Solving Keyboard And Mouse Problems - HP 280 G4 MT Maintenance And Service Manual

Printer prints garbled information.
Cause
The cables may not be connected properly.
Printer memory may be overloaded.
Printer will not print.
Cause
The printer may be out of paper.

Solving keyboard and mouse problems

If you encounter keyboard or mouse problems, see the documentation that came with the equipment and to the
common causes and solutions listed in the following table.
A wireless keyboard/mouse is not working correctly. Symptoms include lagging mouse movement, jumpy mouse/keyboard, or no function
of mouse/keyboard and external drive.
Cause
If your computer is equipped with USB 3.0 ports, connected USB 3.0
devices can interfere with the wireless keyboard USB receiver.
Keyboard commands and typing are not recognized by the computer.
Cause
Keyboard connector is not properly connected.
Program in use has stopped responding to commands.
Keyboard needs repairs.
Computer is in Sleep state.
Cursor will not move using the
Cause
The Num Lock
70 Chapter 6 Troubleshooting without diagnostics
arrow keys on the keypad.
key is on.
Solution
Reconnect all cables.
Reset the printer by turning it off for one minute, then turn it back
on.
Solution
Check the paper tray and refill it if it is empty.
Solution
Connect the wireless keyboard USB receiver to a USB 2.0 port that
is separated from ports with USB 3.0 devices. If you still experience
interference, you may have to place the connectors farther apart
using an external USB hub.
Solution
Shut down the computer, reconnect the keyboard to the back of the
computer, and then restart the computer.
Shut down your computer using the mouse and then restart the
computer.
See the Worldwide Limited Warranty for terms and conditions.
Press the power button to resume from Sleep state.
CAUTION: When attempting to resume from Sleep date, do not
hold down the power button for more than four seconds.
Otherwise, the computer will shut down and you will lose any
unsaved data.
Solution
Press the Num Lock key. The Num Lock light should be off if you
want to use the arrow keys on the keypad. You can disable or