Acer Aspire 9920 Service Guide

							Chapter 371
Disassembling the Main Unit
Separate the Main Unit Into the Upper and the Lower Case Assembly
1.Release the four keyboard lock as shown (Use a flat screwdriver and push the keyboard lock upwards). 
2.Turn over the keyboard as the image shows.
3.Disconnect the Keyboard FFC from the main board
4.Then remove the keyboard from the main unit.
5.Remove the 18 screws fastening the upper case and the lower case assembly as shown.
6.Disconnect the Speaker cable from the main board.
7.Disconnect the Audio board FFC from the main board.
8.Disconnect the Hotkey board FFC from the main board.
9.Disconnect the Touch pad FFC from the main board.
10.Carefully detach the upper case assembly from the lower case assembly.
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Disassembling the Lower Case Assembly
11 .Disconnect the bluetooth cable from the main board and detach the bluetooth module fromt the lower 
case.
12.Remove the two screws fastening the modem board and disconnect the modem board from the main 
board.
13.Disconnect the modem cable and remove the modem board.
14.Remove the three screws fastening the main board to the lower case.
15.Detach the main board from the lower case assembly. 
						

							Chapter 373
16.Remove the three screws holding the IO board to the lower case.
17.Detach the IO board from the lower case.
18.Then detach the modem cable (with RJ11 connector) from the lower case.
19.Remove MB fom lower case.
20.Tear off the mylar holding the speaker set cable carefully.
21.Remove the eight screws fastening the speaker and sub-woofer set.
22.Then remove the speaker and sub-woofer set from the lower case.
Disassembling the Upper Case Assembly
1.Disconnect the touchpad board to main board FFC and remove it.
2.Remove the seven screws and disconnect the touchpad to touchpad board FFC. 
						

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3.Detach the touchpad bracket from the upper case.
4.Remove the touchpad board from the upper case.
5.Disconnect the touchpad to touchpad board FFC then remove the FFC and the touchpad.
6.Disconnect the launch board FFC from the launch board and the media board and remove the FFC.
7.Remove the three screws fastening the media board to the upper case.
8.Remove the media board from the upper case.
9.Remove the two screws holding the audio board to the upper case.
10.Tear off the audio cable from the lower case.
11 .Turn over the audio board as shown. 
						

							Chapter 375
12.Disconect the audio board cable from the audio board and remove the cable.
13.Disconnect the microphone cable and remove the audio board.
14.Carefully take out the microphone cable and the microphones from the lower case.
15.Detach and disconnect the launch board cable and remove it.
16.Detach the launch board insulator as shown.
17.Remove the four screws fastening the launch board.
18.Take out the launch board from the upper case.
19.Then take out the touchpad frame from the upper case. 
						

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							Chapter 377
Disassembling the LCD Module
1.Remove the eight screw rubber as shown.
2.Then remove the eight screws fastening the LCD bezel.
3.Detach the LCD bazel from the LCD module carefully.
4.Disconnect the CCD cablem from the CCD board.
5.Then remove CCD module.
6.Take out the LCD from the LCD panel.
7.Remove the four screws fastening the right/left LCD brackets.
8.Detach the right/left LCD brackets.
9.Disconnect the LCM cable from the LCD and inverter.
10.Disconnect Inverter cable from LCD panel and detach the inverter. 
						

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11 .Remove the two screws fastening the wireless antenna set and take out the antenna set from the LCD 
panel.  
						

							Chapter 379
Disassembling the External Modules
Disassembling the HDD Module
1.Remove the four screws holding the HDD (hard disk drive) foil; two on each side.
2.Carefully take out the hard disk drive from the HDD foil.
Disassembling the ODD Module
1.Remove the two screws holding the optical bracket.
2.Then remove the optical bracket from the optical disk drive. 
						

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