Acer Extensa 500, Service Manual

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Chapter 4 73
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 75.
POST does not complete. No beep or
error codes are indicated. “Error Symptom-to-FRU Index” on
page 78.
“Undetermined Problems” on page 86
POST detects an error and displayed
messages on screen. “Error Messages List” on page 78
The diagnostic test detected an error
and displayed a FRU code. See “Running PQA Diagnostics
Program.” on page 45
Other symptoms (i.e. LCD display
problems or others). “Error Symptom-to-FRU Index” on
page 78
Symptoms cannot be re-created
(intermittent problems). Use the customer-reported symptoms
and go to “Error Symptom-to-FRU
Index” on page 78
“Intermittent Problems” on page 86
“Undetermined Problems” on page 86
Troubleshooting
Chapter 4