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Air-Filter Cleaning the Air Filter The air filter should be cleaned as described below at intervals of approximately 100 hours. When the filter is used for approximately 100 hours, the message "CLEAN THE AIR FILTER" appears when the projector is switched on. 1 Switch the projector power supply OFF, and remove the power cord from the power outlet. 2 Clean the air filter with a vacuum cleaner. 3 Reset the Filter Timer using the function of the FILTER TIME on the OPTION Menu. Please refer to the description of the "FILTER TIME" on the Table 9: MAIN Menu. Replacing the Air Filter Replace the air filter if contamination cannot be removed, or if it is damaged. To order a new air filter see page 26 for contact information. 1 Switch the projector power OFF, and remove the power cord from the power outlet. 2 Remove the filter cover and the filter. 3 Replace the new air-filter and the filter cover. 4 Reset the Filter Timer using the function of the FILTER TIME on the OPTION Menu. Refer to the description of the "FILTER TIME" on Table 9: MAIN Menu.
If you are facing the front of the lens, the filter is on the left side on the back. Pull it up and clean or replace. I use a can of air to clean. Replace in projector. You will need to clear the clean filer hours in the menu for the message to disappear.
All you need to do is use a vacuum hose to vacuum the dust that collects on the filter. The filter cover is on the side of the projector with horizontal slits. You can vacuum through the slits, or remove the cover and carefully vacuum the filter itself. Then go into the menu and reset the filter timer. Find this reset button in the "setup" menu item. Then your clean filter reminder won't show until another 100 hours of usage.
My VT440 says this when it gets to it's pre-defined service life. (a certain amount of hours)
As long as you pop the filters out regularly and clean them (I use a vacuum cleaner) you shouldn't need to replace them.
After that, go into the projector options (with the remote control) and reset the factory defaults... otherwise it has no idea that you have actually changed the darn thing and keeps complaining no matter what! =-]
you need to turn OFF the message function under the expert tab on the "on screen menu"
In the state of Power ON, press each key in the order of: HELP, UP, LEFT, HELP
Press the Menu Key to display the menu and confirm that Expert is displayed below the menu.
Once you go into Expert mode, go to the Expert2 tab in the onsreen menu and set the message to OFF.
Hope that helps.
This is a solution for the VT 480 by NEC for filter clean. on the left side there are two slots that have dust filters which can slide vertically to reveal micro screens that one can blow, tap vigorously, or vacuum to remove any dust build up. I hope this helps you with your unit.
Here is the info for you ::
Caring For The Air Filter
The air filter should be cleaned about every 100 hours. If the indicators or a message
prompts you to clean the air filter, clean the air filter as soon as possible.
If the soiling will not come off the air filter, or it becomes damaged, then it needs to be
replaced. Please replace the air filter as soon as possible.
memoWhen you replace the lamp, please replace also the air filter.
Turn off the projector, and unplug the power cord. Allow the lamp bulb to cool for at
least 45 minutes.
Apply a vacuum cleaner to the top of the filter cover and
the air filter to clean.
If the soiling will not come off the air filter, or it becomes
damaged, it needs to be replaced.
If the air filter needs to be replaced, contact your dealer
to prepare a new air filter. Tell the dealer your air filter
Turn on the projector power, and reset the filter timer.
(1) While the projector running, press the MENU button to
open the menu.
(2) Choose the ?OPTION? on the menu using the /
button, then press the button or ENTER button.
(3) Choose the ?FILTER TIME? using the / button, then
press and hold theRESET button for 3 seconds.
(4) Choose the ?RESET? using the button.
memo Incorrectly resetting of the filter timer (resetting
without replacement, or neglect of resetting after replacement) will result in
incorrect message functions.
Here is the link to the users manual ::
Further Questions ?? Email Me
Have a great evening.