User guide

82
TroubleShooting
DT288
TroubleShooting
This section contains information on how to solve common
operational problems, and warnings you may receive.
Go through the following lists if you encounter any problems.
If this checklist does not solve the problem, contact your system
administrator. If others have similar problems, there may be a
system error.
Fault Probable Action or
cause comment
No display The battery is low Charge the
or the telephone battery
is defective
No ringing The Ringer off icon Off icon on=
is on or the tele- Turn on the
phone is defective ringing signal
Signal strength Out of coverage Enter coverage
icon off area or the system area or contact
or telephone the system
is defective administrator
Battery icon and The battery is Charge the
the warning lamp low battery
flashes slowly
Call icon is switched The telephone is Contact the system
off after 2 seconds defective administrator
Warning lamp Indicates a The display
flashes slowly warning informs
Warning lamp The telephone is Contact the system
steady light defective administrator