HEC NCH20 Guide D'utilisation page 4

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Specifications
Speaker
Impedance
Sensitivity
Frequency Response
Active Noise Reduction
Maximum Power Handling 100mW
Weight
Using the Noise Cancelling Headphones:
1. Connect to the portable media player.
2. Wear the side marked R on your right ear and the one marked L on your left ear.
3. Turn the power on through the remote controller.
4. Turn on the power of the portable media player or AV equipment.
5. After listening to the music, turn off the power of the headphones.
Precautions
Do not use the headphones when use of the electronic equipment is prohibited.
Do not use headphones when driving and cycling.
To prevent hearing damage, avoid using headphones at high volume.
FIVE | CARE AND CLEANING
1. Clean your headphones with a damp (never wet) cloth. Solvents or detergents
should never be used.
2. Avoid leaving your headphones in direct sunlight or in hot, humid or dusty
places.
3. Keep your headphones away from heating appliances and sources of electrical
noise such as fluorescent lamps or motors.
SIX | TROUBLESHOOTING
Symptom
Power does not turn on
Power does not turn on
There is no sound
There is no sound
40mm Dynamic Driver
32 Ohm +/- 10%
106 dB +/- 3dB @ 1 kHz
20 Hz to 20 kHz
>12 dB @ 300 Hz
Approximately 180g (without battery)
Solution
Check that the battery is installed correctly
Install a fresh battery
Check the connection to the AV device is secure
Check that the AV device power is switched on