Acer 4520 manual System Troubleshooting, Hardware Diagnostic Procedure

Chapter 4

System Troubleshooting

This chapter provides instructions on how to troubleshoot system hardware problems. If the problem can’t be resolved using the procedures described here, information for getting online technical assistance is also provided.

Hardware Diagnostic Procedure

IMPORTANT: The diagnostic tests described in this chapter are only intended to test Acer products. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.

1.Obtain as much detail as possible about the presented failure symptoms.

2.Verify the symptoms by attempting to re-create the failure through diagnostic tests or by repeating the same condition that precedes the symptoms.

3.Refer the table below to determine which corrective action to perform.

Problem	Symptom	Section to Refer to
Power failure	The power indicator does light up or	“Power System Check” on page 67
	stay lit.
POST failure	POST does not complete. No beep or	“POST Error Message” on page 69
	error codes issued.	“Undetermined Problems”
	POST detects an error and displayed	“POST Error Message” on page 69
	messages on screen.
Specific component	Dysfunctional component symptoms	“POST Error Message” on page 69
failure	(e.g. blurred LCD display).
Intermittent failure	Symptoms cannot be re-created	Use the customer-reported symptoms
		and go to the “POST Error Message”
		section on page 69.
		“Intermittent Problems” on page 80

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