Acer 7730A manual 143, No-beep error messages, No-beep Error Messages FRU/Action in Sequence

No-beep error messages

No-beep Error Messages	FRU/Action in Sequence
No beep, power-on indicator turns off	• Test the power source (battery pack and power
and LCD is blank.	adapter). See “Testing the power system” on page 138.
	• Make sure that every connector is connected tightly
	and correctly.
	• Reconnect the SO-DIMM.
	• Test or replace the LED board.
	• Test or replace the system board.
No beep, power-on indicator turns on	• Test the power source (battery pack and power
and LCD is blank.	adapter). See “Testing the power system” on page 138.
	• Reconnect the LCD connector
	• Check the hard disk drive.
	• Check the LCD inverter ID.
	• Check the LCD cable.
	• Test or replace the LCD inverter.
	• Test or replace the LCD.
	• Test or replace the system board.
No beep, power-on indicator turns on	• Reconnect the LCD connectors.
and LCD is blank. But you can see POST	• Check the LCD inverter ID.
on an external CRT.	• Check the LCD cable.
	• Test or replace the LCD inverter.
	• Test or replace the LCD.
	• Test or replace the system board.
No beep, power-on indicator turns on	• Make sure that every connector is connected tightly
and a blinking cursor shown on LCD	and correctly.
during POST.	• Test or replace the system board.
No beep during POST but system runs	• Test or replace the speaker.
correctly.	• Test or replace the system board.

Chapter 4: Troubleshooting 143