Appendix
31
Troubleshooting
Power failure
The internal clock stops if there is a power failure in the telephone network. All set-
tings are retained however, meaning the settings stay as they were before when
power is restored. All you need to do is reset the clock. Please try first to narrow
down the cause of a problem and to rectify it using the following table.
Problem Possible cause Solution/recommendation
No display, no dial tone Connector cable not making
contact.
Check all cables and plug
connections.
Display too light or too dark. Contrast not set correctly. Adjust the contrast.
No incoming calls being
indicated in the telephone
system.
No call signal connected. Check the programming of the
telecommunication system.
Buzzing or other interference in
the loudspeaker or receiver.
Interference from cordless
telephone, cordless headset,
monitor, etc.
Change the location.
The clock shows the wrong
year but date and time are
right.
The date and time are sent by
the telephone network. The
year is not sent.
Set the year manually.
The time and date are incorrect
after a call.
The time and date are not
being sent correctly by your
telecommunication system.
Adjust the clock in your
telephone system.
The LED light is permanently
on.
Incorrect MWI switch setting. Move the MWI switch to SR.
Incorrect or no connection
when dialling from telephone
systems.
The outside line prefix for the
public telephone network has
not been entered.
Enter the outside line prefix.
No caller ID with incoming call. Your network provider or
telecommunication system
does not support this function
or the function is not enabled.
The caller has suppressed the
sending of the call number or
is ex-directory.
The call is from a telephone
network that does not support
the sending of call numbers.
Ask your network provider or
telecommunication system
manufacturer if the function is
available or if it needs to be
enabled.
To Next Page
Loading...
