SANSUI U3 Portable FM Radio MP3 Walkman User Manual

1. Introduction

Thank you for purchasing the SANSUI U3 Portable FM Radio MP3 Walkman. This device is a versatile, compact audio player designed for various uses, including outdoor activities and daily listening. It combines multiple playback methods, including FM radio, Bluetooth connectivity, and playback from TF cards and USB drives. Please read this manual carefully to understand its features and ensure proper operation.

2. Key Features

• Multiple Playback Modes: Supports Bluetooth 5.3, FM Radio, TF card, and USB disk playback.
• Digital Song Selection: Easily select tracks in MP3 mode or frequencies in radio mode using the numeric keypad.
• One-Click Recording & Deletion: Record audio directly to a U disk or TF card and manage recordings.
• Hands-Free Calling: Answer and manage calls when connected via Bluetooth to a smartphone.
• Scheduled Shutdown: Set a timer for automatic power off (15, 30, 45, 60, 90, 120 minutes).
• High Fidelity Speaker: Full-frequency large voice coil speaker for clear and rich sound.
• Portable Design: Compact and lightweight, ideal for outdoor sports and travel.
• Colorful Light Effect: Integrated RGB lighting for an enhanced visual experience.
• Type-C Charging: Modern and convenient charging interface.
• Waterproof: Designed to withstand splashes and light rain.

3. Package Contents

Please check the box for the following items:

• SANSUI U3 Portable FM Radio MP3 Walkman
• USB Type-C Charging Cable
• User Manual
• Lanyard (attached to device)

Note: Additional accessories like TF cards or USB drives are not typically included and must be purchased separately.

4. Controls and Ports Overview

Familiarize yourself with the device's layout:

Image: Top view of the SANSUI U3 showing the numeric keypad and function buttons.

Image: Side view of the SANSUI U3 highlighting the various input ports.

4.1. Top Panel

• Numeric Keypad (0-9, *, M/O): For digital song selection, FM frequency input, and menu navigation.
• Recording Button: Long press to start/stop recording. Short press to play recordings.
• Delete Button: Delete selected files.
• Volume Down / Previous Track (V-/◀◀): Decrease volume or go to the previous track.
• Volume Up / Next Track (V+/▶▶): Increase volume or go to the next track.
• Play/Pause Button (▶▌▌): Play or pause audio playback.
• Power Button (Red Circle): Long press to power on/off. Short press to switch modes.
• Display Screen: Shows current mode, track number, frequency, and other information.

4.2. Side Ports

• USB Port: For USB disk playback.
• TF Card Slot: For TF (MicroSD) card playback.
• DC 5V (Type-C) Charging Port: For charging the device.
• AUX Input: For connecting external audio sources via a 3.5mm cable.
• Headphone Jack: For private listening with 3.5mm wired headphones.

5. Initial Setup

5.1. Charging the Device

1. Connect the provided Type-C charging cable to the DC 5V port on the speaker.
2. Plug the other end of the USB cable into a standard USB power adapter (5V/1A recommended) or a computer's USB port.
3. The charging indicator light will illuminate. The light will typically change or turn off once fully charged.

5.2. Power On/Off

• To Power On: Long press the red Power Button until the display lights up.
• To Power Off: Long press the red Power Button again until the display turns off.

6. Operating Instructions

6.1. Mode Switching

Short press the red Power Button to cycle through available modes: Bluetooth, FM Radio, TF Card, USB Disk, AUX.

6.2. Bluetooth Playback

Image: SANSUI U3 connected via Bluetooth to a smartphone.

1. Power on the speaker and switch to Bluetooth mode (the display will show 'BLUE' or a Bluetooth icon).
2. On your smartphone or other Bluetooth device, enable Bluetooth and search for available devices.
3. Select 'SANSUI U3' from the list to pair. A confirmation sound will indicate successful pairing.
4. You can now play audio from your connected device through the speaker.
5. Hands-Free Call: In Bluetooth mode, short press the Play/Pause button to answer an incoming call. Double-click to redial the last number. Long press to disconnect a call.

6.3. FM Radio Operation

1. Switch the speaker to FM Radio mode.
2. Automatic Scan: Long press the Play/Pause button to automatically scan and save available FM stations.
3. Manual Tuning: Use the numeric keypad to directly input a frequency (e.g., 102.5).
4. Change Stations: Use the Previous/Next Track buttons (◀◀/▶▶) to navigate through saved stations.

6.4. TF Card / USB Disk Playback

Image: Digital song selection feature using the numeric keypad.

1. Insert a TF card into the TF card slot or a USB disk into the USB port.
2. The speaker will automatically switch to the corresponding playback mode (TF or USB). If not, short press the Power Button to select the correct mode.
3. Digital Song Selection: In MP3 playback mode, use the numeric keypad to enter the track number you wish to play.
4. Use the Previous/Next Track buttons (◀◀/▶▶) to skip tracks.
5. Press the Play/Pause button (▶▌▌) to play or pause.

6.5. Recording Function

Image: Initiating a recording on the SANSUI U3.

1. Ensure a TF card or USB disk is inserted.
2. In music playback mode (TF/USB), long press the 'Recording' button to start recording.
3. Long press the 'Recording' button again to stop and save the recording.
4. Short press the 'Recording' button to play back the recorded files.
5. Use the 'Delete' button to remove unwanted recordings.

6.6. Scheduled Shutdown

Image: Setting the scheduled shutdown timer.

1. Long press the M/O button (often associated with mode/menu) to access the scheduled shutdown settings.
2. Use the numeric keypad or volume buttons to select the desired shutdown time: 15, 30, 45, 60, 90, or 120 minutes.
3. Confirm your selection. The device will automatically power off after the set time.

6.7. Volume Control

Use the V- and V+ buttons to adjust the volume level.

7. Specifications

8. Care and Maintenance

• Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in use for extended periods.
• Water Resistance: While waterproof, avoid submerging the device in water. Ensure all port covers are securely closed before exposure to moisture.
• Avoid Impact: Do not drop or subject the speaker to strong impacts, as this may damage internal components.

9. Troubleshooting

10. User Tips

• For best FM reception, try connecting the charging cable to the Type-C port, as it can sometimes act as an external antenna.
• When using the digital song selection feature, ensure your MP3 files are numbered sequentially for easier navigation.
• To maximize battery life during outdoor use, consider turning off the colorful light effect if not needed.

11. Warranty and Support

SANSUI products are manufactured to the highest quality standards. For any issues or questions regarding your SANSUI U3, please refer to your purchase documentation for warranty details or contact the seller/manufacturer's customer support. Keep your proof of purchase for warranty claims.