Lenovo ThinkCentre M55 Hardware Maintenance Manual - Page 14

Grounding requirements, Safety notices (multi-lingual translations), Brazilian/Portuguese

Page 14 highlights

• Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. • Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices. • Select a grounding system, such as those listed below, to provide protection that meets the specific service requirement. Note: The use of a grounding system is desirable but not required to protect against ESD damage. - Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground. - Use an ESD common ground or reference point when working on a double-insulated or battery-operated system. You can use coax or connector-outside shells on these systems. - Use the round ground-prong of the ac plug on ac-operated computers. Grounding requirements Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician. Safety notices (multi-lingual translations) The caution and danger safety notices in this section are provided in the following languages: • English • Arabic • Brazilian/Portuguese • Chinese (simplified) • Chinese (traditional) • French • German • Hebrew • Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. • Connect all power cords to a properly wired and grounded electrical outlet. • Connect to properly wired outlets any equipment that will be attached to this product. • When possible, use one hand only to connect or disconnect signal cables. 8 Hardware Maintenance Manual

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Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when
you are wearing a wrist strap.
Use the black side of a grounded work mat to provide a static-free work surface. The mat is especially
useful when handling ESD-sensitive devices.
Select a grounding system, such as those listed below, to provide protection that meets the specific
service requirement.
Note:
The use of a grounding system is desirable but not required to protect against ESD damage.
Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground.
Use an ESD common ground or reference point when working on a double-insulated or
battery-operated system. You can use coax or connector-outside shells on these systems.
Use the round ground-prong of the ac plug on ac-operated computers.
Grounding requirements
Electrical grounding of the computer is required for operator safety and correct system function. Proper
grounding of the electrical outlet can be verified by a certified electrician.
Safety notices (multi-lingual translations)
The caution and danger safety notices in this section are provided in the following languages:
English
Arabic
Brazilian/Portuguese
Chinese (simplified)
Chinese (traditional)
French
German
Hebrew
Italian
Korean
Spanish
DANGER
Electrical current from power, telephone and communication cables is hazardous.
To avoid a shock hazard:
Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration
of this product during an electrical storm.
Connect all power cords to a properly wired and grounded electrical outlet.
Connect to properly wired outlets any equipment that will be attached to this product.
When possible, use one hand only to connect or disconnect signal cables.
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Hardware Maintenance Manual