Make sure that the device connected is using an equivalent speed.
Make sure that the IrDA Fast Infrared Port is set to HP
Make sure that the IR port is set correctly in the SCU program.
If you are printing to an infrared printer, make sure that the appropriate driver is installed.
If you are using any file transfer functions, make sure that both the computer and the IR device have the appropriate software running.
Make sure that there is no device radiating infrared rays, such as
Make sure that no direct sunlight or fluorescent lamps are near the computer or device.
Make sure that the IR ports are clean.
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.
Try connecting another external keyboard. If it works, replace the former keyboard as it may be defective.
Make sure that the keyboard cable is properly connected.
Make sure that the wireless keyboard’s internal batteries have adequate power.
The numeric keypad is disabled.
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.
Make sure that the mouse cable is properly connected.
Troubleshooting |
