Sea & Sea MDX-GRD IV User manual

UNDERWATER HOUSING for
RICOH GR DIGITAL IV
MDX-GRD IV
日本語 English
取扱説明書
Instruction Manual
06161

E-1
Contents
Safety Precautions ......................................................................... E-2
Precautions on Handling the O-ring ............................................... E-4
Identification of Parts ..................................................................... E-6
Preparation for Setting Up ............................................................. E-7
Prepare the housing and port ................................................... E-7
Prepare the digital camera ....................................................... E-7
Prepare the connecting accessories ........................................ E-7
Opening and Closing the Housing ................................................. E-8
Mounting the Camera in the Housing .......................................... E-10
Connecting the Strobe ................................................................. E-12
Use the Camera’s built-in flash .................................................... E-13
External Controls .......................................................................... E-14
Attaching the Hand Strap ............................................................. E-16
Attaching the Optional Accessories .............................................. E-17
Maintenance and Storage .............................................................E-20
Specifications ................................................................................E-21
Introduction
Thank you for purchasing SEA&SEA products.
Please read this instruction manual carefully prior to using this product.
Only with a thorough understanding of this manual’s content will you
be able to use the housing correctly. After reading the manual, please
be sure to keep it in a place where you can easily come back to it at
any time.
Note:
Pressure-resistance inspection sticker
Products bearing this sticker are those that have passed SEA&SEA’s
criteria-based inspection for pressure resistance.
The appearance of color evenness or weld lines on the external body
of the product is normal and will not affect its performance.

E-2
WARNING
CAUTION
Safety Precautions
WARNING Situations that could result in severe injury or death.
CAUTION Situations that could result in property damage or
personal injury.
Carefully observe the instruction manual for the compatible camera for this product
before use.
This product has been designed and manufactured for use at a water depth within
55m / 180ft. Please note that diving to a depth in excess of 55m / 180ft may cause
damage to the product or may lead to water leakage.
Unauthorized disassembling and/or modification could result in malfunction or flooding,
and void product warranty. Take the product to a SEA&SEA authorized service
center for repair or inspection.
Should you notice smoke or an unusual smell coming from the product, turn it off and
remove the batteries immediately, taking care to avoid burns. Continued operation
could result in injury. After removing the battery, take the product to a SEA&SEA
authorized service center for inspection.
Discontinue use and turn the product off immediately should you notice flooding or
leakage.
When the product is flooding, interior pressure may build up. Please be careful when
opening the product as water may spurt out or the cap may open explosively and
cause injuries.
The product has been constructed with an airtight seal. When packing the product
for airplane travel, do not seal-up the product to alleviate pressure build up due to
atmospheric changes.
Do not open the product in a wet or sandy environment. Protect the interior from
moisture and debris in order to prevent malfunction or flooding.
Avoid strong shocks/impacts or excess stress to prevent malfunction, damage or
breakdown. Make sure that the product has been securely mounted to other products
in order to prevent injury, fall or missing.
Keep out of reach of children to prevent accidental ingestion. If swallowed, seek
medical advice immediately.
Failure to heed the precautions listed below could result in serious
consequences. To prevent injury or damage to yourself and/or others,
please observe the precautions as they contain highly important
information related to personal and product safety.
For safe handling of the product, please read the following precautions
carefully before use.

E-3
Safety Precautions
Do not rest heavy weight on the product. It might deform the outer casing, damage
internal parts, make the waterproofing fail, or result in fire or electric shock.
Please note that some marks may be left on the camera scraping against the dials
or gears of the housing.
Handle the product carefully so as not to scratch the front port, the lens, the flash
window or the finder.
Always dry the front port, the lens, the flash window or the finder using a soft cloth to
prevent stain or salt residue from marring the glass surface.
Rinse the product with fresh water, after underwater use. Ensure that the product is
waterproofed before rinsing. Refer to [Maintenance and Storage] (P.E-20) for details.
Make sure that the connectors have been secured with the connector caps before
rinsing the product with fresh water, after removal from other products.
Never use chemicals, cosmetics, any petroleum solvents such as paint thinner, or
neutral detergent on the product. They may deform and damage the product.
Do not leave the product in places with hot temperatures such as inside of a car or in
a car trunk in summer. The heat may deform plastic parts of the product, damaging
internal parts and resulting in potential fire or electric shock. If the product is sealed
tight in hot conditions, heated air expanding inside the product may deform the casing
and ruin the waterproofing.
Do not store the product in wet or high humidity place, to avoid mold, rust, corrosion
or malfunction.
Do not store the product with naphthalene or camphor mothballs, or in locations such
as a laboratory where chemicals are used. This environment can cause mold, rust,
corrosion or malfunction.
SEA&SEA SUNPAK Co., Ltd. assumes no liability for compensation of loss of
captured images or expenses caused by loss of images, even if you are unable to
shoot due to a product defect or malfunction.
SEA&SEA SUNPAK Co., Ltd. will not be responsible for the replacement or
compensation for cameras, lenses or those accessories damaged due to your
invalid operation.
SEA&SEA SUNPAK Co., Ltd. assumes no liability for errors or discrepancies in
this manual.
Carefully observe the O-ring maintenance manual for the handling of O-rings
before use.
The silicon grease included in the product package is inedible.

E-4
Precautions on Handling the O-ring
CAUTION
Are there any scratches or cracks in the O-ring?
Be careful about dust, sand, and hair
SEA&SEA products use blue O-rings. These O-rings are impregnated with
silicone oil through a special process. The lubricating effect of the O-ring lasts
as long as the silicone oil is gradually seeping out from within.
For the maintenance of these blue O-rings, make sure to use genuine SEA&SEA
silicone grease (O-ring grease for use with the blue O-rings that comes in tubes
with blue lettering and blue caps). If you use silicone grease from other companies
or SEA&SEA’s own silicone grease that comes in tubes with black lettering and
black caps, the grease you apply will be sucked into the blue O-rings due to
their special characteristics, which will result in insufficient grease. If this happens
even once, the O-ring will not revert to its normal state and must be replaced.
If the grease is insufficient, the O-ring will not slide, and it will become harder
to open and close the waterproof parts. Because of this, it could become
impossible to open or close the housing or it could cause flooding, so please
refrain from using the housing with insufficient grease.
Check the O-ring to make sure there are no
scratches or cracks. If there are, replace the
O-ring with a new one immediately. When
handling the O-ring, do not use pointed
metal objects, which could damage the
O-ring. Use of the included O-ring remover
is recommended.
Check the O-ring to make sure that there is no dust, sand, or hair on the O-ring,
in the O-ring’s grooves, or on the O-ring’s contact surfaces. If any of these things
are attached, remove them completely. If used as is, these things could cause
flooding.
This product is kept watertight by the O-ring. To keep the O-ring functioning
properly, please observe the following. Improper handling of the O-ring could
cause flooding.
O-ring remover

E-5
Silicone grease protects the O-ring from
chafing. After checking the O-ring to make
sure that there are no scratches, dust, or
debris, apply a light coating of silicone grease
to the entire O-ring with your finger. Applying
too much grease will make it easier for dust
and debris to adhere to the O-ring, and could
cause flooding.
When fitting the O-ring into the O-ring
groove, insert it straight into the groove; do
not bend or twist it.
Precautions on Handling the O-ring
Coat with silicone grease
Do not twist the O-ring
Remove the O-ring for inspection before each use
Be careful about how you store O-rings
O-rings last for one year
Although it depends on how well they are maintained, how often they are used,
and how they are stored, O-rings generally last for one year. It is advisable to
inspect them before use, and replace them early.
When storing spare O-rings or O-rings that you have removed from the housing,
keep them in a cool place out of direct sunlight. Also, when storing O-rings, do
not place heavy objects on them or twist them.
In principle, the O-ring should be removed before each use so that the O-ring,
O-ring groove, and O-ring contact surfaces can be checked. This is because you
cannot find any sand or debris that may have gotten into the O-ring groove if the
O-ring is not removed. For routine maintenance prior to each use, it is advisable
to make sure to remove the O-ring.

E-6
Identification of Parts
Mode dial
Enlarged view
button
▲ button
ADJ. button
Thumbnail display
button
MENU / OK button
Macro / ▼button
I□I / DISP. button
Self-timer / Fn2 / Delete button
Fn1 / button
Playback button
Monitor window
LCD monitor
hood holder
Tripod socket (bottom)
Power button
ADJ. lever
Rear case
Lock knob
Hand strap hook
String eyelet
Lens
Bayonet
External AF sensor
Front case
Fiber-optic cable socket
adapter
Accessory shoe
Shutter lever
Up-down
dial
SA8 M10 Fixed Ball Base Socket
Fiber-optic cable socket
Flash/ button

Preparation for Setting Up
Prepare the housing
Prepare the digital camera
E-7
This product must be used in combination with the optional equipment
(digital camera, port, strobe, accessories etc.) for underwater photography.
In order to set up the equipment, prepare each item correctly.
This product is exclusively designed for use with Richo GR DIGITAL
Ⅳdigital camera. Other cameras are not compatible with this product.
This product is kept watertight by the O-ring.
To keep the O-ring functioning properly,
please observe the following before setting up.
Make sure to remove the O-ring when maintaining.
For detailed O-ring maintenance methods,
please see the O-ring maintenance manual.
Maintaining the O-ring
Make sure that there is sufficient battery power remaining and the image
storage medium has enough room for the number of pictures.
Remove the strap from the camera if any of these accessories are
attached.
Make sure the camera is operating correctly, referring to the camera's
instruction manual for details.
CAUTION
Make sure to fit/install the O-ring into the groove properly after maintenance.
Prepare the connecting accessories
When using external strobes, lights or other accessories in combination
with this product, prepare the equipment before setting up.
If the accessories are kept watertight by O-rings, make sure the O-rings
are properly maintained.
If the accessories are powered by batteries, make sure that there is
sufficient battery power remaining.
Make sure the equipment is operating correctly, referring to the instruction
manual provided with the equipment.
O-ring

E-8
CAUTION
Opening and Closing the Housing
Opening the lock knob
Before opening the rear case, make
sure that the housing is completely
dry and free of salt deposits. If you
find any salt deposits, rinse with fresh
water and wipe off water completely
with a soft cloth.
Never turn the knob without pulling
the tab, as it may result in damage
to the knob.
The lock knob only turns up to 90
degrees. The lock knob may become
damaged if it is turned forcibly.
When pulling the tab outward, be sure to use the tips of your fingers, not
your fingernails.
Never use the tab/lock knob underwater.
When opening the rear case after use in the water, open it carefully not to
let water or sand enter inside the housing.
Opening and closing the housing is done with the lock knob. Here we
will explain how to open and close the lock knob.
1Push the tab outward to unlock
as indicated by ①, and rotate
the lock knob clockwise as
indicated by ②to lift the rear
cover from the front case (Fig. 1)
2Pull the rear case to open
(Fig.2) Fig.1
Fig.2
Tab

E-09
Opening and Closung the Housing
CAUTION
1
パチン錠を閉める
Closing the locking lock knob
Close the rear case, and rotate
the lock knob counterclockwise
Before aligning the rear case and front case, make sure there are no specks
of dust, acratches, or deformities on the O-ring and O-ring contact surfaces.
Check to make sure that the locking lock knob is securely locked.
Lock knob

E-10
Flash OPEN switch
Part A
Anti-reflective tape
Mode dial
lock release button
Mounting the Camera in the Housing
Before installing the camera, slide the
Flash OPEN switch to the outside to
raise the flash cover, open the flash,
and remove the lens cap from the
camera. Turn off the power of the
camera before installation.
To avoid flooding by trapping,
remove the hand strap from camera
before installation.
Please take precautions to make
sure that the camera is not inserted
at an angle. If you attempt to forcibly
insert the camera at an angle, the
lock button of the camera may become
caught on the housing and cause
the camera to become damaged or
to malfunction.
Place the anti-reflective tape on
the lens nameplate (part A) on
the camera
CAUTION
1
Turn off the power of the camera
and place it as shown in Fig.3
2
CAUTION
Fig.1
Fig.2
Fig.3
Fig.4

E-11
Mounting the Camera in the Housing
1Turn the lock knob
2Open the rear case
3Remove a camera from a front case
Removing the camera from the housing
Make sure that there is no dust
or scratches on the O-ring/O-ring
contact surface before closing
the rear case. Then, close the
rear case and the lock knob.
3
A substantial difference between the
external (water) and the internal
(camera and air) temperatures
sometimes result in dewfall on the
inside surface of the housing lens.
This phenomenon typically happens
when the camera becomes hot due
to long and consecutive use. Use
the optional Silicagel (62108) as
shown in Figure 6 to reduce dew
condensation.
Never install or remove the camera while the camera is ON. The ejected
lens may interfere with the housing and damage the camera and lens.
After the camera is mounted in the housing, make sure to check that all of
the housing's control parts work properly and the camera functions
correctly.
Make sure that the camera is set parallel to the housing and not
excessively slanted.
Fig.5
Fig.6
CAUTION
See:
“Opening and Closing the Housing”
(P. E-9)
Desiccant pack
(Sillica Gel)

E-12
Connecting the Strobe
Connect the strobe with the fiber-optic cable (option) when the strobe is
triggered by sensing the light from the camera's built-in flash.
CAUTION
Before inserting the fiber-optic cable, check to make sure that there are
no scraches or dirt on the connector surface. Scratches or dirt may
cause the strobe to malfunction.
To protect the surface from scratches or dirt, do not remove the caps from
the fiber-optic cable sockets when the cable is not inserted.
There is no possibility of water leaking from the fiber-optic cable socket
even if the fiber-optic cable/cable socket cap is removed underwater.
After the strobe is connected to the housing, make sure to check that the
connected strobe functions correctly before underwater use.
After each use in salt water, make sure to remove the fiber-optic cable
socket adapter from the housing, and then thoroughly soak the adapter
and housing in fresh water.
2Insert the fiber-optic cable's
connector into the socket until
it stops
Remove the fiber-optic cable
socket caps
Do not remove the caps from
fiber-optic cable sockets not in use
to keep light from entering in.
1
Fiber-optic cable socket cap

E-13
Use the camera’s built-in flash
If planning to use the built-in flash on the camera, remove the fiber
socket adapter from the housing.
Remove the two screws for the
fiber-optic cable socket adapter
on the housing by inserting the
accompanying hexagon
wrench into each and turning
counterclockwise
The fiber-optic cable socket adapter
can be removed with the fiber-optic
cable socket cap attached.
Please make sure not to lose the
removed parts.
1
Fiber-optic cable socket adapter

E-14
External Controls
Power button
Mode dial
Turning this dial changes the shooting
mode. Mode setting status is displayed
at the top center of the LCD monitor of
the camera.
Up-down dial
Turning this dial rotates the up-down dial
on the camera. Use this dial to work with
the menu and to change aperture or
setting value quickly and easily.
Use the power button to turn ON / OFF
the camera.
Shutter lever
Depress the shutter lever to press the
shutter button of the camera.
Power button
Mode dial
Up-down dial
Shutter lever

E-15
External Controls
ADJ. lever
ADJ. button
Other buttons
Pushing this button or turning this dial
to the right and left operates the ADJ.
lever on the camera.
ADJ. lever / ADJ. button
Other control parts on the housing correspond to the operation parts of the
digital camera. Refer to the camera's instruction manual for details of each
function.
Other buttons
CAUTION
After mounting the camera in the housing, make sure to check that all of
the housing's control parts work properly and the camera functions correctly
before underwater use.
In some cases, it may be difficult to
return the ADJ. lever to its normal
position while the camera is
submerged underwater because of
the force of the water pressure.
You cannot operate both the ADJ.
lever and ADJ. button at the same
time.
The housing and the camera may
become damaged or malfunction if
you attempt to use the ADJ. lever
and ADJ. button at the same time.

E-16
Attaching the Hand Strap
Push one end of the hand strap
through the hook on the housing,
insert the other end through the
loop produced, and then pull the
strap tight as shown
1
CAUTION
Do not use the strap when out of
water if using optional accessories
(such as a wide-angle conversion
lens, stay, arm, and strobe / light).
The increased weight of the
accessories may damage the strap
and the strap hook, which may
result in equipment damage / loss
or personal injury.

E-17
The LCD monitor hood holder on this product accepts the LCD monitor
hood with lens (52121).
LCD Monitor Hood with Lens
CAUTION
When attaching LCD monitor hood to the LCD monitor hood holder,
always make sure to refer to and follow the instructions in the
accompanying instruction manual.
CAUTION
Attaching the Optional Accessories
This product accepts SEA&SEA optional accessories. By using this
product in combination with those accessories, you will be able to try
various shooting techniques.
Lenses, strobes and other accessories have different depth rating. Check
the depth rating for each before use.
Read the instruction manual for each accessory before use.
After each use in salt water, make sure to remove the optional accessories
from the housing, and then thoroughly soak the accessories and housing
in fresh water.

E-18
Attaching the Optional Accessories
Attaching accessories to the bayonet
SEA&SEA optional accessories can be attached to the bayonet on this
housing. Refer to our website or product catalog for detailed information
on compatible accessories.
CAUTION
When using the lens, loosen or lightly shake the lens while underwater to
remove any air trapped between the lens and the housing.
When attaching accessories to the bayonet, always make sure to refer to
and follow the instructions in the accompanying instruction manual.
When using the wide-angle conversion lens for the DX-1G, do not allow
the strobe to protrude out past the lens on the lens side. If the strobe is
allowed to protrude out, glare from the camera lens may reflect onto the
wide-angle conversion lens for the DX-1G when the strobe is pushed
forward.
①
salient mark
Example: How to attach the wide-angle conversion lens for DX-1G(52116)
1Lign up the protrusion on the upper surface of the housing
lens with the ①on the lens bayonet, and then position the
close-up lens and push it into place on the housing
2Turn the wide-angle conversion lens clockwise until it clicks

Attaching the Optional Accessories
Stays / Arms
E-19
<Example>
With the ｔripod socket and the SA8 M10 Fixed Ball Base Socket, the
product will accept the SA8 M10 Fixed Ball Base Socket with the SA8
M10 Fixed Ball Base (22130) with a stay placed in the tripod screw hole.
Accessory shoe
<Example>
Strobes / lights can be mounted to the accessory shoe by using optional
Mini Shoe Arm (29511) or Hot Shoe Arm (29501) or SA8 Ball Base for
Accessory Shoe (22120).
CAUTION
The max. weight of an accessory that can be mounted to the accessory shoe
is approx. 1050g / 36.75oz.
Remove the accessories from the accessory shoe when carrying the housing
out of water.
When attaching the accessories to the accessory shoe, always refer to
the instruction manual provided.
SA8