NEC MOBILEPRO 780 User Manual page 58

Nothing
appears on the
screen. (cont'd)
A low battery
message
appears.
When using a
PC card, such
as a modem,
the unit powers
off.
The AC adapter
doesn't work.
The keyboard
doesn't
respond.
The serial port
doesn't work.
The IrDA port
doesn't work.
PROBLEM
A-2 Troubleshooting
Try recharging the main battery pack.
Check that the ROM bay cover is properly
secure.
Recharge the main battery.
Connect the AC adapter to the unit when
using PC cards that require large amounts
of energy.
Make sure that the main battery is installed.
Check that the AC adapter connections are
secure.
Verify that the AC outlet being used is
working. Do this by plugging in another
electric device, such as a lamp.
Reset the unit.
If you have installed handwriting recognition
software, be sure that you have not set the
"disable keyboard" parameter in that
software.
Check that the cable connections are
secure.
Check that nothing obstructs the path
between the transmitting and receiving IR
ports.
Check the information in "Using the IR Port,"
in the NEC MobilePro 780 User's Guide.
Troubleshooting (cont'd)
RESOLUTION