Smart-technologies SMART BOARD 4000I User Manual download pdf (Page 60)

50 Maintaining and Troubleshooting the 4000i

The back of the interactive screen is well protected by the cabinet. However, if it must be

dusted, or if a mark has been made on its surface, dab it gently with a soft cloth that’s sprayed

with standard, alcohol-free glass cleaner. Do not apply the cleaner directly to the surface.

Cleaning the Projector

Before you clean the projector, make sure it’s powered down (page 48) and that the Lamp

Status LED isn’t flashing quickly. Then unplug either the projector or the cabinet. If you have to

remove the projector, follow the instructions entitled To remove the projector from the cabinet

on page 51.

Clean the projector casing with a soft, dry cloth. If it is heavily soiled, you can use a damp cloth

and a mild detergent, but don’t use strong detergent, wax or a chemical solvent, such as

alcohol, benzene or paint thinner. For additional cleaning information, read the Epson

PowerLite 9300i Multimedia Projector User’s Guide.

Because the projector lens sits in a horizontal position where dust will accumulate, you should

clean it often. To clean the lens, you must remove the cabinet’s side panel (see page 64).

Then use a blower or a canister of compressed air, being careful that you don’t scratch or mar

the lens. To remove dirt or smears on the lens, use lens paper. If this doesn’t remove the

marks, moisten a soft cloth with lens cleaner and gently wipe the lens surface.

The projector has air filters on the bottom. If dust builds up on these filters, it can hamper

ventilation, which may cause the projector to overheat. In this case, the projector won’t turn

on. To avoid this, clean these filters every three months (more often in dusty conditions) or

after every 100 hours of lamp use by vacuuming them as described in the Epson PowerLite

9300i Multimedia Projector User's Manual.

When you replace the projector lamp, you should also replace the air filters. To do this, you

must remove the projector.

CAUTION

Do not, under any circumstances, apply isopropyl alcohol, water or acetone to

the rear surface of the interactive screen. Any of these fluids could damage the

diffusion coating, resulting in a permanent deterioration in display quality.

CAUTION

You should let the projector lamp cool for at least three minutes before you

unplug the 4000i.

CAUTION

Don’t use glass cleaner on the projector’s lens. Also, avoid touching the lamp

glass because oils from your fingers may transfer to the lamp and cause it to

overheat.

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Smart-technologies SMART BOARD 4000I User Manual Page 60