The Motorola GP3688 Portable Radio (Non-keypad - MOR) User Guide describes how to turn the radio on or off, adjust the volume, select a radio channel, receive and transmit, start or stop system scanning, start or stop auto scanning, delete a stray channel during a scan, and restore a channel to the scan list.
This manual covers safety and RF radiation guidelines, battery installation, charging methods, and accessory information for the GP3688 portable radio. It also explains the basic functions of the device, such as turning the radio on/off, adjusting volume, selecting channels, and using the PTT button.
Detailed sections describe scanning operations (system and automatic scans), how to delete and restore stray channels, programmable button functions, VOX (voice‑activated transmission) usage, and power level settings. The guide includes troubleshooting tips and reference tables for quick operation. This manual is written in Chinese.
Rotate the on/off/volume knob until you hear a self‑test tone and see the green LED indicator.
Turn the on/off/volume knob clockwise to increase volume, or turn it counter‑clockwise to decrease volume.
Press the pre‑programmed scan button to begin scanning; the green LED will flash during the operation.