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Appendix
274 User Manual
6.1.4 Troubleshooting
If a power failure should occur...
Your System enables conversations between specific outside lines and extensions (Power
Failure Transfer), and supports system data backup.
Power Failure Transfer
Specific extensions are automatically connected straight to specific outside lines. This provides
outside line conversations between the pre-assigned extensions and outside lines:
Outside line 01 is connected to extension jack number 01.
Outside line 03 is connected to extension jack number 09.
Outside line 09 is connected to extension jack number 17.
• All other conversations are disconnected during a power failure.
• Proprietary telephones (PTs) cannot be used during a power failure. SLTs can work in
the event of a power failure.
• When power is restored after a power failure, your system automatically restarts
operation, maintaining as much of the previous system data as possible.
Problem Probable Cause Possible Solution
Nothing is heard in the hands-
free mode.
The "Headset" mode is
selected.
When the headset is not used, set
the mode to "Handset".
Refer to "1.1.4 Initial
Settings".
The unit does not ring. • The outside number is not
programmed.
• The Ringer Volume is set
to "OFF".
• For programming outside
numbers, refer to the
Installation Manual.
• Increase the Ringer Volume.
Refer to "1.1.4 Initial
Settings".
The display flashes the
following message:
The system internal clock
does not work properly.
Consult with an authorized
Panasonic Factory Service
Center.
Set Time & Date
THU JAN01 12:00A