Troubleshooting - NAD L 76 Owner's Manual

TROUBLESHOOTING

To determine any problem with your receiver, always check the most obvious possible causes first. If any problem still remains after your have checked the items below,
consult your nearest NAD dealer.
Problem
Amplifier
When listening to the music in stereo, left/right
speakers sounds reversed.
Low hum or buzzer sound.
Sound is only heard from one channel.
Sound cuts off during listening to the music or no
sound even though power is ON.
Low bass response.
Tuner
An unusual hissing noise is heard when listening to
the broadcast in stereo, but not heard when
listening monaurally.
Noise is excessive in both stereo and monaural
broadcasts.
Sound is distorted and/or the volume level becomes
low.
Excessive distortion in the sound of stereo
broadcasts.
Surround Effects - Important The center and rear speakers only operate when the unit is set on a Surround Sound mode and the source material being played is
recorded or broadcast in Dolby Digital, DTS or Dolby Pro Logic surround sound. Stereo broadcasts or recordings will produce some rear channel effects when played in a
surround mode. However, mono sources will not produce any sound from the rear speakers.
No sound from the rear speakers.
No sound from the center speaker.
Remote Control Unit
Remote control not working.
30
Probable Cause
Speakers are connected wrong.
Power line of a fluorescent light is installed near this
product.
One of the input cords is disconnected.
Connect the input cords securely.
Speaker impedance is less than prescribed for this
unit.
Speaker polarity (+/-) is reversed.
A slight noise may be heard because the method
used for modulation of FM stereo broadcasts is
different than that used for monaural broadcasts.
Poor location and / or direction of the antenna.
Transmitting station is too far away.
Broadcast signals are being disturbed.
Speaker system connections are not correct.
SURROUND MODE button is set to STEREO.
Source being played is not recorded or broadcast in
surround sound or stereo.
One or more rear speaker wires is not making good
contact.
SURROUND mode button is not set to DTS, DOLBY
DIGITAL, DOLBY PRO LOGIC II or DOLBY 3 STEREO.
The batteries are exhausted.
The remote control unit is too far from the receiver
or out of the effective range.
Remedy
After checking, if needed, reconnect.
Place this product as far away as possible from
electric devices with interference.
The BALANCE control is set to one side.
Adjust the BALANCE control.
After turning off the power and then turning it on
again, reduce the volume or change to the correct 8
ohm speakers.
Check all speakers for correct polarity.
Try reducing the treble sound by turning the treble
controls.
Try changing the location, height and/or direction of
the antenna.
Set the FM mode to monaural by pressing the FM
MUTE/MONO button. (Note that the broadcast will
then be heard as monaural sound).
If an indoor antenna is being used, change to an
outdoor antenna.
Try using an antenna with more elements.
Set the button to the desired surround mode
position.
Use surround or stereo source.
Check all rear speaker wires for good connection.
Set the button to DTS, DOLBY DIGITAL, DOLBY PRO
LOGIC II or DOLBY 3 STEREO.
Replace with new batteries.
Operate the remote control unit within the effective
range.