146
Chapter 4
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:
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.
Start
Check M/B SPK
cable
Re-assemble the
SPK cable to M/B
NG
OK
Swap M/B
Summary of Contents for ASPIRE 7745
Page 6: ...VI ...
Page 10: ...X Table of Contents ...
Page 40: ...30 Chapter 1 ...
Page 56: ...46 Chapter 2 ...
Page 68: ...58 Chapter 3 5 Pull the WLAN module out and away ...
Page 73: ...Chapter 3 63 5 Remove the ODD bracket 6 Pry the ODD bezel off of the ODD module ...
Page 83: ...Chapter 3 73 5 Detach the Bluetooth module cable from the module ...
Page 91: ...Chapter 3 81 4 Lift the thermal module away from the main board ...
Page 96: ...86 Chapter 3 4 Unlock and disconnect the switch board FFC ...
Page 101: ...Chapter 3 91 4 Remove the bezel from the LCD module ...
Page 108: ...98 Chapter 3 5 Pry the right antenna from the casing ...
Page 111: ...Chapter 3 101 3 Lay the cables around the module edge ...
Page 115: ...Chapter 3 105 10 Place the LVDS cable into cable guides ...
Page 118: ...108 Chapter 3 4 Replace the two 2 bezel screws ...
Page 129: ...Chapter 3 119 4 Connect the Bluetooth module cable to the main board ...
Page 136: ...126 Chapter 3 6 Connect and lock the Power board FFC ...
Page 143: ...Chapter 3 133 4 Grasp the tab and slide the HDD firmly into the docking connector ...
Page 145: ...Chapter 3 135 4 Push the ODD completely into the bay until flush with the lower cover ...
Page 148: ...138 Chapter 3 ...
Page 166: ...156 Chapter 4 ...
Page 288: ...278 Appendix B ...
Page 290: ...280 ...