TWN Gctwn | eMachines D720 manual

Model	RO	Country	Acer Part No	Description

eMD520-	PA	ACLA-	LX.N110Y.002	eMD520-571G12Mi EM VHB32eTXC2
571G12Mi		Portuguese		UMA 1*1G/120/6L/CB_bg_XC21

eMD520-	PA	ACLA-Spanish	LX.N110Y.001	eMD520-571G12Mi EM VHB32eTEA3
571G12Mi				UMA 1*1G/120/6L/CB_bg_ES21

eMD520-	AAP	Vietnam	LX.N110C.016	eMD520-570512Ci LINPUSeVN1 UMA
570512Ci				1*512/120/6L/CB_bg_AN_EN11

eMD520-	WW	WW	S2.N110Y.001	eMD520-571G12Mi VHB32eWW1 UMA
571G12Mi				2*512/120/6L/CB_bg_AN_EN13

eMD720-	WW	WW	S2.N250Y.001	eMD720-321G12Mi VHB32eWW1 UMAC
321G12Mi				2*512/120/6L/CB_bg_0.3D_AN_EN13

eMD720-	CHINA	China	LX.N250Y.003	eMD720-321G12CVHB32eTCN1 UMAC
321G12C				1*1G/120/6L/CB_0.3D_AN_SC11

eMD720-	CHINA	China	LX.N250Y.002	eMD720-321G16Mi VHB32eTCN1
321G16Mi				UMAC 1*1G/160/6L/
				CB_bg_0.3D_AN_SC11

eMD720-	TWN	GCTWN	LX.N250Y.001	eMD720-321G16Mi VHB32eTTW1
321G16Mi				UMAC 1*1G/160/6L/
				CB_bg_0.3D_AN_TC11

eMD720-	PA	Canada	LX.N250Y.006	eMD720-322G32Mi VHB32eTCA2 UMAC
322G32Mi				1*2G/320/6L/CB_bg_0.3D_AN_FR31

eMD720-	PA	USA	LX.N250Y.005	eMD720-322G32Mi VHB32eTUS1 UMAC
322G32Mi				1*2G/320/6L/CB_bg_0.3D_AN_EN31

eMD720-	PA	ACLA-Spanish	LX.N250Y.004	eMD720-322G32Mi EM VHB32eTEA1
322G32Mi				UMAC 1*2G/320/6L/
				CB_bg_0.3D_AN_ES21

eMD520-	CHINA	China	LX.N090Y.021	eMD520-571G12Mi VHB32eTCN1
571G12Mi				UMAC 1*1G/120/6L/
				CB_bg_0.3D_AN_SC11

eMD520-	CHINA	Hong Kong	LX.N090Y.020	eMD520-571G12Mi VHB32eTHK2 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_AN_ZH31

eMD520-	CHINA	China	LX.N090Y.019	eMD520-571G12Ci VHB32eTCN1 UMAC
571G12Ci				1*1G/120/6L/CB_bg_0.3D_AN_SC11

eMD520-	CHINA	Hong Kong	LX.N090Y.018	eMD520-571G12Ci VHB32eTHK2 UMAC
571G12Ci				1*1G/120/6L/CB_bg_0.3D_AN_ZH31

eMD520-	CHINA	China	LX.N090C.015	eMD520-571G12Ci LINPUSeCN1 UMAC
571G12Ci				1*1G/120/6L/CB_bg_0.3D_AN_EN91

eMD520-	CHINA	China	LX.N090C.014	eMD520-571G12Mi LINPUSeCN1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_AN_EN91

eMD520-	AAP	Australia/New	LX.N090C.010	eMD520-571G12Mi LINPUSeAU1 UMAC
571G12Mi		Zealand		1*1G/120/6L/CB_bg_0.3D_EN11

eMD520-	AAP	Singapore	LX.N090C.009	eMD520-571G12Mi LINPUSeSG1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_EN11

eMD520-	AAP	India	LX.N090C.011	eMD520-571G12Mi LINPUSeIN1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_EN11

eMD520-	AAP	Indonesia	LX.N090C.008	eMD520-571G12Mi LINPUSeID1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_ID21

eMD520-	AAP	Indonesia	LX.N090C.012	eMD520-571G12Mi LINPUSeID1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_EN11

eMD520-	AAP	Philippines	LX.N090C.007	eMD520-571G12Mi LINPUSePH1 UMAC
571G12Mi				1*1G/120/6L/CB_bg_0.3D_EN11

145	Appendix A

Image 155

eMachines D720 manual TWN Gctwn

Contents

EMachines D720/D520 Series Service Guide Revision History III Copyright Conventions Preface Page Table of Contents Viii 107 Model Definition and Configuration 142 Table of Contents Chapter Features Special keys and controls Power subsystemCommunication Privacy control System Block Diagram Icon Description Your Acer Notebook tourFront View Icon Description Latch Locks and releases the lid Closed Front ViewRear View HDD Left View Right View Bottom View Icon Function Description Indicators Function Left Button Right Button Main TouchPad TouchPad Basics with fingerprint reader Lock Keys and embedded numeric keypad Using the Keyboard Key Description Windows Keys Hotkey Icon Function Description Hot Keys US dollar sign Euro symbolSpecial Key Acer GridVista dual-display compatible Using the System Utilities ICH9-M Hardware Specifications and ConfigurationsProcessor Specification Memory Combinations Slot Total Memory System Memory SpecificationLAN Interface Specification Wireless Module 802.11b/g Specification Sata Hard Disk Drive Interface Specification8MB System Board Major Chips Controller Super-Multi Drive Module SpecificationAudio Interface Specification Keyboard Specification LCD Specification Battery Specification Navigating the Bios Utility Bios Setup Utility Parameter Description Information Parameter Description Format/Option Main IGD TV AdvancedParameter Description Submenu Items LAN IDE FER USBAspm URR Clear or Set Disabled orSecurity Parameter Description Option Removing a Password Setting a Password Changing a Password DTS PowerEmttm Acpi S3 IDE0 Hitachi HTS542516K9SA00 Boot Exit Saving Changes Exit Bios Flash Utilities USB HDD ABC USB Cdrom DOS Flash UtilityPage WinFlash Utility Remove HDD Password Remove HDD/BIOS Password Utilities Removing Bios Passwords Key in biospw 14452 Cleaning Bios Passwords Chapter Disassembly Requirements Machine Disassembly and Replacement Main Screw List Quantity Part Number Pre-disassembly InstructionsDisassembly Process General Information Screw List Step Quantity External Module Disassembly ProcessExternal Modules Disassembly Flowchart Removing the Battery Pack Step Size Quantity Screw Type Memory Cover M2.5*8 Removing the Lower CoversWlan HDD Remove the Wlan cover as shown Removing the Dimm Modules Step Size Quantity Screw Type Wlan Module M2*L3 Removing the Wlan Module Chapter Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3*3 Step Size Quantity Screw Type ODD Module M2.5*5 Removing the Optical Drive Module Step Size Quantity Screw Type ODD Bracket M2*L3 Main Unit Disassembly Process Step Size Quantity Screw Type Switch Cover M2.5*5 Removing the Switch Cover Chapter Removing the Keyboard Removing the Antenna Page Step Size Quantity Screw Type LCD Module M2.5*8 Removing the LCD Module Step Size Quantity Screw Type Step Size Quantity Screw Type Upper Cover M2.5*5 Removing the Upper CoverStep Size Quantity Screw Type Upper Cover M2.5*8 Disconnect a as shown Chapter Step Size Quantity Screw Type TouchPad Bracket M2*L3 Removing the TouchPad Bracket Chapter Removing the Speaker Modules Remove the Speaker Modules from the upper cover Removing the Power Board Step Size Quantity Screw Type Modem Module M2*L3 Removing the Modem Module Step Size Quantity Screw Type Mainboard M2.5*5 Removing the Main Board Chapter Step Size Quantity Screw Type Mainboard M2.5*4 Removing the CPU Fan Step Size Quantity Screw Type Thermal Module M2.5*6.5 Removing the Thermal Module Removing the CPU LCD Module Disassembly Process Step Size Quantity Screw Type LCD Bezel M2.5*5 Removing the LCD Bezel Step Size Quantity Screw Type Inverter Board M2.5*5 Removing the Inverter Board Step Size Quantity Screw Type Camera Module M2*L3 Removing the Camera Module Step Size Quantity Screw Type LCD Panel M2.5*5 Removing the LCD Panel Step Size Quantity Screw Type LCD Brackets M2*L3 Removing the LCD Brackets and FPC Cable Removing the Antennas Removing the MIC Module Replacing the LCD Panel LCD Module Reassembly ProcedurePage Chapter Page Replacing the LCD Bezel Replacing the Thermal Module Main Module Reassembly ProcedureReplacing the CPU Align the Fan Module on the screw brackets Replacing the CPU Fan ModuleReplacing the Mainboard Replacing the Modem Module Replacing the Power Board Replacing the Speaker Module Chapter Replacing the Upper Case Replacing the TouchPad Bracket Chapter Replacing the LCD Module Chapter Replacing the Antenna Cable Replacing the Keyboard Replacing the Switch Cover Replacing the ODD Module Place the HDD in the HDD carrier Replacing the Hard Disk Drive Module Insert the Wlan board into the Wlan socket Replacing the Wlan ModuleReplacing the Dimm Modules Replace the Memory Cover Replace the Wlan Cover Replacing the Lower Covers Replacing the Battery Symptoms Verified Go To Common Problems Computer Shutsdown Intermittently Power On Issue No Post or Video No Display Issue Abnormal Video Display Random Loss of Bios Settings Built-In Keyboard Failure LCD Failure Internal Speaker Failure TouchPad Failure Sound Problems Internal Microphone Failure Microphone ProblemsSelect Set up microphone Select Startup Repair HDD Not Operating CorrectlySelect Repair your computer ODD Not Operating Correctly ODD Failure Discs Do Not Play Drive Not Detected Modem Function Failure Wireless Function Failure External Mouse Failure Thermal Unit Failure Other Failures Dimm Intermittent ProblemsUndetermined Problems Code Description Post CodesSec Memory BDS & Specific action Each Driver entry point used in 80PORT Each Peim entry point used in 80PORT Smbios CF9RESETBootpriority Fvbservice Fwblockservice LegacybiosLegacybiosplatform Setuputility Each SmmDriver entry point used in 80PORT Top View Bottom View Hardware Open Gap Description Clearing Password Check and Bios RecoveryClearing Password Check Steps for Clearing Bios Password Check Steps for Bios Recovery from USB Storage Bios Recovery by Crisis DiskBios Recovery Boot Block Bios Recovery Hotkey FRU Field Replaceable Unit List Description Acer P/N EMachines D720/D520 Exploded DiagramsMain Assembly LCD Panel EMachines D720/D520 FRU List Combo Drive Category Description Acer Part NoCPU/Processor Multi Drive Keyboard LCD Panel G 14.1 Wxga CMO N141I3-L02 Assy LCD Module 14.1 IN. Wxga Glare W/ANTENNA CCDLCD Panel G 14.1 Wxga AUO B141EW04 LCD Panel G 14.1 Wxga Samsung LTN141W3-L01-J Screw List Chapter 141 Model Country Acer Part No Description Appendix aEMachines D720/D520 Series China AAP TWN Gctwn Model Country Acer Part No Description CPU LCD Appendix a 148 571G12Mi 4KS 149 Appendix a 150 571G12Mi 4KS 151 Appendix a 152 Appendix B Test Compatible Components Microsoft Windows Vista Environment Test Mvpqs Vendor Type DescriptionCPU Test Intel Vendor Type Description HDD Test LAN Test ODD Test Vendor Type Description LCD TestModem Test Northbridge Chipset Test Wlan Test Southbridge Chipset Test 160 Appendix C Online Support Information 162 Index 164