Troubleshooting - Ericsson Dialog 4223 Professional User Manual

Troubleshooting

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Troubleshooting
If your phone is out of order, you can initiate a telephone selftest to
check whether there is a fault in the phone or in the system. You
can also separately check the firmware revision state of your
phone.
To initiate a telephone selftest
Dialog 4223 Professional:
Press (see display).
PhoneSet
If
Press (see display).
Up
Press to frame
Press (see display).
The display shows the firmware revision state and
for a few seconds. If there is something wrong, a fault message
appears. Inform your system administrator about the fault
message.
All the key lamps on the phone and connected extra key panels
should be switched on during the selftest to indicate that each key
lamp is OK.
After a few seconds the display is checked (the display is
completely dark). The display is OK when there are no light dot(s) or
line(s). The light frame around the display is supposed to be there.
Exit
Press the most left display menu key to exit (see display).
(However the text is not visible when the display has turned black,
the exit feature is still on that menu key).
Note: If you do not press
finished after about 30 seconds.
more...
is not shown, press
Local Test Mode
Exit
Dialog 4223 Professional/Dialog 4225 Vision
until appearing.
(see display).
Selftest OK
, the selftest is automatically