BenQ MP770 user manual Replacing the filter sponge, Check the Air Filter

6.Refit the filter case by aligning and inserting it into the projector slot.

7.Press the case back until it clicks into place.

8.Turn the projector back on.

If the case is not correctly seated in place, the projector will display an on-screen message as pictured to the right every three minutes.

The message will display 3 times for a 10-second duration each, if no further action is taken.

WARNING

Check the Air Filter

The air filter is not installed well. Please reinstall again.

OK

Then a second message as pictured to the right displays to warn of shutdown in 1 minute.

You can re-attach the case correctly anytime before the projector shuts down. That means you have 10- 11 minutes to get the re-attachment done from the time the first warning message was displayed. The projector will return to normal operation.

Power Off

The air filter is not installed well. Please reinstall again.

Otherwise, the projector will be turned off in 60 seconds.

Replacing the filter sponge

If you find the dirt is hard to remove from the filter sponge or the sponge is broken, replace it.

1.Carefully peel the filter sponge away from the filter case.

See that there are small plastic pins along the edges to position and retain the sponge into place. Lift the sponge up off these pins taking care to prevent them from breaking off.

2.Attach the supplied new filter sponge to the filter case.

Make sure that the tiny holes securely fit onto the case's pins.

Plastic pins

Maintenance 55