Acer Extensa 7620Z TravelMate 7720 / 7320 and Extensa 7620 Service Guide - Page 115

Chapter 4 Troubleshooting 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 107. POST does not complete. No beep or error "Power-On Self-Test (POST) Error codes are indicated. Message" on page 110 "Undetermined Problems" on page 124 POST detects an error and displayed messages on screen. "Error Message List" on page 111 Other symptoms (i.e. LCD display problems "Power-On Self-Test (POST) Error or others). Message" on page 110 Symptoms cannot be re-created (intermittent problems). Use the customer-reported symptoms and go to "Power-On Self-Test (POST) Error Message" on page 110 "Intermittent Problems" on page 123 "Undetermined Problems" on page 124 Chapter 4 105