Acer Travelmate 4720 Service Guide

Chapter 361
7.Remove the screws (H) securing the fan to the main unit. 
8.Remove the fan from the main unit.
Removing the CPU Heatsink 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.Unfasten the screws (A) securing the heatsink in the order shown. 
StepSize (Quantity)ColorTo r q u e
1-2 M2.5 x L5 (2) Black 1.6...

62Chapter 3
7.Carefully pull the heatsink out of the edge of the main unit.
8.Remove the heatsink.
Removing the CPU 
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. 

Chapter 363
7.Using a flat screwdriver, turn the CPU socket latch counter-clockwise to release the CPU, then remove 
the CPU. 
NOTE: When installing the CPU, make sure to install the CPU with PIN 1 at the corner as shown.  

64Chapter 3
Removing the Middle Cover
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.Open the LCD screen all the way to facilitate the easy removal of the middle cover. 
8.Carefully insert the flat screwdriver under the side of the middle cover and gently pry up the...

Chapter 365
Removing the Keyboard
1.See “Removing the Battery Pack” on page 51.
2.See “Removing the Middle Cover” on page 64.
3.Remove the two screws (G) securing the keyboard.
4.Carefully pry up and out the keyboard and turn it over. 
StepSize (Quantity)ColorTo r q u e
1-2 M2 x L3 (2) Silver 1.6 kgf-cm 

66Chapter 3
5.Disconnect the keyboard cable from the mainboard to remove the keyboard.   
Removing the LCD 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...

Chapter 367
11 .Disconnect the fingerprint cable. 
12.Disconnect the touchpad cable. 
13.Disconnect the internal microphone cable.
14.Detach the mylar tape securing the mic and antenna cables to the upper case.  

68Chapter 3
15.Carefully release the cables from the latches as shown. 
16.Detach the mylar tape from the LCD coaxial cable.
17.Disconnect the LCD coaxial cable from the mainboard. 

Chapter 369
18.Disconnect the cover switch cable from the mainboard. 
19.Turn the system over and remove the two screws (E) from the base of the unit. 
20.Remove the two screws (E) from the left and right hinge of the LCD module. 
21.Carefully remove the LCD module from the base unit. 
NOTE: Make sure the cables are routed well before connecting the cables back to the unit.
StepSize (Quantity)ColorTo r q u e
1~2 M2.5 x L6 (2) Black 3.0 kgf-cm
StepSize (Quantity)ColorTo r q u e
1~2 M2.5 x L6 (2) Black 3.0...

70Chapter 3
Separating the Upper Case from the Lower Case
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...