Sony cdx-gt920u Manual

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Your dealer may not handle some of the above 
listed accessories. Please ask the dealer for 
detailed information.
Note
This unit cannot be connected to a digital preamplifier 
or an equalizer which is Sony BUS system compatible.
Design and specifications are subject to change 
without notice.
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.
MPEG Layer-3 audio coding technology and 
patents licensed from Fraunhofer IIS and Thomson.
This product is protected by certain intellectual 
property rights of Microsoft Corporation. Use or 
distribution of such technology outside of this 
product is prohibited without a license from 
Microsoft or an authorized Microsoft subsidiary.
US and foreign patents licensed from Dolby 
Laboratories.
Content providers are using the digital rights 
management technology for Windows Media 
contained in this device (“WM-DRM”) to protect 
the integrity of their content (“Secure Content”) so 
that their intellectual property, including copyright, 
in such content is not misappropriated.
This device uses WM-DRM software to play 
Secure Content (“WM-DRM Software”). If the 
security of the WM-DRM Software in this device 
has been compromised, owners of Secure Content 
(“Secure Content Owners”) may request that 
Microsoft revoke the WM-DRM Software’s right 
to acquire new licenses to copy, display and/or 
play Secure Content. Revocation does not alter the 
WM-DRM Software’s ability to play unprotected 
content. A list of revoked WM-DRM Software is 
sent to your device whenever you download a 
license for Secure Content from the Internet or 
from a PC. Microsoft may, in conjunction with 
such license, also download revocation lists onto 
your device on behalf of Secure Content Owners.
•  Halogenated flame retardants are not used in the 
  certain printed wiring boards.
•  Halogenated flame retardants are not used in 
 cabinets.
•  Packaging cushions are made from paper.
General
No power is being supplied to the unit.
• Check the connection. If everything is in order, check 
the 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 sound.
• The volume is too low.
• The ATT function is activated, or the Telephone ATT 
function (when the interface cable of a car telephone 
is connected to the ATT lead) is activated.
• The position of the fader control “FAD” is not set for 
a 2-speaker system.
• The CD changer is incompatible with the disc (MP3/
WMA/AAC).
t Play back with a Sony MP3 compatible CD 
changer, or this unit.
No beep sound.
• The beep sound is canceled (page 16).
• 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.
• 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.
During playback or reception, demonstration 
mode starts.
If no operation is performed for 5 minutes with “Demo 
on” set, demonstration mode starts.
t Set “Demo off” (page 16).
The display disappears from/does not appear 
in the display window.
• The dimmer is set “Dimmer on” (page 16).
• The angle of the front panel is not proper.
t Adjust the angle of the front panel by pressing 
and hold (ANGLE) (page 5).
• 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 21).
continue to next page 
t