Panasonic KX-TD500 - Troubleshooting

Appendix
User Manual 553
6.1.4 Troubleshooting
If 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 Transfer
Specific extensions are automatically connected straight to specific CO lines. This provides
CO 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 can
work in the event of a power failure.
• When power is restored after a power failure, your system automatically re-starts
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 "Handset/Headset
Selection" in Station
Programming (Section 2), or
"DPT Overview" (Section 1).
The unit does not ring. • The CO button is not
assigned.
• The Ringer Volume is set
to "OFF."
• Assign the CO button.
• Increase the Ringer Volume.
Refer to "DPT Overview"
(Section 1).
The display flashes the
following message:
The system internal clock
does not work properly.
Consult with an authorized
Panasonic Factory Service
Center.
THU JAN01 12:00A