Acer Aspire 1420P Aspire 1420P and 1820PT Service Guide - Page 161

8. Remove and recently installed hardware or software. 9. Restore system and file settings from a known good date using System Restore. If the issue is not fixed, repeat the preceding steps and select an earlier time and date. 10. Reinstall the Operating System. 11. If the Issue is still not resolved, see "Online Support Information" on page 165. Internal Microphone Failure If the internal Microphone fails, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs: Start OK Check M/B Mic. cable OK Check MIC wire of LCD module Re-assemble the NG MIC cable to M/B OK Swap MIC wire of NG LCD module Swap M/B Microphone Problems If internal or external Microphones do no operate correctly, perform the following actions one at a time to correct the problem. 1. Check that the microphone is enabled. Navigate to Start´ Control Panel´ Hardware and Sound´ Sound and select the Recording tab. 2. Right-click on the Recording tab and select Show Disabled Devices (clear by default). 3. The microphone appears on the Recording tab. 4. Right-click on the microphone and select Enable. 5. Select the microphone then click Properties. Select the Levels tab. 6. Increase the volume to the maximum setting and click OK. 7. Test the microphone hardware: a. Select the microphone and click Configure. b. Select Set up microphone. Chapter 4 151