NEC PA622U User Manual page 189

2. Remove the filter unit by pulling out the tab.
3. Remove the four filters.
Hold and remove the filters fitted to the two sides of the filter
unit.
4. Use a vacuum cleaner to vacuum all the dust inside.
Get rid of dust in the filter.
NOTE:
• Whenever you vacuum the filter, use the soft brush attachment to
vacuum. This is to avoid damage to the filter.
• Do not wash the filter with water. Doing so can result in filter clog-
ging.
5. Remove the dust on the front and back of the filter unit.
• Please also remove all dust from the filter cover of the pro-
jector.
Filter unit
175
7. Maintenance
Tab