Sony CDX GT920U Operating Instructions - Page 24

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). DSO does not function. Depending on the type of car interior or type of music, DSO may not have a desirable effect. The images change automatically. In Auto Image mode, the selected image cannot be displayed. t To display selected image only, set to "Auto Image off" (page 16). Any display items do not display. t Set to "Info All" (page 16). Cannot adjust the volume level. The portable audio device was not connected when AUX was selected as (SOURCE). t Connect the portable audio device to the AUX input jack. CD/MD 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 19). 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. The display items do not scroll. • For discs with very many characters, those may not scroll. • "Auto Scroll" is set to off. t Set to "Auto Scroll on" (page 16) or press (SCRL) on the card remote commander. The sound skips. • Installation is not correct. t Install the unit at an angle of less than 45° in a sturdy part of the car. • Defective or dirty disc. The operation buttons do not function. The disc will not eject. Press the RESET button (page 4). 24 Radio reception The stations cannot be received. The sound is hampered by noises. • 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/AM antenna (aerial) in the rear/side glass). • Check the connection of the car antenna (aerial). • The auto antenna (aerial) will not go up. t Check the connection of the power antenna (aerial) control lead. • Check the frequency. • When the DSO mode is on, the sound is sometimes hampered by noises. t Set the DSO mode to "off" (page 15). Preset tuning is not possible. • Store the correct frequency in the memory. • The broadcast signal is too weak. Automatic tuning is not possible. • The local seek mode is set to "on." t Set to "Local off" (page 16). • The broadcast signal is too weak. t Perform manual tuning. During FM reception, the "ST" indication flashes. • Tune in the frequency accurately. • The broadcast signal is too weak. t Set to "Mono on" (page 16). An FM program broadcast in stereo is heard in monaural. The unit is in monaural reception mode. t Set to "Mono off" (page 16). USB playback You cannot play back items via a USB HUB. This unit cannot recognize USB devices via a USB HUB. Cannot play back items. A USB does not work. t Reconnect it. A beep sounds. During playback, the USB device has been disconnected. t Before disconnecting a USB device, make sure to stop playback first for data protection. The sound is intermittent. The sound may be intermittent at a high-bit-rate of more than 320 kbps. Error displays/Messages Blank Disc Tracks have not been recorded on the MD.*1 t Play an MD with recorded tracks. Checking The unit is confirming the connection of a USB device. t Wait until confirming the connection is finished.