Electro-Static Discharge (Esd) Caution And Warnings - Lenovo ThinkSystem D4390 Hardware Installation And Maintenance Manual

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CAUTION: Not all power cords have the same current ratings. Do not use the power cord provided with your
equipment for any other products or use. Do not use household extension cords with your product.
CAUTION: For products with multiple power cords, all power cords must be disconnected to completely remove
power from the system.
For AC power, disconnect all power cords from their AC power source.
Below mark is used when multiple power supplies are installed in a system.

2.1.3 Electro-Static Discharge (ESD) Caution and Warnings

WARNING:
In order to maximize overall product quality and eliminate the possibility of damage from electro-static
discharge, please observe ESD handling procedures wherever this symbol (
system integration.
All Employees must attend an ESD training class prior to performing any system or board handling. If you
have not been properly trained, contact your immediate supervisor to schedule training.
Required use of heel straps on both feet and/or wrists strap where applicable to ensure that you are properly
grounded by testing the continuity of the straps at a certified ESD station.
If you remove your heel straps or wrist straps for any reason, you must retest to ensure proper grounding.
To ensure the policies regarding ESD controls for all personnel who work in the manufacturing departments
are enforced.
8
) is present during the

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