5
2.2.
Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor
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 alumi-
num 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 antistatic solder removal device. Some solder removal devices not classified as
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 compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, 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) suf-
ficient to damage an ES device).
Содержание NV-GS500EG
Страница 9: ...9 4 Specifications...
Страница 11: ...11...
Страница 18: ...18 Fig D2 Fig D3 Fig D4 Fig D5...
Страница 19: ...19 Fig D6 Fig D7 Fig D8 Fig D9...
Страница 20: ...20 Fig D10 Fig D11 Fig D12 Fig D13...
Страница 21: ...21 Fig D14 Fig D15 Fig D16 Fig D17...
Страница 22: ...22 Fig D18 Fig D19...
Страница 23: ...23 Fig D20 Fig D21 Fig D22 Fig D23...
Страница 24: ...24 Fig D24 Fig D25 Fig D26 Fig D27...
Страница 25: ...25 Fig D28 Fig D29 Fig D30 Fig D31...
Страница 26: ...26 Fig D32...
Страница 28: ...28 Fig M3...
Страница 29: ...29 Fig M4 Fig M5...
Страница 30: ...30 Fig M6...
Страница 37: ...37 Fig E2 Rough image of set up connection...
Страница 41: ...41 Fig D2 Fig D3 Fig D4...
Страница 65: ...S 23...
Страница 67: ...S 25 2 4 s NV GS500 GS508 Series Front P C B Foil Side 6 4 4 4 4 4 4 4 4 3 3...
Страница 74: ...S 32...
Страница 88: ...S7 5 Video Mechanism Section S 46 501 1 501 502 B503 B504 B502 B505 B501 B507 B506 501 1 1 501 2...
