NEC 750C manual Troubleshooting contd

Troubleshooting (cont'd)

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

4-2 Troubleshooting