Display Solutions Handheld PC User's Guide MobilePro 750C

4-2 Troubleshooting
Troubleshooting (cont'd)
PROBLEM RESOLUTION
Nothing
appears on the
screen. (cont'd)
Try recharging the main battery pack or
replacing the sub-battery.
Check that the ROM bay cover is properly
secure.
A low battery
message
appears.
Recharge the main battery.
When using a
PC card, such
as a modem,
the unit powers
off.
Connect the AC adapter to the unit when
using PC cards that require large amounts
of energy.
The AC adapter
doesn't work.
Make sure that the main battery and back-
up battery are 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.
The keyboard
doesn't
respond.
Reset the unit.
Check that you have not set the "disable
keyboard" of a handwriting recognition
application.
The serial port
doesn’t work.
Check that the cable connections are
secure.
The IrDA port
doesn’t work.
Check that nothing obstructs the path
between the transmitting and receiving IR
ports.
Check the procedure that you are using
against the instructions in “Transferring
Data” in the software user’s guide.