VDO TR7311U-OR Owner's Manual - page 9
4
TROUBLESHOOTING
Problem
Possiblecause
Solution
General
T h e u n i t w i l l n o t
switchon.
Carignitionisnoton.
Cableisnotproperlyconnected.
Fuseisburnt.
Turnyourcarkeyintheignition.
Checkcableconnection.
Replacefusewithanewfuseofthesamecapacity.
Nosound
Volumeissetatminimumorthemute
functionison.
Checkthevolumeorswitchthemutefunctionoff.
The unit or screen
d o e s n o t w o r k
normally.
Theunitsystemisunstable.
PresstheRESETbutton.
ModeTUNER
Unable to receive
stations.
Theantennaisnotconnectedproperly.
Connecttheantennaproperly.
Poorqualityreception
ofradiostation.
Theantennaisnotfullyextendedoritis
broken.
Fullyextendtheantennaandifbroken,replaceitwitha
newone.
Preset stations are
lost.
Thebatterycableisnotproperlyconnected.
Connectthepermanentliveontheunittothepermanent
liveonthevehicle.
ModeUSB
UnabletoinsertUSB
device
TheUSBdevicehasbeen
insertedthewrongwayround.
Insertittheotherwayaround.
T h e U S B d e v i c e
cannotberead.
NTFSformatisnotsupported.
CheckthatthefilesystemisinFATorFAT32format.Due
todifferentformats,somemodelsofstoragedevicesor
MP3playersmaynotberead.
Thefollowingchecklistcanhelpyousolvesomeproblemswhichyoumayencounterwhenusingtheunit.Beforeconsultingit,checktheconnections
andfollowtheinstructionsintheusermanual.Donotusetheunitinabnormalcondition,forexamplewithoutsound,orwithsmokeorfoulsmellcan
causefireorelectricshock,immediatelystopusingitandcallthestorewhereyou
purchasedit.