Safety Information

For your safety and the safety of others, review and follow all electrostatic discharge precautions, cathode-ray tube (CRT) procedures, and battery handling precaution documentation presented in this section.

I. ESD Damage Prevention

Follow these guidelines to reduce the risk of electrostatic discharge (ESD) damage to equipment.

ESD Prevention Rules Setting Up an ESD-Safe Workstation

II. CRT and LCD Safety

It's imperative to know and follow all CRT safety procedures listed in this section.

CRT Safe Electrical Setup Precautions

Discharging the Cathode Ray Tube (CRT) Removing the CRT/Video Board Establishing an Ongoing Lead to Ground Return Worn-Out CRTs

LCD Safety

III. Battery Handling

A primer on battery handling and disposal.

Battery Disposal

I. ESD Damage Prevention

ESD Prevention Rules Setting Up an ESD-Safe Workstation

ESD Prevention Rules

Leads

Grounds

Handle all ICs by the body. Do not touch the leads. Also, do not touch the edge connectors on exposed circuitry, or printed circuits on boards or cards. Handle ICs, boards, and cards by the edges, or use extractors.

Before working on any device containing a printed circuit, ground yourself and your equipment to an earth or building ground. Use a grounded conductive workbench mat and grounding wriststrap, and ground your equipment to the mat.

Warning: Make sure you are not grounded when

• You work on plugged-in equipment
• You discharge a cathode ray tube (CRT)
• You work on an unplugged CRT that has not yet been discharged
• You are performing live adjustments

Metals

Never place components on any metal surface (such as a metal filing cabinet). Use antistatic, conductive, or foam rubber mats.

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Bodies

Bags

Synthetics

Atmosphere

If possible, keep the humidity in the service area between 70% and 90%, and use an ion generator. Charge levels are reduced (but not eliminated) in high-humidity environments and in areas where an ion generator is routinely used.

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Setting Up an ESD-Safe Workstation

To prevent electrical shock, you will need to make an exception to these guidelines when performing certain tasks on a CRT. When there is a risk of contacting high voltage, such as when you discharge a CRT or work with a powered-on CRT, do not wear a grounding wriststrap or heelstrap, and do not work on a grounded pad.

Materials Required

Do not touch anybody who is working on integrated circuits. If that person is properly grounded, your zap may not cause any damage, but just to be on the safe side, do not touch or brush against other technicians.

Use static-shielding bags during storage, transportation, and handling of boards and chips. When you are ready to leave your bench and take a board to a storage place, put the board in a static-shielding bag. Leave all Apple replacement modules in their ESD-safe packaging until you need them.

Do not wear polyester clothing or bring plastic, vinyl, or styrofoam into the work environment. The