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Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / Error
LCD backlight doesn't work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted
Unreadable LCD screen
Missing pels in characters
Abnormal screen
Wrong color displayed
LCD has extra horizontal or vertical lines displayed.
Action in Sequence
Enter BIOS Utility to execute “Load Setup Default Settings”, then reboot system.
Reconnect the LCD connectors.
Keyboard (if contrast and brightness function key doesn't work).
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
Reconnect the LCD connector
LCD inverter ID
LCD cable
LCD inverter
LCD
System board
LCD inverter ID
LCD inverter
LCD cable
LCD
System board
Indicator-Related Symptoms
Symptom / Error
Indicator incorrectly remains off or on, but system runs correctly
Action in Sequence
Reconnect the inverter board
Inverter board
System board
Power-Related Symptoms
Symptom / Error
Power shuts down during operation
The system doesn’t power-on.
The system doesn’t power-off.
Action in Sequence
Power source (battery pack and power adapter). See “Power
Battery pack
Power adapter
Hard drive & battery connection board
System board
Power source (battery pack and power adapter). See “Power
Battery pack
Power adapter
Hard drive & battery connection board
System board
Power source (battery pack and power adapter). See “Power
Hold and press the power switch for more than 4 seconds.
System board
Chapter 4 78
79
Power-Related Symptoms
Symptom / Error
Battery can’t be charged
Action in Sequence
See “Check the Battery Pack” on page 72.
Battery pack
System board
PCMCIA-Related Symptoms
Symptom / Error
System cannot detect the PC Card (PCMCIA) PCMCIA slot assembly
System board
PCMCIA slot assembly
Action in Sequence
PCMCIA slot pin is damaged.
Memory-Related Symptoms
Symptom / Error
Memory count (size) appears different from actual size.
Action in Sequence
Enter BIOS Setup Utility to execute “Load Default Settings, then reboot system.
DIMM
System board
Speaker-Related Symptoms
Symptom / Error
In Windows, multimedia programs, no sound comes from the computer.
Audio driver
Speaker
System board
Internal speakers make noise or emit no sound.
Speaker
System board
Action in Sequence
Power Management-Related Symptoms
Symptom / Error
The system will not enter hibernation
The system doesn't enter hibernation mode and four short beeps every minute.
The system doesn’t enter standby mode after closing the LCD
The system doesn't resume from hibernation mode.
The system doesn't resume from standby mode after opening the LCD.
Action in Sequence
Keyboard (if control is from the keyboard)
Hard disk drive
System board
See “Hibernation Mode” on page 34.
Press Fn+
o
and see if the computer enters hibernation mode.
Touchpad
Keyboard
Hard disk connection board
Hard disk drive
System board
See “Hibernation Mode” on page 34.
LCD cover switch
System board
See “Hibernation Mode” on page 34.
Hard disk connection board
Hard disk drive
System board
See “Hibernation Mode” on page 34.
LCD cover switch
System board
Chapter 4
Power Management-Related Symptoms
Symptom / Error
Battery fuel gauge in Windows doesn’t go higher than 90%.
System hangs intermittently.
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
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.
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
Keyboard/Touchpad-Related Symptoms
Symptom / Error
Keyboard (one or more keys) does not work.
Touchpad does not work.
Action in Sequence
Reconnect the keyboard cable.
Keyboard
System board
Reconnect touchpad cable.
Touchpad board
System board
Modem-Related Symptoms
Symptom / Error
Internal modem does not work correctly.
Modem phone port modem combo board
System board
Action in Sequence
Chapter 4 80
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