Acer Aspire 7750Z Acer Aspire 7750, 7750G, 7750Z Notebook Service Guide - Page 134

Microphone Failure 0 If internal or external Microphones fail, perform the following. Start OK Check M/B Mic. cable Check MIC wire of LCD module NG Re assemble the MIC cable to M/B OK NG Swap MIC wire of LCD module Swap M/B Figure 4-7. Microphone Failure 1. Check that the microphone is enabled. Navigate to Start Control Panel Sound and select the Recording tab. 2. Right click on the Recording tab and select Show Disabled Devices (clear by default). The microphone appears on the Recording tab. 3. Right click on the microphone and select Enable. 4. Select the microphone then click Properties. Select the Levels tab. 5. Increase the volume to the maximum setting and click OK. 6. Test the microphone hardware: a. Select the microphone and click Configure. b. Select Set up microphone. c. Select the microphone type from the list and click Next. d. Follow the on-screen prompts to complete the test. 7. If the Issue is still not resolved, refer to Online Support Information. 4-12 Troubleshooting