Prevention Of Electro Static Discharge (Esd) To Electro Statically Sensitive (Es) Devices - Yamaha DVD-C996 Service Manual

DVD-C996/DV-C6280
PREVENTION OF ELECTRO STATIC DISCHARGE (ESD) TO ELECTRO
STATICALLY SENSITIVE (ES) DEVICES
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically
Sensitive (ES) Devices. Examples of typical ES 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 electro static discharge
(ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching
a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for
potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent
electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD protected)" can generate
electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES
devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES divice, touch the protective material to the chassis or
circuit assembly into which the device will be installed.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of
your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).
There are special components used in this equipment which are important for safety.
These parts are marked Z by in the schematic diagrams, exploded views and replacement parts list. It is
essential that these critical parts should be replaced with manufacturer's specified parts to prevent shock, fire, or
other hazards. Do not modify the original design without permission of manufacturer.
LOCALE MANAGEMENT INFORMATION
Locale Management Information : This DVD player is designed and manufactured to respond to the Locale
Management Information that is recorded on a DVD disc. If the Locale number described on the DVD disc does not
correspond to the Locale number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright
protection technology that is
protected by method claims of
certain U.S. patents and other
intellectual property rights owned
by Macrovision Corporation and
other rights owners. Use of this
copyright protection technology
must be authorized by Macrovision
Corporation, and is intended for
home and other limited viewing uses
only unless otherwise authorized
b y M a c r o v i s i o n C o r p o r a t i o n .
Reverse engineering or disassembly
is prohibited.
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IMPORTANT SAFETY NOTICE
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