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Troubleshooting
Common Issues and Solutions
General Use
Issue
Possible Cause & Solution
Reference
The display is blank.
•
The unit is not receiving power.
→
The unit is not designed to function when there is a power
failure. Make sure that the device supplying PoE is
receiving power and that the Ethernet cable is properly
connected. If an AC adaptor is connected, confirm that the
AC adaptor is connected and receiving power.
Page 60
The display is not shown
well.
•
The display's contrast is too low.
→
Adjust the display's contrast.
Page 41
The unit is not performing
properly.
•
Cables or cords are not connected properly.
→
Check all connections.
Page 60
•
Your connection settings are incorrect.
→
Consult your administrator to confirm that your settings are
correct.
→
If the problem persists, consult your dealer.
Page 37
•
An error has occurred.
→
Restart the unit.
Page 71
is displayed on the
screen.
•
Registration to the SIP server has been lost.
→
Consult your administrator or dealer.
—
I cannot hear a dial tone.
•
Confirm that the LAN cable is properly connected.
Page 60
I cannot cancel the display
lock.
•
The PIN number you entered was incorrect.
→
Consult your administrator or dealer.
—
I forgot my PIN number.
•
Consult your administrator or dealer.
—
The date and time are not
correct.
•
Adjust the date and time of the unit.
Page 43
The Message/Ringer lamp
is lit.
•
You received a voice message while you were on the phone
or away from your desk.
→
Check the voice message.
Page 32
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Operating Instructions
Document Version 2011-09
Appendix