Motorola 438-470 MHz User Manuals

Table of Contents

• Section 1: Safety Information

  18
  • General

    18
    • WARNING

      18
    • CAUTION

      18
  • FCC Safety Information

    18
• Section 2: Intrinsically Safe Radio Infor...

  20
  • FMRC Approved Equipment

    20
  • Repair of FMRC Approved Products

    20
    • Repair

      21
    • Relabeling

      21
    • Do Not Substitute Options or Accessories

      21
• Section 3: Disassembly/Reassembly

  22
  • Remove Battery

    22
  • Remove Belt Clip from Battery

    22
  • Remove Chassis

    22
  • Remove the Main Board

    23
  • Re-assembly of Radio

    23
• Section 4: Theory of Operation

  24
  • Microcomputer

    24
  • Receiver

    24
  • Transmitter

    25
  • Frequency Generation Circuitry

    26
• Section 5: Troubleshooting

  32
• Section 6-7 Component Location Diagrams, S...

  38
  • General

    38
  • Controller

    38
  • Transceiver

    38
  • Schematic Notes

    38
  • Battery Filter Board

    38
  • Flex Circuit

    38
  • Parts List: Controller Components

    44
  • Parts List: HLD9440A, 145-174 MHz VHF Transceiver

    45
  • Parts List: HLE9480A and HLE9481A, 438-470 MHz UHF Transciver

    46
  • Parts List: GP350 Basic Mechanical

    47
  • Parts List: HMN9041A Remote Speaker/Microphone

    54