Acer AO722 Service Guide - Page 95

TouchPad Failure If the TouchPad doesn't work, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Internal Speaker Failure If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs: Sound Problems If sound problems are experienced, perform the following actions one at a time to correct the problem. 1. Reboot the computer. 2. Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager. Check the Device Manager to determine that: Chapter 4 85