Sony CDX-GT420U - Manual (Page 19)

19
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, 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.
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.
No beep sound.
• The beep sound is canceled (page 13).
• 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 13).
The display disappears from/does not appear
in the display window.
• The dimmer is set “DIM-ON” (page 13).
• 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 17).
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.
Make sure the insulation film has been removed
(page 4).
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 15).
MP3/WMA/AAC files cannot be played back.
The disc is incompatible with the MP3/WMA/AAC
format and version (page 16).
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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