Deutsche Telekom Octophon F400 - Manual (Page 94)

Fixing Problems
94
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 diluted neutral cleaner containing surfac-
tants, 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 abrasive pow-
ders.
Troubleshooting
Pressed key does not respond:
Check whether the key is stuck.
Telephone does not ring:
Check whether the do not disturb function was activated on your telephone (" Do not disturb"
appears on the screen). If so, deactivate it (
Æ page 19).
You cannot dial an external number:
Check whether you telephone is locked ("Access denied" appears on the screen). If so, un-
lock the telephone (
Æ page 48).
To correct any other problem:
First contact System Support. If System Support is unable to correct the problem, contact
Customer Service.