Panasonic KX-TD500 Installation Manual page 312

7.1 Troubleshooting
7-6 Troubleshooting
(B) If the system still does not operate properly,
1. Set the System Clear Switch to the "CLEAR" position.
2. Press the Reset Button with a pointed tool.
3. Return the System Clear Switch to the "NORMAL" posi-
tion while the Power Indicator is flashing (approximately
within 10 seconds).
(C) If the system still does not work, switch the power off and on
again after five minutes.
(D) If the system still does not work,
1. Switch the power off.
2. Set the System Clear Switch to the "CLEAR" position.
3. Switch the power on.
4. Press the Reset Button with a pointed tool.
5. Set the System Clear Switch to the "NORMAL" position
while the Power Indicator is flashing (approximately with-
in 10 seconds).
(E) If the system still does not work, switch the power off. If gel
cell batteries are connected to the system, disconnect them,
too. Then consult an authorized service person.
When the power supply stops, certain extensions are automati-
cally connected straight to specific CO lines.
This provides CO line conversations between the pre-assigned
extensions and CO lines.
• Connect single line telephones to the pre-assigned exten-
sion ports.