Troubleshooting - Sony MEX-N4200BT Operating Instructions Manual

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 34).
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.
The contents of the memory have been
erased.
 The power supply lead or battery has
been disconnected or not connected
properly.
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 car's accessory power connector.
28
GB
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 20).
The display disappears from/does not
appear in the display window.
 The dimmer is set to [DIM-ON] (page 22).
 The display disappears if you press and
hold OFF.
– Press OFF on the unit until the display
appears.
 The connectors are dirty (page 25).
The display/illumination flashes.
 The power supply is not sufficient.
– Check that the car 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.
 Press DSPL and
than 2 seconds to reset the unit.
The contents stored in memory are
erased.
For your safety, do not reset the unit while
you are driving.
Radio reception
Stations cannot be received.
The sound is hampered by noises.
 The connection is not correct.
– If your car has built-in radio antenna
(aerial) in the rear/side glass, connect an
REM OUT lead (blue/white striped) or
accessory power supply lead (red) to the
power supply lead of a car's antenna
(aerial) booster.
– Check the connection of the car antenna
(aerial).
– If the auto antenna (aerial) will not
extend, check the connection of the
power antenna (aerial) control lead.
Preset tuning is not possible.
 The broadcast signal is too weak.
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