Appendix 5-135 AppendixProblem Probable Cause Possible SolutionNothing is heard in thehands-free 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 set to“OFF”.The system internal clock isnot working properly.When the headset is not used, set themode to “Handset”.Refer to “Initial Settings”(Section 1.1).• To program outside (CO) linenumbers, refer to the InstallationManual.• Increase the Ringer Volume. Referto “Initial Settings” (Section 1.1).Consult with an authorizedPanasonic Factory Servicenter.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 number 01.Outside (CO) line 4 is connected to extension jack number 09.• All other conversations will be disconnected during a power failure.• Proprietary telephones (PT) cannot be used during a power failure. A single linetelephone will work in the event of a power failure. Connect the single line telephoneto the above jack.• When power is restored after a power failure, your system automatically restarts,maintaining as much of the previous system data as possible.Troubleshooting
