Acer Aspire 4520 Service Guide

							
Chapter 355
Disassembly Procedure Flowchart
The flowchart on the succeeding page 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 system board, you must fi rst remove the keyboard, then disassemble the inside assembly frame in 
that order.
Start
Thermal DoorHDD Door
LCD Module
Middle Cover
HDD Bracket
Keyboard
Battery Pack
F*2
D*5
F*1
B*4 C*2 LCD hinges to logic
D*2 LCD hinges to logic C*2 on bottom side
C*8 upper case assembly to lower case assembly on bottom side C*2 upper case assembly to lower case assembly on upper side
Lower Case Assembly
ModemBoardSwitch Board (for AS
models)
Upper Case Assembly
Main Board
H*4
Speaker Set
ODD Module
Thermal
Module
Lower Case
F*2
F*1
F*2 F*1
System FanMemory
CPU
B*1
D*1
HDD
F*1
F*2
Media Board (for AS
models)Touchpad Bracket
F*1
TouchpadTouchpad
FFC
Mimi Cover
F*1 
						

							
56Chapter 3
Screw List
ItemDescriptionPart Number
A SCREW M2.5*3(NL) 86.TAVV5.001
B SCREW M2.5*6(NL) 86.TAVV5.002
C SCREW M2.5*10(NL) 86.TAVV5.003
D SCREW M2.5*15(NL) 86.TAVV5.004
E SCREW M2*2.2 86.TAVV5.005 F SCREW M2*3(NL) 86.TAVV5.006
G SCREW M2*4 86.TAVV5.007
H SCREW M3*4(NL) 86.TAVV5.008 I SCREW D-SUB 4#X40* 1/5-NI (NL) 86.TAVV5.009
LCD Module
LCD Inverter
LCD Panel
Wireless
Antenna Set
LCD Bezel
G*1 for 15
G*2 for 15.4
B*4
B*2
G*2 for 15.4
F*8 (4 on left; 4 on right)
LCD
Assembly
LCD CableLCD Bracket Sets
LCD 
						

							
Chapter 357
Removing the Battery Pack
1.Unlock the battery lock (move th e battery lock to the right).
2. Slide the battery release latch then remove the battery.
  
						

							
58Chapter 3
Removing the HDD Module/ODD Module/Memory/Wireless LAN Card/
Keyboard and the LCD Module 
1. Press and release the PC dummy card from the PC slot as shown.
2. To access the internal laptop components, you have to  first remove the back panel. Turn over the laptop 
and remove the nine screws fastening the back panel.
3. Lift the back panel up as shown.
Removing the HDD Module
4.Remove the two screws fastening the HDD module bracket.
5. Pull out the HDD module by the two bracket as shown.
Removing the ODD Module
6.Remove the screw fastening the ODD module.
7. Use a flat screwdriver to gently  push out the ODD module as shown. 
						

							
Chapter 359 
						

							
60Chapter 3
Removing the Memory
8.Pull out the snaps securing the memory in place. The memory will pop up.
9. Remove the memory from the DIMM socket (If the not ebook has two memory modules, then repeat this 
step). 
Removing the Wireless LAN Card
10. Remove the two screws fastening the wireless LAN card panel.
11 . Lift up the panel as shown.
12. Disconnect the main and auxiliary antenna from the wireless LAN card.
13. Remove the two screws fastening the wireless LAN card.
14. Take out the wireless LAN card from the main unit. 
						

							
Chapter 361
Removing the Keyboard and LCD Module
1.Remove the eight screws fastening the key board and LCD module to the main unit.
2. Turn the notebook over and gently pry up  and remove the power board cover as shown.
3. Lift the keyboard up and towards you.
4. Disconnect the keyboard cable from the main board  and remove the keyboard from the main unit.
5. Disconnect both ends of the power board cable.
6. Disconnect the LCD module and microphone cables, and pull through the wireless LAN antennas from 
the underside of the main unit.
7. Remove the six screws securing the hinges. 
						

							
62Chapter 3
8.Detach the LCD module from the main unit. 
						

							
Chapter 363
Disassembling the Main Unit
Separate the Main Unit Into the Upper and the Lower Case Assembly
1.Remove the ten screws fastening the lower ca se assembly to the upper case assembly.
2. Turn the notebook over and remove the  three screws fastening the power board.
3. Remove the power board from the main unit.
4. Remove the eight screws fastening the upper ca se assembly to the lower case assembly.
5. Disconnect the touchpad, speaker and bluetooth cables.
6. Gently lift off the upper case assembly from the lower case assembly
Disassembling the Lower Case Assembly
Removing the Main Board
1.Remove the two screws fastening the main board to the lower case.
2. Disconnect both ends of the audio board cable as shown.
3. Remove the main board. 
						

							
64Chapter 3
Removing the Audio Board
4.Remove the screw fastening the audio board.
5. Remove the audio board.
Disassembling the Upper Case Assembly
Removing the Bluetooth Module
1.Remove the two screws fastening the bluetooth module.
2. Remove the bluetooth module.
Removing the Speakers
3.Remove the speaker cable from the upper case.
4. Remove the three screws  fastening the speakers.
5. Remove the speakers.