Acer LX.AUA0X.343, Service Manual, Page: 109 / 156

Chapter 4 97
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 99.
POST does not complete. No beep or error
codes are indicated. “Power-On Self-Test (POST) Error
Message” on page 102
“Undetermined Problems” on page 116
POST detects an error and displayed
messages on screen. “Error Message List” on page 103
Other symptoms (i.e. LCD display problems
or others). “Power-On Self-Test (POST) Error
Message” on page 102
Symptoms cannot be re-created
(intermittent problems). Use the customer-reported symptoms and
go to “Power-On Self-Test (POST) Error
Message” on page 102
“Intermittent Problems” on page 115
“Undetermined Problems” on page 116
Troubleshooting
Chapter 4