vDo 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.
vDo 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.
vIf an electrical accident occurs:
–Use caution; do not become a victim yourself.
–Switch off power.
–Send another person to get medical aid.
4ThinkPad T400s, T410s, and T410si Hardware Maintenance Manual
