HP Z210 HP Z210 CMT Workstation Maintenance and Service Guide - Page 67
Service considerations, Cautions, warnings and safety precautions, ESD information, Generating static
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NOTE: HP accessories are for use in HP Workstation products. They have been extensively tested for reliability and are manufactured to high quality standards. Service considerations Review the following service considerations before replacing system components. Cautions, warnings and safety precautions Review the cautions, warnings, and safety precautions before accessing the computer components. Also, review the Safety and Regulatory Guide that came with the computer for more information. ESD information Generating static The following table shows that different activities generate different amounts of static electricity through electrostatic discharge (ESD). Static electricity increases as humidity decreases. Relative humidity Event 55% 40% 10% Walking across carpet Walking across vinyl floor Motions of bench worker 7,500V 3,000V 400V 15,000V 5,000V 800V 35,000V 12,000V 6,000V Removing bubble pack from PCB Packing PCBs in foam-lined box 7,000V 5,000V 20,000V 11,000V 26,500V 21,000V CAUTION: Static electricity in the amount of 700 volts might degrade a product. ENWW Service considerations 55