Acer Travelmate 8331 Service Guide

Chapter 353
17.Remove two screws on the VGA board.
18. Remove VGA board.
19. Remove the LAN connection and two screws and remove wireless card.  
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54Chapter 3
20.Remove all of the connectors on the main board.
21. Remove the screw on the fan module and  three screws on the thermal module.
  
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Chapter 355
Remove Panel
22.Remove eight screws on the bottom of panel and remove the panel.
23. Remove six sponges on the LCD and remove 6 screws under them.
  
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56Chapter 3
24.Remove the bezel on the panel  and remove four screws on it.
25. 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.  
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Chapter 457
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 fa ilure by running the diagnostic test or by repeating 
the same operation.
3. Use the following table with the verified symptom to...

58Chapter 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 on e 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...

Chapter 459
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 doa gmpstotics 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 fully installed into  the connector. A loose connection can cause an error.
Power System Check
To verify the...

60Chapter 4
From Hardware:
1. Power off the computer. 
2. Remove the battery pack and measure  the voltage between battery terminals 1(+) and 6(ground). See the 
following figure.
3. If the voltage is still less than 7.5 Vdc  after recharging, replace the battery. 
To check the battery charge operation, use a discharged battery pack or a battery pack that has less than 50% 
of the total power remaining when installed in the computer. 
If the battery status indicato r does not light up, remove the...

Chapter 461
Power-On Self-Test (POST) Error Message 
The POST error message index lists the error message and their possible causes. The most likely cause is 
listed first.
NOTE: Perform the FRU replacement or actions in the s equence shown in FRU/Action column, if the FRU 
replacement does not solve the problem, put the orig inal part back in the computer. Do not replace a 
non-defective FRU.
This index can also help you determine the next possible FRU to be replaced when servicing a computer.
If the...

62Chapter 4
Index of Error Messages
Error Code List
Error Message List 
Error CodesError Messages
006 Equipment Configuration Error
Causes:
1. CPU BIOS Update Code Mismatch.
2. IDE Primary Channel Master Drive Error.
(THe causes will be shown before “Equipment 
Configuration Error”)
010 Memory Error at xxxx:xxxx:xxxxh (R:xxxxh,  W:xxxxh) .
070 Real Time Clock Error.
071 CMOS Battery Bad.
072 CMOS Checksum Error.
110 System disabled. Incorrect password is specified.
 Battery critical LOW. In this...