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General Safety Guidelines; Service; Power Cords And Power Adapters; Extension Cords And Related Devices - IBM 73P3309 User Manual

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General safety guidelines

Always observe the following precautions to reduce the risk of injury and property damage.


Do not attempt to service a product yourself unless instructed to do so by the IBM HelpCenter. Use only
an IBM authorized service provider who is approved to repair your particular product.
Note: Some parts can be upgraded or replaced by the customer. These parts are referred to as Customer
Replaceable Units, or CRUs. IBM expressly identifies CRUs as such, and provides documentation with
instructions when it is appropriate for customers to replace those parts. You must closely follow all
instructions when performing such replacements. Always make sure that the power is turned off and that
the product is unplugged from any power source before you attempt the replacement. If you have any
questions or concerns, contact the IBM HelpCenter.

Power cords and power adapters

Use only the power cords and power adapters supplied by the product manufacturer.
Never wrap a power cord around the 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 so that they will not be walked on, tripped over, or pinched by objects.
Protect the cord and power adapters from liquids. For instance, do not leave your 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 cord or power adapter has been stressed by misuse. Liquids can also cause
gradual corrosion of the power cord terminals and/or the connector terminals on the 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 and/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.

Extension cords and related devices

Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you
use are rated to handle the electrical requirements of the product. Never overload these devices. If power
strips are used, the load should not exceed the power strip input rating. Consult an electrician for more
information if you have questions about power loads, power requirements, and input ratings.

Plugs and outlets

If a receptacle (power outlet) that you intend to use with your computer equipment appears to be
damaged or corroded, do not use the outlet until it is replaced by a qualified electrician.
© Copyright IBM Corp. 2004



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