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(3) Set the flash mode to TTL AUTO or MANUAL. (For the camera setup in
these modes, refer to the instruction manual for the camera or flash.)
Q7 : How can I check for water leakage?
A7 : Here you should carry out the first check and the final system check with
the flash inside the case.
It is also recommended that you carry out the first check by diving to the
intended depth with the empty case. If this is not possible, this test
should be carried out at a depth of at least one meter or in a container of
water (e.g. a bath, bucket, etc.). The final system check can then be
carried out in a similar container of water.
Q8 : What are the causes for entry of water?
A8 : The main causes for the entry of water are shown below. Please check
them most carefully.
(1) Forgetting to install the O-ring
(2) The O-ring is partly or completely outside the groove.
(3) Damage, deterioration, or deformation of the O-ring
(4) Sand, fibers, hair or other foreign matter on the O-ring
(5) Sand, fibers, hair or other foreign matter on the O-ring groove or the O-
ring contact surface
(6) When the bag of silica gel is caught between the front and rear lids when
closing the case.
(7) Throwing the Case from a boat into the water, jumping with the Case into
the water, or other sudden application of strong forces onto the Case.
When entering the water, hand the Case over quietly or avoid impacts in
other ways.
Q9 : What are the important points for O-ring maintenance?
A9 : Please observe the following items.
(1) Never use alcohol, thinner, benzene or similar organic solvents or
chemical detergents to clean the O-ring. When such chemicals are used,
it is to be feared that the O-ring will be damaged or that its deterioration
will be accelerated.
(2) Use the original Olympus silicone O-ring grease (white cap). The grease
attached to Cases up to PT-008 (red cap) and the grease of other
companies are not suitable for this silicone O-ring, and use of such
grease may cause deterioration of the surface and impairment of the
waterproof function.
(3) In order to avoid deformation of the O-ring when the Case is not used for
a long time, remove the O-ring from the Case, apply a thin coat of the
special grease, and store the O-ring in a clean plastic bag. For reuse,
E-31
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