SANSUI F31 Multifunctional Digital FM Radio Wireless Bluetooth Speaker

Introduction

Thank you for choosing the SANSUI F31 Multifunctional Digital FM Radio Wireless Bluetooth Speaker. This device combines a portable Bluetooth speaker with an FM radio, MP3 player, and recording capabilities, designed for both indoor and outdoor use. Please read this manual carefully to ensure proper operation and to fully enjoy its features.

Figure 1: SANSUI F31 Speaker in available colors.

Setup

1. Unboxing and Package Contents

Carefully remove all items from the packaging. Ensure the following components are present:

• 1 x SANSUI F31 Speaker
• 1 x User Manual (this document)
• 1 x TYPE-C Interface Charging Cable
• 1 x Hanging Rope

2. Charging the Speaker

Before first use, fully charge the speaker. Connect the provided TYPE-C charging cable to the speaker's DC 5V port and the other end to a USB power adapter (not included) or a computer's USB port. The charging indicator will show the charging status. A full charge typically takes 3-4 hours.

Figure 2: Charging the SANSUI F31 speaker.

3. Initial Power On

Press and hold the power button (usually marked with a power symbol) on the speaker's control panel until the LED display lights up. The speaker will typically enter Bluetooth pairing mode or resume the last used mode.

Operating Instructions

Figure 3: Control panel overview.

1. Power On/Off

• Power On: Press and hold the Power button () for a few seconds.
• Power Off: Press and hold the Power button again for a few seconds.

2. Mode Selection

Press the 'M' button to cycle through available modes: Bluetooth, FM Radio, TF Card, USB, and AUX.

Figure 4: Available play modes.

3. Bluetooth Pairing

1. Turn on the speaker. It will automatically enter Bluetooth pairing mode (indicated by a flashing Bluetooth icon or voice prompt).
2. Enable Bluetooth on your smartphone or other device.
3. Search for available devices and select "SANSUI F31" from the list.
4. Once paired, the speaker will confirm with a sound or a steady Bluetooth indicator.

4. FM Radio Operation

1. Switch to FM Radio mode using the 'M' button.
2. Press the Play/Pause button to initiate an automatic station scan. The speaker will scan and save available FM stations.
3. Use the Previous/Next track buttons to navigate through the saved stations.
4. The LED display will show the current frequency. The speaker supports a frequency range of 70-108MHz, including campus broadcasting.

5. TF Card / USB Playback

1. Insert a TF card or USB flash drive (with MP3 audio files) into the respective slot.
2. The speaker will automatically switch to TF Card or USB mode and begin playing music. If not, select the mode using the 'M' button.
3. Use the Previous/Next track buttons to change songs.
4. The numeric keypad can be used for digital music selection and song ordering.

6. AUX Input

Connect an external audio device (e.g., MP3 player, computer) to the speaker's AUX port using a 3.5mm audio cable (not included). Switch to AUX mode using the 'M' button. The speaker will play audio from the connected device.

7. Recording Function

The SANSUI F31 supports one-key recording (internal and external recording) and one-click deletion.

1. Ensure a TF card or USB drive is inserted to save recordings.
2. In USB drive/TF card music playback mode, long press the Recording button () to start recording.
3. Press the Recording button again to stop and save the recording.
4. To delete a recording, long press the Deletion button ().

Figure 5: Recording and deletion buttons.

8. Hands-free Calling

When connected via Bluetooth to a smartphone, the built-in high-definition microphone allows for hands-free calls.

• Answer/End Call: Press the Call button (often integrated with Play/Pause or a dedicated phone icon).
• Reject Call: Long press the Call button.

Figure 6: Hands-free calling feature.

9. Volume Control

The speaker features dedicated volume control buttons. Look for buttons marked with '+' and '-' or similar symbols to adjust the volume up or down.

10. Headphone Mode

Connect headphones to the dedicated headphone jack for private listening. The speaker's output will be muted when headphones are connected.

11. Magic Colored Light

The speaker features a switchable magic colored light at the back. Use the dedicated light button (if present) or a combination of buttons to toggle or change the light effects.

Maintenance

1. Cleaning

• Wipe the speaker with a soft, dry cloth.
• Do not use abrasive cleaners, alcohol, or chemical solvents, as these may damage the surface.
• Keep the ports free of dust and debris.

2. Battery Care

• To prolong battery life, avoid fully discharging the battery frequently.
• Charge the speaker regularly, even if not in use, to prevent deep discharge.
• Store the speaker in a cool, dry place when not in use for extended periods.

Troubleshooting

Specifications

Figure 7: Product parameters.

Warranty and Support

This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for any warranty claims. For technical support or service inquiries, please contact the retailer or manufacturer's customer service department.

User Tips

• Volume Control: If you are having trouble adjusting the volume, look for dedicated '+' and '-' buttons on the control panel. These are typically separate from track navigation buttons.
• Portability: Utilize the flexible lanyard design for easy carrying during outdoor activities.
• Recording: Always ensure a TF card or USB drive is inserted before attempting to record, as the device needs storage for the audio files.

Product Overview Video