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80 Chapter 4
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined
Problems” on page 82.
Peripheral-Related Symptoms
Symptom / Error Action in Sequence
System configuration does not match the
installed devices.
Enter BIOS Setup Utility to execute “Load Setup defaults”, then
reboot system.
Reconnect hard disk/CD-ROM/diskette drives.
External display does not work correctly. See “System Diagnostic Diskette” on page 46
See if there is an error beep. If there is an erro beep, then change
main board.
Power off. Then check if RAM CPU BIOS are well-connected.
Press Fn+F5 three times slowly
LCD FPC
LCD inverter
LCD
USB does not work correctly USB device cable is firmly connected into the USB ports. Test one
USB port each time.
USB socket is firmly secured to the main board.
Main board
Print problems. Ensure the “Parallel Port” in the “System Devices” of BIOS Setup
Utility is set to Enabled.
Onboard Devices Configuration
Run parallel port test
Printer driver
Printer cable
Printer
Main board
Keyboard/Touchpad-Related Symptoms
Symptom / Error Action in Sequence
Keyboard (one or more keys) does not work. Reconnect the keyboard cable.
Keyboard
Main board
Touchpad does not work. Reconnect touch pad cable. Modem port is secured to the main
board
Touch pad FPC
Audio/Touch pad board
Main board
Modem-Related Symptoms
Symptom / Error Action in Sequence
Internal modem does not work correctly. Ensure the telephone cable is firmly plugged into the telephone wall
socket and the modem port of the computer.
Modem phone port is secured to the main board.
modem combo board
Main board