Peripheral-Related Symptoms

Symptom / Error

Action in Sequence

System configuration does not match the installed

Enter BIOS Setup Utility to execute “Load Default

devices.

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

 

 

Modem-Related Symptoms

Symptom / Error

Action in Sequence

Internal modem does not work correctly.

Modem phone port

 

modem combo board

 

System board

 

 

NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined Problems” on page 86.

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Chapter 4

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Acer Aspire 6935G manual Peripheral-Related Symptoms, Keyboard/Touchpad-Related Symptoms, Modem-Related Symptoms