TROUBLESHOOTINGPROBLEMExtension does not operate.Improper reset operationNoise in external pagingVolume distortion fromexternal music sourceSpeed dialing or One TouchDialing dose not function.A dial tone (short tonecontinuously) was heardand telephone line hung upat once when accessing anoutsi’de during thespeakerphone mode.PROBABLE CAUSEBad printed circuit board(LC-Card)Bad connection between thesystem and extensionA telephone with an A-Alrelay is connected.Bad extensionInduced noise on the wirebetween the System and theAmplifier.Excessive input level fromexternal music sourceBad programmingThe host PBX may havecaused the line to hang upwhen the KX-Tl23210 wasconnected to it.POSSIBLE SOLUTIONExchange printed circuit board for anotherprinted circuit board.Take that extension and plug it into the sameextension port using a short telephone cord.If telephone does not work, connection betweenthe system and the extension must be repaired.Use a 2 wires cord.Set the A-Al relay switch of the telephone to“OUT” or “OFF” position.Take that extension and plug it into anotherextension port that is working. If the telephonedoes not work, replace the phone.Press the Reset Button.Use a shielded cableas the connection wirebetween the System and Amplifier.A short shielded cable is recommended.Decrease the Output level of the external musicsource by using the Volume Control on the musicsource.Enter the line access code (9) or trunk groupaccess code (81 through 88) into programming.Use the handset instead of the speakerphone.