Sony CDX-R5715X Operating Instructions Manual page 17

No sound.
• The volume is too low.
• The ATT function is activated, or the Telephone ATT
function (when the interface cable of a car telephone
is connected to the ATT lead) is activated.
• The position of the fader control (FAD) is not set for
a 2-speaker system.
• The CD changer is incompatible with the disc format
(MP3/ATRAC CD).
t Play back with a Sony MP3 compatible CD
changer, or this unit.
No beep sound.
• The beep sound is canceled (page 11).
• An optional power amplifier is connected and you are
not using the built-in amplifier.
The contents of the memory have been erased.
• The RESET button has been pressed.
t Store again into the memory.
• The power connecting lead or battery has been
disconnected.
• The power connecting lead is not connected properly.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the position of the ignition
key is switched.
The leads are not matched correctly with the car's
accessory power connector.
The display disappears from/does not appear
in the display window.
• The dimmer is set to "Dimmer-on" (page 11).
• The display disappears if you press and hold (OFF).
t Press and hold (OFF) again until the display
appears.
• The connectors are dirty (page 15).
DSO does not function.
Depending on the type of car interior or type of music,
DSO may not have a desirable effect.
CD/MD playback
The disc cannot be loaded.
• Another disc is already loaded.
• The disc has been forcibly inserted upside down or in
the wrong way.
The disc does not playback.
• Defective or dirty disc.
• The CD-Rs/CD-RWs are not for audio use (page 14).
MP3 files cannot be played back.
The disc is incompatible with the MP3 format and
version (page 14).
MP3 files take longer to play back than others.
The following discs take a longer time to start
playback.
– a disc recorded with a complicated tree structure.
– a disc recorded in Multi Session.
– a disc to which data can be added.
The ATRAC CD cannot play.
• The disc is not created by authorized software, such
as SonicStage or SonicStage Simple Burner.
• Tracks that are not included in the group cannot be
played.
The display items do not scroll.
• For discs with very many characters, those may not
scroll.
• "A.Scroll" is set to off.
t Set to "A.Scroll-on" (page 11) or press (SCRL).
The sound skips.
• Installation is not correct.
t Install the unit at an angle of less than 45° in a
sturdy part of the car.
• Defective or dirty disc.
The operation buttons do not function.
The disc will not eject.
Press the RESET button (page 4).
"MS" or "MD" does not appear on the source
display when both the optional MGS-X1 and
MD changer are connected.
This unit recognizes MGS-X1 as an MD unit.
t Press (SOURCE) until "MS" or "MD" appears,
then press (MODE) repeatedly.
Radio reception
The stations cannot be received.
The sound is hampered by noises.
• Connect a power antenna control lead (blue) or
accessory power supply lead (red) to the power
supply lead of a car's antenna booster (only when
your car has built-in FM/AM antenna in the rear/side
glass).
• Check the connection of the car antenna.
• The auto antenna will not go up.
t Check the connection of the power antenna
control lead.
• Check the frequency.
• When the DSO mode is on, the sound is sometimes
hampered by noises.
t Set the DSO mode to "off" (page 7).
Preset tuning is not possible.
• Store the correct frequency in the memory.
• The broadcast signal is too weak.
Automatic tuning is not possible.
• The local seek mode is set to "on."
t Set to "Local-off" (page 11).
• The broadcast signal is too weak.
t Perform manual tuning.
During FM reception, the "ST" indication
flashes.
• Tune in the frequency accurately.
• The broadcast signal is too weak.
t Set to "Mono-on" (page 11).
An FM program broadcast in stereo is heard in
monaural.
The unit is in monaural reception mode.
t Set to "Mono-off" (page 11).
Interference occurs during FM reception.
IF mode is set to "Wide."
t Set to "IF Auto" (page 11).
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