Lenovo IdeaPad Y570 Lenovo Y470/Y570 Hardware Maintenance Manual - Page 8

Blowers and fans, Power supply units - manual

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Lenovo Y470/Y570 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: - Use caution: do not become a victim yourself. - Switch off the power. - Send the victim to get medical aid. 4

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Lenovo Y470/Y570 Hardware Maintenance Manual
4
•
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:
–
Use caution: do not become a victim yourself.
–
Switch off the power.
–
Send the victim to get medical aid.