Chapter 5 Maintenance — Maintenance/replacementENGLISH - 189ii) Pull out the air filter unit. (Fig. 3)f When pulling out, confirm that the air filter unit comes off from the tabs on the projector body (d).f After pulling out the air filter unit, remove large foreign objects and dust from the air filter unit compartmentand the air intake port of the projector body if there are any.Cleaning the air filter unitRemove the air filter unit beforehand with the previously described procedure in “Removing the air filter unit”(x page 188).Fig. 1 Fig. 21) Wash the air filter unit. (Fig. 1)i) Soak the air filter unit in cold or warm water and then lightly rinse it.f Do not use cleaning tools such as brushes.f When rinsing, hold the frame of the air filter unit without putting strong pressure on the filter unit.ii) Rinse the air filter unit two to three times using fresh water each time.f Insufficient rinsing may result in odors.2) Dry the air filter unit. (Fig. 2)f Let the air filter unit naturally dry off in a well-ventilated place where there is little dust and is not exposed todirect sunlight.f Do not dry using drying devices such as dryers.f After the air filter is dried, proceed to “Attaching the air filter unit” (x page 189).Attaching the air filter unitTabs on the projector body (d)Tabs on the projector body (c)Grip on the air filter unit (a)Groove on the projector bodyProtrusion of the air filter unitProtrusion of the air filter unitGroove on the projector bodyGrip on the air filter unit (b)1) Attach the air filter unit to the projector.f The air filter unit has no difference between top and bottom, but is two-sided. Match the protrusion positionof the air filter unit with the grooves on the projector body.f Hook the air filter unit frame at the air exhaust port side to the tabs on the projector body (d), and performStep 2) in “Removing the air filter unit” (x page 188) in the reverse order to attach.f Confirm that the tabs on the projector body (c) and (d) are hooked to the air filter unit frame.2) Attach the air filter cover to the projector and use a Phillips screwdriver to tighten the air filter coverscrew.f Attach the air filter cover by performing Step 1) in “Removing the air filter unit” (x page 188) in the reverseorder.