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Chapter 4 Troubleshooting Use the following procedure as a guide for computer problems. NOTE: The diagnostic tests are intended to test this model. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses. 1. Duplicate symptom and obtain the failing symptoms in as much detail as possible. 2. Distinguish symptom. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation. 3. Disassemble and assemble the unit without any power sources. 4. If any problem occurs, you can perform visual inspection before you fellow this chapter's instructions. You can check the following: power cords are properly connected and secured; there are no obvious shorts or opens; there are no obviously burned or heated components; all components appear normal. 5. 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 "Power System Check" on page 65. on or stay on.) POST does not complete. No beep or error "Power-On Self-Test (POST) Error Message" on codes are indicated. page 67 "Undetermined Problems" on page 79 POST detects an error and displayed messages "Error Message List" on page 68 on screen. Other symptoms (i.e. LCD display problems or "Power-On Self-Test (POST) Error Message" on others). page 67 Symptoms cannot be re-created (intermittent Use the customer-reported symptoms and go to problems). "Power-On Self-Test (POST) Error Message" on page 67 "Intermittent Problems" on page 78 "Undetermined Problems" on page 79 Chapter 4 63 System Check Procedures External Diskette Drive Check If an error occurs with the internal diskette drive, reconnect the diskette connector on the system board. If the error still remains: 1. Reconnect the external diskette drive/DVD-ROM module. 2. Replace the external diskette drive/CD-ROM module. 3. Replace the main board. External CD-ROM Drive Check Do the following to isolate the problem to a controller, drive, or CD-ROM. Make sure that the CD-ROM does not have any label attached to it. The label can cause damage to the drive or can cause the drive to fail. Do the following to select the test device: 1. Boot from