Lenovo Flex 3 -1435 Laptop Hardware Maintenance Manual - Lenovo Flex 3-1470, F - Page 8
Blowers and fans, Power supply units
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Flex 3-1470/Flex 3-1470 (HSW)/Flex 3-1435/Flex 3-1475/Flex 3-1570/ Flex 3-1570 (HSW)/Flex 3-1535 Hardware Maintenance Manual • Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, nongrounded power extension cables, power surges, and missing safety grounds. • Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage. • Do not service the following parts with the power on when they are removed from their normal operating places in a machine: - Power supply units - Pumps - Blowers and fans - Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: - Caution: do not become a victim yourself. - Switch off the power. - Send the victim to get medical aid. 4