NEC NP-P401W User Manual page 176

(2) Push the left end of each filter and remove the hard two honeycomb filters (large and small).
• The large filter cannot be removed by pushing on its right end.
4. Remove dust from the filter unit and the filter cover.
Clean both outside and inside.
5. Attach four new filters to the filter unit.
(1)Insert the left end of each hard honeycomb filter (large and small) first and then the right end of each hard
honeycomb filter to the filter unit.
• The large filter cannot be fitted if its right end is inserted.
(2) Turn the filter unit over.
• Attach the two soft accordion filters (large and small). Each accordion filter has a slit on it. Align the slit with
each protrusion of the filter unit.
6. Put the filter unit back to the projector cabinet.
Make sure that the filter unit is placed in the correct orientation.
7. Put the filter cover back to the projector cabinet.
Insert two catches of the top side of the filter cover into the groove of the cabinet, and push the buttons on the left
and right to close the filter cover.
Push the filter cover until it clicks into place.
This completes the filter replacement.
Go on to the clearing lamp and filter hour meters.
To clear the lamp usage hours and the filter 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 filter 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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7. Maintenance