Cleaning the dust filter

1Turn off the projector and unplug the power cable.

2Wait 60 minutes to allow the projector to cool thoroughly.

WARNING: To avoid burns, allow the projector to cool for at least 60 minutes before you clean or replace the dust filter.

3Remove the dust filter grill door on the side of the projector by pulling down on the two tabs at the grill’s top.

4Press the tab on the center of the dust filter and lift it off.

5Clean the filter using a vacuum set on low power.

6Replace the dust filter and the dust filter grill door.

7Reset the filter hour timer.

Troubleshooting

If the Temp and Lamp LEDs indicate a problem with the filter, check the fol- lowing:

Use a soft cloth to wipe the mirrors on the dust filter grill.

Remove the dust filter and use a soft cloth to wipe the window behind the dust filter.

Replace the dust filter and the dust filter grill.

Using the security lock

The projector has a security lock for use with a cable lock system. See the Accessories catalog that came with the projector, or visit our website, for ordering information. Refer to the information that came with the lock for instructions on how to use it.

turn off and unplug the projector

wait 60 minutes

remove dust filter

remove dust filter grill

security lock

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InFocus LP 850, LP 840 manual Cleaning the dust filter, Using the security lock, Troubleshooting