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182

7. Maintenance

3. Remove the four ﬁlters.

 Holdontotheltersttedtobothsidesofthelterunittoremovethelterunit.

4. Remove dust from the ﬁlter unit and the ﬁlter cover.

 Cleanbothoutsideandinside.

5. Attach 4 new ﬁlters to both sides of the ﬁlter unit.

 Theinstallationlocationsoftheltersaredifferentiatedbywhetherthereareanyslits(notches).Installthelter

undertheangearoundthelterunitasfollows.

(1)Attachthe2lterswithtransparentframesttedtothegripstothesideofthelterunitwheretheknobislo-

cated.

• Turnoverthesideofthelterwiththetransparentboxandtheninstallit.

(2)Attachthe2lterswiththeblacklinestothesideofthelterunitwherethereisnoknob.

• Turnoverthesideofthelterwiththeblackline,andtheninserttheslitsintotheprotrusionsonthelterunit

toinstallit.

6. Mount the ﬁlter unit back onto the projector cabinet.

 Insertthelterunitontotheprojectorwiththesidesonwhichtheleftandrighthooksarelocatedontheoutside.

7. Closetheltercover.

 Afterclosing,pushtheltercovernearthebuttonsuntila“click”soundisheard.Theltercoverwillbesecuredin

position.

Thiscompletesthelterreplacement.

Goontotheclearinglampandlterhourmeters.

Toclearthelampusagehoursandthelterusagehours:

1. Place the projector where you use it.

2. Plug the power cord into the wall outlet, and then turn on the projector.

3. Clearthelampusagehoursandthelterusagehours.

1. Fromthemenu,select[RESET]→[CLEARLAMPHOURS]andresetthelampusagehours.

2. Select[CLEARFILTERHOURS]andresetthelterusagehours.(→page132)

NEC PA721X User Manual

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