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September 2012 [FRONT UNIT] [VR-A UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION EP703 6910013370 S.BEA BLM18BB221SN1D R502 7210003610 VAR F081-0025A <SLVJ> (BLM11B221SB) [B] B 21.0/16.9 6910013370 S.BEA BLM18BB221SN1D (BLM11B221SB) J501 6510027900 S.CON IMSA-9631S-10Y933 7.2/2.9 6910013370 S.BEA BLM18BB221SN1D (BLM11B221SB) 6910013370 S.BEA BLM18BB221SN1D S501 2250000800 ENC...
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September 2012 [VR-B UNIT] [JACK UNIT] (For [USA-02], [USA-05], [USA-06] of IC-F3261DT) PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R502 7210003610 VAR F081-0025A <SLVJ> D803 1790001810 S.VAR AVR-M1005C080MTABB 11.8/8.1 D804 1790001810 S.VAR AVR-M1005C080MTABB 10.8/8.1 D805 1790001810 S.VAR AVR-M1005C080MTABB 7.6/8.1 J501 6510027900 S.CON IMSA-9631S-10Y933 7.2/2.9 D806 1790001810 S.VAR...
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September 2012 The combination of top side and bottom side of this SECTION 8 BOARD LAYOUTS • JACK UNIT (TOP VIEW) EP801 EP802 B7668B EP803 J801 J801 EP804 • RF UNIT J802 (TOP VIEW) J802 D601 EP604 F601 C638 D602 R614 C680 C644...
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September 2012 The combination of top side and bottom side of this • JACK UNIT (BOTTOM VIEW) MP801 • RF UNIT (BOTTOM VIEW) C661 C662 C641 C613 C625 C631 C626 C673 R613 C608 R608 C645 C611 C616 • VR-A UNIT L607 L609 C615...
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VHF TRANSCEIVERS S-14910XZ-C1 August 2012...
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8. READ the instructions of the test equipment thoroughly 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.
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TABLE OF CONTENTS SECTION SPECIFICATIONS SECTION INSIDE VIEWS SECTION DISASSEMBLY INSTRUCTION SECTION CIRCUIT DESCRIPITON RECEIVER CIRCUITS ..................4-1 TRANSMITTER CIRCUITS ................4-2 FREQUENCY SYNTHESIZER CIRCUITS ............4-4 VOLTAGE BLOCK DIAGRAM ................4-4 PORT ALLOCATIONS ..................4-5 SECTION ADJUSTMENT PROCEDURES PREPARATION ....................5-1 FREQUENCY ADJUSTMENT ................
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SECTION 1. SPECIFICATIONS GENERAL • Frequency range : 136 to 174 MHz • Number of conventional channels : 512 (128 zones) • Type of emission : Wide 16K0F3E (25.0 kHz) Except [USA] Middle 14K0F3E (20.0 kHz) [EUR], [DPM] Narrow 11K0F3E (15.0kHz) [USA] 8K50F3E (12.5 kHz) Except [USA]...
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SECTION 2. INSIDE VIEWS • FRONT UNIT (BOTTOM VIEW) DATA LINE BUFFER (IC709) MIC MUTE SW MIC/AF AMP (Q708) (IC705) AF POWER AMP POWER SUPPLY LINE DRIVER (IC706) (For AF POWER AMP) (Q707) EXPANDER (IC702) BACKLIGHT LED DRIVER (Q705) BACKLIGHT LED SW (Q702) EXPANDER (IC703)
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• MAIN UNIT AGC AMP (TOP VIEW) (Q41) D/A CONVERTER (IC33) 1ST IF FILTER (For FM wide mode) (FI3) DISCRIMINATOR (X4) 2ND IF FILTER (FI2) 2ND IF FILTER (For FM narrow and digital modes) (FI1) DIGITAL IF AMP (IC13) DIGITAL IF FILTER +5 V REGULATOR (FI5) (IC11)
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• MAIN UNIT (BOTTOM VIEW) 1ST IF FILTER (For FM narrow and digital modes) (FI4) VCO SW (Q36) VCO SW (Q35) VCO SW IF IC (Q37) (IC15) RIPPLE FILTER TRIPLER (Q24) (Q21) LOCK VOLTAGE BUFFER LV SW (Q22) (Q25) TONE AMP (Q2) PLL IC (IC14)
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5) Disconnect the fl at cable from J5, and then remove panel. the FRONT UNIT from the chassis. Screws Knob Knob Antenna nut Remove with; “ICOM Driver (K)” (8960000110) FRONT UNIT Chassis MAIN UNIT FLAT CABLE 2) Remove 2 screws from the chassis. BE CAREFUL about the locks.
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3. REMOVING THE JACK UNIT 4. REMOVING THE RF UNIT 1) Unsolder 8 points at the dial. 1) Unsolder 4 points as shown. DIAL UNSOLDER RF UNIT UNSOLDER Solder remover VR UNIT Solder remover UNSOLDER Chassis Solder remover Chassis 2) Remove 4 screws from the RF UNIT, and then remove the RF UNIT from the chassis.
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SECTION 4. CIRCUIT DESCRIPTION 2ND IF CIRCUIT (MAIN UNIT) 4-1 RECEIVE CIRCUITS The 1st IF signal is applied to the IF IC (IC15, pin 16), which RF CIRCUIT (RF UNIT AND MAIN UNIT) contains the 2nd IF mixer, 2nd IF AMP, demodulator and The RX signal from the antenna is passed through the LPF other circuits.
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RX AF CIRCUIT (MAIN AND FRONT UNITS) 4-2 TRANSMIT CIRCUITS The AF signal from the demodulator circuit is applied to the TX AF CIRCUIT (MAIN AND FRONT UNITS) baseband IC (MAIN UNIT: IC4, pin 23). The AF signal from the internal or external microphone (MIC signal) is passed through the MIC SW (FRONT UNIT: The applied AF signal is amplified and adjusted in level, Q708), and applied to the MIC AMP (FRONT UNIT: IC705,...
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MODULATION CIRCUIT (MAIN UNIT) 4-3 FREQUENCY SYNTHESIZER CIRCUITS The MIC signal from the TX AF circuit is amplified by the (MAIN UNIT) AMP (IC3), and then applied to the D/A converter (IC9, • VCO pin 4) to be adjusted in level. The transceiver has 3 VCOs;...
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4-5 PORT ALLOCATIONS Ball Port Description Name • CPU (MAIN UNIT: IC35) Serial data to the PLL IC (IC14) and D/A Ball Port Description converter (IC9). Name DAST Strobe signal to the D/A converter (IC9). Bandwidth switches (Q27–Q29, D8, D16) Outputs mode (Digital/Analog) switching NWC1 control.
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SECTION 5. ADJUSTMENT PROCEDURE 5-1 PREPARATION ▄ REQUIRED TEST EQUIPMENTS EQUIPMENT GRADE AND RANGE EQUIPMENT GRADE AND RANGE CS-F3160/5060 ADJ Modifi ed OPC-1862 CLONING CABLE Adjustment software JIG cable CS-F3160/5060 ADJ (dPMR) (for [DPM-01]) (See the illustration on page 5-2) Frequency range : DC–300 MHz Power attenuation...
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¤ JIG CABLE OPC-1862 SPEAKER (1 W/8 Ω) AC MILLIVOLTMETER AUDIO GENERATOR (10 mV to 10 V) (300–3000 Hz/1–500 mV) − + − + − Add a jumper wire here 4.7 µF ¤ ADJUSTMENT CHANNELS CONVENIENT: The same cloning file is available. Right-click below, and select "Save Embeded File to Disk."...
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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, and then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM PLL LOCK 1) Connect an RF power meter to the an- [LV (RX 1)]...
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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, and then push [ENTER]. ADJUST- TRANSCEIVER’S ADJUSTMENT OPERATION MENT VALUE CONDITION ITEM TX OUTPUT 1 •...
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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, and then push [ENTER]. TRANSCEIVER’S ADJUSTMENT ADJUSTMENT OPERATION VALUE CONDITION ITEM RX SENSITIVITY 1 NOTE: When "RX SENSITIVITY"...
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SECTION 6. PARTS LIST [VERSION LIST] [MAIN UNIT] PARTS DESCRIPTION MODEL VERSION SYMBOL LOCATION 1110005310 S.IC AN6123MS 29.3/13.3 F3261DT USA-01 1180003670 S.REG BD9141MUV-E2 4.8/10.8 1110005340 S.IC NJM12902V-TE1-#ZZZB 39.5/12.5 F3261DT USA-03 1110008030 S.IC AK2346BP-E2 40.0/29.0 1110003800 S.IC NJM2904V-TE1-#FMZB 40.1/8.3 F3261DT USA-04 1140013200 S.IC CD4053BPWR 42.0/27.6...
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[MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION 1160000060 S.DIO DAN202U T106 94.9/11.6 7030005530 S.RES ERJ2GEJ 100 X (10) 28.2/10.9 Eqv. 1750000271 S.DIO 1SS301(TE85LF) 7030005310 S.RES ERJ2GEJ 124 X (120K) 39.5/17.8 Eqv. 1750002340 S.DIO LDAN202UT1G <SLVJ> 7030008300 S.RES ERJ2GEJ 184 X (180K) 35.9/14.4 Eqv.
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[MAIN UNIT] [MAIN UNIT] PARTS PARTS DESCRIPTION DESCRIPTION LOCATION LOCATION R116 7030005720 S.RES ERJ2GEJ 563 X (56K) 22.2/19.3 R233 7030009320 S.RES ERJ2GEJ 4R7 X (4.7) 82.3/16.2 R118 7030005090 S.RES ERJ2GEJ 104 X (100K) 27.9/25.0 R234 7030005090 S.RES ERJ2GEJ 104 X (100K) 83.1/14.9 R119 7030005700 S.RES ERJ2GEJ 274 X (270K)
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W1(C) MP10(C) MP8(C) MP802(J) EP1(C) MP46(C) SP1( C) W1( C) MP45(C) MP22(C) MP31(C) MP47(C) J1(C) MP32(C) EP1(C) (Viewing from the bottom) MP26(C) MP45(C) JACK UNIT MP47(C) MP3(C) MP7(C) MP15(C) MP28(C) MP36(C) MP30(C) MP29(C) MP1(C) MP16(C) MP44(C) MP37(C) MP23(C) MP42(C) VR-A UNIT MP21(C) MP12*(C) MP24(C)
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The combination of top side and bottom side of this SECTION 8 BOARD LAYOUTS • FRONT UNIT (TOP VIEW) J702 MC701 DS702 J704 C764 INSP- INSP+ C765 EMIC EPTT DS701 C769 C771 MDET C772 DS710...
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The combination of top side and bottom side of this MC701 • FRONT UNIT (BOTTOM VIEW) MP710 R713 R750 C728 S717 IC702 MP707 R778 IC709 R779 Q709 J701 J701 C726 C746 R737 D705 C724 C722 REST MCIN C714 C716 C737 R733 AFON D704...
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The combination of top side and bottom side of this • MAIN UNIT (TOP VIEW) [Side3] [Side2] [Side1] [PTT] C176 DISC R170 R341 CPU5V C150 R150 R143 R145 C138 R115 R378 R405 R113 R377 C429 C442 R114 IC13 C143 R384 R186 PWRSW AFVI...
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The combination of top side and bottom side of this • MAIN UNIT (BOTTOM VIEW) R155 C155 C243 R172 R232 C446 R162 R164 R415 R228 R409 R355 C157 C268 C495 C445 R416 C154 C266 C221 C222 R410 C287 R196 R182 C180 C496 C263...
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The combination of top side and bottom side of this • JACK UNIT (TOP VIEW) • RF UNIT (TOP VIEW) EP801 EP802 D601 EP604 B7668B EP803 J801 J801 F601 C638 EP804 D602 R614 J802 C680 C644 C612 R612 IC601 R632 C665 J802 C632...
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The combination of top side and bottom side of this • JACK UNIT (BOTTOM VIEW) • RF UNIT (BOTTOM VIEW) MP801 C661 C662 C641 C613 C625 C631 C626 R613 C673 C608 C645 R608 C611 C616 L607 L609 C615 C672 C674 C668 R631 R630...
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