Denon ADV-M51 Operating Instructions Manual page 107

Symptom
Playback does not start when PLAY
button is pressed.
Playback stops immediately.
Menu playback of video CD's is not
possible.
Picture is disturbed during the search
operation.
Buttons do not operate.
No subtitles are displayed.
Audio (or subtitle) language does not
switch.
Angle does not switch.
Playback does not start when the title is
selected.
The password for rating level has been
forgotten.
Reset all the DVD setting to Factory
Preset.
The disc is not played with the audio or
subtitle language set as the default
setting.
Picture is not displayed in 4:3 (or 16:9).
Menu screen messages for the desired
language do not display.
Continuous noise is heard when receiving
FM programs
Hissing or continuous noise is heard when
receiving AM programs
Humming noise is heard when receiving
AM programs
LED does not light and no sound is
produced when power is turned on.
LED lights but no sound is produced.
LED flashes and no sound is produced.
Sound is distorted.
Oscillation (loud continuous sound
produced).
• Is there condensation on the disc or player ? (Let stand for 1 or 2 hours.)
• Discs other than DVDs, video CDs and music CDs cannot be played.
• Disc is dirty. Wipe off the dirt.
• Menu playback is not possible with anything but video CDs with playback control.
• Some disturbance is normal.
• Some operations are disabled for some discs.
• Subtitles are not displayed for DVDs not containing subtitles.
• Subtitles are turned off. Turn the subtitles setting on.
• The audio (or subtitle) language does not switch for discs which do not include multiple audio
(or subtitle) languages.
• For some discs the audio (or subtitle) language cannot be switched when the operation to
switch it is performed, but can be switched on the menu screens.
• The angle cannot be switched for DVDs which do not contain multiple angles. In some cases
multiple angles are only recorded for specific scenes.
• Check the "RATINGS SETUP" setting.
• While the player is in the stop mode, hold the FUNCTION button and the MENU/SET button
down simultaneously for longer than 3 seconds (until "INITIALIZE" disappears from the TV
monitor).
The lock will be released and the DVD all default settings and picture settings will return to the
default values.
• The disc does not play with the selected audio or subtitle language if that audio or subtitle
language is not included on that DVD.
• Set the "TV ASPECT" default setting to the proper setting for the connected TV.
• Check the default setting for the disc language's menu language.
• Antenna cable is not properly connected.
• This may be noise from a TV or interference
from a radio station.
• The radio waves transmitted over the
power cord are being modulated.
• Check the connection of the AC power plug.
• Connect securely.
• Turn the control and set it to the desired position.
• Set the power switch to the "OFF" position, wait at least 1 minute, then set the power switch
back to the "ON" position. If the problem persists, unplug the AC power cord from the AC
power outlet and contact your store of purchase.
• Turn the volume adjustment control counterclockwise to lower the volume.
• Do not amplify the bass sound on the amplifier. (Lower the amplifier's bass adjustment control
or volume.)
• Lower the volume of the active subwoofer or amplifier.
Check
• Connect the antenna cable properly.
• Connect an outdoor antenna.
• Turn off the TV.
• Change the position and direction of the AM
loop antenna.
• Unplug the power cord, flip the plug over in
the opposite direction, then plug the cord
back in.
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