Precautions
1-4
Samsung Electronics
1-3 ESD Precautions
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be dam-
aged easily by static electricity.
Such components commonly are called Electrostati-
cally Sensitive Devices(ESD). Examples of typical ESD
devices are integrated circuits and some field-effect
transistors and semiconductor chip components. The
following techniques should be used to help reduce
the incidence of component damage caused by static
electricity.
(1) Immediately before handling any semiconductor
component or semiconductor-equipped assembly,
drain off any electrostatic charge on your body by
touching a known earth ground. Alternatively,
obtain and wear a commercially available dis-
charging wrist strap device, which should be
removed for potential shock reasons prior to apply-
ing power to the unit under test.
(2) After removing an electrical assembly equipped
with ESD devices, place the assembly on a conduc-
tive surface such as aluminum foil, to prevent elec-
trostatic charge buildup or exposure of the assem-
bly.
(3) Use only a grounded-tip soldering iron to solder or
unsolder ESD devices.
(4) Use only an anti-static solder removal devices.
Some solder removal devices not classified as
“anti-static” can generate electrical charges suffi-
cient to damage ESD devices.
(5) Do not use freon-propelled chemicals. These can
generate electrical charges sufficient to damage
ESD devices.
(6) Do not remove a replacement ESD device from its
protective package until immediately before your
are ready to install it.(Most replacement ESD
devices are packaged with leads electrically short-
ed together by conductive foam, aluminum foil or
comparable conductive materials).
(7) Immediately before removing the protective ma-
terials from the leads of a replacement ESD device,
touch the protective material to the chassis or cir-
cuit assembly into which the device will be
installed.
CAUTION :
Be sure no power is applied to the ch-
assis or circuit, and observe all other safety precau-
tions.
(8) Minimize bodily motions when handling unpack-
aged replacement ESD devices. (Otherwise harm-
less motion such as the brushing together of your
clothes fabric or the lifting of your foot from a car-
peted floor can generate static electricity sufficient
to damage an ESD device).
Summary of Contents for DVD-HR755
Page 70: ...Samsung Electronics 9 1 9 Wiring Diagram ...
Page 72: ...PCB Diagrams 10 2 Samsung Electronics 10 1 S M P S PCB COMPONENT SIDE ...
Page 73: ...PCB Diagrams Samsung Electronics 10 3 CONDUCTOR SIDE ...
Page 78: ...10 4 HDMI PCB CONDUCTOR SIDE IC1 COMPONENT SIDE PCB Diagrams 10 8 Samsung Electronics ...
Page 79: ...PCB Diagrams Samsung Electronics 10 9 10 5 Function PCB CONDUCTOR SIDE COMPONENT SIDE ...
Page 101: ...Samsung Electronics 12 1 12 Operating Instructions ...
Page 102: ...Operating Instructions 12 2 Samsung Electronics ...
Page 103: ...Operating Instructions Samsung Electronics 12 3 ...
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