-10-Maintenancen Resetting the filter counterAfter replacing the air filter units, be sure to reset the filtercounter.1) Press st to select [Filter counter reset].2) Press the button.[Filter counter Reset?] appears. Select Yes to con-tinue. Another confirmation dialog box appears, selectYes to reset the Filter counter.Attention• Turn off the power before you replace the air filter unit.• When attaching the air filter unit, make sure that theprojector is stable, and work in an environment that issafe, even in the event of the air filter unit dropping.• Do not operate the projector with the filters removed.Dust may accumulate on the optical elements degrad-ing picture quality.• Do not put anything into the air vents. Doing so mayresult in malfunction of the projector.• Do not wash the filters with water or any other liquidmatter. Otherwise the filters may be damaged.n Attaching the lens capWhen moving this projector or while not using it over an extended period of time, attach the lens cap.To prevent loss for the lens cap, please according to the following procedures, attach the lens cap with the string ofaccessories.Thread the thinner end of the string through1 1the hole on the lens cap.Thread the other end of the string through2 1the hole on the bottom of the projector.Lens capStringn Replacement of the air filter unit (back)1) Remove the air filter cover.• Open the air filter cover in the direction of the arrow inthe figure and remove it.2) Remove the air filter unit.• Hold the knob of the air filter unit and pull out inthe direction of the arrow.• After removing the air filter unit, remove largeforeign objects and dust from the air filtercompartment and the projector’s air intake portif there are any.3) Insert the new air filter unit.• Hold the air filter unit that the knob is outside ofthe projector, perform Step 2) in the reverse order.• Do not press the filter part when push into theprojector at last4) Install the air filter cover.• Make sure that the air filter cover is closed tightlyAir filter cover (back)Air filter unit (back)Knob