Acer 4520 I/O-related Symptoms

Chapter 4 79
I/O-related Symptoms
Symptom / Error Action in Sequence
System configuration values does not
match the installed devices. Run the Setup Utility, then press F9 to load the system defaults.
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 Run printer self-test.
Printer driver
Printer cable
Printer
System board
Keyboard (one or more keys) does not
work. Reconnect the keyboard ca ble.
Keyboard
System board
Touchpad does not work. Reconnect the touchpad cable.
Touchpad board
System board
Internal modem does not work correctly. Modem port
Modem board
System board
Acer TM 4520 SG.book Page 79 Friday, June 22, 2007 5:43 PM