User manual SONY MDR-CD780

[. . . ] Check that you have the following items: · This unit has two types of input jack: PHONES IN (A) and LINE IN (B). PHONES IN (A) is for input from a headphone jack and LINE IN (B) is for input from LINE OUT jack. Note If your audio/video equipment has a stereo mini jack (LINE OUT), connect the stereo mini jack (LINE OUT) to LINE IN (B) of the transmitter by using optional connecting cord RK-G136HG. Connecting the LINE OUT jack of your audio/ video equipment to PHONES IN (A) of the transmitter will cause low or muffled sound. [. . . ] When the indicator is not lit Check the connection to make sure that the contact pins are properly fitted into the contact holes on the headphones, or if the headphones are rested on the transmitter correctly. Since little electric current is used for charging, there is no need to worry about overcharging. * at 1 kHz, 1 mW+1 mW output ** the hours required to fully charge an empty battery Using the headphones with a commercially available R6 (size AA) dry battery Install the battery in the same manner as described in steps 1 through 3 of "Charging the headphones' battery. " When a R6 (size AA) dry battery is installed, the battery charge function is not activated. You cannot recharge other R6 (size AA) rechargeable battery (NC-AA etc. Check the remaining power of the headphones' battery Pull up the self adjusting band, and check that the headphones' power indicator lights in red. Charge the battery or install a new dry battery, if the power indicator light is weak or turned off and the sound becomes distorted or has a lot of noise. When the audio signal is input, the transmitter turns on automatically and the infrared emitters glow. If the transmitter is connected to the headphone jack, set the volume control of the audio source equipment as high as possible but not so high that the audio signal gets distorted. (Around level 5 or 6 on the volume control should be appropriate. During recharging, the transmitter is turned off automatically. Notes on headphones Preventing hearing damage Avoid using headphones at high volume. Hearing experts advise against continuous, loud and extended play. If you experience a ringing in your ears, reduce the volume or discontinue use. caring for others Keep the volume at a moderate level. This will allow you to hear outside sounds and to be considerate to the people around you. If you have any questions or problems concerning the system that are not covered in this manual, please consult the nearest Sony dealer. Be sure to bring the headphones and the transmitter to the Sony dealer when requiring repair work. Remove the old ear pad by pulling it off from the driver unit. Place the new ear pad around the driver unit as illustrated. / Turn on the transmitter first, then put on the headphones. (Around level 5 or 6 on the volume control should be appropriate. [. . . ] / Check that there is no object between the transmitter and the headphones. / Check that the infrared sensors are not covered with your hands or hair. The headphones are used by a window where the sunlight is too strong. N Draw the curtains/blind to shut out the direct sunlight, or use the headphones away from the sunlight. [. . . ]