Acer Aspire S3 Ms2346 Service Guide

CHAPTER 4
Troubleshooting 

4-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
General Information  . . . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . 4-3
Power On Issues . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
No Display Issues  . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
LCD Failure . . . . . .  . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . 4-7
Keyboard Failure . . ....

Troubleshooting4-3
Troubleshooting
Introduction0
This chapter contains information about troubleshooting common problems associated with 
the computer.
General Information0
The following procedures are a guide for troubleshooting computer problems. The step by 
step procedures are designed to  be performed as described.
NOTE:NOTE:
The diagnostic tests are intended for Acer products only. Non-Acer products, prototype 
cards, or modified options can give false errors and invalid system responses.
1. Obtain...

4-4Troubleshooting
Power On Issues0
If the system does not power on, perform the following, one at a time, to correct the problem. 
Do not replace a non-defective FRU.
Figure 4-1. Power On Issue
Computer Shuts Down Intermittently 0
If the system powers off at intervals, perform the following.
1. Makes sure the power cable is  properly connected to the computer and the electrical 
outlet.
2. Remove all extension cables between the computer and the outlet.
3. Remove all surge protectors between the co...

Troubleshooting4-5
No Display Issues0
If the Display does not work, perform the following, one at a time. Do not replace a 
non-defective FRU:
Figure 4-2. No Display Issue
No POST or Video 0
If the POST or video does not appear, perform the following one at a time.
1. Make sure that internal display is selected. Switch between the internal and external  display by pressing  Fn+F5. 
NOTE:NOTE :
This hotkey may not apply to all models. Refer to the computer’s user manual for the 
applicable hotkey...

4-6Troubleshooting
3. Drain stored power by removing the power cable and the battery pack. Hold the power 
button for 10 seconds.
4. Connect the power cable and reboot the computer.
5. Connect an external monitor to the computer and switch between the internal display and  the external display by pressing  Fn+F5.
6. If the POST or video appears on the external display only, refer to the “ LCD Failure” 
section on page 4-7.
7. Disconnect power and all external devices incl uding port replicators or...

Troubleshooting4-7
8. Run the Windows Memory Diagnostic from the operating system DVD and follow the on-screen prompts.
9. If the issue is still not resolved, refer to the  Online Support Information on page9-3
LCD Failure0
If the LCD fails, perform the following, one at  a time. Do not replace a non-defective FRU:
Figure 4-3. LCD Failure 

4-8Troubleshooting
Keyboard Failure0
If the Keyboard fails, perform the following, one at a time. Do not replace a non-defective 
FRU:
Figure 4-4. Keyboard Failure 

Troubleshooting4-9
Touchpad Failure0
If the Touchpad fails, perform the following, one at a time. Do not replace a non-defective 
FRU:
Figure 4-5. Touchpad Failure 

4-10Troubleshooting
Internal Speaker Failure0
If internal Speakers fail, perform the following, one at a time. Do not replace a non-defective 
FRU:
Figure 4-6. Internal Speaker Failure
Sound Problems 0
Perform the following, one at a time.
1. Boot 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...