EFJohnson 001-9800-001 User Manuals

Table of Contents

• TABLE OF CONTENTS

  3
• SECTION 1 GENERAL INFORMATION

  6
  • 1.1 SCOPE OF MANUAL

    6
    • 1.1.1 General

      6
    • 1.1.2 LTR®, Low Tier, and Data Models

      6
  • 1.2 TRANSCEIVER DESCRIPTION

    6
    • 1.2.1 General

      6
    • 1.2.2 Available Frequency Bands

      6
    • 1.2.3 Front and Remote Mounting

      7
    • 1.2.4 NPSPAC Models (800 MHz Only)

      7
    • 1.2.5 Programming

      7
    • 1.2.6 Transceiver Alignment

      7
  • 1.3 PART NUMBER BREAKDOWN

    7
  • 1.4 TRANSCEIVER IDENTIFICATION

    8
  • 1.5 ACCESSORIES

    8
  • 1.6 PRODUCT WARRANTY

    9
  • 1.7 FACTORY CUSTOMER SERVICE

    9
  • 1.8 FACTORY RETURNS

    10
  • 1.9 REPLACEMENT PARTS

    10
  • 1.10 INTERNET HOME PAGE

    10
  • 800 MHz 988x SPECIFICATIONS

    12
  • 900 MHz 989x SPECIFICATIONS

    13
  • UHF 984x SPECIFICATIONS

    11
• SECTION 2 INSTALLATION

  14
  • 2.1 GENERAL

    14
    • 2.1.1 Scope of Instructions

      14
    • 2.1.2 Performance Tests

      14
    • 2.1.3 Transceiver Programming

      15
    • 2.1.4 Required Power Source

      15
  • 2.2 MOUNTING THE TRANSCEIVER

    15
    • 2.2.1 Selecting A Mounting Location

      15
    • 2.2.2 Installation Components

      15
    • 2.2.3 Attaching Mounting Bracket

      15
  • 2.3 POWER CABLE INSTALLATION

    16
  • 2.4 ACCESSORY CABLE INSTALLATION

    17
    • 2.4.1 General

      17
    • 2.4.2 Accessory Pigtail Installation

      18
    • 2.4.3 Connecting Ignition Sense Wire

      18
    • 2.4.4 Connecting Horn Alert Wire

      19
    • 2.4.5 Other Accessory Cable Outputs

      19
  • 2.5 REMOTE CONTROL UNIT INSTALLATION

    19
    • 2.5.1 General

      19
    • 2.5.2 Mounting Remote Control Unit

      19
  • 2.6 USING AN EXTERNAL SPEAKER

    20
  • 2.7 DATA CABLE INSTALLATION

    20
    • 2.7.1 General

      21
    • 2.7.2 Data Cable Installation

      21
  • 2.8 KEY CAP KITS

    21
    • 2.8.1 Multi-Net and LTR-Net Models

      21
    • 2.8.2 SMARTNET/SmartZone Models

      22
• SECTION 3 CIRCUIT DESCRIPTION

  23
  • 3.1 GENERAL TRANSCEIVER DESCRIPTION

    23
    • 3.1.1 Introduction

      23
    • 3.1.2 Circuit Protection (Fuses)

      23
    • 3.1.3 Synthesizer

      23
    • 3.1.4 Audio/Logic Board

      23
    • 3.1.5 Receiver

      24
    • 3.1.6 Transmitter

      24
  • 3.2 POWER DISTRIBUTION AND SWITCHING

    24
    • 3.2.1 Power Switching Control

      24
    • 3.2.2 Supply Switching

      24
  • 3.3 AUDIO/LOGIC BOARD DIGITAL CIRCUIT

    26
    • 3.3.1 Microcontroller (U101)

      26
    • 3.3.2 Memory and Latch Programming

      28
  • 3.4 RECEIVE AUDIO/DATA PROCESSING

    29
    • 3.4.1 Amplifier (U301B)

      29
    • 3.4.2 Receive Audio Processing

      29
    • 3.4.3 Receive Data Processing

      30
    • 3.4.4 Squelch Circuit (U304A, U304B)

      31
  • 3.5 TRANSMIT AUDIO/DATA PROCESSING

    31
    • 3.5.1 Microphone Amplifier (U303B), High-Pass Filter (U303C)

      31
    • 3.5.2 Summing Amplifier (U303D), Pre- Emphasis/Limiter (U303A)

      32
    • 3.5.3 Splatter Filter (U302B, U302C)

      32
    • 3.5.4 Transmit Data Circuit (U302D, U302A)

      32
  • 3.6 DISPLAY BOARD

    32
  • 3.7 SYNTHESIZER CIRCUIT DESCRIPTION (UHF MODELS)

    33
    • 3.7.1 Introduction

      33
    • 3.7.2 Voltage-Controlled Oscillator

      33
    • 3.7.3 Active Filter (Q800), Buffer Amplifier (Q801)

      34
    • 3.7.4 VCO and TCXO Modulation

      36
    • 3.7.5 Synthesizer Integrated Circuit (U804)

      36
    • 3.7.6 Lock Detect

      37
    • 3.7.7 Charge Pump

      37
    • 3.7.8 Shift Register (U800, U801) and Digital Potentiometer (U802) Programming

      37
  • 3.8 RECEIVER CIRCUIT DESCRIPTION (UHF MODELS)

    38
    • 3.8.1 Front End Filter

      38
    • 3.8.2 RF Amplifier (Q201)

      39
    • 3.8.3 First Mixer (Q202), Injection Amplifier (Q204)

      39
    • 3.8.4 Second Mixer/Detector (U201)

      39
  • 3.9 TRANSMITTER CIRCUIT DESCRIPTION (UHF MODELS)

    41
    • 3.9.1 First and Second Amplifiers

      41
    • 3.9.2 Third Amp and Predriver

      41
    • 3.9.3 Driver (Q600), Final (Q601)

      42
    • 3.9.4 Antenna Switch

      42
    • 3.9.5 Directional Coupler, Low-Pass Filter

      43
    • 3.9.6 Power Control (U500A/B, Q500-Q503)

      43
  • 3.10 SYNTHESIZER CIRCUIT DESCRIPTION (800/900 MHz MODELS)

    44
    • 3.10.1 Introduction

      44
    • 3.10.2 Voltage-Controlled Oscillator

      44
    • 3.10.3 VCO and TCXO Modulation

      46
    • 3.10.4 Active Filter (Q800)

      47
    • 3.10.5 Buffer Amplifier (Q801), Tx/Tx Switch (CR801/CR802)

      47
    • 3.10.6 Synthesizer Integrated Circuit (U804)

      48
    • 3.10.7 Lock Detect

      49
    • 3.10.8 Charge Pump

      49
    • 3.10.9 Shift Register (U800, U801) and Digital Potentiometer (U802) Programming

      49
  • 3.11 RECEIVER CIRCUIT DESCRIPTION (800/900 MHz MODELS)

    49
    • 3.11.1 Front End Filter

      49
    • 3.11.2 RF Amplifier (Q201)

      49
    • 3.11.3 First Mixer (Q202), Crystal Filter (Z204)

      50
    • 3.11.4 Second Mixer/Detector (U201)

      50
  • 3.12 TRANSMITTER CIRCUIT DESCRIPTION (800/900 MHz MODELS)

    51
    • 3.12.1 Predriver (Q506), Driver (Q507)

      51
    • 3.12.2 Power Amplifier Module (U600), Final (Q651)

      52
    • 3.12.3 Antenna Switch

      52
    • 3.12.4 Directional Coupler, Low- Pass Filter

      52
    • 3.12.5 Power Control (U500A/B, Q500- Q503)

      53
• SECTION 4 SERVICING

  55
  • 4.1 GENERAL

    55
    • 4.1.1 Periodic Checks

      55
    • 4.1.2 Schematic Diagrams and Component Layouts

      55
    • 4.1.3 Replacement Parts

      55
    • 4.1.4 Configuring Transceiver for Testing

      55
  • 4.2 SURFACE MOUNTED DEVICES (SMDs)

    55
    • 4.2.1 Servicing Techniques

      55
    • 4.2.2 Identifying SMD Resistors

      55
    • 4.2.3 SMD Capacitor Identification

      56
    • 4.2.4 SMD Inductor Identification

      57
    • 4.2.5 Transistor/Diode Identification

      57
  • 4.3 SYNTHESIZER TROUBLESHOOTING

    57
    • 4.3.1 Introduction

      57
    • 4.3.2 Reference Oscillator (U806)

      58
    • 4.3.3 VCO Module

      58
    • 4.3.4 Synthesizer IC (U804)

      58
    • 4.3.5 Determining Synthesizer Counter Divide Numbers

      59
  • 4.4 RECEIVER SERVICING

    59
  • 4.5 TRANSMITTER SERVICING

    59
  • 4.6 AUDIO/LOGIC BOARD SERVICING

    59
    • 4.6.1 Digital Circuits

      59
    • 4.6.2 Analog Circuits

      59
• SECTION 5 PARTS LIST

  60
• SECTION 6 SCHEMATICS AND BOARD LAYOUTS

  93