Acer Aspire Z1100 Acer Aspire Z1100 Desktop Service Guide - Page 135

Component Failure 0 If a component fails, follow the flowchart below: Component Failure Touch Screen Failure Wireless LAN Failure Speaker Failure Camera Failure ODD Failure Component pass Test component on test bed Replace Mainboard Component fail Replace module according to procedure Change cables Yes Ok Close Cable connected properly? No Close Figure 4-4. Component Failure Sound Problems 0 Perform the following: 1. Boot the computer. 2. Navigate to Start Control Panel System and Maintenance System Device Manager. Check the Device Manager to determine that: The device is properly installed There are no red Xs or yellow exclamation marks There are no device conflicts No hardware is listed under Other Devices 3. If updated recently, roll back the audio driver to the previous version. 4. Remove and reinstall the audio driver. 5. Make sure that all volume controls are set mid range: Click the volume icon on the taskbar Drag the slider to 50. Confirm that the volume is not muted. Click Mixer to verify that other audio applications are set to 50 and not muted. 6. Navigate to Start Control Panel Hardware and Sound Sound. Confirm that Speakers are selected as the default audio device (green check mark). Troubleshooting 4-9