Xerox 7700 서비스 매뉴얼 - 페이지 12

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Xerox 7700에 대해서도 마찬가지입니다: 사용자 설명서 (35 페이지), 보충 설명서 (1 페이지), 설치 매뉴얼 (42 페이지), 설정 및 빠른 참조 매뉴얼 (40 페이지), 설치 매뉴얼 (33 페이지), 서비스 매뉴얼 (17 페이지), 설정 매뉴얼 (2 페이지)

ESD Precautions

Some semiconductor devices are easily damaged from static electricity.

These components are Electrostatically Sensitive Devices (ESDs); examples

include integrated circuits (ICs), Large-Scale Integrated circuits (LSIs), some

field-effect transistors and semiconductor chip components. The following

techniques reduce the occurrence of component damage caused by static

electricity:

CAUTION:

Be sure the power is Off to the chassis or circuit board, and

observe all other safety precautions.

Immediately before handling any semiconductor components assemblies,

drain the electrostatic charge from your body by touching a known earth

ground. Alternatively, wear a discharging wrist strap device. (Be sure to

remove the strap before applying power to the unit under test to avoid

potential shock.)

After removing an ESD-equipped assembly, place it on a conductive

surface such as aluminum foil or the static bag to prevent accumulation of

an electrostatic charge.

Do not use freon-propelled chemicals. These can generate electrical

charges sufficient to damage ESDs.

Do not remove a replacement ESD from its protective package until you

are ready to install it. Most replacement ESDs are packaged with leads

that are electrically shorted together by conductive foam, aluminum foil or

other conductive materials.

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 is to be installed.

Minimize body motions when handling unpackaged replacement ESDs.

Motion such as your clothes brushing together, or lifting a foot from a

carpeted floor can generate enough static electricity to damage an ESD.

Handle ICs and EPROMs carefully to avoid bending a pin.

Pay attention to the direction of parts when mounting or inserting them on

a PCB.

Phaser 7700 Color Printer Service Manual