IBM M400 - Manual (Page 10)

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.
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a
replacement.
Some products are equipped with a three-pronged plug. This plug fits only into a grounded
electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it
into a non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician
for an approved outlet adapter or to replace the outlet with one that enables this safety feature.
Never overload an electrical outlet. The overall system load should not exceed 80 percent of
the branch circuit rating. Consult an electrician for more information if you have questions
about power loads and branch circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible, and located
close to the equipment. Do not fully extend power cords in a way that will stress the cords.
Connect and disconnect the equipment from the electrical outlet carefully
Batteries
All IBM personal computers contain a non-rechargeable coin cell battery to provide power to
the system clock. In addition many mobile products such as Thinkpad notebook PCs utilize a
rechargeable battery pack to provide system power when in portable mode. Batteries supplied
by IBM for use with your product have been tested for compatibility and should only be
replaced with IBM approved parts.
Never attempt to open or service any battery. Do not crush, puncture, or incinerate batteries or
short circuit the metal contacts. Do not expose the battery to water or other liquids. Only
recharge the battery pack strictly according to instructions included in the product
documentation.
Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or
flame to “vent” from the battery pack or coin cell. If your battery is damaged, or if you notice
any discharge from your battery or the buildup of foreign materials on the battery leads, stop
using the battery and obtain a replacement from the battery manufacturer.
Batteries can degrade when they are left unused for long periods of time. For some
rechargeable batteries (particularly Lithium Ion batteries), leaving a battery unused in a
discharged state could increase the risk of a battery short circuit, which could shorten the life
of the battery and can also pose a safety hazard. Do not let rechargeable Lithium-Ion batteries
completely discharge or store these batteries in a discharged state.
Heat and product ventilation
Computers generate heat when turned on and when batteries are charging. Notebook PCs can
generate a significant amount of heat due to their compact size. Always follow these basic
precautions:
v Do not leave the base of your computer in contact with your lap or any part of your body
for an extended period when the computer is functioning or when the battery is charging.
Your computer produces some heat during normal operation. Extended contact with the
body could cause discomfort or, potentially, a skin burn.
viii IBM M400 PROJECTOR: User’s Guide