Internal Speaker Failure - Acer ASPIRE E1-521 Service Manual

Internal Speaker Failure

If the internal speakers fail, perform the following:
Sound Problems
Perform the following:
Boot the computer.
1.
Navigate to Start > Control Panel > System and Maintenance > System > Device Manager.
2.
Check the Device Manager to determine that:
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If updated recently, roll back the audio driver to the previous version.
3.
Remove and reinstall the audio driver.
4.
Make sure that all volume controls are set mid range:
5.
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Start
Check M/B
SPK cable
Check Logic
lower
OK
Swap M/B
Figure 4:6. Internal Speaker Failure
0
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
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.
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OK
NG
Re-assemble the
SPK cable to M/B
OK
NG
Swap Logic lower
Troubleshooting