Sony Vario-Tessar T* E 16-70mm f/4 ZA OSS Lens - Manual (Page 49)

49 GB Maintenance
 Do not rub the surface of the air filter with a brush.
This may cause dust to be pushed into the air filter
or damage the air filter.
 Do not use high-pressure air such as an air duster.
This may cause dust to be pushed into the air filter,
a problem due to the adhesion of contained
substances, or damage to the air filter.
6
Attach the air filter to the air filter cover so that
the pull stick protrudes outwards from the air
filter cover.
Attach so that there is no gap between the air
filter and air filter cover.
 When attaching the air filter to the air filter cover,
ensure that the pull stick side of the air filter is on
the opposite side of the air filter cover handle. Also,
ensure that the surface with the pull stick is facing
up.
 Securely attach the air filter to the air filter cover,
taking care not to hit the hook of the air filter cover.
If the air filter is attached to the air filter cover
incorrectly, this may cause a malfunction.
7
Attach the air filter cover to the projector.
Fully push it in so that there is no gap between
the air filter cover and the outer panel surface
of the projector.
In the following cases, replace the air filter with a
new one.
 When the message for cleaning the air filter is
displayed right after cleaning the air filter with a
vacuum cleaner.
 When the indicator flashes in red right after
cleaning the air filter with a vacuum cleaner.
Notes
Air filter cover handle
Pull stick
Replacing/Discarding the Air Filter