Lenovo 276583U Laptop User Manual


 
v 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.
v 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
Similar units to listed above
This practice ensures correct grounding of the units.
v If an electrical accident occurs:
Use caution; do not become a victim yourself.
Switch off power.
Send another person to get medical aid.
4 ThinkPad T400 and R400 Hardware Maintenance Manual