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Chapter 4: Mobile Computing
charge. This is due to a safety switch in the battery module that is aimed at
preventing overheating due to overcharging. Once the battery cools down,
you will be able to charge it. In extremely cold weather, you may find that
it takes longer for the battery to charge or that it does not fully charge.
Slots and openings in the system are for ventilation purposes. Do not
obstruct or cover these openings or the system could overheat. Do not
place the system in close proximity to a source of heat or a source of dust.
Protect your modem. Be aware that phone systems can be either analog
or digital. Your modem is designed to work on an analog phone system.
Most residential telephones are analog. Digital phone systems typically
involve building–or company–specific PBX (Private Branch eXchange)
systems. Some PBX systems can use voltages that will damage an analog
modem. Before you hook up your modem in a hotel or at a new company,
check with the facilities manager. To find an analog line, you might look
for a fax machine. Your WinBook J Series notebook has built-in circuitry
protection for the modem in your system. This circuitry will help protect
your system from electrical damage, but it is still recommended that you
locate an analog line where possible. Note that there are products available
that will support analog modems on digital PBXs.
If an extension cord is used with this product, ensure that the total ampere
ratings of all the devices sharing the extension cord do not exceed the
rating of the extension cord, nor the rating of the wall outlet. As with the
AC Adapter, be certain that the cord is placed so that no one will trip over
it (since this might cause the computer to fall).
The WinBook notebook can be used safely in a moving car. Power
adapters that will connect between the WinBook notebook and a cigarette
lighter socket are available. For information, contact Sales at the number
listed on the “Read Me First” brochure that came with your system.
N4 manual w/no OS 3/7 3/11/02 3:43 PM Page 59
Summary of Contents for N4
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