Acer Travelmate 4020 Service Guide

Chapter 355
Disassembling the Main Unit
Separate the Main Unit Into the Upper and the Lower Case Assembly
1.Remove the two screws holding the switch board.
2.Remove the switch board.
3.Disconnect the touchpad FFC from the main board.
4.Disconnect the bluetooth cable.
5.Remove the five screws that secure the upper case.
6.Remove the eighteen screws on the bottom as shown.
7.Detach the upper case assembly and place it next to the lower case assembly.
8.Disconnect the microphone cable then remove the upper...

56Chapter 3
Disassembling the Upper Case Assembly
1.Disconnect the touchpad board to touchpad FFC.
2.Disconnect the touchpad board to main board FFC.
3.Then detach the touchpad board to main board FFC from the touchpad board.
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...

Chapter 357
Disassembling the Lower Case Assembly
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...

58Chapter 3
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. 

Chapter 359
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....

60Chapter 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 361
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 Optical Drive 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...

62Chapter 3 

Chapter 463
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.
Troubleshooting
Chapter 4 

64Chapter 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...