90
Troubleshooting
The screen displays AC
FAIL.
• The phone has been disconnected from AC
power. When AC power is restored, the screen
returns to the usual display, and one-touch
numbers will be retained but the redial numbers
will be erased.
Display screen is blank. • Make sure the power cord is connected to both
the phone and an electrical outlet not controlled
by a wall switch.
The call privacy feature
does not work.
• In some installations that have fiber optic service
(digital service to the building, analog service
within the building) the signals to the extensions
may not support the call privacy feature.
Error tone (fast busy sig-
nal) is heard when making
a page call.
• The Do Not Disturb feature is activated at the
extension you are calling.
A double beep sounds
every 30 seconds.
• There is a call on hold at this extension. Press
and release the LINE button of the call on hold
to return to the call and turn off the reminder
beep.
Operation during a power
failure.
• This phone operates during a power failure if
a working battery is installed. You will be able
to answer calls with the handset, and dial calls
using the dial pad keys and the one-touch or
redial features. No other features will work until
power is restored. All programming and voice
messages are retained during a power failure.
Cannot join a conversation
in progress.
• The call privacy feature prevents another set
on the system from interrupting a conversation.
Make sure you press the LINE button to release
privacy. (See the Call privacy section on the
user’s manual.)