Sony XNV-L77BT Benutzerhandbuch

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 problems with the navigation function, refer to
the leaflet (supplied by TomTom) for the navigation
module.

If the problem is not solved, visit the following
support site.

General

No power is being supplied to the unit.

• Check the connection or fuse.
• If the unit is turned off and the display disappears, it

cannot be operated with the remote commander.

t Turn on the unit.

The power antenna (aerial) does not extend.

The power antenna (aerial) does not have a relay box.

No beep sound.

• The beep sound is canceled (page 56).
• 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 supply lead or battery has been

disconnected or it 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
on the monitor.

• The dimmer is set to “ON” (page 56).
• The display disappears if you press and hold

(SOURCE/OFF).

t Press (SOURCE/OFF) on the unit until the

display appears.

•

“M.OFF”

is touched and the Monitor Off function

is activated (page 14).

t Touch anywhere on the display to turn back on.

The display does not respond to your touch
correctly.

• Touch one part of the display at a time. If two or more

parts are touched simultaneously, the display will not
operate correctly.

• Adjust the touch point of the display (page 53).

Support site

http://support.sony-europe.com/

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.

Card remote commander operation is not
possible.

If the Monitor Off function is activated (no lighting),
card remote commander operation is not possible
(page 14).

The menu items cannot be selected.

Unavailable menu items are shown in grey.

AUX cannot be selected as the source.

All AUX input settings are set to “OFF.”

t Set “AUX1 Input”/“AUX2 Input” to “Video” or

“Audio” (page 64).

Radio reception

The stations cannot be received.
The sound is hampered by noises.

• The connection is not correct.

t Connect a power antenna (aerial) control lead

(blue) or accessory power supply lead (red) to the
power supply lead of a car’s antenna (aerial)
booster (only when your car has built-in FM/
MW/LW antenna (aerial) in the rear/side glass).

t Check the connection of the car antenna (aerial).
t 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.

• Setting of the local seek mode is not correct.

t Tuning stops too frequently:

Set “Local” to “ON” (page 20).

t Tuning does not stop at a station:

Set “Mono” to “ON” (page 20).

• The broadcast signal is too weak.

t Perform manual tuning.

During FM reception, the “Stereo” indication
flashes.

• Tune in the frequency accurately.
• The broadcast signal is too weak.

t Set “Mono” to “ON” (page 20).

An FM program broadcast in stereo is heard in
monaural.

The unit is in monaural reception mode.
t Set “Mono” to “OFF” (page 20).