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IMPORTANT NOTICE FOR SAFTY USE
Please read below information before use.
1. This product is not including power adaptor. It is shared the adaptor with
your mobile phone which specification should be INPUT: 100-240V-
50/60Hz OUTPUT : DC 5V, electricity should be 1000mA or above. The
adaptor to be used with this product should be regularly examined for
potential hazard, such as damage to the cable or cord, plug, enclosure of
other parts. In the event of such damage, this product must not be used
until the damage had been properly removed.
2. This product is including USB cable. If users choose other USB cables,
please check carefully if there's any damage on it. The mobile phone
original USB cable and adaptor are recommended to use with this product.
Inferior USB cable and adaptor will bring noise and other potential hazard
when you play this keyboard.
3. This product is not suitable for children under 3 years old.
4. Do not play the music aloud for a long time. Too loud music will hurt your
hearing.
5. Do not place this product in below locations; otherwise it may cause fire or
electric shock.
• Humid or dusty place
• Kitchen or place that have lamp black
• Near air conditioner, electric blanket, exposed under the sunlight or any
other place would warm this keyboard up.
6. Do not put this product near TV, Radio or beside other electronic product
which may cause audio or video receiving interference.
7. Unplug the adaptor before cleaning this product or when you are not using it
for a long time.
BIGFUN
MANUAL
ELECTRONIC KEYBOARD
ITEM NO.: BF-420

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Questions and answers

rem
January 30, 2025

how to know the letters in each keyboard

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1 comments:
Mr. Anderson
May 14, 2025

To identify the letters on the BIGFUN BF-420 keyboard, you can use piano keyboard stickers. These stickers are designed for 88/61/54/49/37 key keyboards and show large, bold letters and note labels to help beginners and kids learn the keys easily. They are removable and color-coded for easier recognition.

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Summary of Contents for BIGFUN BF-420

  • Page 1 BIGFUN MANUAL ELECTRONIC KEYBOARD ITEM NO.: BF-420 IMPORTANT NOTICE FOR SAFTY USE Please read below information before use. 1. This product is not including power adaptor. It is shared the adaptor with your mobile phone which specification should be INPUT: 100-240V- 50/60Hz OUTPUT :...
  • Page 2 Illustration 1. Power on/off 2. Tones 3. Volume + - 4. Drum combination / Animal sound 5. Stop 6. Demo A 7. Demo B 8. Record 9. Program 10. Play 11. Tempo 12. Rhythm 13. DC 5V Micro-USB port CHOICE OF POWER SUPPLY 1.
  • Page 3 press STOP button. 2. Volume Control Press + or – button to adjust the volume. 3. Tempo Control Press + or – button to adjust the tempo. 4. Tone The factory setting tone is piano. There’re totally 8 tones for you, just press T1 to T8 to choose.
  • Page 4 Common problems and solutions Problem Solution No sound after pressing Check the DC adaptor is correctly plugged in the power on/off or not. Check the USB cable is correctly or tightly plugged in by both ends. keyboard stops Check if the power supply is disconnected. during playing.

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