Acer Aspire 1680 Service Guide

61Chapter 3
4.Remove the three screws that secure the touchpad board.
5.Remove the touchpad board from the upper case.
6.Disconnect the touchpad board to touchpad FFC.
7.Remove the touchpad board to touchpad FFC from the uppwer case assembly.
8.Remove the four screws holding the touchpad bracket.
9.Detach the touchpad bracket from the upper case assembly.
10.Remove the touchpad from the upper case.
11 .Remove the two screws that secure the bluetooth module.
12.Disconnect the bluetooth module then remove...

Chapter 362
1.Disconnect the MDC cable from the modem board.
2.Detach the MDC cable from the main board.
3.Remove the two screws holding the modem board.
4.Remove the modem board from the lower case.
5.Disconnect the speaker cable from the main board.
6.Remove the two screws that secure the main board.
7.Remove the two screw nuts as shown.
8.The you can detach the main board from the upper case. 
9.Remove the three screws that secure the VGA heatsink.
10.Remove the VGA heatsink from the main board as...

63Chapter 3 

Chapter 364
Disassembling the LCD Module
1.Remove the four screw caps as shown.
2.Remove the four screws holding the LCD bezel.
3.Then detach the LCD bezel from the LCD module.
4.Disconnect the inverter board then remove it.
5.Remove the three screws holding the right hinge.
6.Then remove the three screws that secure the left hinge.
7.Remove one screw that secure the LCD bracket.
8.Remove another screw holding the LCD bracket on the other side.
9.Then detach the LCD panel from the LCD cover carefully.
....

65Chapter 3
13.Remove the left bracket as the picture shows.
14.Tear off the tape fastening the LCD cable.
15.Tear off the the LCD cable fastening the LCD cable, then remove it.. 

Chapter 366
Disassembling the External Modules
Disassembling the HDD Module
1.Remove the two screws holding the HDD bracket on one side.
2.Remove another two screws holding the HDD bracket on the other side.
3.Then take the hard disc drive out from the HDD bracket.
Disassembling the O ptical D rive Module
1.Remove the four screws as the picture shows.
2.Remove the two screws that secure the optical disc drive and the ODD holder.
3.Push the ODD holder as shown.
4.Detach the ODD holder.
5.Disconnect the...

67Chapter 3 

Chapter 468
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...

69Chapter 4
System Check Procedures
External Diskette D rive 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 470
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 fully installed into...