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– When working on a double-insulated or battery-operated system, use an ESD common ground or
reference point. 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 (multilingual translations)
The safety notices in this section are provided in the following languages:
• English
• Arabic
• Brazilian Portuguese
• French
• German
• Hebrew
• Japanese
• Korean
• Spanish
• Traditional Chinese
DANGER
DANGER
DANGER
4
X390 Yoga Hardware Maintenance Manual
Содержание ThinkPad X390
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Страница 57: ...Major FRUs d a b c Chapter 6 Locations 51 ...
Страница 60: ...LCD FRUs 54 X390 Yoga Hardware Maintenance Manual ...
Страница 101: ... 2090 Wireless antenna kit on page 91 Chapter 8 Removing or replacing a FRU 95 ...
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Страница 108: ...Part Number SP40K05260 Printed in 1P P N SP40K05260 1PSP40K05260 ...