Sony CDX-GT470U User Manual

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18
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.
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.
• The position of the fader control “FAD” is not set for 
a 2-speaker system.
No beep sound.
• The beep sound is canceled (page 11).
• An optional power amplifier is connected and you are 
not using the built-in amplifier.
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.
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 11).
The display disappears from/does not appear 
in the display window.
• The dimmer is set “DIM-ON” (page 11).
• 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 16).
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 
operating.
The Black Out function is set to on (page 11).
Card remote commander operation is not 
possible.
• If the Black Out function is activated (no lighting), 
card remote commander operation is not possible 
(page 11).
• Make sure the insulation film has been removed 
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 14).
MP3/WMA/AAC files cannot be played back.
The disc is incompatible with the MP3/WMA/AAC 
format and version (page 15).
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.