Acer Aspire 4520 Service Manual

Also see for Aspire 4220: User guide

Contents

Acer Aspire 4520 Service Manual Manual pdf 75 page image

Chapter 4 69Use 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, ormodified 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 repeatingthe same operation.3. Use the following table with the verified symptom to determine which page to go to.Symptoms (Verified) Go ToPower failure (The power indicator does not goon or stay on).“Power System Check” on page 71POST does not complete. No beep or errorcodes are indicated.“Power-On Self-Test (POST) Error Message” onpage 74“Undetermined Problems” on page 86POST detects an error and displayed messageson screen.“Error Message List” on page 75Other symptoms (i.e. LCD display problems orothers).“Power-On Self-Test (POST) Error Message” onpage 74Symptoms cannot be re-created (intermittentproblems).Use the customer-reported symptoms and go to“Power-On Self-Test (POST) Error Message” onpage 74“Intermittent Problems” on page 85“Undetermined Problems” on page 86TroubleshootingChapter 4