Yamaha CDC-685 Owner's Manual page 26

TROUBLESHOOTING
If the unit fails to operate normally, check the following points to determine whether the problem can be corrected by the
simple measures suggested. If it cannot, or if the problem is not listed in the SYMPTOM column, disconnect the unit's power
cord and contact your authorized YAMAHA dealer or service center for help.
SYMPTOM PROBABLE CAUSE REMEDY
This unit does not switch ON when
The power cord is not connected or not
Securely connect the power cord.
the POWER switch is pressed. completely connected.
This unit does not work normally. There is an influence of strong external noise Turn off and disconnect the AC power from
(lightning, excessive static electricity, etc.) or the AC outlet. After about 30 seconds,
a misoperation was performed while using
connect the power and try again.
this unit.
The disc tray does not close A foreign object is obstructing the tray. Carefully check the disc tray and remove the
completely. foreign object.
A disc number does not light up The disc has been loaded upside down. Reload the disc with the label side up.
on the display.
The disc is damaged. Check the disc carefully; replace it if
necessary.
There is moisture on the laser pickup.
Wait 20 to 30 minutes after switching the unit
ON before trying to playa disc.
Play does not begin.
The disc is damaged.
Check the disc carefully; replace it if
necessary.
The disc has been loaded upside down. Reload the disc with the label side up.
The disc is dirty. Clean the disc.
Play is delayed, or begins at the The disc may be scratched or damaged. Check the disc carefully; replace it if
wrong place.
necessary.
No sound.
Improper output cable connections.
Connect the cables properly. If the problem
persists, the cables may be defective.
Improper amplifier operation. Set the amplifier controls to the correct input
selection.
Sound
"skips".
This unit is being subjected to vibrations or Relocate this unit.
impacts.
The disc is dirty. Clean the disc.
Sound
"hums".
Improper cable connections. Securely connect the audio cables. If the
problem persists, the cables may be defective.
Noise from a nearby tuner.
The tuner is too close to this unit. Move the tuner and this unit farther apart.
Noise from inside of the disc tray. The disc may be warped.
Replace the disc.
The remote control transmitter
The batteries of this remote control
Replace the batteries with new ones.
does not work. transmitter are too weak.
Direct sunlight or lighting (of an inverter type Change position of the main unit.
of fluorescent lamp, etc.) is striking the
remote control sensor of the main unit.
E-22
TROUBLESHOOTING
If the unit fails to operate normally, check the following points to determine whether the problem can be corrected by the
simple measures suggested. If it cannot, or if the problem is not listed in the SYMPTOM column, disconnect the unit's power
cord and contact your authorized YAMAHA dealer or service center for help.
SYMPTOM PROBABLE CAUSE REMEDY
This unit does not switch ON when
The power cord is not connected or not
Securely connect the power cord.
the POWER switch is pressed. completely connected.
This unit does not work normally. There is an influence of strong external noise Turn off and disconnect the AC power from
(lightning, excessive static electricity, etc.) or the AC outlet. After about 30 seconds,
a misoperation was performed while using
connect the power and try again.
this unit.
The disc tray does not close A foreign object is obstructing the tray. Carefully check the disc tray and remove the
completely. foreign object.
A disc number does not light up The disc has been loaded upside down. Reload the disc with the label side up.
on the display.
The disc is damaged. Check the disc carefully; replace it if
necessary.
There is moisture on the laser pickup.
Wait 20 to 30 minutes after switching the unit
ON before trying to playa disc.
Play does not begin.
The disc is damaged.
Check the disc carefully; replace it if
necessary.
The disc has been loaded upside down. Reload the disc with the label side up.
The disc is dirty. Clean the disc.
Play is delayed, or begins at the The disc may be scratched or damaged. Check the disc carefully; replace it if
wrong place.
necessary.
No sound.
Improper output cable connections.
Connect the cables properly. If the problem
persists, the cables may be defective.
Improper amplifier operation. Set the amplifier controls to the correct input
selection.
Sound
"skips".
This unit is being subjected to vibrations or Relocate this unit.
impacts.
The disc is dirty. Clean the disc.
Sound
"hums".
Improper cable connections. Securely connect the audio cables. If the
problem persists, the cables may be defective.
Noise from a nearby tuner.
The tuner is too close to this unit. Move the tuner and this unit farther apart.
Noise from inside of the disc tray. The disc may be warped.
Replace the disc.
The remote control transmitter
The batteries of this remote control
Replace the batteries with new ones.
does not work. transmitter are too weak.
Direct sunlight or lighting (of an inverter type Change position of the main unit.
of fluorescent lamp, etc.) is striking the
remote control sensor of the main unit.
E-22