Acer Aspire X1920 Acer Aspire X1920 Desktop Service Guide - Page 69

Undetermined Problems NOTE • Verify that all attached devices are supported by the computer. • Verify that the power supply being used at the time of the failure is operating correctly. (See "Power System Check" on page 45) Follow the procedures below to isolate the failing FRU. Do not isolate non-defective FRU. 1. Power off the computer. 2. Visually check them for damage. If any problems are found, replace the FRU. 3. Remove or disconnect all of the following devices: • Non-Acer devices • Printer, mouse, and other external devices • Hard disk drive • DIMM • CD/DVD-ROM drive • Expansion boards 4. Power on the computer. 5. Determine if the problem has been resolved. 6. If the problem does not recur, reconnect the removed devices one at a time until you find the failed FRU. If the problem persists, replace the mainboard, and then LCD assembly (one at a time). Do not replace a nondefective FRU. Aspire AX1920 Service Guide 61