User's Manual Part 2

6-3Caring for the Tablet Computer
screen), recalibrate the touchscreen display (see “Calibrating the Screen”
on page 2-3).
Troubleshooting
When you encounter problems when using the Tablet Computer, try the
following troubleshooting tips rst to detect and solve the problem.
Many faults can also be cleared by removing the batteries and AC power
connections for a period of several seconds. Then re-install the batteries,
connect the AC power and then turn on the Tablet Computer again.
If problems persist, contact customer support.
Problem Solution
The battery is not
charging.
• Make sure the AC adapter is properly
connected.
• Make sure the battery is not too hot or too cold.
• Make sure the battery packs are installed
correctly.
• Make sure the battery terminals are clean.
• The Tablet Computer may have come from
an outdoor environment which exceeds the
charging ambient temperature. Wait a while for
the battery pack to reach the appropriate room
temperature, and it will start charging.
Nothing appears on the
screen.
• The Tablet Computer may be in sleep mode.
Press the power button to wake up the display.
• The brightness level may be too low. Increase
brightness (see “Adjusting Screen Brightness”
on page 2-11).
The screen suddenly
turns blank and the
power indicator goes off.
• Make sure the AC adapter is properly
connected.
• If using battery packs, the batteries may be
depleted, replace or charge the batteries.
I cannot use the wireless
LAN feature.
• Make sure that wireless LAN feature is turned
on.
Wireless LAN signal
quality is poor.
• The Tablet Computer may be out of range. Move
your Tablet Computer closer to the access point
or another wireless LAN device associated with
it.
• Check if your surroundings have interferences,
such as microwave ovens, cordless phones.
Move the Tablet Computer away from objects
causing interference.