Useful Information42TroubleshootingIf you still have difficulties after following the instructions in this section, disconnectthe base unit’s AC adaptor, then reconnect the base unit’s AC adaptor. Remove thebatteries from the handset, and then insert the batteries into the handset again.General use*1 KX-TG4391/KX-TG4392/KX-TG4393/KX-TG4394Programmable settingsProblem Cause/solutionThe unit does not work. L Make sure the batteries are installed correctly(page 13).L Fully charge the batteries (page 14).L Check the connections (page 12).L Unplug the base unit’s AC adaptor to reset theunit. Reconnect the adaptor and try again.L The handset has not been registered to thebase unit. Register the handset (page 46).I cannot hear a dial tone. L The base unit’s AC adaptor or telephone linecord is not connected. Check the connections.L If you are using a splitter to connect the unit,remove the splitter and connect the unit to thewall socket directly. If the unit operatesproperly, check the splitter.L Disconnect the base unit from the telephoneline and connect the line to a known workingtelephone. If the working telephone operatesproperly, contact our service personnel tohave the unit repaired. If the workingtelephone does not operate properly, contactyour service provider/telephone company.The indicator on the handsetflashes slowly.L New messages have been recorded. Listen tothe new messages (page 32).*1L New voice mail messages have beenrecorded. Listen to the new voice mailmessages (page 36).Problem Cause/solutionWhile programming, thehandset starts to ring.L A call is being received. Answer the call andstart again after hanging up.