Acer 5670, 4270, 4670 manual Troubleshooting

Chapter 4

Troubleshooting

Use the following procedure as a guide for computer problems.

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

1.Duplicate symptom and obtain the failing symptoms in as much detail as possible.

2.Distinguish symptom. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation.

3.Disassemble and assemble the unit without any power sources.

4.If any problem occurs, you can perform visual inspection before you fellow this chapter’s instructions. You can check the following:

power cords are properly connected and secured; there are no obvious shorts or opens;

there are no obviously burned or heated components; all components appear normal.

5.Use the following table with the verified symptom to determine which page to go to.

Symptoms (Verified)	Go To
Power failure. (The power indicator does not go	“Power System Check” on page 95.
on or stay on.)
POST does not complete. No beep or error	“Power-On Self-Test (POST) Error Message” on
codes are indicated.	page 97
	“Undetermined Problems” on page 109
POST detects an error and displayed messages	“Error Message List” on page 98
on screen.
Other symptoms (i.e. LCD display problems or	“Power-On Self-Test (POST) Error Message” on
others).	page 97
Symptoms cannot be re-created (intermittent	Use the customer-reported symptoms and go to
problems).	“Power-On Self-Test (POST) Error Message” on
	page 97
	“Intermittent Problems” on page 108
	“Undetermined Problems” on page 109

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