TROUBLESHOOTING
77144 Issue 8 August 2009 159
TROUBLESHOOTING
Problem Possible Cause Possible Solution
LCD not working Control unit power cable
from base unit not plugged
in correctly
Tu r n o f f m a i n s p owe r a n d
check the control unit
interconnections.
Mains fuse blown Replace the mains fuse in
the plug.
Mains power cable not
attached to base unit
correctly
Turn off mains power,
refit the mains cable
ensuring it is in the
correct position
Base unit power not
switched on
Check the On/Off switch
at the top of the base unit
is illuminated
LCD shows corrupted,
jumbled and unfamiliar
characters
Problem with the LCD Contact Domino for
service
Unable to recall
messages
Control unit memory has
been wiped
If necessary download
data from computer or re-
enter message information
from back-up notes
Problem with the keypad If the LCD is not lit then
contact Domino for
service
One or more keys not
responding on the
keypad
Non-usable key being
pressed in particular menu
Ensure the correct key is
being pressed, there are
keys that are not used in
certain functions or
menus
Problem with the keypad Contact Domino for
service
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