Acer Aspire 4720z Service Guide

							Chapter 355
Removing the Battery Pack
1.Unlock the battery lock as shown.
2.Slide the battery release latch then remove the battery.
  
						

							56Chapter 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 seven 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 the tab on the HDD bracket to remove the HDD module in the direction of the arrow. 
						

							Chapter 357
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.
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 notebook 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 three antennae from the wireless LAN card. 
						

							58Chapter 3
13.Remove the two screws fastening the wireless LAN card.
14.Take out the wireless LAN card from the main unit.
Removing the Keyboard and LCD Module
1.Remove the eight screws fastening the keyboard and LCD module to the main unit.
2.Turn the notebook over and gently pry up and remove the switch 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. 
						

							Chapter 359
5.Disconnect both ends of the switch board FFC cable.
6.Disconnect the LCD and microphone cables, and pull through the wireless LAN antennae from the 
underside of the main unit.
7.Remove the six screws securing the hinges.
8.Detach the LCD module from the main unit. 
						

							60Chapter 3
Disassembling the Main Unit
Separate the Main Unit Into the Upper and the Lower Case Assembly
1.Remove the ten screws fastening the lower case assembly to the upper case assembly.
2.Turn the notebook over and remove the three screws fastening the switch board.
3.Remove the switch board from the main unit.
4.Remove the ten screws fastening the upper case 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 FFC cable as shown.
3.Remove the main board. 
						

							Chapter 361
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.Disconnect the Bluetooth cable to remove the Bluetooth module.
Removing the Speakers
3.Remove the three screws fastening the speakers.
4.Remove the speakers. 
						

							62Chapter 3
Removing the Touchpad Cable
5.Disconnect the touchpad FFC cable from the touchpad module as shown.
Disassembling the Main Board
Removing the Power Board
1.Remove the two screws fastening the power board.
2.Remove the power board.
Removing the Thermal Module and System Fan
3.Unscrew the six screws fastening the thermal module and system fan.
4.Disconnect the system fan cable and remove the thermal module and system fan as shown. 
						

							Chapter 363
Removing the CPU
5.Use a flat screwdriver to release the CPU lock (Turn counter clockwise).
6.Remove the CPU from the CPU socket carefully.
Removing the Modem Card
7.Remove the screw fastening the modem card.
8.Disconnect the modem cable and remove the modem card. 
						

							64Chapter 3
Disassembling the LCD Module
1.Remove the six screw rubbers as shown.
2.Then remove the six screws fastening the LCD bezel.
3.Detach the LCD bezel from the LCD module carefully.
4.Remove the four screws holding the LCD.
5.Detach the two inverter cable connectors from the inverter board.
6.Disconnect the CCD cable connector from the CCD module.
7.Take out the LCD from the LCD cover.
8.Remove the two screws fastening the left LCD bracket and detach it.
9.Remove the two screws fastening the right LCD bracket and detach it.