Service Manuals, User Guides, Schematic Diagrams or docs for : LG Audio FA-985AD FA-985AD

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FA-985AD


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SECTION 1. GENERAL PART
                                  ESD PRECAUTIONS
Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically 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 discharging wrist strap device, 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 ESD 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 ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
   generate electrical charges sufficient 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 you are ready
   to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
   conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
   protective material to the chassis or circuit assembly into which the device will by installed.

  CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
            SAFETY PRECAUTIONS.


8. Minimize bodily motions when handing unpackaged replacement ESD 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 sufficient to damage an ESD device).




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