Useful Information58TroubleshootingGeneral useProblem Cause & solutionThe unit does not work. L Make sure that the battery is installed correctly (page10).L Check the connections (page 9).L Fully charge the battery (page 11).L Clean the charge contacts and charge again (page 11).L Unplug the base unit’s AC adaptor to reset the unit.Reconnect the adaptor and try again.L Re-install the battery (page 10) and fully charge it.The display shows“无法连接到座机” and analarm tone sounds.L The cordless handset has lost communication with thebase unit. Move closer to the base unit, and try again.L Confirm that the base unit’s AC adaptor is plugged in.L Raise the base unit antenna.L If the above remedies do not solve the problem, thecordless handset may have lost communication withthe base unit. Register the cordless handset again(page 55).I cannot hear a dial tone. L Confirm that the telephone line cord is connected(page 9).L Disconnect the unit from the telephone line and connecta known working telephone. If the working telephoneoperates properly, contact our service personnel tohave the unit repaired. If the working telephone doesnot operate properly, contact your telephone company.“ 服务区外 ” is displayed. L The cordless handset has not been registered to thebase unit. Register the cordless handset (page 55).L The cordless handset has lost communication with thebase unit. Move closer to the base unit, and try again.L Confirm that the base unit’s AC adaptor is plugged in.The base unit beepswhen I press any buttonor lift the handset.L The cordless handset is in use. Try again later.L You cannot join the call when the cordless handset is inspeakerphone mode or in conference mode.L You cannot make a conference call while you use thespeakerphone.ENG_TG2871CN.book 58 ページ 2006年5月1日 月曜日 午前11時33分