Acer Aspire 5650 Service Manual page 94

Power Management-Related Symptoms
Symptom / Error
Battery fuel gauge in Windows doesn't go higher
than 90%.
System hangs intermittently.
Peripheral-Related Symptoms
Symptom / Error
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
Symptom / Error
Keyboard (one or more keys) does not work.
Touchpad does not work.
Modem-Related Symptoms
Symptom / Error
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 90.
88
Action in Sequence
Remove battery pack and let it cool for 2 hours.
Refresh battery (continue use battery until power off, then charge
battery).
Battery pack
System board
Reconnect hard disk/CD-ROM drives.
Hard disk connection board
System board
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