Acer Aspire 2920 Service Guide

Chapter 391
10.Disconnect the inverter board cable from its connector, then disconnect the 2P cable on the inverter board 
to remove it. 
11 .Detach the acetic tapes holding the FPC cable from the LCD panel and detach the acetic tape securing 
the FPC connector.  

92Chapter 3
12.Disconnect the FPC cable from the LCD panel. 
Removing the LCD Brackets
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.See “Removing the LCD Bezel” on page 87.
9.See “Removing the LCD module with the...

Chapter 393
11 .Remove the four screws (G) securing the left and right LCD brackets to remove the brackets. 
Removing the Antennas 
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56.
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.See “Removing the LCD Bezel” on page 87....

94Chapter 3
12.Remove the tapes together with the antenna cables from the back cover.  
Removing the Internal Microphone and Web Camera
1.See “Removing the Battery Pack” on page 56.
2.See “Removing the SD dummy card” on page 56. 

Chapter 395
3.See “Removing the ExpressCard dummy card” on page 57.
4.See “Removing the Lower Cover” on page 57.
5.See “Removing the WLAN Board Modules” on page 60.
6.See “Removing the Keyboard” on page 69.
7.See “Removing the LCD Module” on page 70.
8.See “Removing the LCD Bezel” on page 87.
9.See “Removing the LCD module with the Brackets” on page 88.
10.See “Removing the Antennas” on page 93.
11 .Remove the internal microphone from the back cover. 
12.Remove the Web camera from the back cover.  

96Chapter 3 

Chapter 497
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 errors 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 failure by running the diagnostic test or by repeating 
the same operation.
3.Use the following table with the verified symptom to determine...

98Chapter 4
System Check Procedures
External Diskette Drive Check
Do the following to isolate the problem to a controller, driver, or diskette. A write-enabled, diagnostic diskette is 
required.
NOTE: Make sure that the diskette does not have more than one label attached to it. Multiple labels can cause 
damage to the drive or cause the drive to fail. 
Do the following to select the test device.
1.Boot from the diagnostics diskette and start the diagnostics program.
2.See if FDD Test is passed as the...

Chapter 499
External keyboard
If any of these devices do not work, reconnect the cable connector and repeat the failing operation. 
Memory check
Memory errors might stop system operations, show error messages on the screen, or hang the system.
1.Boot from the diagnostics diskette and start the doagmpstotics program (please refer to main board.
2.Go to the diagnostic memory in the test items.
3.Press F2 in the test items.
4.Follow the instructions in the message window.
NOTE: Make sure that the DIMM is...

100Chapter 4
Check the Power Adapter
Unplug the power adapter cable from the computer and measure the output voltage at the plug of the power 
adapter cable. See the following figure
1.If the voltage is not correct, replace the power adapter.
2.If the voltage is within the range, do the following:
Replace the System board.
If the problem is not corrected, see “Undetermined Problems” on page 116.
If the voltage is not correct, go to the next step.
NOTE: An audible noise from the power adapter does not...