PT-EZ570U, PT-EZ570E, PT-EZ570UL, PT-EZ570EL (serv.man2) - Panasonic Projector Service Manual (repair manual). Page 16

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The LAMP indicator will light yellow when the lamp runtime (Corresponding value) reaches 3,000 hours. This is to 
indicate that lamp replacement is required. The lamp runtime is calculated by using the below expression.
Lamp runtime (Corresponding value)  = 

normal + 

eco x 0.75

normal     

: used time in the Normal  and Auto mode

eco 

   

: used time in the Eco1 and Eco2 mode

You can check the lamp runtime following to the below procedure.

  Press and hold the 

 button on the projector or the POWER ON button on the remote control for more than 20 

seconds.

 The projector used time and lamp runtime will be displayed on the screen briefly as follows. 

 lamp runtime

Projector used time

Cumulative lamp 
operating time in 
each mode.

If the non-standard lamp is used, the warning and confirmation messages will appear on the screen every startup. 
Some of the functions are limited when the non-standard lamp is used in spite of the warning.

Since the lamp is not standard, projec-

tor failed to read lamp data.

Continue to use this lamp?

Yes

No