Acer Aspire X3990 Acer Aspire X3990 Desktop Service Guide - Page 77
System Troubleshooting, Hardware Diagnostic Procedure - test
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Chapter 4 System Troubleshooting This chapter provides instructions on how to troubleshoot system hardware problems. Hardware Diagnostic Procedure IMPORTANT:The diagnostic tests described in this chapter are only intended to test 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 recreate the failure by running the diagnostic tests or repeating thesame operation. 3. Refer to "Power System check" on page 70 and "Beep Codes" on page 71 to determine which corrective action to perform. Chapter 4 69