Lenovo 28155YU, 28155XU, 2808DKU manual Power supply units –Pumps –Blowers and fans

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 Hardware Maintenance Manual