Panasonic PT-DZ870E Operating Instructions Manual page 163

Replacing the air filter
Attention
f Make sure to turn off the power before replacing the air filter.
f When attaching the air filter, make sure that the projector is stable, and perform the replacement in a safe place where the unit will not be
damaged even if you drop the air filter.
1) Remove the air filter.
f Refer to "Removing the air filter" (x page 159).
2) Replace the air filter to the new one and attach the air filter case to the projector.
f Refer to "Attaching the air filter" (x page 160).
Attention
f When switching on the projector, make sure that the air filter is attached. If it is not properly attached, the projector will suck in dirt and dust
causing a malfunction.
f If you use the projector without attaching the air filter case, the filter indicator <FILTER> flashes in red and the message appears on the
projection screen for approximately 30 seconds.
Chapter 5 Maintenance — Maintenance/replacement
ENGLISH - 163