Basic Service Manual - Repeater Builder

1 HT750 MTX850 MTX8250HT1250 MTX850 LSMTX8250 LSHT1250 LSHT1250 LS+MTX950HT1550 XLSMTX9250 Portable RadiosProfessional RadioBasic Service ManualMotorola, West Sunrise BoulevardFort Lauderdale, Florida 3332268P80906Z54-DiiForewordThis Manual provides sufficient information to enable qualified Service technicians to troubleshoot and repair CDM Series mobile radios to the component Safety and RF Exposure ComplianceATTENTION!This radio is restricted to occupational use only to satisfy FCC RF energy exposure requirements. Before using this product, read the RF energy awareness information and operating instructions in the Product Safety and RF Exposure booklet (Motorola Publication part number 68P81095C98) to ensure compliance with RF energy exposure a list of Motorola-approved antennas, batteries, and other accessories, visit the following web site which lists approved accessories: Software CopyrightsThe Motorola products described in this Manual may include copyrighted Motorola computer programs stored in semiconductor memories or other media.

2 Laws in the United States and other countries preserve for Motorola certain exclusive rights for copyrighted computer programs, including, but not limited to, the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Motorola computer programs contained in the Motorola products described in this Manual may not be copied, reproduced, modified, reverse-engineered, or distributed in any manner without the express written permission of Motorola. Furthermore, the purchase of Motorola products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Motorola, except for the normal non-exclusive license to use that arises by operation of law in the sale of a CopyrightsNo duplication or distribution of this document or any portion thereof shall take place without the express written permission of Motorola.

3 No part of this Manual may be reproduced, distributed, or transmitted in any form or by any means, electronic or mechanical, for any purpose without the express written permission of information in this document is carefully examined, and is believed to be entirely reliable. However, no responsibility is assumed for inaccuracies. Furthermore, Motorola reserves the right to make changes to any products herein to improve readability, function, or design. Motorola does not assume any liability arising out of the applications or use of any product or circuit described herein; nor does it cover any license under its patent rights nor the rights of and the Stylized M logo are registered in the US Patent & Trademark Office.

4 All other products or Service names are the property of their respective owners. Motorola, Inc. using this product, read the operating instructions for safe usage contained in the Product Safety and RF Exposure booklet.!C a u t i o niiiTable of ContentsForeword ..iiProduct Safety and RF Exposure Compliance .. iiComputer Software iiDocument Copyrights .. iiDisclaimer .. iiList of Figures ..ixList of Tables ..xiChapter 1 Introduction .. Scope of Warranty and Service Warranty Period and Return After Warranty Period .. Piece Parts Technical Support .. Radio Model 1-4 Chapter 2 Intrinsically Safe Radio Information .. FMRC Approved Repair of FMRC Approved Products.

5 Repair .. Relabeling .. Do Not Substitute Options or 2-3 Chapter 3 Maintenance .. Introduction .. Preventive Maintenance .. Cleaning Procedures .. Safe Handling of CMOS and LDMOS Devices .. Repair Procedures and Techniques General .. Disassembling and Reassembling the Radio General .. Detailed Radio Disassembly .. Front Cover from Chassis Disassembly .. Chassis Keypad, Display, and Keypad/PassPort/Option Board Disassembly .. Speaker, Microphone, and Universal Connector Flex Disassembly .. PTT Disassembly .. Control Top Disassembly .. Detailed Radio Reassembly .. Control Top Reassembly.

6 PTT Reassembly .. Speaker, Microphone, and Universal Connector Flex Reassembly .. Keypad, Display, and Keypad/PassPort/Option Board Chassis Assembly Reassembly .. Chassis and Front Cover Reassembly .. DTMF Retrofit Kit Procedure (Optional Upgrade Procedure).. Option Board Installation .. HT750 Radio Exploded Mechanical View and Parts List .. HT750 Exploded View .. HT750 Exploded View Parts List .. HT1250 and HT1250 LS Exploded View .. HT1250 and HT1250 LS Parts List .. HT1250 LS+ Exploded View .. HT1250 LS+ Exploded View Parts List .. MTX850 Exploded View .. MTX850 Exploded View Parts List .. MTX850 LS Exploded View.

7 MTX850 LS Exploded View Parts List .. MTX8250 Exploded View .. MTX8250 Exploded View Parts List .. MTX8250 LS Exploded View .. MTX8250 LS Exploded View Parts List .. HT1550 XLS Exploded HT1550 XLS Exploded View Parts List .. MTX950 Exploded MTX950 Exploded View Parts MTX9250 Exploded MTX9250 Exploded View Parts Service Test Configuring and Wiring the Programming/Test Cable .. 3-37 Chapter 4 Transceiver Performance Testing .. General .. RF Test Mode .. Test Frequencies for Display and Non-Display Radios .. Receiver Performance Tests .. 4-7 Chapter 5 Radio Tuning, Programming, Cloning, Lowband Antenna Cutting Procedure, PassPort Tone Options, and Diagnostic Introduction.

8 Global Radio Tuning Initial Test Equipment Setup .. CPS Programming Setup .. Cloning (Conventional and LTR) .. Error Codes (Display Radios Only).. Cloning (Privacy Plus) .. Cloning (PassPort).. Lowband Molded Antenna Cut HT1250 LS+ PassPort Tone HT1250 LS+ Special Diagnostic Functions .. 5-7 Chapter 6 Power Up Error Codes - Conventional and LTR Radios .. Error Codes - Privacy Plus .. Error Codes - PassPort .. Operation Display Codes .. 6-3 Chapter 7 Accessories .. HT750/HT1250/HT1250 LS/HT1250 LS+/HT1550 XLS/MTX850/MTX950/MTX850 LS/MTX8250/MTX9250/MTX8250 LS Accessories .. Antennas .. Carrying Accessories.

9 Carry Cases .. Chargers .. Vehicular Accessories .. Batteries .. Adapters .. Service Aids .. Audio Accessories .. Option Boards* (All option boards below are not compatible with HT1550 XLS) .. Remote Speaker Microphones .. Manuals .. Retrofit Front Cover Kits .. 7-5 Chapter 8 Model Chart and Test Specifications .. UHF 403 470 MHz (Conventional) .. UHF 450 512 MHz (Conventional) .. UHF 403 470 MHz (LTR and PassPort).. UHF 450 512 MHz (LTR and PassPort).. UHF 403 470 MHz (Conventional/LTR) .. UHF 450 512 MHz (Conventional/LTR) .. VHF 136 174 VHF 136 174 MHz (Conventional/LTR) .. VHF, 136 174 MHz (LTR & PassPort).

10 LowBand 42/35 50 MHz .. 800 MHz (LTR).. 800 MHz (Privacy Plus) .. 900 MHz (Privacy Plus) .. Specifications, HT750 Radio .. Specifications, HT1250 Radio .. Specifications, HT1250 LS+ Radio .. Specifications, HT1550 XLS Radio .. Specifications, MTX850/MTX8250 (800 MHz),MTX950/MTX9250 (900 MHz) Specifications, MTX850 LS and MTX8250 LS (800 MHz) Radios .. 8-23 Glossary .. Glossary-1viiiixLIST OF FIGURESF igure 3-1: Battery Removal .. 3-4 Figure 3-2: Knob Removal .. 3-4 Figure 3-3: Chassis Removal .. 3-5 Figure 3-4: Unlatch Flex Connectors .. 3-5 Figure 3-5: Remove Main Board from Chassis .. 3-6 Figure 3-6: Remove 3-7 Figure 3-5: Removing the Keypad Retainer and Other Boards from the 3-8 Figure 3-6: Removal Speaker-Microphone 3-9 Figure 3-7: PTT 3-9 Figure 3-8: Lock Retainer Catches to the Radio s 3-11 Figure 3-9: Fastening the Chassis.