Acer Aspire 5739 Service Guide

Chapter 361
5.Clean the thermal pad off of the heat sink. Scrape the thermal pad off with a plastic implement and then use 
alcohol and a microfiber cloth to remove any residue from the heat sink. 
6.Lift the CPU clear of the socket by grasping from the corners and carefully ease the CPU out from under the 
heat sink.
WARNING:Take care to prevent the pins from becoming bent while removing the CPU. If you find it difficult to 
remove the CPU using this method, or lack the tools to properly remove the CPU...

62Chapter 3
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
Screw List
StepScrewQuantityPart No.
Hinge Covers M2*3 2 86.AD302.001
Switch Cover M2.5*3 4 86.AD302.002
M2.5*10 2 86.AD302.004
Function Board M2.5*3 2 86.AD302.002
Speaker Module M2.5*3 2 86.AD302.002
LCD Module M2.5*5 6 86.AD302.003
Upper Cover M2.5*10 10 86.AD302.004
M2.5*5 6 86.AD302.003
M2.5*3 1 86.AD302.002
Finger Print Reader M2*3 1 86.AD302.001
TouchPad Bracket M2*3 2 86.AD302.001
eKey Board M2.5*3 1 86.AD302.002
USB Board...

Chapter 363
Removing the Hinge Covers
1.See “Removing the Battery Pack” on page 49.
2.Remove the two screw caps and screws from the Hinge Covers.
3.Slide the covers off the hinges in the direction of the arrows.
IMPORTANT:The left and right Hinge Covers are shaped differently and marked L and R on the inside. Ensure 
that the correct cover is used during reassembly.
Removing the Switch Cover
CAUTION: Using tools to remove the Switch Cover may cause damage to the outer casing. It is 
recommended that only...

64Chapter 3
2.See “Removing the Hinge Covers” on page 63.
3.Locate and remove the six securing screws on the bottom of the computer.
4.Turn the computer over and open the LCD module to expose the Switch Cover.
IMPORTANT:The LCD module does not fully extend. Damage will occur if you attempt to extend the LCD 
module beyond the manufacturer’s design.
5.Pull the switch cover up from the left or right corner, separating the back edge first.
StepSizeQuantityScrew Type
Switch Cover
(red callout)M2.5*6 6
Switch...

Chapter 365
6.Using both hands, lift both sides of the rear edge of the Switch Cover upward as shown.
7.Place the switch board on the keyboard.
8.Disconnect the function board from the main unit by lifting the FFC lock and removing the FFC as shown. 

66Chapter 3
9.Disconnect the power board from the main unit by lifting the FFC lock and removing the FFC as shown.
Removing the Power Save Board
1.See “Removing the LCD Module” on page 68.
2.Disconnect the Power Save Board from the Function Board by lifting the FFC lock and removing the FFC as 
shown.
3.Remove the two screws securing the Power Save Board to the Switch Cover as shown.
StepSizeQuantityScrew Type
Switch Cover
(red callout)M2.5*4 2 

Chapter 367
4.Remove the Power Save Board from the Switch Cover.
Removing the Power Switch Board
1.See “Removing the LCD Module” on page 68.
2.Remove the three screws securing the Power Save Board to the Switch Cover as shown.
3.Remove the power board by sliding it out from the securing tab as shown.
Removing the Keyboard
1.See “Removing the Switch Cover” on page 63.
2.Pull up on the center rear of the keyboard until the Keyboard snaps free of the securing tabs on both sides of 
the Keyboard....

68Chapter 3
IMPORTANT:The keyboard is still attached to the Mainboard FFC - do not pull on the keyboard.
3.Lay the keyboard face down on the touchpad.
4.Unlock the connector and pull the FFC to remove it from the Mainboard.
5.Remove the keyboard from the chassis.
Removing the LCD Module
1.See “Removing the WLAN Module” on page 52.
2.See “Removing the Keyboard” on page 67. 

Chapter 369
3.Turn the computer over. Remove the two securing screws as shown.
StepSizeQuantityScrew Type
LCD Module M2.5*5 2 

70Chapter 3
4.Starting at the LCD module, completely remove the Antenna cable from the cable channel. 
5.Rest the computer on its side with the LCD Module open and push the Antenna cable through the chassis as 
shown.