Operating instructions

Fixing Problems
59
Fixing Problems
Telephone Maintenance
Always use a damp or antistatic cloth to clean the telephone. Never
use a dry cloth.
If the telephone is very dirty, clean it with a d iluted neutral cleaner
containing surfactants, such as a dish detergent. Afterwards remove all
traces of the cleaner with a damp cloth (using water only).
Never use cleaners containing alcohol, cleaners that corrode plastic, or
abra sive powders.
Troubleshooting
Pre ss ed key do es no t res po nd:
Check whether the key is stuck.
Telephone does not ring:
Check whether the "do not disturb" function was activated on your tele-
phone. On lifting the handset, you will hear a special dial tone. If so, deac-
tivate it Æ page 13.
You cannot dial an external numbe r:
Check whether you telephone is locked. On lifting the handset, you will
hear a special d ial tone. If so, unlock the telephone Æ page 29.
To correct any other problem:
First contact System Support. If System Support is unable to correct the
problem, contact Customer Service.