Sony MPK-TRV3 ユーザーズマニュアル

The O-ring assures the waterproof function of the marine pack. To maintain waterproof
integrity, use it correctly. Incorrect handling may cause water to leak in.

Scratches or cracks on the O-ring may cause water to leak in. If the O-ring is damaged
in this way, replace it with a new one. Do not remove the O-ring from the groove with a
metal tool or a tool with a sharp point.

Make sure there is no dust, sand or hair on the O-ring, in the groove, or on the surface
of the marine pack where the O-ring touches. If there is, clean them completely, or the
O-ring and the surface of the marine pack may be damaged and water may leak in.

The grease protects the O-ring from wear.
Check that there are no cracks or dust on the O-ring, then grease it using your finger.
While greasing, double check that there are no cracks or dust.
Never use cloth or paper to apply grease because the fibers may cling.
Do not use any type of grease other then the supplied one, or it may damage the O-ring.
If you run out of silicone grease (2-115-921-01) you can purchase it from your nearest
Sony Service Center.

Scratches

Crack

O-ring