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If Something Goes Wrong
Power and the batteries
6 If the error recurs, remove the memory module entirely and
check for the error again.
If removing the memory module eliminates the error, the
memory module may be faulty. If the error recurs without the
memory module installed, the error is not caused by the
memory module.
TECHNICAL NOTE: You must have at least one memory module
installed for the computer to work.
For this model, Slot A is the bottom slot. Slot B is the top slot. If only
one memory module is to be installed, it must be installed in Slot A.
Power and the batteries
Your computer receives its power through the AC adaptor and
power cord/cable or from the system batteries (battery, optional
secondary battery, and real-time clock (RTC) battery). Power
problems are interrelated. For example, a faulty AC adaptor or
power cord/cable will neither power the computer nor recharge the
batteries.
Here are some typical problems and how to solve them:
The AC power light does not come on when you plug in the
AC adaptor and power cord/cable.
Make sure the AC adaptor and power cord/cable are firmly plugged
into both the wall outlet and the computer.
If the AC power light still does not come on, check that the wall
outlet is working properly by plugging in a lamp or other appliance.
The AC adaptor and power cord/cable work correctly, but the
battery will not charge.
The battery does not charge while the computer is consuming full
power. Try turning off the computer.
The battery may not be inserted correctly in the computer. Turn off
the computer, remove the battery, clean the contacts with a soft dry
cloth (if necessary) and replace the battery. See “Removing the
battery from the computer” on page 94.
NOTE