Acer Travelmate 8431 Service Guide

Chapter 343
3.Remove the wireless card.  
4.Remove ODD. 

44Chapter 3
5.Use the sleeve to remove the rubber and remove all of the screw on the back of the BAP41.   
Remove Keyboard
1.Disconnect five latches on the keyboard. 
2.Remove the FFC behind the keyboard.  
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Chapter 345
Remove FFC of main board and sub board
1.Remove screw and FFC on the topper case and  remove the topper case.
2.Remove Power Board.  
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46Chapter 3
3.Remove the FFC and screw on the Wireless board.
4.Remove the FFC on the panel and remove Card reader board.  
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Chapter 347
5.Remove connector on the audio board and remove two screws on it.
6.Remove the cable on the back of audio board.
7.Remove the connector of Bluetooth.
8.Remove the cable of LCD and Connector of Fan.  
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48Chapter 3
9.Remove the mainboard.
Remove Panel
1.Remove four screws on the bottom of panel and remove the panel.
  
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Chapter 349
2.Remove four sponges on the LCD and remove four screws under them.
3.Remove the bezel on the panel and remove four screws on it.   
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50Chapter 3
4.Remove LCM cable on the back of panel.
Disassembling the External Module
Disassembling the HDD Module
1.Remove HDD bezel and get HDD out of cover. 

Chapter 451
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...

52Chapter 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...