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Nec NP-PA550W Manual

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7. Maintenance
(2) Push the left edges of the filters and remove the two hard honeycomb filters (large and small).
 •The filters cannot be removed by pressing the left and right edges.
4. Remove dust from the filter unit and the filter cover.
Clean both outside and inside.
5. Attachfournewlterstothelterunit.
(1) Insert the hard honeycomb filters into the tips of the flanges at the center, then bend the filters and push them
in under the hooks.
- The filters cannot be inserted from the outside.
(2) Turn the filter unit over.
Mount the accordion filters under the flanges along the outer edges.
 •Eachaccordionlterhasslitsinit.Aligntheslitswiththeprotrusionsonthelterunit.
6. Mount the filter unit back onto the projector cabinet.
Insert the filter unit onto the projector with the sides on which the left and right hooks are located on the outside.
7. Mount the filter cover back onto the projector cabinet.
Insert the 4 catches on the top of the filter cover into the grooves in the projector, then press the left and right
buttons to close.
This completes the filter 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 filter usage hours. (→ page 117)
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