1 important, Safety, Hearing safety – Philips HSB2351/51 User Manual
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Warning
Never remove the casing of this unit.
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Never lubricate any part of this unit.
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Place this unit on a fl at, hard and stable surface.
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Never place this unit on other electrical equipment.
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Only use this unit indoors. Keep this unit away from
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water, moisture and liquid-fi lled objects.
Keep this unit away from direct sunlight, naked fl ames 
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or heat. 
Never look into the laser beam inside the unit.
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Hearing safety
Listen at a moderate volume.
Using headphones at a high volume can
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impair your hearing. This product can 
produce sounds in decibel ranges that may 
cause hearing loss for a normal person, 
even for exposure less than a minute. The 
higher decibel ranges are offered for those 
that may have already experienced some 
hearing loss.
Sound can be deceiving. Over time your 
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hearing ‘comfort level’ adapts to higher 
volumes of sound. So after prolonged 
listening, what sounds ‘normal’ can actually 
be loud and harmful to your hearing. To 
guard against this, set your volume to a safe 
level before your hearing adapts and leave 
it there.
To establish a safe volume level:
Set your volume control at a low setting.
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Slowly increase the sound until you can
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hear it comfortably and clearly, without 
distortion.
Listen for reasonable periods of time:
Prolonged exposure to sound, even at
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normally ‘safe’ levels, can also cause hearing 
loss.
Be sure to use your equipment reasonably 
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and take appropriate breaks.
Be sure to observe the following guidelines 
when using your headphones.
Listen at reasonable volumes for
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reasonable periods of time.
1 Important
Safety
Know these safety symbols
This ‘bolt of lightning’ indicates uninsulated 
material within your unit may cause an electrical 
shock. For the safety of everyone in your 
household, please do not remove product 
covering. 
The ‘exclamation point’ calls attention to 
features for which you should read the enclosed 
literature closely to prevent operating and 
maintenance problems. 
WARNING: To reduce the risk of fi re or electric 
shock, this apparatus should not be exposed to 
rain or moisture and objects fi lled with liquids, 
such as vases, should not be placed on this 
apparatus. 
CAUTION: To prevent electric shock, match 
wide blade of plug to wide slot, fully insert. 
Warning
Where the MAINS plug or an appliance coupler is used
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as the disconnect device, the disconnect device shall 
remain readily operable.
EN