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Use the product only with the supplied power supply cord set. If you need to replace the power cord set, make sure that the new power cord meets the following requirements: detachable type, UL listed/CSA certified, type SPT-2, rated 7 A 125 V minimum, VDE approved or its equivalent, 4.6 meters (15 feet) maximum length.

Safe listening

Follow these instructions, suggested by hearing experts, to protect your hearing.

Gradually increase the volume until you can hear it clearly and comfortably and without distortion.

After setting the volume level, do not increase it after your ears adjust.

Limit the amount of time listening to music at high volume.

Avoid turning up the volume to block out noisy surroundings.

Turn the volume down if you can't hear people speaking near you.

Product servicing

Do not attempt to service this product yourself, as opening or removing covers may expose you to dangerous voltage points or other risks. Refer all servicing to qualified service personnel.

Unplug this product from the wall outlet and refer servicing to qualified service personnel when:

the power cord or plug is damaged, cut or frayed

liquid was spilled into the product

the product was exposed to rain or water

the product has been dropped or the case has been damaged

the product exhibits a distinct change in performance, indicating a need for service

the product does not operate normally after following the operating instructions

Note: Adjust only those controls that are covered by the operating instructions, since improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to normal condition.

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Acer R920 Series manual Safe listening, Product servicing