Heat Problems Keep in mind that your notebook normally gets warm during routine operation. Charging the battery and running games and other programs that drive CPU usage toward 100% can further increase the notebook’s temperature. If the notebook gets unusually warm • Always set the notebook on a firm, flat surface, so that air can flow freely around and beneath it. • Make sure the air vents on the right side and back of the notebook are clear. • Make sure the fan is working properly. If needed, test the fan’s operation with the e-DiagTools diagnostics— see “Using the e-Diagtools Diagnostic Tests” on page 32.
Infrared Problems If you have problems with infrared communication • Make sure the line between the two infrared ports is not blocked, and that the ports face each other as squarely as possible. The ports should be no more than 1 meter apart, with no obstructions between them. Sunlight, heat from nearby equipment, and other sources of infrared radiation can also interfere with infrared communications. • Make sure only one application is using the infrared port. Keyboard and Pointing Device Problems If the pointer is difficult to control • Adjust the pointer controls: click Start, Control Panel, Printers and Other Hardware, Mouse.
If the touch pad or scroll pad doesn’t work • Don’t use the touch pad or scroll pad while the notebook is rebooting or resuming. If this happens, try the following: • Press any key on the keyboard. • Put the notebook on standby, then resume operation. • The touch pad and scroll pad are automatically disabled when the notebook is docked in a port replicator that has a PS/2 mouse connected. • Restart the notebook: click Start, Turn Off Computer, Restart. • Check settings: click Start, Control Pad, Printers and Other Hardware, Mouse, Scrolling. • Test the keyboard and pointing devices with the e-DiagTools diagnostics— see “Using the e- Diagtools Diagnostic Tests” on page 32.
If the embedded numeric keypad doesn’t work • To type numbers, make sure Num Lock is on. • Make sure the embedded Keypad Lock (Fn+F8) is on—or that you press and hold the Fn key to temporarily access the embedded keypad. 20 Troubleshooting and Diagnostics zt1100/xz100 and xt1000 Series Troubleshooting and Self-Repair Guide