Personal Computer User Manual
Table Of Contents
- System Specifications
- System Utilities
- Machine Disassembly and Replacement
- Disassembly Requirements
- General Information
- External Module Disassembly Process
- Main Unit Disassembly Process
- Main Unit Disassembly Flowchart
- Removing the Switch Cover
- Removing the Keyboard
- Removing the Antenna
- Removing the LCD Module
- Removing the Upper Cover
- Removing the Touch Pad Bracket
- Removing the Finger Print Reader
- Removing the Launch Board
- Removing the Speaker Module
- Removing the Switch Board
- Removing the Touch Pad Board
- Removing the I/O Board
- Removing the Bluetooth module
- Removing the Modem Module
- Removing the Main Board
- Removing the Thermal Module
- Removing the CPU
- Removing the CPU Fan
- Removing the HDMI Module
- LCD Module Disassembly Process
- LCD Module Reassembly Procedure
- Main Module Reassembly Procedure
- Replacing the CPU
- Replacing the Thermal Module
- Replacing the CPU Fan Module
- Replacing the HDMI Module
- Replacing the Mainboard
- Replacing the I/O Board
- Replacing the Bluetooth Board
- Replacing the Modem Module
- Replacing the Finger Print Reader
- Replacing the Touch Pad Bracket
- Replacing the Launch Board
- Replacing the Switch Board
- Replacing the Antenna Cables
- Replacing the Speaker Module
- Replacing the Keyboard
- Replacing the Switch Cover
- Replacing the WLAN Module
- Replacing the Hard Disk Drive Module
- Replacing the DIMM Modules
- Replacing the ODD Module
- Replacing the Lower Covers
- Replacing the Express and SD Card Trays
- Troubleshooting
- Common Problems
- Power On Issue
- No Display Issue
- Random Loss of BIOS Settings
- LCD Failure
- Built-In Keyboard Failure
- Touchpad Failure
- Internal Speaker Failure
- Internal Microphone Failure
- HDD Not Operating Correctly
- ODD Failure
- Modem Function Failure
- Wireless Function Failure
- EasyTouch Button Failure
- Thermal Unit Failure
- External Mouse Failure
- Other Failures
- Intermittent Problems
- Undetermined Problems
- POST Codes Tables
- Common Problems
- Jumper and Connector Locations
- FRU (Field Replaceable Unit) List
- Model Definition and Configuration
- Test Compatible Components
- Online Support Information
- Index
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Chapter 4 135
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:
• 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. Roll back the audio driver to the previous version, if updated recently.
4. Remove and reinstall the audio driver.
5. Ensure that all volume controls are set mid range:
a. Click the volume icon on the taskbar and drag the slider to 50. Ensure that the volume is not muted.
b. 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. Ensure that Speakers are selected
as the default audio device (green check mark).
NOTE: If Speakers does not show, right-click on the Playback tab and select Show Disabled Devices
(clear by default).
7. Select Speakers and click Configure to start Speaker Setup. Follow the onscreen prompts to configure
the speakers.
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 185.