Motorola Astro Digital Saber III Servisní příručka

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Strany 1 - *68P81076C05*

ASTRO Digital SABERPortable RadiosBasic Service Manual*68P81076C05*

Strany 3 - CONTENTS

A. Introduction to This SectionThis section of the manual describes preventivemaintenance, handling precautions, and some basicrepair procedures and t

Strany 4 - CONTENTS (cont.)

5. Use a static-safeguarded workstation, which canbe accomplished through the use of an anti-statickit (Motorola part number 01-80386A82). This kitinc

Strany 5 - H04 U CF 9 P W 7 A N S P 0 1

A. Recommended Test EquipmentThe list of equipment contained in Table 2 includesall of the standard test equipment required for servic-ing two-way por

Strany 6 - SPECIFICATIONS FOR VHF RADIOS

B. Service Aids and Recommended ToolsRefer to the following tables, “Service Aids forBoard-Level Troubleshooting” and “RecommendedTest Tools for Board

Strany 7 - SPECIFICATIONS FOR UHF RADIOS

SECTION IV. PERFORMANCE CHECKS7A. Introduction to This SectionThis section covers performance checks used toverify the radio meets published specific

Strany 8 - GENERAL RECEIVER TRANSMITTER

f. Press the top programmable button again;“3/1” appears, which indicates that the top programmable button is in the closed condition.g. Rotate the mo

Strany 9 - SECTION I. INTRODUCTION

9Reference Mode: PWR MON TEST MODE, PTT to continuous Frequency error to be ≤ ±600HzFrequency 4th channel test frequency❖4 CSQ (during theMonitor: Fre

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10Reference Mode: PWR MON TEST MODE, PTT to continuous Frequency error to be ≤ ±600Hz.Frequency 4th channel test frequency❖4 CSQ (during theMonitor: F

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A. Introduction to This SectionThis section describes both receiver and transmit-ter radio alignment procedures.B. GeneralAn IBM personal computer (PC

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FOREWORDThe information contained in this manual relates to all ASTRO Digital SABER radios, unless otherwisespecified.SAFETY INFORMATIONThe Federal Co

Strany 13 - Motorola

All service and tuning procedures are performedfrom the SERVICE menu, which is selected by press-ing F2 from the MAIN MENU. Figure 2 illustrates howth

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Perform the following procedures in thesequence indicated.NOTESome of the following screens may vary dependingupon the radio under test and the versio

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D. Transmit Power AlignmentNOTE• All power measurements are to be made at theantenna port.• The transmitter power setting keeps the radiat-ed power at

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E. Transmit Deviation Balance (Compensation) AlignmentCompensation alignment balances the modulationsensitivity of the VCO and reference modulation (s

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F. Transmit Deviation Limit AlignmentIMPORTANT NOTEPut the radio in the RF test mode and scroll to theASTRO test environment, indicated by “AST” onthe

Strany 18 - Test System

G. Front-End Filter Alignment (VHF/UHF Only)NOTEThis procedure is only required for tuning the front-end filter varactors in the VHF and UHF models.Th

Strany 20 - Figure 3. Softpot Concept

A. Disassembly(Refer to the following diagrams and the explodedview diagram located in the back of this manual.)1. Turn off the radio by rotating the

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5. Gently push the center bottom edge of the frontshield assembly and lift it away from the bottomof the chassis. If necessary, use a small slottedscr

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8. Remove the center shield from the chassis byinserting a thin slotted screwdriver between eachof five center-shield release clips and the corre-spon

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Basic Service Manual68P81076C05-OCONTENTS© 1993 by Motorola, Inc., Radio Products Group8000 W. Sunrise Blvd., Ft. Lauderdale, FL 33322Printed in U.S.A

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• When the knob is properly inserted, the armsof the switch bracket will snap into position(approximately 0.2 inches apart), the knob willnot be loose

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23SECTION VII. BASIC THEORY OF OPERATIONA. Introduction to This SectionThe following theory will help isolate the problemto a particular board. Using

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24active mixer coupled by transformers. Injection is pro-vided by the VCO through an injection filter. See Table14 for local oscillator (LO) and first

Strany 27 - Do not depress the PTT switch

A. Introduction to This SectionThis section of the manual contains troubleshoot-ing charts, error codes, a functional block diagram,interconnect diagr

Strany 28 - CONNECTOR

D. Operational Error CodesDuring radio operation, the radio performs dynam-ic tests to determine if the radio is working properly.Problems detected du

Strany 29 - MAEPF-23378

27Symptom Possible Cause Correction or Test (Measurements Taken at Room Temperature)No RF Power 1. TX Power Level Check TX power level and frequency

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28NOTES

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RELATED PUBLICATIONS AVAILABLE SEPARATELYASTRO Digital SABER User’s Guide ...

Strany 32 - VHF UHF 800MHz

iiiTypical Model Number: H04 U CF 9 P W 7 A N S P 0 1Position: 123 4 5 6 7 8 9 1011 1213141516Position 1 - Type of UnitH=Hand-Held PortablePositions 2

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SPECIFICATIONS FOR VHF RADIOSAll specifications are per Electronic Industries Association (EIA) 316B unless otherwise noted.RF Power: 136-174MHz 1Watt

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SPECIFICATIONS FOR UHF RADIOSAll specifications are per Electronic Industries Association (EIA) 316B unless otherwise noted.RF Power:450-512MHz1Watt/4

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SPECIFICATIONS FOR 800MHz RADIOSAll specifications are per Electronic Industries Association (EIA) 316B unless otherwise noted.RF Power: 3 WattsFrequ

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A. GeneralThis manual includes all the information necessaryto maintain peak product performance and maximumworking-time using the board-replacement s

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