TroubleshootingIf you still have difficulties after following the instructions in this section, disconnect the base unit’sAC adaptor and turn off the handset, then reconnect the base unit’s AC adaptor and turn on thehandset.General useProblem Cause/solutionThe handset does not turnon even after installingcharged batteries.R Place the handset on the base unit or charger to turn on thehandset.The unit does not work. R Make sure the batteries are installed correctly (page 9).R Fully charge the batteries (page 10).R Check the connections (page 9).R Unplug the base unit’s AC adaptor to reset the unit and turn offthe handset. Reconnect the adaptor, turn on the handset andtry again.R The handset has not been registered to the base unit. Registerthe handset (page 49).The handset display isblank.R The handset is not turned on. Turn the power on (page 13).I cannot hear a dial tone. R Make sure that you are using the supplied telephone line cord.Your old telephone line cord may have a different wiringconfiguration.R The base unit’s AC adaptor or telephone line cord is notconnected. Check the connections.R Disconnect the base unit from the telephone line and connectthe line to a known working telephone. If the workingtelephone operates properly, contact our service personnel tohave the unit repaired. If the working telephone does notoperate properly, contact your service provider/telephonecompany.I cannot use the SmartFunction Key even if theNR indicator is flashingslowly.R Another unit is in use. Wait and try again later.R The key lock feature is turned on. Turn it off (page 18).I cannot use the intercomor phonebook copyfeature.R These features are available between the handsets. Althoughthe handset displays “Intercom”, “Copy All”, or “Copy”,these features are not available for single handset models.The base unit beeps. R New messages have been recorded. Listen to the newmessages (page 35).46Useful InformationTG68xxBX_UE(en)_0523_ver021.pdf 46 2013/05/23 16:41:17