NAD C 525BEE Manuel D'installation page 8

Table des Matières

Publicité

Les langues disponibles
  • FR

Les langues disponibles

  • FRANÇAIS, page 10
ABOUT THE OPTICAL PICKUP
The Compact Disc player uses a solid-state semi-conductor diode laser,
mounted on a tracking servo-mechanism, to play the disc. The laser
illuminates the track of microscopic pits representing the digital data
bits, while photo-diodes detect the reflected illumination from the disc
and convert it into an electronic signal which is then decoded to recover
the musical waveform in each stereo channel.
You cannot see the laser operating, because it operates at wavelength
of 7800 Angstroms, which is in the infrared and thus invisible to the
human eye.
SYMPTOM
No Power when the POWER button is set to ON
Disc play does not start
No sound
Sound skips
Remote control does not work
A "humming" sound can be heard
8
The Compact Disc player is completely safe for children to use. The laser
operates at very low power and is concealed within the player
mechanism. Even when the player is disassembled, the laser remains
sealed within an optical system that causes its light to focus only 1
millimeter from the lens and then diverge rapidly, reducing its intensity
to negligible levels.
TROUBLESHOOTING
POSSIBLE CAUSE
Poor or no power plug connection at the AC
outlet
The disc is loaded upside down
The disc is too dirty
Incorrect audio cable connections
Incorrect amplifier/receiver operation
The CD player is subject to vibration or physical
shock from external sources
Batteries in Remote Control handset have
expired
Object obscuring remote sensor
on the player
Loose cable connections
SOLUTION
Insert the power plug firmly into the AC outlet.
Reload the disc with the label side UP
Clean the disc
Connect the CD player to the amplifier/receiver
correctly
Make sure that the input selector on your
amplifier or receiver is set to CD
Change the installation location
Replace batteries
Remove any objects directly in front of the player
Check the cable connections, particularly the
phono connecting cables

Publicité

Table des Matières
loading

Table des Matières