Troubleshooting and Error MessagesDocument Version 2007-06 57TroubleshootingTroubleshootingProblem Possible Cause SolutionThe handset does notwork. The battery is drained. Charge the battery fully.(See “Charging the Battery” on page5.)The power is OFF. • Turn it ON.(See “Location of Controls” onpage 7.)• Re-insert the battery and tryagain. (See “Battery Installa-tion” on page 5.)The handset does notring.Ringer volume is set to “Off”. Adjust the ringer volume level.(See “Adjusting the Ringer Volume”on page 12.)You cannot make/receive a call.The handset is out of range, orthe CS is busy.Move closer to the CS or try againlater.The radio channel is busy, or aradio communication erroroccurred.Try again later.You cannot dial. The number that you dialed isrestricted by the PBX.Consult your dealer.Key lock mode is ON. To cancel the mode, press the Joy-stick for about 2 seconds.(See “Key Lock” on page 8.)The radio channel is busy or aradio communication erroroccurred.Try again later.The handset stopsworking during opera-tion.• Turn the handset off, then turn itback on.(See “Location of Controls” onpage 7.)• Re-insert the battery and tryagain.(See “Battery Installation” onpage 5.)You cannot use thehandset during apower failure.The handset will not function dur-ing a power failure because thePBX stops emitting radiowaves.The headset does notwork. A headset tone cannot be heardwhen receiving an incoming callwhen the headset is attached.• Make sure the headset tone set-ting is set to on. (See “IncomingOption” on page 49.)• Make sure the headset jack isconnected properly. (See “Loca-tion of Controls” on page 7.)The tone from theheadset cannot bechanged to a bell ormelody.The headset tone is a specifictone and is not related to theIncoming Option settings (RingerType).Noise is frequentlyheard.• Set the handset and CS awayfrom other electrical appliances.• Move closer to the CS.