An OSD advising "AIR FILTER CLEANING" is displayed

sounds like you have got air in the fuel system try bleeding the fuel system the cleaning exhaust message is saying that the particulate filter is blocked and needs cleaning/replacing it should explain in your handbook what to do

the filter will need to be cleaned and if the set still shuts down then I would suspect the fan may need to be cleaned and possibly replaced.

Procedure for resetting filter time.
Pressing the RESET button for about 3 seconds displays the FILTER TIME menu. Select the RESET using button to reset the timer. : RESET <- CANCEL Selecting the RESET resets the count of the lamp timer to 0. memo Perform this function only when you have cleaned or replaced the air filter. The filter timer counts the used time of the air filter after cleaning or replacement, to display the messages about the air filter. Incorrect performing causes incorrect operation of the messages. memo About caring for the air filter, please refer to the section "Air Filter".
Users manual located here. http://www.aboutprojectors.com/pdf/hitachi-cp-x1250-manual.pdf
Good info deserves a good thumbs up! Thank you!

THE AIR FILTERS ARE INSIDE THE ENGINE YOU MUST TAKE APART MANY PIECES LET A REPAIR CENTER DO THIS!!

This is stright from Panasonic.

The consumer is not able to change the air filter. It will have to be done by an
authorized Panasonic service center."

Hi,

just press the arrow keys up down and hold it for few sec till beep comes..(on ac scree not on remote)... this indicates cleaning of air filters..


If problem still persists, let me know.

Thanks.

Cleaning filter for the Panansonic PT-501LCX64.

I just had a T.V. tech do this. The filters are located on the two removable filters on the back side of the T.V. They look like the speaker units. He removed those two units, unplugged them & set them on the floor. He took some type of electronic cleaner with a cloth & wiped them down. The filters themselves are plastic. He explained that air flows through some tube connected to these plastic filters for cooling down below. He admitted they didn't look dirty--put everything back together & it is working fine now.

I imagine that dirty or not the timer is automatically set for every 400 hrs. of use to give you the prompt that the filter needs cleaning & will shut off in one minute so you can call a T.V. tech?

So to reset the timer--follow the other detailed prompts listed on this board & or use your owners manual & follow the prompts for replacing the bulb. That should take you somewhere to reset the timer--so you have another 400 hours of operation.

I believe it's with the T.V. turned off--hold down the down volume on your tv itself while holding the swap button on the remote control for 5-7 seconds---then follow the prompts. You should see a prompt for replacing a bulb & then one for filter cleaning. Then just reset the timer.

Hopefully this will help?

I had the same problem and the stupid tv would shut off after 1 minute. We opened the silver front panel , took the bulb out cleaned it, took the cover off the grey box to the right and very carefully vaccumed the filter and wiped it off with a microfiber cloth. It works great now!!! Make sure you unplug your tv before messing with it.

I have the same problem!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

air filter message is ussally generated by a tempsensor getting hot. could indicat falulty sensor.. is the fan running. a stalled fan could cause the problem but usaally when that happens it completley shuts down