Acer 8940 manual Internal Speaker Failure, Okok

Internal Speaker Failure

If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace non-defective FRUs:

Start

OK

Check M/B SPK	NG	Re-assemble the
		SPK cable to M/B
cable

OKOK

Check Logic	NG	Swap Logic
Upper/Logic		lower/Logic upper
upper

Swap M/B

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).

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