Samsung SyncMaster XL30 Owner's Manual page 6

a slightly moistened, soft fabric.
Do not spray water or detergent directly onto the monitor.
Use the recommended detergent with a smooth cloth.
If the connector between the plug and the pin is dusty or dirty, clean it
properly using a dry cloth.
Make sure to unplug the power cord before cleaning the product.
Unplug the power cord from the power outlet and wipe the product
using a soft, dry cloth.
Others
Do not remove the cover (or back).
If your monitor does not operate normally - in particular, if there is any
unusual sound or smell coming from the monitor - unplug it immediately
and contact an authorized dealer or the
Keep the product away from places exposed to oil, smoke or moisture;
This may cause damage, electric shock or fire.
A dirty connector may cause electric shock or fire.
Otherwise, this may cause electric shock or fire.
Do not use any chemicals such as wax, benzene, alcohol, thinners,
insecticide, air freshener, lubricant or detergent.
This may cause electric shock or fire.
Refer to a qualified servicing company.
This may cause electric shock or fire.
Service Center.