NEC NP-PA550W User Manual page 174

7. Maintenance
To replace the filters:
Four filters are packaged with the replacement lamp.
Honeycomb filter (coarse mesh): Large and small sizes (attached to the outside of the filter unit)
Accordion filter (fine mesh): Large and small sizes (attached to the inside of the filter unit)
NOTE:
• Replace all four filters at the same time.
• Before replacing the filters, wipe off dust and dirt from the projector cabinet.
• The projector is precision equipment. Keep out dust and dirt during filter replacement.
• Do not wash the filters with soap and water. Soap and water will damage the filter membrane.
• Put filters into place. Incorrect attachment of a filter may cause dust and dirt to get into the inside of the projector.
Before replacing the filters, replace the lamp. (→ page 159)
1. Push up the buttons on the left and right to release the filter unit and pull it out.
Filter cover
2. Remove the filter unit by pulling out the tab.
Filter unit
3. Remove the four filters.
(1) Turn the filter unit over and pull out the two soft accordion filters (large and small).
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