Motorola GM660 Manuals

Manuals and User Guides for Motorola GM660. We have 3 Motorola GM660 manuals available for free PDF download: Service Information

Motorola GM660 Service Information

Motorola GM660 Service Information (32 pages)

GM Series Professional Radio

Brand: Motorola | Category: Radio | Size: 1.16 MB

Table of Contents

Computer Software Copyrights
2
Table of Contents
3
Chapter 1 MODEL OVERVIEW

5
Chapter 2 THEORY of OPERATION

7
- Introduction
  7
- Controlhead Model for GM140, GM340 and GM640
  7
  - Power Supplies
    7
  - Power on / off
    7
  - Microprocessor Circuit
    7
  - SBEP Serial Interface
    8
  - Keypad Keys
    8
  - Status LED and Back Light Circuit
    9
  - Microphone Connector Signals
    9
  - Speaker
    10
  - Electrostatic Transient Protection
    10
- Controlhead Model for GM160, GM360 and GM660
  10
  - Power Supplies
    10
  - Power on / off
    10
  - Microprocessor Circuit
    11
  - SBEP Serial Interface
    11
  - Keypad Keys
    12
  - Status LED and Back Light Circuit
    12
  - Liquid Crystal Display (LCD)
    12
  - Microphone Connector Signals
    13
  - Speaker
    14
  - Electrostatic Transient Protection
    14
- Controlhead Model for GM380 and GM1280
  14
  - Power Supplies
    14
  - Voltage Regulator Circuit
    14
  - Power on / off
    15
  - Microprocessor Circuit
    15
  - SBEP Serial Interface
    15
  - Keypad Keys
    16
  - Status LED and Back Light Circuit
    16
  - Liquid Crystal Display (LCD)
    17
  - Microphone Connector Signals
    17
  - Speaker
    18
  - Electrostatic Transient Protection
    18
Chapter 3 TROUBLESHOOTING CHARTS

19
- On/Off
  19
- Microprocessor
  20
- Display
  23
- Backlight
  24
- On/Off
  25
- Microprocessor
  26
- Display
  28
- Keypad Backlight
  29
- Display Backlight
  30
Chapter 4 CONTROLHEAD PCB/SCHEMATICS/PARTS LISTS

31
- Allocation of Schematics and Circuit Boards
  31

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Motorola GM660 Service Information

Motorola GM660 Service Information (34 pages)

GM Series Professional Radio VHF (136-174MHz)

Brand: Motorola | Category: Radio | Size: 0.11 MB

Table of Contents

Motorola GM660 Service Information

Motorola GM660 Service Information (32 pages)

GM series Professional Radio UHF (403-470MHz)

Brand: Motorola | Category: Radio | Size: 0.24 MB

Table of Contents

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