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Motorola EP450 service manual Motorola Part Description Number

Models: EP450

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Mechanical View and Parts List	6-17

	Motorola
Item	Part	Description
	Number

1	See Section 6	Antenna

2	3680530Z02	Knob, Frequency

3	1386440Z01	Escutcheon, Top; 4 Ch.
	1386440Z02	Escutcheon, Top; 16 Ch.

4	5886627Z01	Antenna Adaptor/Seal
		(Optional)

5	1586391Z03	Housing, Full, with Lens

6	3586621Z01	Speaker, Felt

7	3886489Z01	PTT, Rubber

8	4586439Z01	PTT, Plastic

9	5085738Z08	Speaker

10	4286620Z01	Retainer Speaker

11	3586621Z02	Felt, Microphone

12	0780608V01	Boot, Microphone

13	5085880L01	Microphone

14	5104949J16	Display, LCD Module

15	0104017J18	Keypad Board Assy

16	1586437Z01	Shroud, Audio Jack

17	3286431Z02	Seal, Main O-ring

18	7586436Z01	Pad, PA Interface

19	2786389Z01	Chassis

20	3286435Z01	Seal, Battery Contact Block

21	0304726J05	Screws, Chassis; 4 Used

22	4286648Z01	Plate, Retainer

23	0909059E19	Connector, 28-pin

24	0986632Z02	9 Pin Connector

25	7586654Z03	Keypad, Full

26	5586445Z02	Latch Assembly

27	4105944K01	Spring, Latch; 2 Used

28	3886441Z01	Cap, Dust

29	3286432Z01	Seal, Control Shaft

30	0386434Z01	Screw, Speaker Retainer

31	3386443Z01	Label, Escutcheon Seal

32	6186446Z02	Lightpipe

33	3680529Z01	Knob, Volume

	Motorola
Item	Part	Description
	Number

	NON-REFERENCED ITEMS

	3386625Z01	Nameplate, Motorola

		Nameplate, EP450

Image 62

Motorola EP450 service manual Motorola Part Description Number

Contents

EP450 HKLN4215A Computer Software Copyrights Product Safety and RF Exposure ComplianceForeword Document CopyrightsTable of Contents Display Model Disassembly and Re-assembly Appendix a Accessories Troubleshooting TablesList of Figures 13. Microphone and Speaker Wires Re-assembly List of Tables Related PublicationsModel Charts and Test Specifications Radio Model InformationModel Chart for VHF 146-174 MHz EP450, VHF, 146-174 MHz Model DescriptionTransmitter VHF Test SpecificationsGeneral ReceiverModel Chart for UHF 403-440 MHz EP450, UHF, 403-440 MHz Model Chart for UHF 438-470 MHz EP450, UHF, 438-470 MHz Model Chart for UHF 465-495 MHz EP450, UHF, 465-495 MHz UHF Test Specifications LAH65SDH9AA4NMIL Standards MIL-STDMajor Assemblies Theory Of OperationIntroduction If IC Test Equipment Test Equipment, Service Aids, and Service ToolsMotorola Part No Description Characteristics Application Service Aids Motorola Part Description ApplicationTest Equipment, Service Aids, and Service Tools Service Aids Programming/Test Cable 5mmGeneral Power-Up Self TestPerformance Checks RF Test Mode Service Monitor Test Set Power SupplyNo. Description Function Beeps No. of BKCVHF R2 UHF R1 UHF R2 UHF R3 Test Mode Test Name Communications Analyzer Radio Test Set CommentsPerformance Checks RF Test Mode Radio Alignment Procedures CPS Programming SetupRadio Tuning Setup Radio Tuning SetupReference Oscillator Warp Initial Test Equipment Control SettingsTransmitter Alignment Options Modulation Balance Attenuation Under Tx Align menu, select Reference Oscillator Warp FigureTransmit Power Tuning Transmit Power Window High PowerTo Perform Transmit High Power Tuning, do the following To Perform Transmit Low Power Tuning, do the followingVCO Attenuation 25 kHz When using test box RLN4460VCO Attenuation Under the Tx Align menu, select VCO Attenuation 12.5 kHz VCO Attenuation 12.5 kHzVCO Attenuation 20 kHz Under the Tx Align menu, select VCO Attenuation 20 kHzDtmf Deviation Tuning Under Tx Align, select Dtmf Deviation FigureUnder the Tx Align, select MDC-1200 Signaling Figure Receiver TuningMDC-1200 Deviation Tuning Rated Volume Tuning Perform the rated volume tuning procedure as followsSquelch Tuning Manual Squelch TuningRssi System Level Tuning Auto TuneUtilities Rssi Display TuningUnder the Rx Align menu, select Rssi Display Tuning Radio-to-Radio CloningProcedure 12. Side Button LocationsRadio Alignment Procedures Radio-to-Radio Cloning Cleaning Procedures Display Model Disassembly and Re-assemblyPreventive Maintenance Cleaning External Plastic SurfacesCleaning Internal Circuit Boards and Components Safe Handling of Cmos and Ldmos DevicesDisassembling and Re-assembling the Radio General Radio Disassembly DetailedFront Cover From Chassis Disassembly Antenna and Knob Removal Keyboard Flex Connection Dust Cover Disassembly Speaker and Microphone DisassemblyPTT Disassembly Keyboard RemovalChassis Disassembly Audio jack shroud can be removed from the main boardMicrophone and Speaker Re-assembly Radio Re-assembly DetailedDust Cover Re-assembly 12. Microphone Re-assembly Keypad and LCD/Keyboard Re-assembly 14. Keypad Re-assemblyKeyboard Retainer Re-assembly Chassis Assembly/Re-assemblyChassis and Front Cover Re-assembly 17. Main Board onto Chassis Re-assembly18. Microphone and Speaker Wires Re-assembly PTT Re-assembly 20. Fastening the ChassisMechanical View and Parts List 1 EP450 Display Exploded View and Parts ListMotorola Part Description Number MotorolaDecember 3 Non-Display Model Disassembly and Re-assembly IntroductionSafe Handling of Cmos and Ldmos Devices Disassembling and Re-assembling the Radio General Antenna and Knob Removal Speaker Connector Shroud Microphone Speaker and Microphone Disassembly Chassis Disassembly Removal of Main Board from ChassisDust Cap Re-assembly 11. Speaker Re-assembly 12. Installation of Main Board onto Chassis 13. Microphone and Speaker Wires Re-assembly 15. PTT Re-assembly 1 EP450 Non-Display Exploded View and Parts List 16. EP450 Non-Display Radio Exploded View14Mechanical View and Parts List Operational Error Codes Troubleshooting TablesPower-Up Error Codes Error Code Possible Causes Corrective ActionTroubleshooting Table for Receiver Troubleshooting Table for Transmitter Troubleshooting Tables Troubleshooting Table for Transmitter Antennas Appendix a AccessoriesCarrying Accessories ChargersAudio Accessories HeadsetsRemote Speaker Microphones ManualsAccessories Replacement Parts Ordering Appendix B Warranty, Service Support, and Replacement PartsWarranty Scope of ManualTelephone Orders Motorola OnlineMail Orders Fax OrdersTechnical Support Motorola de Colombia Service CenterMotorola de Mexico Service Center Appendix B-4 Glossary of Terms Term DefinitionReset