Siemens 500 economy User Manual

Page of 116
Fixing Problems
102
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 con-
taining 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 
abrasive powders.
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 tele-
phone (" Do not disturb" appears on the screen). If so, deactivate it 
You cannot dial an external number:
Check whether you telephone is locked ("US:Not authorized UK:Access de-
nied" appears on the screen). If so, unlock the telephone 
To correct any other problem:
First contact your service personnel. If your service personnel is unable to 
correct the problem, contact Customer Service.