Motorola GTX/LCS 2000 Manuals

Manuals and User Guides for Motorola GTX/LCS 2000. We have 1 Motorola GTX/LCS 2000 manual available for free PDF download: Service Manual

Motorola GTX/LCS 2000 Service Manual

Motorola GTX/LCS 2000 Service Manual (84 pages)

Brand: Motorola | Category: Radio | Size: 2.37 MB

Table of Contents

Foreword
2
- Replacement Parts Ordering
  3
- Table of Contents
  4
GTX Mobile Radio Model Chart
8
GTX Options
8
GTX Accessories
9
LCS 2000 Mobile Radio Model Chart
10
LCS 2000 Options
10
LCS 2000 Accessories
11
Maintenance Specifications
12
Radio Model Numbering System
13
Section 1

14
Introduction

14
- Notational Conventions
  14
  - Warning
    14
  - Caution
    14
  - Note
    14
- Scope of this Manual
  14
- Safety Information
  14
- Air Bag Warning
  15
- LP Gas Warning
  15
Section 2

16
Basic Maintenance

16
- Introduction
  16
- Preventive Maintenance
  16
  - Inspection
    16
  - Cleaning
    16
  - Plastic Surfaces
    16
  - Circuit Boards and Components
    16
- Safe Handling of CMOS Devices
  17
  - Precautions
    17
- Repair Procedures and Techniques
  18
  - Parts Replacement
    18
  - Rigid Circuit Boards
    18
  - Chip Components
    18
    
    Chip Component Removal
    18
    
    Chip Component Replacement
    19
  - Over-Molded Pad-Array Carrier (OMPAC)
    19
    
    OMPAC Removal
    19
    
    OMPAC Replacement
    19
  - Shields
    20
    
    Shield Removal
    20
    
    Shield Replacement
    20
Section 3

22
Test Equipment, Service Aids, and Tools

22
- Test Equipment
  22
- Field Programming
  23
- Service Tools
  24
Section 4

26
Test Mode and Error Codes

26
- Front Panel Test Mode
  26
  - Test Mode/Entry
    26
  - Test Mode/Channel Selection
    26
  - Test Mode/Tx Modulation
    27
  - Fail Mode
    27
  - Exiting Test Mode
    27
Section 5

28
Disassembly & Reassembly

28
- Disassemble the Radio
  28
  - Remove the Control Head
    28
  - Remove the Top Cover
    29
  - Remove the Main Board
    29
  - Disassemble the Control Head
    30
- Assemble the Radio
  31
Section 6

32
Radio Tuning Procedure

32
- General
  32
- Tuning Procedure
  34
- Starting the Tuning Procedure
  34
- Reference Crystal Data
  34
- Tx Power
  34
- Reference Oscillator Alignment
  34
- Transmitter Power
  34
- Transmit Deviation Balance (Compensation)
  35
- Deviation Limit
  35
- Transmit Deviation Limit
  35
- Squelch
  35
- Ending the Tuning Procedure
  35
Section 7

36
Theory of Operation

36
- Introduction
  36
  - Overview
    36
- Receiver Detailed Functional Description
  37
- Transmitter Detailed Functional Description
  39
  - Power Control Circuitry
    40
    
    Power Set
    40
    
    Current Limit
    40
  - Thermal Protection
    40
- Synthesizer Detailed Functional Description
  41
- Controller Detailed Functional Description
  43
  - General
    43
  - Voltage Regulators
    43
  - Electronic On/Off
    44
  - Emergency
    44
  - Mechanical On/Off
    44
  - Ignition
    44
  - Hook
    45
  - Microprocessor Clock Synthesizer
    45
  - Serial Peripheral Interface (SPI)
    45
  - SBEP Serial Interface
    46
  - Microprocessor (Open Controller)
    46
  - One-Time Programmable (OTP) Memory
    47
  - Electrically Erasable Programmable Memory (EEPROM)
    47
  - Static Random Access Memory (SRAM)
    48
  - Control Head Model P
    48
- Controller Audio & Signaling Circuits
  49
  - General
    49
    
    Audio Signalling Filter IC (ASFIC)
    49
    
    Audio Ground
    49
  - Transmit Audio Circuits
    49
    
    MIC Input Path
    49
    
    External MIC Path
    50
    
    PTT Sensing and TX Audio Processing
    50
  - Transmit Signalling Circuits
    51
    
    Sub-Audible Data (PL/DPL)
    51
    
    High Speed Data
    52
    
    Dual Tone Multiple Frequency (DTMF) Data
    52
  - Receive Audio Circuits
    53
    
    Squelch Detect
    53
    
    Audio Processing and Digital Volume Control
    54
    
    Audio Amplification Speaker (+) Speaker (-)
    54
    
    Handset Audio
    55
    
    Filtered Audio
    55
    
    Discriminator Audio (Unfiltered)
    55
  - Receive Signalling Circuits
    56
    
    Sub-Audible Data (PL/DPL) and High Speed Data Decoder
    56
    
    Alert Tone Circuits
    56
Section 8

58
Troubleshooting

58
- Overview
  58
- Troubleshooting Charts
  58
  - Receiver
    58
  - Synthesizer
    59
  - Power Amplifier
    63
  - Controller
    63
  - Control Head
    63
Schematic Diagrams, Circuit Board Details, & Parts Lists

66

Advertisement

Advertisement

Related Products

Motorola Categories

Cell Phone

Cell Phone Two-Way Radio Baby Monitor

Cordless Telephone

Cordless Telephone Radio

More Motorola Manuals