Chapter 4
143
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 195.
Microphone Problems
If internal or external
Microphones
do no operate correctly, perform the following actions one at a time to
correct the problem.
1.
Check that the microphone is enabled. Navigate to
Start
´
Control
Panel
´
Hardware
and
Sound
´
Sound
and select the
Recording
tab.
2.
Right-click on the
Recording
tab and select
Show
Disabled
Devices
(clear by default).
3.
The microphone appears on the
Recording
tab.
4.
Right-click on the microphone and select
Enable
.
5.
Select the microphone then click
Properties
. Select the
Levels
tab.
6.
Increase the volume to the maximum setting and click
OK
.
7.
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 onscreen prompts to complete the test.
8.
If the Issue is still not resolved, see “Online Support Information” on page 195.
Summary of Contents for ASPIRE 5251
Page 6: ...VI...
Page 10: ...X Table of Contents...
Page 34: ...24 Chapter 1...
Page 52: ...42 Chapter 2...
Page 76: ...66 Chapter 3 5 Lift the Speaker clear of the Upper Cover...
Page 78: ...68 Chapter 3 5 Lift the Right Speaker Module clear of the device...
Page 84: ...74 Chapter 3 5 Lift the USB board clear of the device...
Page 90: ...80 Chapter 3 11 Disconnect the Bluetooth to mainboard cable...
Page 92: ...82 Chapter 3 4 Carefully lift the Thermal Module clear of the Mainboard...
Page 103: ...Chapter 3 93 7 Disconnect the LVDS cable from the panel...
Page 105: ...Chapter 3 95 5 Lift the microphone set and cable clear of the LCD cover...
Page 121: ...Chapter 3 111 5 Connect the fan cable...
Page 124: ...114 Chapter 3 6 Connect the LVDS cable to the mainboard 7 Connect the microphone cable...
Page 127: ...Chapter 3 117 4 Connect the USB cable to the mainboard and lock the connector...
Page 130: ...120 Chapter 3 4 Replace the FFC and press down as indicated to secure it to the Upper Cover...
Page 146: ...136 Chapter 3...
Page 175: ...Chapter 6 165 Aspire 5251 5551G 5551 FRU List...
Page 176: ...166 Chapter 6 Screw List...
Page 177: ...Chapter 6 167...
Page 206: ...196 Appendix C...
Page 210: ...200...
