Acer Extensa 500 Instruction De Maintenance

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Chapter 4
85
Peripheral-Related Symptoms
Symptom / Error
Action in Sequence
System configuration does 
not match the installed 
devices. 
Enter BIOS Setup Utility to execute “Load Default 
Settings”, then reboot system.
Reconnect hard disk/CD-ROM/diskette drives.
External display does not 
work correctly.
Press Fn+F5, LCD/CRT/Both display switching
System board
USB does not work 
correctly
System board
Print problems.
Ensure the “Parallel Port” in the “Onboard 
Devices Configuration” of BIOS Setup Utility is set 
to Enabled.
Onboard Devices Configuration
Run printer self-test.
Printer driver
Printer cable
Printer
System Board
Serial or parallel port device 
problems.
Ensure the “Serial Port” in the Devices 
Configuration” of BIOS Setup Utility is set to 
Enabled.
Device driver
Device cable
Device
System board
Keyboard/Touchpad-Related Symptoms
Symptom / Error
Action in Sequence
Keyboard (one or more 
keys) does not work.
Reconnect the keyboard cable.
Keyboard
System board
Touchpad does not work.
Reconnect touchpad cable.
Touchpad board
System board