JRC JHS-770S - User manual

MARINE VHF RADIOTELEPHONE
MARINE VHF RADIOTELEPHONE
INSTRUCTION
INSTRUCTION
MANUAL
MANUAL
01ETM ISO 9001, ISO 14001 Certified
Printed in Japan
Marine Service Department
[phone]
[phone]
[email protected]
Telephone :
Facsimile :
e-mail :
AMSTERDAM Branch
Telephone :
Facsimile :
e-mail :
[phone]
[phone]
[email protected]
SEATTLE Branch
Telephone :
Facsimile :
e-mail :
[phone]
[phone]
[email protected]
CODE No.7ZPJD0406
CODE No.7ZPJD0406
AUG. 2007 Edition 1 JRC
AUG. 2007 Edition 1 JRC
Not use the asbestos
For further information,contact:
URL http://www.jrc.co.jp
JHS-770S/780D
JHS-770S/780D

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CAUTIONS AGAINST HIGH VOLTAGE
Radio and radar devices are operated by high voltages of anywhere from a few hundred volts up
to many hundreds of thousands of volts. Although there is no danger with normal use, it is very
dangerous if contact is made with the internal parts of these devices. (Only specialists should
attempt any maintenance, checking or adjusting.)
There is a very high risk of death by even a few thousand volts, in some cases you can be fatally
electrocuted by just a few hundred volts. To prevent accidents, you should avoid contact with the
internal parts of these devices at all costs. If contact is inevitable as in the case of an emergency,
you must switch off the devices and ground a terminal in order to discharge the capacitors. After
making certain that all the electricity is discharged, only then can you insert your hand into the
device. Wearing cotton gloves and putting your left hand in your pocket, in order not to use both
hands simultaneously, are also very good methods of shock prevention.
Quite often, an injury occurs by secondary factors, therefore it is necessary to choose a sturdy
and level working surface. If someone is electrocuted it is necessary to thoroughly disinfect the
affected area and seek medical attention as soon as possible.
When you find an electrocution victim, you must first switch off the machinery and ground all
circuits. If you are unable to cut off the machinery, move the victim away from it using a non-
conductive material such as dry boards or clothing.
When someone is electrocuted, and the electrical current reaches the breathing synapses of the
central nervous system inside the brain, breathing stops. If the victim's condition is stable, he or
she can be administered artificial respiration. An electrocution victim becomes very pale, and their
pulse can be very weak or even stop, consequently losing consciousness and becoming stiff.
Administration of first aid is critical in this situation.
Cautions concerning treatment of
electrocution victims

First aid
☆Note points for first aid
Unless there is impending danger leave the victim where he or she is, then begin artificial
respiration. Once you begin artificial respiration, you must continue without losing rhythm.
(1) Make contact with the victim cautiously, there is a risk that you may get electrocuted.
(2) Switch off the machinery and then move the victim away slowly if you must.
(3) Inform someone immediately (a hospital or doctor, dial emergency numbers, etc.).
(4) Lay the victim on his or her back and loosen any constrictive clothing (a tie, or belt).
(5) (a) Check the victim's pulse.
(b) Check for a heartbeat by pressing your ear against the victim's chest.
(c) Check if the victim is breathing by putting the back of your hand or face near the victim's
face.
(d) Check the pupils of the eyes.
(6) Open the victim's mouth and remove any artificial teeth, cigarette or chewing gum. Leave the
mouth opened and flatten the tongue with a towel or by putting something into the mouth to
prevent the victim's tongue from obstructing the throat. (If he or she is clenching the teeth and
it is difficult to open the mouth, use a spoon or the like to pry open the mouth.)
(7) Continually wipe the mouth to prevent the accumulation of saliva.

☆If the victim has a pulse but is not breathing
(“Mouth to mouth” resuscitation) Figure 1
(1) Place the victim’s head facing backward (place something under the neck like a pillow).
(2) Point the chin upward to widen the trachea.
(3) Pinch the victim’s nose, take a deep breath, then put your mouth over the victim’s mouth and
exhale completely, making sure that your mouth completely covers the victim’s mouth.
Then remove your mouth. Repeat this routine 10 to 15 times per minute (holding the
nostrils).
(4) Pay attention to the victim to notice if he or she starts to breath. If breathing returns, stop
resuscitation.
(5) If it is impossible to open the victim’s mouth, put something like a plastic straw or vinyl tube
into one of the nostrils then blow air in while covering the mouth and the other nostril.
(6) Occasionally, when the victim comes back to consciousness, they immediately try to stand
up. Prevent this and keep them in a laying position. Give them something warm to drink
and be sure that they rest (do not give them any alcohol).
Administering artificial respiration by raising the head.
①(1) Raise the back of head, then place one
hand on the forehead and place the
other hand under the neck. →①
Most victims open their mouth when
doing this, making “mouth to mouth”
resuscitation easier.
②(2) Cover the victim’s mouth by opening
your mouth widely, then push your cheek
against the victim’s nose, →②
or pinch the victim’s nose to prevent air
from leaking out of it. →③
③(3) Completely exhale into the lungs.
Exhale into the lungs until the chest is
inflates.
You have to blow as rapidly as possible
for the first 10 times.
“Mouse to mouse” artificial respiration
Figure 1

☆If the victim has no pulse and is not breathing
(Heart massage in combination with artificial respiration.) Figure 2
If the victim has no pulse, his or her pupils are dilated, and if you cannot detect a heartbeat, the
heart may have stopped, beginning artificial respiration is critical.
(1) Put both hands on the diaphragm, with hands on top of each other keeping both arms straight
(If your elbows are bent, you cannot push with as much power). Press the diaphragm with
your body weight until the chest sinks about 2 cm (about 50 times per minute).
(2) If administering first aid when alone:
Perform the heart massage about 15 times then blow in twice. Repeat this routine.
If administering first aid with two people:
One person performs the heart massage 5 times, and the other person blows air in once.
Repeat this routine (Heart massage and “mouth to mouth” resuscitation used together).
(3) Constantly check the pupils and the pulse, if the pupils become normal and the pulse steadies,
keep them in a laying position and give them something warm to drink, be sure that they rest
(do not give them any alcohol). In any case you have to entrust major decision making to a
doctor. Having understanding people around is essential to the victim’s recovery from the
mental shock of electrocution.
①②
③④
(Heart massage in combination with artificial respiration.) Figure 2

i
Preface
Thank you for choosing the Model JRC JHS-770S/780D Marine VHF Radiotelephone. This
radiotelephone can be used as a Global Maritime Distress and Safety System (GMDSS) radio
device, compliant with international regulations, that provides emergency communications and
standard communications capabilities for small and large ships.
● Please read this instruction manual thoroughly before using the JHS-770S/780D Marine VHF
Radiotelephone, and use it in accordance with the instructions contained herein.
● Please keep this manual available for future reference. Please refer to it if any difficulties
are encountered when using the equipment.

ii
Before Operation
Concerning the symbols
This manual uses the following symbols to explain correct operation and to prevent injury or
damage to property.
The symbols and descriptions are as follows. Understand them before proceeding with this
manual.
WARNING Indicates a warning that, if ignored, may result in
serious injury or even death.
CAUTION Indicates a caution that, if ignored, may result in injury
or damage to property.
Examples of symbols
The Δsymbol indicates caution (including DANGER and WARNING). The
illustration inside the Δsymbol specifies the content of the caution more
accurately. (This example warns of possible electrical shock.)
The ;symbol indicates that performing an action is prohibited. The illustration
inside the ;symbol specifies the contents of the prohibited operation. (in this
example disassembly is prohibited.)
The zsymbol indicates operations that must be performed. The illustration
inside the zsymbol specifies obligatory instructions. (In this example
unplugging is the obligatory instruction.)

iii
Handling precaution
WARNING
Do not open the equipment to inspect or repair it. Inspection or repairs by anyone other
than a specialized technician may result in fire, electrical shock, or malfunction.
If internal inspection or repair is necessary, contact our service center or agents.
Do not disassemble or customize this unit. Doing so may cause fire, electrical shock, or
malfunction.
Do not get this equipment wet or spill any liquids on or near this equipment.
Doing so may cause electrical shock or equipment malfunction.
Do not touch any of the areas with warning labels.
Doing so may cause electrical shock.
Do not use a voltage other than specified. Doing so may cause fire, electrical shock, or
malfunction.
Do not remove protective covers on the high voltage terminals. Doing so may cause
electrical shock.
Do not insert anything flammable into the equipment. Doing so may cause fire, electrical
shock, or malfunction.
If a distress call is received, make sure to inform the ship's captain or officer in charge.
This affects life of the crews and passengers on the ship in distress.
This unit is also used for the distress communication, in addition to usual communication.
Contact JRC or our agent if any problem is observed in this unit on usual operation or
inspection. Do NOT ignore or leave any problems of this unit.
Always use the specified fuse when replacing a fuse. Using a different fuse may result
in fire or malfunction.
Before replacing fuses of the POWER SUPPLY (NBD-865), always turn off the AC/DC
power switch and power source output to this unit.
In addition to the AC fuse on the panel of the POWER SUPPLY (NBD-865), there are also
DC fuses contained in the unit. Opening and working with the inside of the unit may
result in fire or electrocution, so with the exception of qualified service personnel, do NOT
attempt to replace the DC fuses. To replace the DC fuses, contact JRC or our agent.

iv
Handling precaution
CAUTION
Do not use this equipment for anything other than specified. Doing so may cause failure
or malfunction.
Do not turn the trimmer resistors or the trimmer capacitors on the PCB unit. Doing so
may cause failure or malfunction. They are preset at the manufacture.
Do not install this equipment in a place near water or in one with excessive humidity,
steam, dust or soot. Doing so may cause fire, electric shock, or malfunction.
Do not test the distress call as doing so will inconvenience local shipping and Rescue
Centers.
Do NOT turn off the power of the equipment when at sea because the SOLAS
Convention requires keeping CH16 watch at all times.
Always listen to CH16 except when talking on a specific channel.
To operate DSC and ATIS functions of this equipment, ID numbers must be registered
respectively. If not been registered, contact our agent or service center.
Leave installation of this equipment to our service center or agents. Special knowledge
on selecting the place where the antenna is to be mounted and setting the ID number
(MMSI) assigned to the ship is required besides mounting operation.
When sending a distress call, follow the instructions of the ship's captain or officer in
charge.
If a false distress call is transmitted accidentally, follow the instructions below:
1. Press CANCEL key on the controller (when appropriate, follow the commands on
screen) and terminate the transmission of the distress call.
2. Report the false distress call to a nearby RCC (Rescue Coordination Center).
(In Japan, inform the nearest Japan Coast Guard.)
Information to be reported:
The date/time, location, and reason why the false call was transmitted. Also report
the ship's name, type, nationality, ID number as well as the unit model name and
manufacture number/date, if possible.
3. Report the false distress call to nearby ships using CH16.
4. If any acknowledgements to the distress call are received, inform the ships of the
false distress call.