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User Manual optiPoint 500 HP500-HP3000-HP5000 - Siemens ...

User Manual optiPoint 500 HP500-HP3000-HP5000 - Siemens ...

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Step by Step<br />

Fixing Problems<br />

Fixing Problems<br />

Telephone Maintenance<br />

• Always use a damp or antistatic cloth to clean the<br />

telephone. Never use a dry cloth.<br />

• If the telephone is very dirty, clean it with a diluted<br />

neutral cleaner containing surfactants, such as a<br />

dish detergent. Afterwards remove all traces of the<br />

cleaner with a damp cloth (using water only).<br />

• Never use cleaners containing alcohol, cleaners that<br />

corrode plastic, or abrasive powders.<br />

Troubleshooting<br />

Pressed key does not respond:<br />

Check whether the key is stuck.<br />

Telephone does not ring:<br />

Check whether the do not disturb function was activated<br />

on your telephone (" Do not disturb" appears on the<br />

screen). If so, deactivate it Page 73.<br />

You cannot dial an external number:<br />

Check whether you telephone is locked ("US:Not authorized<br />

UK:Access denied" appears on the screen). If so,<br />

unlock the telephone Page 77.<br />

To correct any other problem:<br />

First contact your service personnel. If your service personnel<br />

is unable to correct the problem, contact Customer<br />

Service.<br />

125

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