Motorola DR 3000 service manual Removing Transmit Radio, Tx Radio Disassembly

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Disassembly/Reassembly Procedures: Disassembly Procedures — Detailed

5-7

 

 

5.6.4Removing Transmit Radio

(Refer to Figure 5-5)

1.Disconnect flex cable from 30-position connector on Transmit radio, noting orientation of cable which is identified with a solid blue line. This is important for reassembly.

2.Disconnect SSI flex cable from the connector on the Transmit radio, noting orientation of cable which is identified with a solid black line. This is important for reassembly.

3.Loosen and remove the four M4 lock nuts that secure the Transmit radio assembly with a 7 mm socket driver.

4.Disconnect the power cable from the Transmit radio.

5.Disconnect the antenna cable from the Transmit radio.

6.Disconnect the accessory connector from the Transmit radio.

7.Lift the Transmit radio assembly out of the enclosure and place on a flat surface.

8.Loosen and remove the two M5 screws and washers that secure the Transmit radio to the bracket using a T25 TORX™ driver.

M3 Screws (7)

Heatsink

Thermal Pad

Transmit Radio

M5 Screw (1)

M5 Screw (1)

Washer

Transmit Bracket

Figure 5-5. Tx Radio Disassembly

6866576D03-A

February 21, 2007

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Contents Mototrbo Repeater UHF Range 1 Mototrbo Repeater Foreword Product Safety and RF Exposure ComplianceDocument History February 21 Table of Contents Appendix a Emea Regional Warranty, Service and Support Chapter Basic TroubleshootingGlossary Glossary-1 List of Figures List of Tables Related Publications Notations Used in This Manual IntroductionRepeater Description AA M Mototrbo Repeater Model Numbering SchemeMDM27QPR9JA7AN Model DescriptionUHF1 SpecificationsTransmitter Introduction Specifications Recommended Test Equipment Test Equipment and Service AidsProgramming Cables Service AidsWire Diagram Test Equipment and Service Aids Programming Cables AM, CW, FM FM Transceiver Performance TestingSetup GeneralSinad Customer Programming Software Setup Repeater Tuning and ProgrammingACC USB Repeater Tuning SetupInspection Disassembly/Reassembly ProceduresPreventive Maintenance Cleaning ProceduresU t i o n Safe Handling of Cmos and Ldmos DevicesLead Free Solder Paste Part Number List Repair Procedures and Techniques GeneralDisassembly of Cover Disassembly Procedures DetailedDisassembling and Reassembling the Repeater General Disassembly of Repeater Indicator Board Repeater Indicator Board Disassembly Disassembly of FanRemoving Transmit Radio Tx Radio DisassemblyRemoving Thermal Pad and Heatsink Receive Radio Removal Disassembly of Connector Board Assembly Disassembly of Receive RadioDisassembly of Power Supply Transceiver Board and Receiver Board Removal Transmit and Receive Radio Disassembly DetailedRF/DC Retention Clips Removal 10. Transceiver Board Removal 12. Transceiver Board with Thermal Pads Transmit and Receive Radio Reassembly DetailedOccur Transceiver Board and Receiver Board ReassemblyRetention Clips RF/DC17. Assembling of PA Pad and O-ring 18. Assembling Die Cast Cover onto Chassis 19. Screw Sequence to Tighten Die Cast Cover Thermal Pad Replacement Procedure22. Placing Thermal Pads on PA and Transistor Components Reassembly of the Receive Bracket Assembly to the Enclosure Reassembly of Power SupplyReassembly of Receive Radio Reassembly of Connector Board AssemblyReplacing the Thermal Pad and Heatsink Reassembly of Transmit RadioReassembly of Repeater Indicator Board Reassembly of FanReassembly of Cover 24. Repeater Assembly Exploded View Repeater Exploded Mechanical Views and Parts Lists25. Receive Bracket and Radio Assembly Exploded View 6866576D03-A Torque Chart Disassembly/Reassembly Procedures Torque Chart Replacement Service Kit Procedures Basic TroubleshootingHigh Power RF Precaution LED LED Indicator DescriptionsWarranty Period and Return Instructions Warranty and Service SupportAfter Warranty Period Piece Parts European Radio Support Centre ErscFurther Assistance From Motorola Technical SupportEmea Regional Warranty, Service and Technical Support Glossary VIP TOTTPL UHF@6866576D03@