specifi ed Icom's battery packs only (7.5 V DC; negative ground) • Current drain (approximately) : Receiving 100 mA (in digital mode, stand-by) 400 mA (max. audio, with the internal speaker) Transmitting 1.3 A (4 W)
  • Page 5 RECEIVER • Sensitivity : 0.24 µV typ. at 12 dB SINAD Except [EUR], [UK] –4 dBµV (EMF) typ. at 20 dB SINAD [EUR], [UK] –8 dBµV (EMF) typ. at 5% BER [Digital mode] • Squelch sensitivity (at threshold) : 0.20 µV typ. Except [EUR], [UK] –8 dBµV (EMF) typ.

  • Page 6: Inside Views

    SECTION 2. INSIDE VIEWS • MAIN-A/MAIN-C UNIT (TOP VIEW) 5 V REGULATOR (IC54) AF AMP (IC58) APC AMP (IC1) 1ST IF FILTER (FI2) TCXO PLL CIRCUIT (X2) DISCRIMINATOR (X1) 2ND IF FILTER (For wide) (FI3) 2ND IF FILTER (For narrow) (FI4) 2ND IF FILTER (For digital) MIC AMP...
  • Page 7 • MAIN-A/MAIN-C UNIT (BOTTOM VIEW) VCC LINE SW (Q92) AF AMP (IC55) AF POWER AMP CONTROLLER (Q63) RF AMP (Q22) AF POWER AMP SW (Q64) RF AMP GATE BIAS CONTROL (Q21) TX POWER AMP (Q1) 1ST IF FILTER DRIVE AMP (FI1) (Q2) 1ST IF MIXER...

  • Page 8: Disassembly Instruction

    1. REMOVING THE CHASSIS 4) CAREFULLY lift the chassis out of the FRONT PANEL 1) Remove the ANT connector nut and 2 knobs. and turn it over in order to unplug the speaker wire. Remove with; “ICOM Driver (K)” CHASSIS (8960000110) SPEAKER WIRE FRONT PANEL 5) Remove the seals and nuts from the CHASSIS.

  • Page 9: Circuit Descripiton

    SECTION 4. CIRCUIT DESCRIPTION 4-1 RECEIVER CIRCUITS • WHILE OPERATING IN THE ANALOG MODE RF CIRCUITS The 2nd IF signal is filtered by the 2nd IF filter (FI3: wide/ The RX signal from the antenna is passed through the LPF middle mode) or fi...

  • Page 10: Transmitter Circuits

    RX AF CIRCUITS 4-2 TRANSMITTER CIRCUITS The demodulated AF signal from the linear codec (IC902) is TX AF CIRCUITS passed through the LPF (IC60C), and then adjusted in level The audio signal from the internal or external microphone by the D/A converter (IC57). The level-adjusted AF signal is (MIC signal) is passed through the MIC gain SW (IC62), and then amplifi...

  • Page 11: Frequency Synthesizer Circuits

    MODULATION CIRCUIT 4-3 FREQUENCY SYNTHESIZER CIRCUITS The modulation signal from the TX AF circuits is applied to The RX VCO is composed of Q13, and D11, D12. The VCO D15 of the TX VCO (Q14, D14–D16) to modulate it (FM for output signal is buffer-amplifi...

  • Page 12: Port Allocations

    4-5 PORT ALLOCATIONS • CPU (IC51) BALL LINE BALL LINE DESCRIPTION DESCRIPTION NAME NAME VOXV Microphone input sensing voltage. Power supply switching control. BATV Battery voltage sensing. H= During receive or stand-by. N14 DMISO DSP (IC903) serial data. RX AF mute switch control. RMUTE L= D u r i n g t h e s q u e l c h c i r c u i t i s PLL lock up time control.

  • Page 13: Adjustment Procedures

    SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION ¤ REQUIRED EQUIPMENTS EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE Cloning software CS-F3100D/F5120D (Revision 1.0 or later) JIG cable Modifi ed OPC-478UC (See the illust below) Measuring range : 0.1–10 W Frequency range : 0.1–600 MHz RF power meter Frequency range...
  • Page 14 ¤ ADJUSTMENT CHANNELS Before starting the adjustments, use the cloning software to create the same cloning file as shown below, then upload it into the transceiver. • For 400 MHz band versions • For 350 MHz band versions 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."...
  • Page 15 ¤ ADJUSTMENT UTILITY ADJUSTMENT CONDITION TX OUTPUT POWER MODULATION BALANCE FM DEVIATION CTCSS DEVIATION DTCS DEVIATION SQUELCH REFERENCE FREQUENCY SENSITIVITY PLL LOCK VOLTAGE S-METER DIGITAL DEVIATION 2/5 TONE DEVIATION For [EUR] versions: When adjusting “Deviation” in the middle band, change the bandwidth to “Middle”...

  • Page 16: Frequency Adjustment

    5-2 FREQUENCY ADJUSTMENTS 1) Select an adjustment item using [↑]/[↓] on the PC's keyboard. 2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM PLL LOCK VOLTAGE 1 •...

  • Page 17: Transmit Adjustment

    5-3 TRANSMIT ADJUSTMENTS 1) Select an adjustment item using [↑]/[↓] on the PC's keyboard. 2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM TX OUTPUT 1 •...
  • Page 18 5-3 TRANSMIT ADJUSTMENTS (Continued) 1) Select an adjustment item using [↑]/[↓] on the PC's keyboard. 2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM FM DEVIATION 1 •...

  • Page 19: Receive Adjustment

    5-4 RECEIVE ADJUSTMENTS 1) Select an adjustment item using [↑]/[↓] on the PC's keyboard. 2) Set or modify the adjustment value as specifi ed using [←]/[→] on the PC's keyboard, then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RECEIVE NOTE: “RECEIVE SENSITIVITY”...
  • Page 20 SECTION 6. PARTS LIST [MAIN-A UNIT] [MAIN-A UNIT] (For [400 MHz band] versions) (For [400 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1110002751 S.IC TA75S01F(TE85RF) 32.5/8.9 1750001790 S.DIO 1SS390 TE61 51.7/36.8 1110007320 S.IC NJM2591V-TE1-#ZZZB 45.8/38.9 1750001790 S.DIO 1SS390 TE61 56.6/40.0 1130015270 S.IC AK1541P-L...
  • Page 21 [MAIN-A UNIT] [MAIN-A UNIT] (For [400 MHz band] versions) (For [400 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 7030004980 S.RES ERJ2GEJ 101 X (100) 63.2/17.9 R188 7030005090 S.RES ERJ2GEJ 104 X (100K) 67.6/34.7 7030005090 S.RES ERJ2GEJ 104 X (100K) 62.8/19.3 R189 7030004980 S.RES ERJ2GEJ 101 X (100)
  • Page 22 [MAIN-A UNIT] [MAIN-A UNIT] (For [400 MHz band] versions) (For [400 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R632 7030005050 S.RES ERJ2GEJ 103 X (10K) 82.9/23.1 4030017460 S.CER C1005 JB 1H 102K-T 19.8/19.2 R633 7030005040 S.RES ERJ2GEJ 472 X (4.7K) 85.7/21.9 4030017460 S.CER C1005 JB 1H 102K-T 18.2/19.2...
  • Page 23 [MAIN-A UNIT] [MAIN-A UNIT] (For [400 MHz band] versions) (For [400 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C171 4030017570 S.CER C1005 CH 1H 040B-T 15.3/16.0 C339 4030017460 S.CER C1005 JB 1H 102K-T 53.4/7.5 C172 4030017350 S.CER C1005 CH 1H 020B-T 15.3/17.2 C340 4030016930 S.CER C1005 JB 1A 104K-T...
  • Page 24 [MAIN-A UNIT] [MAIN-C UNIT] (For [400 MHz band] versions) (For [350 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C904 4050000240 S.FEE NFM18PC104R1C3D 73.1/41.2 1110002751 S.IC TA75S01F(TE85RF) 32.5/8.9 C905 4050000240 S.FEE NFM18PC104R1C3D 72.3/36.9 1110007320 S.IC NJM2591V-TE1-#ZZZB 45.8/38.9 C907 4030017460 S.CER C1005 JB 1H 102K-T 75.2/32.3 1130015270 S.IC AK1541P-L...
  • Page 25 [MAIN-C UNIT] [MAIN-C UNIT] (For [350 MHz band] versions) (For [350 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1750001810 S.DIO L1SS400T1G <SLVJ> 22.8/34.9 7030005600 S.RES ERJ2GEJ 273 X (27K) 65.3/29.6 1750001850 S.DIO LDAN222T1G <SLVJ> 4.2/37.5 7030005080 S.RES ERJ2GEJ 823 X (82K) 65.3/28.7 1750001790 S.DIO 1SS390 TE61...
  • Page 26 [MAIN-C UNIT] [MAIN-C UNIT] (For [350 MHz band] versions) (For [350 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R365 7030005040 S.RES ERJ2GEJ 472 X (4.7K) 26.2/38.9 R652 7030005120 S.RES ERJ2GEJ 102 X (1K) 90.5/22.1 R366 7030005100 S.RES ERJ2GEJ 154 X (150K) 57.8/12.4 R653 7030005120 S.RES ERJ2GEJ 102 X (1K)
  • Page 27 [MAIN-C UNIT] [MAIN-C UNIT] (For [350 MHz band] versions) (For [350 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 4030017720 S.CER C1005 JB 1H 331K-T 24.7/16.1 C186 4030016930 S.CER C1005 JB 1A 104K-T 19.2/31.0 4030017460 S.CER C1005 JB 1H 102K-T 32.7/15.1 C188 4030017460 S.CER C1005 JB 1H 102K-T...
  • Page 28 [MAIN-C UNIT] [MAIN-C UNIT] (For [350 MHz band] versions) (For [350 MHz band] versions) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION C381 4030016930 S.CER C1005 JB 1A 104K-T 68.0/4.5 C920 4030016790 S.CER C1005 JB 1E 103K-T 81.1/43.6 C382 4030016930 S.CER C1005 JB 1A 104K-T 66.4/4.5 C921 4030018910 S.CER C1608 JB 0J 475K-T...
  • Page 29 SECTION 7. MECHANICAL PARTS [CHASSIS PARTS] [ACCESSORIES] ORDER ORDER DESCRIPTION QTY. DESCRIPTION QTY. EP1* 0910067870 B7261 ANT (Optional) FA-SC57U-1 [400 MHz band] (Optional) FA-SC01U-2 [350 MHz band] (Optional) BP-265 6910021491 ANT CONNECTOR 106-1 <SSC> (Optional) BC-193 [USA-01] 2510001560 045P01202-02 (Optional) BC-193 [EXP-01] (Optional)
  • Page 30 MP23(C) J1(C) MP20(C) MP1(C) MP19(C) EP1(C) MP31(C) MP16(C) MP18(C) MP22(C) MP33(C) S51(M) MP31(C) S54(M) MP17(C) R421(M) MP32(C) J52(M) MP27(C) MP2(M) J51(M) MC51(M) MP13(C) MP34(C) MP25(C) MP24(C) MP35(C) MP21(C) MP11(C) MP12(C) MP32(C) MP34(C) SP1(C) MP15(C) W1(C) ABBREVIATIONS: MP14(C) (C): CHASSIS (M): MAIN-A/MAIN-C UNIT MP10(C) MP2(C) 7 - 2...
  • Page 31 SECTION 8. BOARD LAYOUTS The combination of this page and next page shows the top side and bottom side of actual P.C. board. • MAIN-A/MAIN-C UNIT (TOP VIEW) [MIC] [SP] EP903 -VCC C396 R623 C447 R945 C919 C292 C920 C941 L900 C412 R183...
  • Page 32 The combination of this page and next page shows the top side and bottom side of actual P.C. board. • MAIN-A/MAIN-C UNIT (BOTTOM VIEW) EP905 R925 Q900 R421 C459 C946 L901 C334 R163 C275 R190 R923 C391 R408 X900 C448 R406 C273 R933...
  • Page 33 SECTION 9. BLOCK DIAGRAM 350-400MHz 400-470MHz 450-520MHz CR-892 15.3MHz 2SC4116 LDTC114EE 2SC4226 VCON 2SK880 RIPPLE HVD350B TCXO HVD350B LVIN RX VCO BUFF D5:HVD142A D3:HVD142A RD07MUS2B 2SC5107 2SC5107 D6:HVD142A 2SC5107 2SC3356 RD01MUS1 D22:HVD142A LOOP TX/RX BUFF BUFF DRIVE DRIVE HVD396C TX VCO D1:LRB751S Q14 2SC4226 D2:LRB751S...
  • Page 34 SECTION 10. VOLTAGE DIAGRAM • MAIN-A/C UNIT (1/3) TX 4.89V 7.50V 4.24V 2SC4116 +3.3V VCOV +3.3V 4.98V 6.8K 6.8K TX 1.66V TX 1.75V RX 2.43V TX 1.34V RX 1.34V ANT_BOARD 0.30-0.9-4TR LQW18ANR47G00 2SC4226 RX VCO 0.30-0.9-6TR 0.75P HVD142A 0.30-0.9-5TL 0.30-0.9-6TR 0.40-0.9-2TL 0.001 PLST...
  • Page 35 • MAIN-A/C UNIT (2/3) EP52 EP53 MMZ1005A152ET MMZ1005A152ET VLCF4028T-4R7N1R5-2 3.3V DC-DC CPUV CPUV C459 5.00V NFM18PC104R1C3 KTA2015 C465 R396 NFM18PC104R1C3 2SA1577 180K +3.3V +3.3V R397 +3.3V R394 150K IC65 3.28V LDTC114YE BD9141MUV R432 3.32V CP10 VREG 4.7K IC54 VCON CP12 NJM2871BF05 CP11 R398...
  • Page 36 • MAIN-A/C UNIT (3/3) R914 3.27V 3.3V_VDD C904 NFM18PC104R1C3 DVDD_3.3V EP900 CVDD_1.6V MMZ1005S601CT AGND +3.3V_A R917 R920 100K J900 R921 TRST DVDD_3.3V 1.58V IC900 CLKOUT L900 TPS62204DBVR VLCF4028T-100M1R0-2 CP900 CVDD_1.6V EMU0 EMU1 CP117 BDX0 EP903 BFSX0 MMZ1005S601CT BCLKX0 R910 BDR0 R956 RDATA RCLK...
  • Page 37 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 38 S-14801XZ-C1 1-1-32, Kamiminami, Hirano-ku, Osaka 547-0003, Japan © 2011 Icom Inc.

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