Radio Reception - Sony MEX-BT3100P Operating Instructions Manual

 An optional power amplifier is connected and
you are not using the built-in amplifier.
The contents of the memory have been
erased.
 The power supply lead or battery has been
disconnected or not connected properly.
 The unit is reset.
– Store again in the memory.
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.
During playback or reception,
demonstration mode starts.
 If no operation is performed for 5 minutes
with "DEMO-ON" set, demonstration mode
starts.
– Set "DEMO-OFF" (page 36).
The display disappears from/does not
appear in the display window.
 The dimmer is set to "DIM-ON" (page 36).
 The display disappears if you press and hold
.
– Press  on the unit until the
display appears.
 The connectors are dirty (page 41).
The Auto Off function does not operate.
 The unit is turned on. The Auto Off function
activates after turning off the unit.
– Turn off the unit.
The operation buttons do not function.
The disc will not eject.
 Press  and
more than 2 seconds.
The contents stored in memory are erased.
For your safety, do not perform the reset
operation while you are driving.

Radio reception

The stations cannot be received.
The sound is hampered by noises.
 The connection is not correct.
– Connect an REM OUT lead (blue/white
striped) or accessory power supply lead (red)
(BACK)/ for
to the power supply lead of a car's antenna
(aerial) booster (only when your car has
built-in radio antenna (aerial) in the rear/
side glass).
– Check the connection of the car antenna
(aerial).
– If the auto antenna (aerial) will not go up,
check the connection of the power antenna
(aerial) control lead.
Preset tuning is not possible.
 Store the correct frequency in the memory.
 The broadcast signal is too weak.
Automatic tuning is not possible.
 The broadcast signal is too weak.
– Perform manual tuning.
RDS
PTY displays "- - - - - - - -."
 The current station is not an RDS station.
 RDS data has not been received.
 The station does not specify the program type.
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 play back.
 Defective or dirty disc.
 The CD-Rs/CD-RWs are not for audio use
(page 39).
MP3/WMA/AAC files cannot be played back.
 The disc is incompatible with the MP3/WMA/
AAC format and version. For details on
playable discs and formats, visit the support
site.
MP3/WMA/AAC 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.
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