Acer Aspire 9400 Service Guide

Chapter 355
6.Remove the keyboard from the main unit. 

56Chapter 3
Seperate the LCD module and main unit
1.Disconnect the LCD cable from the mainboard.
2.Tear off the tape on the wireless antenna.
3.Pull out the wireless antenna.
4.Remove the two screws securing the LCD hinge on the bottom.
5.Remove the two screws securing the LCD hinge on the rear panel.
6.Remove the two screws securing the LCD hinge as shown.
7.Remove the LCD module from the main unit. 

Chapter 357
Disassemble the main unit
Separate upper and lower case
1.Disconnect the touchpad board FFC from the mainboard
2.Disconnect the function keyboard FFC from the mainboard.
3.Remove the three screws on the upper case.
4.Remove the 25 screws on the lower case.
5.Lift up the upper case and disconnect the lid switch cable.  

58Chapter 3
6.Separate the upper and lower case.
Removing the Function Keyboard
1.Disconnect the function keyboard FFC from the function keyboard.
2.Remove the four screws securing the function keyboard bracket.
3.Remove the function keyboard bracket.
4.Pull the function keyboard up, disconnecting the microphone cable and remove the function keyboard.
Removing the Touchpad Board
1.Disconnect the touchpad board FFC from the touchpad board.
2.Remove the touchpad bracket from the upper case. 

Chapter 359
3.Remove the touchpad board.
Removing the ODD
1.Remove the ODD from the main unit. 

Chapter 360
Removing the Dummy Card
1.Remove the dummy card from the main unit.
Removing the Mainboard
1.Disconnect the fan cable from the mainboard.
2.Disconnect the speaker cable from the mainboard.
3.Remove the four screws securing the mainboard. 

61Chapter 3
4.Remove the mainboard.
Removing the System Fan
1.Remove the two screws securing the heatsink.
2.Remove the heatsink.
Removing the Speakers
1.Remove the four screws securing the left and right speakers.
2.Tear off the tape on the speaker cable. 
3.Remove the speakers from the lower case. 
Removing the MDC Module
1.Disconnect the MDC cable from the mainboard.
2.Remove the two screws securing the MDC board. 

Chapter 362
3.Remove the MDC module from the mainboard.
4.Disconnect the MDC cable from the MDC board and tear off the tape on MDC board.
Removing the Heatsink Module
1.Remove the five screws securing the heatsink.
2.Remove the heatsink module from the mainboard.
Removing the CPU
1.Turn the screw counterclockwise with a flat screw driver to release the CPU.
2.Remove the CPU from the CPU socket. 

63Chapter 3
LCD Disassembly
1.Remove the eight caps on the LCD bezel.
2.Remove the eight screws securing the LCD bezel.
3.Remove the LCD bezel from the LCD module. Please release all latches as shown. Press the latch a little 
bit to remove the LCD bezel.
4.Remove the screw securing the inverter board.
5.Pull the inverter board and turn it over, disconnect the cables from the inverter board as shown, and 
remove the inverter board.
6.Remove the four screws securing the LCD panel.
7.Remove the LCD panel...

Chapter 364
9.Remove the two screws securing the antenna.
10.Remove the antennas from the LCD cover.
11 .Remove the four screws securing the left LCD bracket.
12.Remove the left LCD bracket from the LCD panel.
13.Remove the four screws securing the right LCD bracket.
14.Remove the right LCD bracket from the LCD panel.
15.Tear off the tape on the LCD cable.
16.Disconnect the LCD cable then remove it.