Acer 4270 Index of Symptom-to-FRU Error Message, LCD-Related Symptoms, Indicator-Related Symptoms

Index of Symptom-to-FRU Error Message

LCD-Related Symptoms

Symptom / Error	Action in Sequence
LCD backlight doesn't work	First, plug a monitor to CRT port. Next, enter BIOS utility to running
	“Load Default Settings” then reboot the system.
	Reconnect the LCD connectors.
	Keyboard (if the brightness function key doesn't work).
	LCD cable
	LCD inverter
	LCD
	Main board
LCD is too dark	Enter BIOS Utility to execute “Load Setup Default Settings”, then
LCD brightness cannot be adjusted	reboot system.
	Reconnect the LCD connectors.
	Keyboard (if the brightness function key doesn't work).
	LCD cable
	LCD inverter
	LCD
	Main board
Unreadable LCD screen	Reconnect the LCD cable
Missing pels in characters	LCD cable
Abnormal screen	LCD
Wrong color displayed	Main board
LCD has extra horizontal or vertical lines
displayed.

Indicator-Related Symptoms

Symptom / Error	Action in Sequence
Indicator incorrectly remains off or on, but system	Main board
runs correctly
HDD/CD-ROM active indicators cannot work	HDD/CD-ROM drive
	Device driver
	Main board

Power-Related Symptoms

Symptom / Error	Action in Sequence
Power shuts down during operation	Power source (battery pack and power adapter). See “Power
	System Check” on page 95.
	Battery pack
	AC adapter
	See if the thermal module is overheat (Heat sink or fan).
	Main board
The system cannot power-on.	Power source (battery pack and power adapter). See “Power
	System Check” on page 95.
	Battery pack
	Power adapter
	CPU
	Main board
The system cannot power-off.	In Windows XP operating system, hold and press the power switch
	for more than 4 seconds. If the system can power off, then the main
	board is OK. Verify OS in the HDD.
	Main board

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