XD-750/700/550/500 (En)5 6Preparation sectionBasic sectionApplication sectionKnowledge sectionsIn case of difficultyRemote control unitSymptom Cause RemedyRemote control operation is not possible.RemedyCauseSymptomReceiver, speakers÷ Connect properly referring to “System con-nection”.÷ Adjust to an required volume.÷ Switch MUTE OFF.÷ Unplug the headphone plug.÷ Turn the power OFF, remove the short-circuit and turn the power ON again.÷ Connect properly referring to “System con-nection”.÷ Adjust the present time again.÷ Adjust the present time again.÷ Adjust the present time referring to “Clockadjustment”.÷ Set the timer ON time and OFF time.÷ Execute the timer program with the SRS3D (SOURCE DIRECT)* key.÷ Connect antennas.÷ Select a band.÷ Tune to the frequency of the desired sta-tion.÷ Install the outdoor antenna in an apart posi-tion from the road.÷ Switch the suspected electric applianceOFF.÷ Install the TV or the system at an increaseddistance between them.Sound is not produced.The character display blinks and sound isnot produced.Sound is not produced from the left orright speakers.The clock display blinks without chang-ing the figures.Timer operation is not possible.Radio stations cannot be received.Noise interferes.÷ The speaker cords are disconnected.÷ The volume control is set to the minimumposition.÷ The MUTE switch of remote control unit isswitched ON.÷ The headphone plug is inserted into thejack.÷ The speaker cords are short-circuited.÷ The speaker cords are disconnected.÷ There was a power failure.÷ The power cord was unplugged from theoutlet.÷ The present time has not been adjusted orthere was a power failure.÷ The timer ON time and OFF time have notbeen set.÷ The timer execution was not set up.÷ The antennas have not been connected.÷ A proper broadcasting band has not beenselected.÷ The frequency of the station to be receivedis not tuned.÷ Car ignition noise.÷ Influence of an electric appliance.÷ A TV set is installed near the system.÷ Batteries are exhausted.÷ The remote control is too far away from thesystem, the controlling angle is deviated orthere is an obstacle in between.÷ There is no tape or CD set in the componentto be played.÷ An attempt is made to play the cassettedeck which is recording something.÷ Replace with new batteries.÷ Operate the unit inside the remote control-lable range.÷ Set a tape or CD in the component to beplayed.÷ Wait until the recording ends.$$6^&&66pppWE6¢¢9What seems to be a malfunction is not always so. Before calling for service, check the following table according to thesymptom of your trouble.Operation to resetThe microcomputer may fall into malfunction (impossibility tooperate, erroneous display, etc.) when the power cord is un-plugged while power is ON or due to an external factor. In thiscase, execute the following procedure to reset the microcom-puter and return it to normal condition.÷ Please note that resetting the microcomputer clears the contentsstored in and returns and to condition when it left the factory.Reset using a sharp-tipped object.RESET∞* The key inside ( ) is used only with the XD-550/XD-500.