Acer 7730A manual Symptom-to-FRU error messages, 148, Indicator, Power

Symptom-to-FRU error messages

LCD

Symptom / Error	Action in Sequence
• The LCD backlight doesn't work.	• Run “Load Setup Defaults” using the BIOS Setup
• The LCD is too dark.	Utility, then reboot the notebook.
• The LCD brightness cannot be	• Reconnect the LCD connectors.
adjusted.	• Test or replace the keyboard (if contrast and brightness
• The LCD contrast cannot be adjusted.	function key doesn't work).
	• Check the LCD inverter ID.
	• Test or replace the LCD cable.
	• Test or replace the LCD inverter.
	• Test or replace the LCD.
	• Test or replace the system board.
• The LCD screen is unreadable.	• Reconnect the LCD connector.
• Missing pels in characters.	• Check the LCD inverter ID.
• The screen appears abnormal.	• Test or replace the LCD cable.
• The wrong color is displayed.	• Test or replace the LCD inverter.
	• Test or replace the LCD.
	• Test or replace the system board.
The LCD is displaying extra horizontal or	• Check the LCD inverter ID.
vertical lines.	• Test or replace the LCD cable.
	• Test or replace the LCD inverter.
	• Test or replace the LCD.
	• Test or replace the system board.

Indicator

	Symptom / Error	Action in Sequence
	Indicator incorrectly remains off or on,	• Reconnect the inverter board.
	but system runs correctly. <Athena: What	• Test or replace the LCD inverter.
	indicator? What relationship does it have	• Test or replace the system board.
	to the inverter?>
Power

Symptom / Error	Action in Sequence
The notebook shuts down during	• Test the power source (battery pack and power
operation.	adapter). See “Testing the power system” on page 138.
	• Replace the battery pack.
	• Test or replace the power adapter.
	• Test or replace the system board.
The notebook doesn’t turn on.	• Test the power source (battery pack and power
	adapter). See “Testing the power system” on page 138.
	• Replace the battery pack.
	• Test or replace the power adapter.
	• Test or replace the system board.

148 Chapter 4: Troubleshooting