Acer 4740Z Symptom-to-FRU Error Messages, LCD-Related Symptoms Symptom / Error Action in Sequence

Symptom-to-FRU Error Messages

LCD-Related Symptoms

	Symptom / Error	Action in Sequence
 LCD backlight doesn't work		 Run “Load Setup Defaults” using the BIOS Setup Utility,
 LCD is too dark		then reboot the system.
 LCD brightness cannot be adjusted		 Reconnect the LCD connector.
 LCD contrast cannot be adjusted		 Test or replace the keyboard (if contrast and brightness
		function key doesn’t work).
		 Test or replace the LCD cable.
		 Test or replace the LCD.
		 Test or replace the mainboard.
	Unreadable LCD screen	 Reconnect the LCD connector.
 Missing pels in characters		 Test or replace the LCD cable.
	Abnormal screen	 Test or replace the LCD.
	Wrong color displayed	 Test or replace the mainboard.
LCD has extra horizontal or vertical lines		 Test or replace the LCD cable.
displayed.		 Test or replace the LCD.
		 Test or replace the mainboard.
Power-Related Symptoms
	Symptom / Error	Action in Sequence
System shuts down during operation		 Test the power source (battery pack and power adapter).
		See “Power System Check” on page 67.
		 Test or replace the battery pack.
		 Test or replace the power adapter.
		 Test or replace the mainboard.
System doesn’t power-on.		 Test the power source (battery pack and power adapter).
		See “Power System Check” on page 67.
		 Test or replace the battery pack.
		 Test or replace the power adapter.
		 Test or replace the mainboard.
System doesn’t turn off.		 Test the power source (battery pack and power adapter).
		See “Power System Check” on page 67.
		 Press and hold the power button for more than 4 secs.
		 Test or replace the mainboard.
The battery can’t be charged		 Test the battery pack. See “Check the Battery Pack” on
		page 68.
		 Test or replace the battery pack.
		 Test or replace the mainboard.
Memory-Related Symptoms
	Symptom / Error	Action in Sequence
Memory count (size) appears different from		 Run “Load Setup Defaults” using the BIOS Setup Utility,
actual size.		then reboot the system.
		 Test or replace the SO-DIMM.
		 Test or replace the mainboard.

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