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Troubleshooting
4-11
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
. Confirm that
Speakers are selected as the default audio device (green check mark).
NOTE:
NOTE
:
If Speakers do 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 on-screen prompts
to configure the speakers.
8. Remove any recently installed hardware or software.
9. Restore system and file settings from a known good date using System Restore.
10. If the issue is remains, repeat step 9, selecting an earlier time and date.
11. Reinstall the Operating System.
12. Connect a set of earphones or external speakers. If these function correctly, the internal
speaker or I/O board may be defective. If they do not function correctly, the mother board
may be defective or damaged.
13. If the Issue is still not resolved, refer to
Online Support Information
.
Summary of Contents for TravelMate P453-M
Page 1: ...Acer TravelMate P453 SERVICEGUIDE ...
Page 4: ...iv ...
Page 9: ...ix Introduction 8 3 ...
Page 10: ...x ...
Page 11: ...CHAPTER 1 Hardware Specifications ...
Page 14: ...1 4 ...
Page 57: ...CHAPTER 2 System Utilities ...
Page 67: ...System Utilities 2 11 Figure 2 9 Setup Warning ...
Page 85: ...System Utilities 2 29 Figure 2 37 GU bat ...
Page 88: ...2 32 System Utilities ...
Page 89: ...CHAPTER 3 Machine Maintenance ...
Page 92: ...3 4 ...
Page 99: ...3 11 3 Lift the bottom edge of battery bar first to remove the battery Figure 3 6 Battery ...
Page 101: ...3 13 3 Lift to remove the main door Figure 3 9 Main Door ...
Page 104: ...3 16 5 Remove the HDD bracket Figure 3 14 HDD Bracket ...
Page 107: ...3 19 Figure 3 19 ODD Bracket ...
Page 142: ...3 54 Figure 3 78 LCD Hinge CAUTION Distinguish the left and right hinge before assembling ...
Page 147: ...3 59 Figure 3 86 LCD Bezel ...
Page 158: ...3 70 3 Connect the cable from IO board to motherboard Figure 3 103 IO Board ...
Page 164: ...3 76 Figure 3 113 Top Case Module ...
Page 166: ...3 78 3 Lock 6 latches Esc F4 F8 F12 Del End around the keyboard Figure 3 116 Keyboard ...
Page 178: ...3 90 ...
Page 179: ...CHAPTER 4 Troubleshooting ...
Page 206: ...4 28 Troubleshooting ...
Page 207: ...CHAPTER 5 Jumper and Connector Locations ...
Page 215: ...CHAPTER 6 FRU List ...
Page 216: ...6 2 TravelMate P453 Exploded Diagrams 6 4 Main Assembly 6 4 FRU List 6 6 ...
Page 230: ...6 16 FRU Field Replaceable Unit List ...
Page 231: ...CHAPTER 7 Test Compatible Components ...
Page 232: ...8 2 Microsoft Windows 7 Environment Test 7 4 TravelMate P453 7 4 ...
Page 240: ...7 10 Test Compatible Components ...
Page 241: ...CHAPTER 8 Online Support Information ...
Page 242: ...9 2 Introduction 8 3 ...
Page 244: ...8 4 Online Support Information ...