Lenovo B50-50 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.
