AppendixUser Manual 5536.1.4 TroubleshootingIf a power failure should occur...Your KX-TD500 System enables conversations between specific CO lines and extensions(Power Failure Transfer), and supports system data backup.Power Failure TransferSpecific extensions are automatically connected straight to specific CO lines. This providesCO line conversations between the pre-assigned extensions and CO lines:• All other conversations are disconnected during a power failure.• Digital Proprietary Telephones (DPTs) cannot be used during a power failure. SLTs canwork in the event of a power failure.• When power is restored after a power failure, your system automatically re-startsoperation, maintaining as much of the previous system data as possible.Problem Probable Cause Possible SolutionNothing is heard in the hands-free mode.The "Headset" mode isselected.When the headset is not used, setthe mode to "Handset."Refer to "Handset/HeadsetSelection" in StationProgramming (Section 2), or"DPT Overview" (Section 1).The unit does not ring. • The CO button is notassigned.• The Ringer Volume is setto "OFF."• Assign the CO button.• Increase the Ringer Volume.Refer to "DPT Overview"(Section 1).The display flashes thefollowing message:The system internal clockdoes not work properly.Consult with an authorizedPanasonic Factory ServiceCenter.THU JAN01 12:00A
