Samsung SyncMaster 400DXn Owner's Manual page 6

If the connector between the plug and the pin is dusty or dirty, clean
it properly using a dry cloth.
A dirty connector may cause electric shock or fire.
Make sure to unplug the power cord before cleaning the product.
Otherwise, this may cause electric shock or fire.
Unplug the power cord from the power outlet and wipe the product
using a soft, dry cloth.
Do not use any chemicals such as wax, benzene, alcohol, thinners,
insecticide, air freshener, lubricant or detergent.
Do not remove the cover (or back).
This may cause electric shock or fire.
Refer to a qualified servicing company.
If your LCD Display does not operate normally - in particular, if there
is any unusual sound or smell coming from the LCD Display -
unplug it immediately and contact
Service Center.
This may cause electric shock or fire.
Keep the product away from places exposed to oil, smoke or
moisture; do not install inside a vehicle.
This may cause a malfunction, electric shock or fire.
In particular, avoid operating the LCD Display near water or outdoors where
the LCD Display could be exposed to snow or rain.
If the LCD Display is dropped or the casing is damaged, turn the
LCD Display off and unplug the power cord. Then contact
Service Center.
The LCD Display may malfunction, causing electric shock or fire.
Disconnect the plug from the outlet during storms or lightning or if
it is not used for a long period of time.
Failure to do so may cause electric shock or fire.
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an authorized dealer or the
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