Cleaning
The anti-reflection coating on the front glass of your TD3200 should be cleaned with standard glass cleaner and a soft cloth. In order to remove fingerprints effectively it is usually better to wet the cloth with the cleaning solution and work on small sections of the glass at a time rather than starting to clean the whole surface at once.
The exterior of the TD3200 can be cleaned with a standard water-based cleaning solution and a cloth. The interior of the display box can be cleaned with the same materials.
BE CERTAIN TO TURN OFF THE POWER TO THE DISPLAY BOX WHEN CLEANING THE INTERIOR OF THE UNIT. APPLY THE CLEANING SOLUTION TO THE CLOTH. DO NOT SPRAY CLEANING SOLUTION INTO THE INTERIOR OF THE DISPLAY BOX.