Acer Aspire 7740 Service Guide

Chapter 385
Removing the FPC Cable
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Back Cover” on page 42.
3.See “Removing the Wireless LAN Card” on page 44.
4.See “Removing the Middle Cover” on page 53.
5.See “Removing the Keyboard” on page 53.
6.See “Removing the LCD Module” on page 55.
7.See “Removing the LCD Bezel” on page 80.
8.See “Removing the LCD panel with the Brackets” on page 81.
9.Detach all adhesive tapes and any cable that is glued to the LCD panel.     

86Chapter 3
10.Remove the tape securing the FPC cable connector.
11 .Disconnect the FPC cable from the LCD panel. 
Removing the Web Camera
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Back Cover” on page 42.
3.See “Removing the Wireless LAN Card” on page 44.
4.See “Removing the Middle Cover” on page 53.
5.See “Removing the Keyboard” on page 53.
6.See “Removing the LCD Module” on page 55.
7.See “Removing the LCD Bezel” on page 80.
8.See “Removing the LCD panel with the Brackets” on...

Chapter 387
9.Remove the web camera module from the LCD module back cover. 
WARNING:  The web camera module is glued to the LCD module back cover, only remove the  web camera 
module if it is defective. 

88Chapter 3
Removing the Antennas 
1.See “Removing the Battery Pack” on page 40.
2.See “Removing the Back Cover” on page 42.
3.See “Removing the Wireless LAN Card” on page 44.
4.See “Removing the Middle Cover” on page 53.
5.See “Removing the Keyboard” on page 53.
6.See “Removing the LCD Module” on page 55.
7.See “Removing the LCD Bezel” on page 80.
8.See “Removing the LCD panel with the Brackets” on page 81.
9.Release the antenna cables from the aluminium notches and hinges.
NOTE: There is no need to...

Chapter 489
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...

90Chapter 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 491
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 diagnostic 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...

92Chapter 4
Check the Battery Pack 
To check the battery pack, do the following:
From Software:
1.Check out the Power Management in control Panel.
2.In Power Meter, confirm that if the parameters shown in the screen for Current Power Source and Total 
Battery Power Remaining are correct.
3.Repeat the steps 1 and 2, for both battery and adapter.
4.This helps you identify first the problem is on recharging or discharging. 
From Hardware:
1.Power off the computer. 
2.Remove the battery pack and measure the...

Chapter 493
Index of Error Messages
Error Code 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 situation BIOS will issue 4 short...

94Chapter 4
Error Message List
Error MessagesFRU/Action in Sequence
Failure Fixed Disk Reconnect hard disk drive connector.
“Load Default Settings” in BIOS Setup Utility.
Hard disk drive
System board
Stuck Key see “Keyboard or Auxiliary Input Device Check” on page 90. 
Keyboard error see “Keyboard or Auxiliary Input Device Check” on page 90. 
Keyboard Controller Failed see “Keyboard or Auxiliary Input Device Check” on page 90. 
Keyboard locked - Unlock key switch Unlock external keyboard
Monitor type...