Motorola Gm3688 Service Manual Top < No Sign-up >

The Motorola GM3688 Go to product viewer dialog for this item.

6. Schematics (Top-Level Block Diagram)

[Antenna] → [Rx/Tx Switch] → [Preselector] → [LNA] → [Mixer] → [IF Filter] → [Demod] → [Audio Amp] → [Speaker]
                                                      ↑
[Microphone] → [Audio Preamp] → [VCO Modulation] → [PLL Synthesizer] ← [Reference Oscillator]
                                                      ↓
                                             [Driver PA] → [Final PA] → [LPF] → [Antenna]

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2. Service Tools Required

  1. Technical Specifications: Provides detailed technical specifications of the GM3688, including electrical, mechanical, and environmental characteristics.
  2. Installation and Configuration: Describes the procedures for installing and configuring the device, including antenna installation, cable connections, and programming.
  3. Troubleshooting: Offers a troubleshooting guide to help diagnose and repair common issues, including error codes and symptom-based troubleshooting.
  4. Maintenance and Repair: Provides detailed instructions for performing routine maintenance, such as cleaning and replacing parts, as well as repair procedures for faulty components.
  5. Alignment and Adjustments: Describes the procedures for aligning and adjusting the device, including frequency alignment and deviation adjustment.