Icom IC-FR3000 manual Introduction, Ordering Parts, Repair Notes

Page 2

INTRODUCTION

DANGER

This service manual describes the latest service informa- tion for the IC-FR3000/IC-FR3100VHF FM REPEATER.

	Model	Version	Symbol	Frequency range	AC supply	Power
		U.S.A.	USA		100 –120 [V]	50 [W]

	IC-FR3000		GEN2	150 –174 [MHz]
			GEN2	150 –174 [MHz]

		General	GEN4		220 –240 [V]	50 [W]
		General	GEN4

			GEN74	148 –172 [MHz]
			GEN74	148 –172 [MHz]

	IC-FR3100	Europe	EUR2	150 –174 [MHz]	220 –240 [V]	25 [W]

		Germany	FRG2
		Germany	FRG2

To upgrade quality, all electrical or mechanical parts and internal circuits are subject to change without notice or obligation.

USE ONLY the specified AC voltage described on the AC power socket. Other voltages may causes repeater damage or personal injury.

DO NOT expose the repeater to rain, snow or any liquids.

DO NOT reverse the polarities of the power supply when connecting the repeater.

DO NOT apply an RF signal of more than 20 dBm (100 mW) to the antenna connector. This could damage the repeater’s front end.

ORDERING PARTS

Be sure to include the following four points when ordering replacement parts:

1.10-digit order numbers

2.Component part number and name

3.Equipment model name and unit name

4.Quantity required

<SAMPLE ORDER>

1110003780 S.IC NJM2902V IC-FR3000 LOGIC UNIT 1 piece

8930056450 2368 6-key

IC-FR3000 CHASSIS 5 pieces

Addresses are provided on the inside back cover for your convenience.

REPAIR NOTES

1.Make sure a problem is internal before disassembling the repeater.

2.DO NOT open the repeater until the repeater is discon- nected from its power source.

3.DO NOT force any of the variable components. Turn them slowly and smoothly.

4.DO NOT short any circuits or electronic parts. An insu- lated tuning tool MUST be used for all adjustments.

5.DO NOT keep power ON for a long time when the re- peater is defective.

6.DO NOT transmit power into a signal generator or a sweep generator.

7.ALWAYS connect a 40 dB or 50 dB attenuator be- tween the repeater and a deviation meter or spectrum analyser when using such test equipment.

8.READ the instructions of test equipment thoroughly before connecting equipment to the repeater.

Image 2

Contents IC-fr3000 iC-fr3 1 0 Repair Notes IntroductionOrdering Parts Table of Contents Specifications GeneralBoard Layout PA UnitLogic Unit Bottom viewTX Unit RX Unit2 1ST Mixer and 1ST if Circuits RX Unit Receiver CircuitsRF Circuit RX Unit 3 2ND if and Demodulator Circuits RX UnitMIC Mute Transmitter CircuitsReceiver Mute Circuits Logic Unit Case of the Ctcss and Dtcs Signals From the CPU Case of the 2/5TONE SignalsCase of the Dtmf Signals from Dialer IC Power Amplifier Circuit PA UnitPLL Circuits Power Supply Circuits Other CircuitsExpander IC Logic Unit IC40 Port AllocationsExpander IC Logic Unit IC39 Expander IC Logic Unit IC415 D/A Converter IC TX Unit IC5 Busy DtcsiTEL MCKRequired Test Equipment Battery RXPreparation MICBefore Entering the Adjustment Mode Process to the Permit Adjustment Mode AccessExiting the Adjustment Mode Entering the Adjustment ModeOperating in the Adjustment Mode After Finishing AdjustmentWide Adjustment Mode CH ListExplanation of LCD Display in the Adjustment Mode NarrowTX Unit TOP View RX Unit TOP View CP2 PLL AdjustmentIC-FR3000 TOP View CP4Software Adjustment LOW PowerOutput DeviationCtcss DtcsSection Parts List REG UnitFront Unit Logic UnitBridge Resistor ERJ12YJ390U ECEV1CA100SR ECEV1CA220SR Tantalum Teesva 1V 104M8L RX Unit Tantalum Teesva 1V 224M8L Rvco Unit TX Unit Tvco Unit PA Unit VR Unit JACK1 UnitJACK2 Unit Chassis UnitOption Unit Installation Duplexer and isolater installation Example 3 Duplexer and Isolater Connection Connection Example 1 Isolater ConnectionExample 2 Duplexer Connection ISO Isolater DUP DuplexerMechanical Parts and Disassembly Front Unit REG Unit Rvco Unit SEMI-CONDUCTOR Information Transistors and FetsDiodes Front Unit Tvco Unit Rvco UnitRvco Unit Tvco Unit VR Unit ¡BOTTOM ViewLogic Unit BoardGND TMUTE1 Txaf Tone TMUTE2 Patemp Rvswr Fwswr RX Unit RX Unit TX Unit TX Unit PA Unit PA Unit REG Unit JACK1 Unit REG UnitJACK2 Unit Block Diagram PA Unit Wiring Diagram Section Voltage Diagram Rvco Unit TX Unit PA Unit Unit Logic Unit Chassis Unit Icom New Zealand 32, Kamiminami, Hirano-ku, Osaka, 547-0003, Japan