JRC JHS-800S, Instruction Manual, Page: 3 / 156

Safety Precautions
Radio and radar devices are operated by high voltages of anywhere from a few hundred
volts up to many hundreds of thousands of volts.
Observe the following precautions to prevent the risk of electric shock.
Avoid contact with the internal parts of these devices.
Only specialized service people should do any maintenance, inspections, or adjustments
inside the devices.
Falling after receiving an electric shock may lead to extensive secondary injuries, so be sure
you have a safe place to stand when working.
In the event that someone receives an electric shock, immediately implement emergency
procedures, such as cardiopulmonary resuscitation.
If you must reach into a device, 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
dry cotton work gloves is another way to reduce risks. One more necessary precaution is to
not use both hands at the same time.
Although there is no danger with normal use, it is very dangerous if contact is made
accidently with the internal parts of these devices. There is a very high risk of death by high
voltages of tens of thousands of volts. In some cases, you could be fatally electrocuted by
voltages of several hundred volts.
If you find an electrocution victim, you must first switch off the machinery that caused the
electrocution and ground all circuits.
If you are unable to immediately cut off the circuit, do not directly touch the victim. Quickly
use a non-conductive material, such as a dry board or cloth, to move the victim away from
the device.
If someone receives an electric shock, immediately implement emergency procedures, such
as cardiopulmonary resuscitation.
When a person is electrocuted, the current passes through their heart and may cause
ventricular fibrillation or cardiac arrest. Also, if the shock is mild, the victim's breathing may
be restored by doing artificial respiration. An electrocution victim becomes very pale, their
pulse can be very weak or even stop, and they may lose consciousness and become stiff.
CAUTIONS AGAINST HIGH VOLTAGE
Precautions for rescuing victims from electrocution