User's Manual

Troubleshooting 8-9
l Make sure that there is no device radiating infrared rays, such as
remote-controlled devices or wireless headphones, near the
computer or device.
l Make sure that no direct sunlight or fluorescent lamps are near the
computer or device.
l Make sure that the IR ports are clean.
l Make sure that the IR device’s internal power (batteries) is adequate
or connected to AC power.
Keyboard and Mouse Problems
The external keyboard does not respond.
l Try connecting another external keyboard. If it works, replace the
former keyboard as it may be defective.
l Make sure that the keyboard cable is properly connected.
l Make sure that the wireless keyboard’ s internal batteries have
adequate power.
The numeric keypad is disabled.
l Make sure that the Num Lock is switched on. (Check if the Num Lock
Indicator appears or not.)
The PS/2 mouse does not work.
l Make sure that the mouse cable is properly connected.
The serial mouse does not work.
l Make sure that the mouse cable is properly connected.
l Make sure that you connect the mouse before booting the computer.
LAN Problems
I cannot access the ne twork.
l Make sure that the LAN driver is correctly installed.