VIEWSONIC VX3211-2K-mhd 32" 16:9 IPS Monitor - Manual (Page 7)

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22. Refer all servicing to qualified service personnel. Service will be
required when the unit has been damaged in any way, such as:
if the power-supply cord or plug is damaged, if liquid is spilled
onto or objects fall into the unit, if the unit is exposed to rain or
moisture, or if the unit does not operate normally or has been
dropped.
23. Excessive sound pressure from ear-/headphones can cause
hearing damage /hearing loss.
24. Adjustment of the volume control as well as the equalizer may
increase the ear-/ headphones output voltage and therefore, the
sound volume level.
25. The factors influencing the ear-/headphones output other than
those specified by the manufacturer (e.g. operating system,
equalizer software, firmware, driver) may increase the ear-/
headphone output voltage and therefore, the sound volume
level.