2.5 TroubleshootingAppendix 2-11AppendixProblem Probable Cause Possible SolutionNothing is heard in thehandsfree mode.The unit does not ring.The display flashes thefollowing message.Set Time & DateThe “Headset” mode isselected.• An outside (CO) linenumber is not programmed.• The Ringer Volume is setto “OFF”.The system internal clock isnot working properly.When the headset is not used, set themode to “Handset”.Refer to “When Using the Headset” inProprietary Telephone Settings.• To program outside (CO) line numbers,refer to the Installation Manual.• Increase the Ringer Volume. Refer to“Volume Control” in ProprietaryTelephone Settings.Consult with an authorized PanasonicFactory Service Center.If a power failure occurs...Your system enables a conversation between a specific outside (CO) line and extension(Power Failure Transfer) and supports system data backup.Power Failure TransferA specific extension can be automatically connected to a specific outside (CO) line. Thisprovides outside (CO) line calls between the following extension and outside (CO) line.Outside (CO) line 1 is connected to extension jack 01.Outside (CO) line 4 is connected to extension jack 09.• All other conversations will be disconnected during a power failure.• Proprietary telephones (PT) cannot be used during a power failure. A single line telephonewill work in the event of a power failure. Connect the single line telephone to the abovejack.• When power is restored after a power failure, your system automatically restarts,maintaining as much of the previous system data as possible.Technical Manuals Online! - http://www.tech-man.com
