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 it.
Disassembling the Lower Case Assembly 
						

							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 shown.
11 .Remove the three in one cover from the lower case.
12.Remove the two screws that secure the speaker set on one side.
13.Then remove another two screws holding the speaker set on the other side.
14.Then take out the speaker set from the lower case. 
						

							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.
.
10.Remove the two screws holding the right bracket.
11 .Then remove the right bracket.
12.Remove another two screws that tighten the left bracket. 
						

							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 ODD connector board then remove it. 
						

							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 which page to go to.
Symptoms (Verified)Go To
Power failure. (The power indicator does not go 
on or stay on.)“Power System Check” on page 70.
POST does not complete. No beep or error 
codes are indicated.“Power-On Self-Test (POST) Error Message” on 
page 73
“Undetermined Problems” on page 82
POST detects an error and displayed messages 
on screen.“Error Message List” on page 74
Other symptoms (i.e. LCD display problems or 
others).“Power-On Self-Test (POST) Error Message” on 
page 73
Symptoms cannot be re-created (intermittent 
problems).Use the customer-reported symptoms and go to 
“Power-On Self-Test (POST) Error Message” on 
page 73
“Intermittent Problems” on page 81
“Undetermined Problems” on page 82
Troubleshooting
Chapter 4 
						

							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 program runs to FDD Test.
3.Follow the instructions in the message window.
If an error occurs with the internal diskette drive, reconnect the diskette connector on the system board.
If the error still remains:
1.Reconnect the external diskette drive/DVD-ROM module.
2.Replace the external diskette drive/CD-ROM module.
3.Replace the main board.
External CD -ROM D rive Check
Do the following to isolate the problem to a controller, drive, or CD-ROM. Make sure that the CD-ROM does 
not have any label attached to it. The label can cause damage to the drive or can 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 CD-ROM Test is passed when the program runs to CD-ROM Test.
3.Follow the instructions in the message window.
If an error occurs, reconnect the connector on the System board. If the error still remains:
1.Reconnect the external diskette drive/CD-ROM module.
2.Replace the external diskette drive/CD-ROM module.
3.Replace the main board.
Keyboard or Auxiliary Input D evice Check
Remove the external keyboard if the internal keyboard is to be tested.
If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable 
extending from the keyboard is correctly seated in the connector on the system board.
If the keyboard cable connection is correct, run the Keyboard Test. 
If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a 
non-defective FRU:
1.Reconnect the keyboard cables.
2.Replace the keyboard.
3.Replace the main board.
The following auxiliary input devices are supported by this computer:
TNumeric keypad
TExternal keyboard 
						

							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 the connector. A loose connection can cause an error.
Power System Check
To verify the symptom of the problem, power on the computer using each of the following power sources:
1.Remove the battery pack.
2.Connect the power adapter and check that power is supplied.
3.Disconnect the power adapter and install the charged battery pack; then check that power is supplied by 
the battery pack.
If you suspect a power problem, see the appropriate power supply check in the following list:
T“Check the Power Adapter” on page 71
T“Check the Battery Pack” on page 72