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Manafacture: EFJohnson File size: 11.35 mb File name: 9800 Series Service Manual.pdf Language of manual:

242-984x-2xx (UHF) Part No. 242-988x-2xx (800 MHz) Part No. 242-989x-2xx (900 MHz) Copyright © 2001 by the E.F. Johnson Company The E.F. Johnson Company, which was founded in 1923, provides wireless communication systems solutions for public safety, government, and commercial customers. The company designs, manufactures, and markets conventional and trunked radio systems, mobile and portable subscriber radios, repeaters, and Project 25 digital radio products. Viking Head/EFJohnson logo, LTR®, LTR-Net™, Multi-Net®, and Call Guard® are trademarks of the E.F. Johnson Company. SMARTNET™ and SmartZone® are trademarks of Motorola, Inc. All other company and/or product names used in this manual are trademarks and/or registered trademarks of their respective manufacturer. Information in this manual is subject to change without notice. TABLE OF CONTENTS TABLE OF CONTENTS 1 GENERAL INFORMATION 1.1 SCOPE OF MANUAL . . . . . . . . . . . . . . . . . . . .1-1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 LTR®, Low Tier, and Data Models. . . . . . . . . . 1-1 1.2 TRANSCEIVER DESCRIPTION . . . . . . . . . . .1-1 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Available Frequency Bands . . . . . . . . . . . . . . . . 1-1 Front and Remote Mounting . . . . . . . . . . . . . . . 1-2 NPSPAC Models (800 MHz Only) . . . . . . . . . . 1-2 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Transceiver Alignment. . . . . . . . . . . . . . . . . . . . 1-2 1.3 PART NUMBER BREAKDOWN. . . . . . . . . . .1-2 1.4 TRANSCEIVER IDENTIFICATION . . . . . . . .1-3 1.5 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . .1-3 1.6 PRODUCT WARRANTY . . . . . . . . . . . . . . . . .1-4 1.7 FACTORY CUSTOMER SERVICE . . . . . . . .1-4 1.8 FACTORY RETURNS . . . . . . . . . . . . . . . . . . .1-5 1.9 REPLACEMENT PARTS . . . . . . . . . . . . . . . . .1-5 1.10 INTERNET HOME PAGE. . . . . . . . . . . . . . . . .1-5 2 INSTALLATION 2.1 GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1 Scope of Instructions . . . . . . . . . . . . . . . . . . . . . 2-1 Performance Tests . . . . . . . . . . . . . . . . . . . . . . . 2-1 Transceiver Programming . . . . . . . . . . . . . . . . . 2-2 Required Power Source . . . . . . . . . . . . . . . . . . . 2-2 2.2 MOUNTING THE TRANSCEIVER . . . . . . . . .2-2 Selecting A Mounting Location. . . . . . . . . . . . . 2-2 Installation Components. . . . . . . . . . . . . . . . . . . 2-2 Attaching Mounting Bracket . . . . . . . . . . . . . . . 2-2 2.3 POWER CABLE INSTALLATION . . . . . . . . .2-3 2.4 ACCESSORY CABLE INSTALLATION . . . .2-4 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 Accessory Pigtail Installation. . . . . . . . . . . . . . . 2-5 Connecting Ignition Sense Wire. . . . . . . . . . . . . 2-5 Connecting Horn Alert Wire . . . . . . . . . . . . . . . 2-6 Other Accessory Cable Outputs. . . . . . . . . . . . . 2-6 2.5 REMOTE CONTROL UNIT INSTALLATION2-6 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 Mounting Remote Control Unit. . . . . . . . . . . . . 2-6 2.6 USING AN EXTERNAL SPEAKER . . . . . . . .2-7 2.7 DATA CABLE INSTALLATION . . . . . . . . . . .2-7 General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 Data Cable Installation. . . . . . . . . . . . . . . . . . . . 2-8 2.8 KEY CAP KITS . . . . . . . . . . . . . . . . . . . . . . . . .2-8 Multi-Net and LTR-Net Models. . . . . . . . . . . . . 2-8 SMARTNET/SmartZone Models. . . . . . . . . . . . 2-9 3 CIRCUIT DESCRIPTION 3.1 GENERAL TRANSCEIVER DESCRIPTION 3-1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Circuit Protection (Fuses). . . . . . . . . . . . . . . . . . 3-1 Synthesizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 Audio/Logic Board . . . . . . . . . . . . . . . . . . . . . . . 3-1 Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 POWER DISTRIBUTION AND SWITCHING 3-2 Power Switching Control . . . . . . . . . . . . . . . . . . 3-2 Supply Switching . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.3 AUDIO/LOGIC BOARD DIGITAL CIRCUIT 3-4 Microcontroller (U101). . . . . . . . . . . . . . . . . . . . 3-4 Memory and Latch Programming. . . . . . . . . . . . 3-6 3.4 RECEIVE AUDIO/DATA PROCESSING . . . 3-7 Amplifier (U301B) . . . . . . . . . . . . . . . . . . . . . . . 3-7 Receive Audio Processing. . . . . . . . . . . . . . . . . . 3-7 Receive Data Processing. . . . . . . . . . . . . . . . . . . 3-8 Squelch Circuit (U304A, U304B). . . . . . . . . . . . 3-9 3.5 TRANSMIT AUDIO/DATA PROCESSING . 3-9 Microphone Amplifier (U303B), High-Pass Filter (U303C). . . . . . . . . . . . . . . . 3-9 Summing Amplifier (U303D), Pre-Emphasis/ Limiter (U303A). . . . . . . . . . . . . . . . . . . . . . 3-10 Splatter Filter (U302B, U302C) . . . . . . . . . . . ...

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