Acer Aspire 5740 Service Guide

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This chapter contains step-by-step procedures on how to disassemble the notebook computer for 
maintenance and troubleshooting.
Disassembly Requirements
To disassemble the computer, you need the following tools:
•Wrist grounding strap and conductive mat for preventing electrostatic discharge
•Flat screwdriver
•Philips screwdriver
•Hex screwdriver
•Plastic flat screwdriver
•Plastic tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the 
screws with the corresponding components to avoid mismatch when putting back the components.
Chapter 3
Machine Disassembly and Replacement 
						

							34Chapter 3
General Information
Pre-disassembly Instructions
Before proceeding with the disassembly procedure, make sure that you do the following:
1.Turn off the power to the system and all peripherals.
2.Unplug the AC adapter and all power and signal cables from the system. 
3.Place the system on a flat, stable surface. 
4.Remove the battery pack.
Disassembly Process
The disassembly process is divided into the following stages:
•External module disassembly
•Main unit disassembly
•LCD module disassembly
The flowcharts provided in the succeeding disassembly sections illustrate the entire disassembly sequence. 
Observe the order of the sequence to avoid damage to any of the hardware components. For example, if you 
want to remove the main board, you must first remove the keyboard, then disassemble the inside assembly 
frame in that order. 
Main Screw List
ItemScrewColorPart No.
A M2.5 x L8 Black 86.00E34.738
B M2.5 x L6 Black 86.00E12.536
C M2 x L3 Silver 86.9A522.3R0
D M3 x L4 Silver 86.9A554.4R0
E M2 x L4 Black 86.00E13.524
F M2 x L4 Silver 86.9A552.4R0
G M2.5 x L10 Silver 86.1A553.100 
						

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External Module Disassembly Process
External Modules Disassembly Flowchart
The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you 
on the components that need to be removed during servicing. For example, if you want to remove the main 
board, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
Screw List
ItemScrewColorPart No.
A M2.5 x L8 Black 86.00E34.738
D M3 x L4 Silver 86.9A554.4R0
F M2 x L4 Silver 86.9A552.4R0
EXTERNAL MODULE DISASSEMBLY
WLAN
BOARDTURN OFF POWER
AND PERIPHERALS
UNPLUG POWER
CABLES
BACK
COVER Captive Screwx2
DIMM
MODULES
REMOVE BATTERY
PA C K
SD DUMMY CARD
Ax3
Cx1
ODD
MODULE
OPTICAL DISK
DRIVEOPTICAL
LOCKER
BRACKET
Dx2
HDD
MODULE
HARD DISK
BRACKETHARD DISK
DRIVE Fx1
DIMM
COVER Captive Screwx1Ax1
Fx1 
						

							36Chapter 3
Removing the Battery Pack
1.Turn base unit over. 
2.Slide the battery lock/unlock latch to the unlock position. 
 Note: Battery has been highlighted with the yellow circle as above image shows.  Please detach the 
battery and follow the local regulations for disposal.
3.Slide the battery release latch to the release position to pop out the battery pack, then remove the battery 
pack from the main unit.  
						

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Removing the SD Dummy Card
1.Push the SD dummy card all the way in to eject it.
2.Pull it out from the slot.  
						

							38Chapter 3
Removing the DIMM Module
1.See “Removing the Battery Pack” on page 36.
2.Remove the one captive screw and one screw (A) securing the DIMM module cover.
3.Use a plastic screw driver to carefully pry open the DIMM module cover. 
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L8 (1) Black 3 kgf-cm 86.00E34.738 
						

							Chapter 339
4.Push out the latches on both sides of the DIMM socket to release the DIMM. 
5.Remove the DIMM module. 
Removing the Back Cover
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.Remove the two captive screws and three screws (A) securing the back cover.   
Size (Quantity)ColorTo r q u ePart No.
M2.5 x L8 (3) Black 3 kgf-cm 86.00E34.738 
						

							40Chapter 3
5.Use a plastic screw driver to carefully pry open the back cover. 
6.Remove the back cover from the lower case. 
Removing the Hard Disk Drive Module
1.See “Removing the Battery Pack” on page 36.
2.See “Removing the SD Dummy Card” on page 37.
3.See “Removing the DIMM Module” on page 38.
4.See “Removing the Back Cover” on page 39. 
						

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5.Remove the one screw (F) securing the hard disk drive module. 
6.Slide the hard disk drive module away from the connector. 
Size (Quantity)ColorTo r q u ePart No.
M2 x L4 (1) Silver 1.6 kgf-cm 86.9A552.4R0 
						

							42Chapter 3
7.Lift the hard disk drive module and remove it from the hard disk drive bay.
NOTE: To prevent damage to device, avoid pressing down on it or placing heavy objects on top of it. 
8.Remove the two screws (D) securing the hard disk to the bracket and remove the hard disk from the 
bracket.      
Size (Quantity)ColorTo r q u ePart No.
M3 x L4 (2) Silver 3.0 kgf-cm 86.9A554.4R0