Acer Aspire 6935G Series Service Manual page 92

Peripheral-Related Symptoms
System configuration does not match the installed
devices.
External display does not work correctly.
USB does not work correctly.
Print problems.
Serial or parallel port device problems.
Keyboard/Touchpad-Related Symptoms
Keyboard (one or more keys) does not work.
Touchpad does not work.
Modem-Related Symptoms
Internal modem does not work correctly.
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined
Problems" on page 86.
84
Symptom / Error
Symptom / Error
Symptom / Error
Action in Sequence
Enter BIOS Setup Utility to execute "Load Default
Settings", then reboot system.
Reconnect hard disk/CD-ROM/diskette drives.
Press Fn+F5, LCD/CRT/Both display switching.
System board
System board
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
Ensure the "Serial Port" in the Devices
Configuration" of BIOS Setup Utility is set to
Enabled.
Device driver
Device cable
Device
System board
Action in Sequence
Reconnect the keyboard cable
Keyboard
System board
Reconnect touchpad cable
Touchpad board
System board
Action in Sequence
Modem phone port
modem combo board
System board
Chapter 4