CAUTION
Before replacing any CRUs, turn off the computer and wait three to five minutes to
let the computer cool before opening the cover.
Power cords and power adapters
DANGER
Use only the power cords and power adapters supplied by the product
manufacturer. The power cord and power adapter are intended for use with this
product only. They should never be used with any other product.
The power cords shall be safety approved. For Germany, it shall be H05VV-F, 3G,
0.75 mm2, or better. For other countries, the suitable types shall be used
accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can
stress the cord in ways that can cause the cord to fray, crack, or crimp. This can
present a safety hazard.
Always route power cords or any other cables so that they will not be walked on,
tripped over, or pinched by objects.
Protect power cords and power adapters from liquids. For instance, do not leave
your power cord or power adapter near sinks, tubs, toilets, or on floors that are
cleaned with liquid cleansers. Liquids can cause a short circuit, particularly if the
power cord or power adapter has been stressed by misuse. Liquids also can cause
gradual corrosion of power cord terminals and/or the connector terminals on a
power adapter, which can eventually result in overheating.
Always connect power cords and signal cables in the correct order and ensure that
all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows
signs of overheating (such as deformed plastic) at the ac input or anywhere on the
power adapter.
Do not use any power cords where the electrical contacts on either end show signs
of corrosion or overheating or where the power cord appears to have been
damaged in any way.
4 Lenovo 3000 Safety and Warranty Guide