Acer Travelmate 4720 Service Guide

							Chapter 371
13.Gently detach the upper case from the lower case. 
Removing the Touchpad Board Module
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.Disconnect the touchpad cable from the touchpad board. 
13.Disconnect the fingerprint cable from the fingerprint board.  
						

							72Chapter 3
14.Remove the four screws (C) on the touchpad bracket.  
15.Detach the touchpad bracket from the upper case. 
16.Carefully insert the flat screwdriver under the side of the touchpad board and gently pry up the board.
17.Continue prying the board until it releases from the upper case, then remove the board.  
StepSize (Quantity)ColorTo r q u e
1~4  M2 x L3 (4) Silver 1.6 kgf-cm 
						

							Chapter 373
Removing the Fingerprint Board
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.See “Removing the Touchpad Board Module” on page 71.
13.Remove the two screws (C) securing the fingerprint board to the bracket.  
14.Detach the fingerprint board. 
Removing the LED Indicators Board
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
StepSize (Quantity)ColorTo r q u e
1~2  M2 x L3 (2) Silver 1.6 kgf-cm 
						

							74Chapter 3
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.Remove the screw (G) on the LED indicators board.
13.Turn the LED board over, then detach the LED cable from the board.
14.Disconnect the LED board cable from the board, then remove the board.
Remove the Daughter Board
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
StepSize (Quantity)ColorTo r q u e
1  M2 x L3 (1) Silver 1.6 kgf-cm 
						

							Chapter 375
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.Disconnect the Bluetooth board cable from the mainboard.
13.Disconnect the speaker cable from the mainboard.
14.Remove the two screws (C) that secures the daughter board to the mainboard.  
StepSize (Quantity)ColorTo r q u e
1~4  M2 x L3 (2) Silver 1.6 kgf-cm 
						

							76Chapter 3
15.Detach the daughter board.
Removing the Mainboard
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.See “Remove the Daughter Board” on page 74.
13.Remove the screw (A) holding the mainboard. 
StepSize (Quantity)ColorTo r q u e
1 M2 x L4 (1) Silver 1.6 kgf-cm 
						

							Chapter 377
14.Carefully detach the mainboard from the lower case.
15.Turn the mainboard over then disconnect the modem cable from modem board.  
16.Disconnect the modem board cable from the mainboard.
Removing the Modem Board 
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70. 
						

							78Chapter 3
12.See “Remove the Daughter Board” on page 74.
13.See “Removing the Mainboard” on page 76.
14.Remove the two screws (C) on the modem board. 
15.Detach the modem board from the mainboard. 
Removing the Bluetooth Board
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.See “Remove the Daughter Board” on page 74.
13.See “Removing the Mainboard” on page 76.
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L3 (2) Silver 1.6 kgf-cm 
						

							Chapter 379
14.Carefully detach the Bluetooth board from the right spearker module.
Removing the Speaker Modules
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the SD Dummy Card” on page 51.
3.See “Removing the Express Dummy Card” on page 52.
4.See “Removing the Lower Cover” on page 53.
5.See “Removing the Fan Module” on page 60.
6.See “Removing the CPU Heatsink Module” on page 61.
7.See “Removing the CPU” on page 62.
8.See “Removing the Middle Cover” on page 64.
9.See “Removing the Keyboard” on page 65.
10.See “Removing the LCD Module” on page 66.
11 .See “Separating the Upper Case from the Lower Case” on page 70.
12.See “Remove the Daughter Board” on page 74.
13.See “Removing the Mainboard” on page 76.
14.See “Removing the Bluetooth Board” on page 78.
15.Remove the two screws (D) holding the left and right speaker modules to the lower case.
StepSize (Quantity)ColorTo r q u e
1~2 M3xL4 (2) Silver 3.0 kgf-cm 
						

							80Chapter 3
16.Carefully detach the speaker modules as shown.