Acer 5520G, Service Manual

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Chapter 4 86
Use the following procedure as a guide for computer problems.
NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or
modified options can give false errors and invalid system responses.
1. Obtain the failing symptoms in as much detail as possible.
2. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating
the same operation.
3. 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
on or stay on). “Power System Check” on page 88
POST does not complete. No beep or error
codes are indicated. “Power-On Self-Test (POST) Error Message” on
page 91
“Undetermined Problems” on page 103
POST detects an error and displayed messages
on screen. “Error Message List” on page 92
Other symptoms (i.e. LCD display problems or
others). “Power-On Self-Test (POST) Error Message” on
page 91
Symptoms cannot be re-created (intermittent
problems). Use the customer-reported symptoms and go to
“Power-On Self-Test (POST) Error Message” on
page 91
“Intermittent Problems” on page 102
“Undetermined Problems” on page 103
Troubleshooting
Chapter 4