Acer Aspire 5940g Service Guide

Chapter 3131
Replacing the DIMM Modules
Replacing the Hard Disk Drive Module
1.Insert the DIMM Module in place. 2.Press down to lock the DIMM module in place.
1. Place the HDD in the HDD carrier. 2.Replace the four screws (two each side) to secure 
the carrier.
3. Insert the HDD SATA interface connector as 
shown. 4.
Place the HDD into the chassis as shown to 
engage the interface. 

132Chapter 3
Replacing the ODD Module
1.With the ODD tray in the eject position, replace the 
ODD bezel on the new ODD Module. 2.
Secure ODD bracket with two screws.
3. Slide the module in to the chassis and press until 
the module is flush with the chassis. 4.
Replace the single screw to secure the Module. 

Chapter 3133
Replacing the Lower Covers
Replacing the SD Dummy Card
Push the SD Dummy into the slot until an audible click indicates that the card is correctly inserted.
1.
Replace the Memory Cover back edge first as 
shown. 2.
Replace the memory/HDD cover back edge first as 
shown.
IMPORTANT:  Ensure that the all the securing tabs are correctly located in the casing.
3. Secure the four captive screws.
HDD 
Cover
WLAN 
Cover 

134Chapter 3
Replacing the PCI Express Dummy Card
Push the Express Dummy into the slot until an audible click indicates that the card is correctly inserted.
Replacing the Battery
1.Slide and hold the battery release latch to the 
release position (1), insert the battery pack and 
press down (2).2.Slide the battery lock in the direction shown to 
secure the battery in place.
1 2 

Chapter 4135
Troubleshooting
Common Problems
Use the following procedure as a guide for computer problems.
NOTE: The diagnostic tests are intended to test only Acer  products. Non-Acer products, prototype cards, or 
modified options can give false e rrors and invalid system responses.
1. Obtain the failing symptoms in as much detail as possible.
2. Verify the symptoms by attempting to re-create the fa ilure by running the diagnostic test or by repeating 
the same operation.
3. Use the following table...

136Chapter 4
Power On Issue
If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs:
Computer Shutsdown Intermittently
If the system powers off at intervals, perform the fo llowing actions one at a time to correct the problem.
1. Check the power cable is properly connected  to the computer and the electrical outlet. 
2. Remove any extension cables between the computer and the outlet.
3. Remove any surge protectors between...

Chapter 4137
No Display Issue
If the Display  doesn’t work, perform the following actions one at a time to correct the problem. Do not replace 
a non-defective FRUs:
No POST or Video
If the POST or video doesn’t display, perform the foll owing actions one at a time to correct the problem.
1. Make sure that the internal display is selected. On  this notebook model, switching between the internal 
display and the external display is done by pressing  Fn+F5. Reference Product pages for specific model...

138Chapter 4
Abnormal Video Display
If video displays abnormally, perform the following actions one at a time to correct the problem.
1.Reboot the computer.
2. If permanent vertical/horizontal lines  or dark spots display in the same location, the LCD is faulty and 
should be replaced. See “Disassembly Process” on page 46.
3. If extensive pixel damage is present (different colore d spots in the same locations on the screen), the LCD 
is faulty and should be replaced.  See “Disassembly Process” on page...

Chapter 4139
LCD Failure
If the LCD fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Built-In Keyboard Failure
If the built-in  Keyboard fails, perform the following actions one at a ti me to correct the problem. Do not replace 
a non-defective FRUs: 

140Chapter 4
TouchPad Failure
If the To u c h P a d  doesn’t work, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs:
Internal Speaker Failure
If the internal  Speakers fail, perform the following actions one at a time to correct the problem. Do not replace 
a non-defective FRUs: