NEC M230X User Manual page 128

5. Remove dust from the filter unit and the filter cover.
Clean both outside and inside.
6. Attach the four 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 installed if its right end is inserted
first.
(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 pro-
trusion of the filter unit.
7. Put the filter unit back to the projector cabinet.
Make sure that the filter unit is placed in the correct orienta-
tion.
8. 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.
9. Clear the filter usage hours.
Plug the power cord into the wall outlet, and then turn on the
projector.
From the menu, select [RESET] → [CLEAR FILTER HOURS].
(→ page 97)
The interval time to clean the filters is set to [OFF] at time of
shipment. When using the projector as it is, you do not clear
the filter usage
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7. Maintenance