Sony MEX-M72BT Operating Instructions - Page 31

Troubleshooting, General, Radio reception, CD playback

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Troubleshooting The following checklist will help you remedy problems you may encounter with your unit. Before going through the checklist below, check the connection and operating procedures. For details on using the fuse and removing the unit from the dashboard, see "Connection/Installation" (page 39). If the problem is not solved, visit the support site on the back cover. General No power is being supplied to the unit.  If the unit is turned off and the display disappears, the unit cannot be operated with the remote commander. - Turn on the unit. No sound or the sound is very low.  The position of the fader control [FADER] is not set for a 2-speaker system.  The volume of the unit and/or connected device is very low. - Increase the volume of the unit and connected device. No beep sound.  An optional power amplifier is connected and you are not using the built-in amplifier. Stored stations and correct time are erased. The fuse has blown. Makes a noise when the position of the ignition is switched.  The leads are not matched correctly with the boat's accessory power connector. During playback or reception, the demonstration mode starts.  If no operation is performed for 5 minutes with [DEMO-ON] set, the demonstration mode starts. - Set [DEMO-OFF] (page 23). The display disappears from/does not appear in the display window.  The connectors are dirty (page 28). The display/illumination flashes.  The power supply is not sufficient. - Check that the boat battery supplies enough power to the unit. (The power requirement is 12 V DC.) The operation buttons do not function. The disc will not eject.  The connection is not correct. - Press DSPL and CALL for more than 2 seconds to reset the unit. The contents stored in memory are erased. The clock set automatically is not accurate.  The clock data on radio waves is not accurate. - Set the clock manually (page 10). Radio reception The radio reception is poor. Static noise occurs.  Connect the antenna (aerial) firmly. The stations cannot be received.  The tuning step setting has been erased. - Set the tuning step again (page 10). RDS PTY displays The current station is not an RDS station, or the radio reception is poor. CD playback The disc does not play.  Defective or dirty disc.  The CD-R/CD-RW is not for audio use (page 27). MP3/WMA/AAC files cannot be played.  The disc is incompatible with the MP3/ WMA/AAC format and version. For details on playable discs and formats, visit the support site on the back cover. 31GB

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31
GB
Troubleshooting
The following checklist will help you remedy
problems you may encounter with your unit.
Before going through the checklist below,
check the connection and operating
procedures.
For details on using the fuse and removing
the unit from the dashboard, see
“Connection/Installation” (page 39).
If the problem is not solved, visit the support
site on the back cover.
General
No power is being supplied to the unit.
If the unit is turned off and the display
disappears, the unit cannot be operated
with the remote commander.
– Turn on the unit.
No sound or the sound is very low.
The position of the fader control [FADER]
is not set for a 2-speaker system.
The volume of the unit and/or connected
device is very low.
– Increase the volume of the unit and
connected device.
No beep sound.
An optional power amplifier is connected
and you are not using the built-in
amplifier.
Stored stations and correct time are
erased.
The fuse has blown.
Makes a noise when the position of the
ignition is switched.
The leads are not matched correctly with
the boat’s accessory power connector.
During playback or reception, the
demonstration mode starts.
If no operation is performed for 5 minutes
with [DEMO-ON] set, the demonstration
mode starts.
– Set [DEMO-OFF] (page 23).
The display disappears from/does not
appear in the display window.
The connectors are dirty (page 28).
The display/illumination flashes.
The power supply is not sufficient.
– Check that the boat battery supplies
enough power to the unit. (The power
requirement is 12 V DC.)
The operation buttons do not function.
The disc will not eject.
The connection is not correct.
– Press DSPL and CALL for more than
2 seconds to reset the unit.
The contents stored in memory are
erased.
The clock set automatically is not accurate.
The clock data on radio waves is not
accurate.
– Set the clock manually (page 10).
Radio reception
The radio reception is poor.
Static noise occurs.
Connect the antenna (aerial) firmly.
The stations cannot be received.
The tuning step setting has been erased.
– Set the tuning step again (page 10).
RDS
PTY displays [- - - - - - - -].
The current station is not an RDS station,
or the radio reception is poor.
CD playback
The disc does not play.
Defective or dirty disc.
The CD-R/CD-RW is not for audio use
(page 27).
MP3/WMA/AAC files cannot be played.
The disc is incompatible with the MP3/
WMA/AAC format and version. For details
on playable discs and formats, visit the
support site on the back cover.