Motorola Portable Radio Ep450 Detailled Hkln4216c Manual
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*H KLN42 16C * HKLN421 6C EP4 50 ™ Po rtab le R ad io Detailed Service Manual MOTOROLA and the St ylized M Lo go are re gistered in the U.S. Patent and Trademark Office . All other product or service names are the propert y of their respective owners . © Motorola, Inc. 2005©
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EP450 Portable Radio Detailed Service Manual VHF 136-162 MHz VHF 146-174 MHz UHF 403-440 MHz UHF 438-470 MHz UHF 465-495 MHz UHF 490-527 MHz Motorola, Inc. 1301 E. Algonquin Road Schaumburg, IL 60196 HKLN4216C
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ii Foreword This manual is intended for use by service technicians familiar with portable two-way radios. It contains service information required for the equipment described and is current as of the printing date. Changes which occur after the printing date may be incorporated by a complete Manual revision or alternatively as additions Product Safety and RF Exposure Compliance AT T E N T I O N ! This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements. Before...
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Table of Contentsiii HKLN4216CJune, 2005 Table of Contents Foreword ..................................................................................................................................................... ii Product Safety and RF Exposure Compliance ............................................................................................ ii Computer Software Copyrights ................................................................................................................... ii...
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ivTable of Contents June, 2005HKLN4216C 4.3.2 Antenna Switch ................................................................................................................. 4-3 4.3.3 Harmonic Filter.................................................................................................................. 4-3 4.3.4 Antenna Matching Network ............................................................................................... 4-4 4.3.5 Power Control...
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Table of Contentsv HKLN4216CJune, 2005 Figure 7-9. VHF (136-162 MHz) Controller Interconnect Schematic Diagram (8486769Z02-A) ...... 7-11 Figure 7-10. VHF (136-162 MHz) Microprocessor Circuitry Schematic Diagram (8486769Z02-A) ... 7-12 Figure 7-11. VHF (136-162 MHz) Audio Circuitry Schematic Diagram (8486769Z02-A) ................... 7-13 Figure 7-12. VHF (136-162 MHz) DC Regulation Schematic Diagram (8486769Z02-A) .................. 7-14 Figure 7-13. VHF (136-162 MHz) Keypad Board Schematic Diagram...
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viTable of Contents June, 2005HKLN4216C VHF (146-174 MHz) 8486342Z13-C Radio Parts List ........................................................................... 7-55 VHF (146-174 MHz) Keypad Board Parts List (8466565A03-B) .......................................................... 7-58 Chapter 7 VHF 146-174 MHz Schematic Diagrams, Overlays, and Parts Lists (8486769Z04-C) ....................................... 7-59 Figure 7-45. VHF (146-174 MHz) Radio Circuit Block Interconnect Diagram...
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Table of Contentsvii HKLN4216CJune, 2005 9.3.4 Antenna Matching Network............................................................................................... 9-4 9.3.5 Power Control ................................................................................................................... 9-4 9.4 UHF Frequency Generation Circuitry ............................................................................................ 9-4 9.4.1 Fractional-N Synthesizer...
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viiiTable of Contents June, 2005HKLN4216C 13.1.2 Six Layer Circuit Board ...................................................................................................13-3 13.2 Speaker and Microphone Schematic ...........................................................................................13-3 13.2.1 Speaker and Microphone Parts List ................................................................................ 13-3 Chapter 13 UHF 403-440 MHz 8486635Z03-O Schematic Diagrams, Overlays,...