BenQ TH670s - Manual (Page 60)

Maintenance 60
Maintenance
Care of the projector
Your projector needs little maintenance. The only thing you need to do on a regular
basis is to keep the lens and case clean.
Never remove any parts of the projector except the lamp. Contact your dealer if other
parts need replacing.
Cleaning the lens
Clean the lens whenever you notice dirt or dust on the surface.
• Use a canister of compressed air to remove dust.
• If there is dirt or smears, use lens-cleaning paper or moisten a soft cloth with lens
cleaner and gently wipe the lens surface.
• Never use any type of abrasive pad, alkaline/acid cleaner, scouring powder, or
volatile solvent, such as alcohol, benzene, thinner or insecticide. Using such
materials or maintaining prolonged contact with rubber or vinyl materials may
result in damage to the projector surface and cabinet material.
Never rub the lens with abrasive materials.
Cleaning the projector case
Before you clean the case, turn the projector off using the proper shutdown
procedure as described in "Shutting down the projector" on page 45 and unplug the
power cord.
• To remove dirt or dust, wipe the case with a soft, lint-free cloth.
• To remove stubborn dirt or stains, moisten a soft cloth with water and a neutral
pH detergent. Then wipe the case.
Never use wax, alcohol, benzene, thinner or other chemical detergents. These can
damage the case.
Storing the projector
If you need to store the projector for an extended time, please follow the instructions
below:
• Make sure the temperature and humidity of the storage area are within the
recommended range for the projector. Please refer to "Specifications" on page 69
or consult your dealer about the range.
• Retract the adjuster feet.
• Remove the battery from the remote control.
• Pack the projector in its original packing or equivalent.
Transporting the projector
It is recommended that you ship the projector with its original packing or equivalent.