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Troubleshooting - Sony MEX-BT2500 Operating Instructions Manual

Bluetooth audio system.
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Mass: Approx. 1.2 kg (2 lb 11 oz)
Supplied accessory:
Card remote commander: RM-X304
Parts for installation and connections (1 set)
Your dealer may not handle some of the above listed
accessories. Please ask the dealer for detailed
MPEG Layer-3 audio coding technology and
patents licensed from Fraunhofer IIS and Thomson.
Design and specifications are subject to change
without notice.
• Halogenated flame retardants are not used in the
certain printed wiring boards.
• Halogenated flame retardants are not used in
• Paper is used for the packaging cushions.


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.
No power is being supplied to the unit.
Check the connection. If everything is in order, check
the fuse.
The power antenna (aerial) does not extend.
The power antenna (aerial) does not have a relay box.
No sound.
• The volume is too low.
• The ATT function is activated (page 9).
• The position of the fader control "FAD" is not set for
a 2-speaker system.
No beep sound.
The beep sound is canceled (page 15).
The contents of the memory have been erased.
• The RESET button has been pressed.
t Store again into the memory.
• The power supply lead or battery has been
• The power supply lead is not connected properly.
Stored stations and correct time are erased.
The fuse has blown.
Makes noise when the position of the ignition
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 "DIM-ON" (page 15).
• The display disappears if you press and hold (OFF).
t Press and hold (OFF) on the unit until the
display appears.
• The connectors are dirty (page 19).
The Auto Off function does not operate.
The unit is turned on. The Auto Off function activates
after turning off the unit.
t Turn off the unit.
The display disappears while the unit is
The Black Out function is set to on (page 15).
Card remote commander operation is not
• If the Black Out function is activated (no lighting),
card remote commander operation is not possible
(page 15).
• Make sure the insulation film has been removed
(page 5).
CD 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 17).
MP3/WMA files cannot be played back.
The disc is incompatible with the MP3/WMA format
and version (page 17).
MP3/WMA files take longer to play back than
The following discs take a longer time to start
– a disc recorded with a complicated tree structure.
– a disc recorded in Multi Session.
– a disc to which data can be added.
The display items do not scroll.
• For discs with very many characters, those may not
• "A.SCRL" is set to "OFF".
t Set "A.SCRL-ON" (page 15).
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 disc will not eject.
Press Z (eject) (page 9).
continue to next page t



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