Volume Control (Headphones and Speakers)

Check your volume first to listen to music.

Check your

volume!!

Check if the volume is too loud before using headphones.

It is not recommended using headphones for long periods of time.

Use Time (Break Time)

Take a break for 10 minutes or more after a 50-minute period when working for more than one hour.

Illumination

Do not use the computer in dark locations. The illumination level for computer use must be as bright so for reading a book.

Indirect illumination is recommended. Use a curtain to prevent reflection on the LCD screen.

Operation Condition

Do not use the computer in hot and humid locations.

Use the computer within the allowed temperature and humidity range specified in the User Guide.

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Samsung R21, R25plus, R20 Volume Control Headphones and Speakers, Use Time Break Time, Illumination, Operation Condition