Acer DT85 用户手册

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155

Devices

Keyboard and touchpad

The battery fuel gauge in Windows doesn’t 
go higher than 90%. 

• Remove the battery pack and let it cool for two hours.
• Refresh the battery (use only battery power until the notebook 

turns off, then charge the battery).

• Test or replace the battery pack.
• Test or replace the system board.

The system hangs intermittently.

• Reconnect the hard disk drive and optical drive.
• Check the hard disk connection to the system board.
• Test or replace the system board.

Symptom / Error

Action in Sequence

System configuration does not match the 
installed devices. 

• Run “Load Setup Defaults” using the BIOS Setup Utility, then 

reboot the notebook.

• Reconnect the hard disk drive and optical drive.

The external display does not work 
correctly.

• Press Fn+F4 repeatedly to switch between LCD, external 

display, and both displays.

• Test or replace the system board.

USB does not work correctly.

• Test or replace the USB board.
• Test or replace the system board.

Printer problems.

• Run the printer self-test.
• Reinstall the printer driver.
• Test or replace the printer cable.
• Test or replace the printer.
• Test or replace the system board.

Symptom / Error

Action in Sequence

The keyboard (one or more keys) does not 
work.

• Reconnect the keyboard cable.
• Test or replace the keyboard.
• Test or replace the system board.

The touchpad does not work.

• Reconnect the touchpad cable.
• Test or replace the touchpad board.
• Test or replace the system board.

If you cannot find a symptom or an error in this list and the problem 
remains, see 

Symptom / Error

Action in Sequence