Yamaha CDM-900 Stereo System User Manual


 
24
TROUBLESHOOTING
If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and
contact your authorized YAMAHA dealer or service center for help.
SYMPTOM
The player does not switch ON when
the STANDBY/ON switch or POWER
button is pressed.
This unit does not work normally.
Play does not begin.
Play is delayed, or begins at the
wrong place.
No sound.
Sound “skips.”
Sound “hums.”
Noise from a nearby tuner.
Noise from inside of the unit.
“TAKE OUT” appears in the display.
The remote control transmitter does
not work.
PROBABLE CAUSE
The power cord is not connected or not
completely connected.
Front panel is open.
There is an influence of strong external
noise (lightning, excessive static
electricity, etc.) or a misoperation was
performed while using this unit.
The disc is damaged.
There is moisture on the laser pickup.
The disc has been loaded backwards.
The disc is dirty.
The disc may be scratched or damaged.
Improper output cable connections.
Improper amplifier operation.
The player is being subjected to
vibrations or impacts.
The disc is dirty.
Improper cable connections.
The tuner is too close to the player.
The disc may be warped.
A disc is set in the slot of the disc being
played.
The unit fail to work properly due to
some external lighting or sound stimulus.
The batteries of the remote control
transmitter are too weak.
Direct sunlight or lighting (of an inverter
type of fluorescent lamp etc.) is striking
the remote control sensor of the main
unit.
Front panel is open.
REMEDY
Securely connect the power cord.
Close the front panel securely.
Turn the power off and disconnect the
AC power from the AC outlet. After about
30 seconds, connect the power and try
again.
Check the disc carefully; replace it if
necessary.
Wait 20 to 30 minutes after switching the
unit ON before trying to play a disc.
Reload the disc with the label side facing
right.
Clean the disc.
Check the disc carefully; replace it if
necessary.
Connect the cables properly. If the
problem persists, the cables may be
defective.
Set the amplifier controls to the correct
input selection.
Relocate the player.
Clean the disc.
Securely connect the audio cables. If the
problem persists, the cables may be
defective.
Move the tuner and player farther apart.
Replace the disc.
Remove the disc from the currently
playing disc’s slot.
Open and close the front panel while the
unit is turned on to reset the unit.
Replace the batteries with new ones.
Change the position of the main unit.
Close the front panel securely.