Hansol H950VI B19BF, Руководство по обслуживанию, Страница: 7 / 41

7 Service Manual
PRECAUTIONS
Precautions
1-3 Electrostatically Sensitive Devices(ESD) Precautions
Some semiconductor (solid state) devices can be easily damaged by static electricity. such
components are commonly called Electrostatically Sensitive Devices(ESD). Examples of typical ESD
devices are integrated circuits and some field-effect transistors. The following techniques will reduce
the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor components or assemblies, drain the electrostatic
charge from your body by touching a known earth ground. Alternatively, wear a discharging
wrist strap device. To avoid a shock hazard, be sure to remove the wrist strap before applying
power to the monitor.
2. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil
to prevent accumulation of an electrostatic charge.
3. Do not use freon-propelled chemicals. These can generate electrical charges Sufficient to damage
ESDs.
4. Use only a ground-tip soldering iron to solder ESDs.
5. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-
static" can generate electrical charges sufficient to damage ESDs.
6. Do not remove a replacement ESD from its protective package until you are ready to install it. Most
relacement ESDs are packaged with leads that are electrically shorted together by conductive
foam, aluminum foid or other conductive materials.
7. Immediately before removing the protective material from the leads of a replacement ESD, 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 body motions when handling unpackaged replacement ESDs. Motions such as brushing
clothes together, or lifting your font from a carpeted floor can generate enough static electricity to
damage an ESD.