Power Board, PEW71/91 ON/OFF LED, PEW71/91 Wlan LED | Acer 5742

Discrete (ATI)

ITEM	DESCRIPTION

JUSB1/JUSB2	USB Connector

Power Board

UMA

	TOP		BOTTOM

Item	Description	Item	Description

LED1	PEW71/91 ON/OFF LED	LED3	PEW71/91 WLAN LED

LED2	PEW71/91 MEDIA LED	SW1	PEW71/91 Power BTN

190

Chapter 1

Image 200

Acer 5742G, 5742ZG manual Power Board, PEW71/91 ON/OFF LED, PEW71/91 Wlan LED, PEW71/91 Media LED SW1

Contents

Aspire 5742/5742G/5742Z/5742ZG Series Service Guide Revision History Copyright III Conventions Preface Page Table of Contents Viii Aspire 5742/5742G Aspire 5742Z/5742ZG Table of Contents Features Chapter Graphics StorageOptical Media Drive Webcam Wireless and networking Power adapter and batteryPrivacy control Wlan Dimensions and weight WarrantyInput and control Input and output Software System Block Diagram UMA Discrete nVidia Discrete ATI Icon Description Your Acer Notebook tourTop View Battery bay Houses the computers battery pack Rear view Left View Right View Base view HDD IndicatorsIcon Function Description Touch Pad Basics Function Left Button Right Button Main TouchPad Lock key Description Using the KeyboardLock Keys and embedded numeric keypad Windows Keys Key Description Hot Keys Hotkey Icon Function Description Hardware Specifications and Configurations CPU System Memory Specification 512MB,1GB,2GB,4GB DDR3 RAM Bios LAN Interface SpecificationMemory Combinations Slot Total Memory 0MB Keyboard Specification Hard Disk Drive Interface Specification LED Specification Bluetooth Interface SpecificationAudio Interface Specification LCD Inverter not available with this model Specification LCD Display Supported Resolution Bits IntelCamera Specification 3G Module not available with this model Specification Battery Specification Audio Codec and Amplifier SpecificationWireless Module 802.11b/g/n Specification Vram Nvidia Vram ATI System Board Major Chips Specification Ports SpecificationAC Adapter UMA Specification AC Adapter nVidia Specification Card Reader UMA & Discrete Specification AC Adapter ATI SpecificationSystem Power Management Legacy Specification Mode System LED Indicator Specification Chapter Bios Setup Utility Navigating the Bios Utility Aspire 5742/5742G/5742Z/5742ZG Bios InformationParameter Description Uuid Parameter Description Format/Option DisabledMain Disabled or SecurityParameter Description Option Clear or Set Setting a Password Removing a Password Changing a Password Continue Boot IDE1 HL-DT-STDVDRAM GT32N Exit Exit Exit Saving Changes Bios Flash Utilities DOS Flash Utility Stdvdram GT32N WinFlash Utility Remove HDD/BIOS Password Utilities Remove HDD PasswordPassword UnlockHD Removing Bios Passwords Cleaning Bios Passwords Using Boot Sequence Selector Output Using DMIToolsInput Chapter Machine Disassembly and Replacement Disassembly Requirements Pre-disassembly Instructions Disassembly Process Main Screw List Quantity Part NumberScrew 2.5D Screw 3.0D Screw List Step Quantity External Module Disassembly ProcessExternal Modules Disassembly Flowchart Removing the Battery Pack Removing the SD Dummy Card Removing the ODD Module Step Size Quantity Screw Type ODD Module M2.5*8 Step Size Quantity Screw Type ODD Bracket M2*3 Removing the Logic Lower Door Step Size Quantity Screw Type Logic lower door M2.5*8 Removing the 3G Cover Discrete Only Step Size Quantity Screw Type 3G Cover M2.5*8 Removing the RTC Battery UMA Only Remove the RTC battery from the lower cover as shown Removing the Dimm Module Removing the Wlan Module Step Size Quantity Screw Type Wlan Module M2*3 Detach the Wlan module from the Wlan socket Chapter Removing the HDD module Module Step Size Quantity Screw Type HDD Carrier M3*3 Removing the Keyboard Page Main Unit Disassembly Process Main Unit Disassembly FlowchartScrew Assy CPU Thermal Removing the Upper Cover Step Size Quantity Screw Type Chapter Page Step Size Quantity Screw Type Upper Cover M2.5*5 Page Removing the Speaker Module Lift the speaker module clear of the device Chapter Removing the Power Board Step Size Quantity Screw Type Power board M2*3 Removing the Touch Pad FFC Page Removing the Card Reader Module Discrete Only Step Size Quantity Screw Type Card Reader M2*3 Removing the USB Board USB UMA Removing the Bluetooth BoardDiscrete Disconnect the Bluetooth cable from the connector as shown Removing the ODD Connector Board UMA Only Removing the Mainboard Step Size Quantity Screw Type Mainboard M2.5*5 Page Chapter Removing the Thermal Module Screw Assy CPU Thermal Removing the CPU Removing the LCD Module See Removing the Mainboard onPage UMA Step Size Quantity Screw Type LCD Module M2.5*5 Removing the DC-In Assembly LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Step Size Quantity Screw Type LCD Bezel M2.5*6 Remove the bezel from the LCD module Chapter Removing the CCD Module Removing the Inverter Module LCD Only Step Size Quantity Screw Type Inverter Module M2.5*5 102 Chapter Page Removing the LCD/LED Panel Step Size Quantity Screw Type LCD Brackets M2.5*5Page Removing the LCD Brackets Step Size Quantity Screw Type LCD Brackets M2*3 Removing the Lvds Cable LCD LED Removing the Microphone Cable Lift the microphone set clear of the panel Chapter 109 Removing the Antennas LCD Module Reassembly Procedure Replacing the Antennas Replacing the Microphone Cable Page Replacing the Lvds Cable Replacing the LCD Brackets Replacing the LCD/LED Panel Replacing the Inverter Board 118 Chapter Replacing the CCD Module Replacing the LCD Bezel Main Module Assembly Procedure Replacing the DC-In Assembly Replacing the LCD Module Place the black antenna cable into the cable guides 124 Chapter Replacing the CPU 126 Chapter VGA/RAM PAD Replacing the Thermal ModuleMastro B6 Callouts Thermal Module M2.5*5 VGA green Replacing the Mainboard 130 Chapter Step Size Quantity Screw Type Mainboard M2.5*5 Connect the Lvds cable to the mainboard Replacing the ODD Connector Board UMA Only Replacing the Bluetooth Board Replacing the USB Board Step Size Quantity Screw Type USB Board M2*3 136 Chapter Replacing the Card Reader Board Discrete Only 138 Chapter Replacing the Touchpad FFC Replacing the Power Board Replacing the Speaker Module Replacing the Upper Cover Page 144 Chapter Step Size Quantity Screw Type Upper Cover M2.5*5 Replacing the RTC Battery UMA Only Replacing the HDD Module 148 Chapter Replacing the Wlan Module Connect the two 2 antenna cables to the module Replacing the Dimm Modules Replacing the 3G Cover Discrete Only Replacing the Lower Logic Door Replacing the ODD Module Chapter 155 Replacing the Keyboard Replacing the SD Dummy Card Replacing the Battery Common Problems Symptoms Verified Go To Power On Issue Computer Shutsdown Intermittently No Display Issue No Post or Video Random Loss of Bios Settings Abnormal Video Display LCD Failure Internal Keyboard Failure Touch Pad Failure Internal Speaker Failure Sound Problems Microphone Record Failure Microphone ProblemsSelect Set up microphone USB Failure Right side Select Startup Repair HDD Not Operating CorrectlySelect Repair your computer ODD Failure ODD Not Operating Correctly Discs Do Not Play Drive Not Detected Wireless Function Failure Bluetooth Function Test Failure 1 card Function Test Failure Thermal Unit Failure External Mouse Failure Cosmetic Failure Other Failures Dimm Intermittent ProblemsUndetermined Problems Post Code Range Phase Post Codes Peimemoryinstall PEI Peiswitchstack PEIPeienterrecoverymode PEI Peirecoverymediafound PEI Dxesmarttimerinit DXE Bdsinstallhotkey BDSBdsbeforepciioinstall BDS Dxemtcinit DXE Bdsenumerateallbootoption BDS Bdsendofbootselection BDSBdsentersetup BDS Bdsenterbootmanager BDS Functionality Name Include\ PostCode.h Phase Description Smmacpienablestart SMM Smmacpienableend SMMSmmacpidisablestart SMM Smmacpidisableend SMM JTP1 JUSB2SW1/SW2 JMIC2 Discrete nVidia FFCLED2 SW2/SW3 Discrete ATI JSPK2JKB1 JP1 Bottom View Connect to Wlan USB connector U34 Description USB ConnectorUSB/B Board Power Board PEW71/91 ON/OFF LEDPEW71/91 Wlan LED PEW71/91 Media LED SW1 PEW51 Media LED SW1 PEW71/91 Media LEDPEW51 Wlan LED PEW51 Media LED LED12 PEW51 Wlan LED SW1 PEW71/91 ON/OFF LED LED10 PEW71/91 Wlan LEDPEW71/81/91 Media LED LED11 JREAD2 CR/B BoardJREAD1 JODD2 ODD connectorODD Board Clearing Password Check and Bios Recovery Clearing Password CheckSteps for Clearing Bios Password Check Clear Cmos Jumper R671/R675 Clear Cmos Jumper Bios Recovery by Crisis Disk Bios Recovery Boot BlockBios Recovery Hotkey Steps for Bios Recovery from USB Storage 198 Chapter FRU Field Replaceable Unit List Description Acer P/N Aspire Exploded DiagramsMain Assembly Discrete Lower Cover Uniload DOOR-UMAUniload DOOR-DIS 3G DOOR-DIS LCD Assembly LED Assembly Battery Aspire FRU ListCategory Description Adapter Cable CASE/COVER/BRACKET Assembly CPU/PROCESSOR HDD/HARD Disk Drive Sata 8MB LF F/W0001SDM1PCB Sata 8MB LF F/W0001SDM1 22ZEST0, ML320S, 4K Drive Sata 8MB LF F/W Keyboard LCD BD Combo DriveDVD RW Drive LCD Cover IMR-BLACK LCD Bezel for W/CMOSAntenna WLAN-MAIN Antenna WLAN-AUX ANTENNA*2, CCD 1.3M, Brown LCD Cover IMR-BROWN ANTENNA*2, CCD 1.3M, RED LCD Cover IMR-RED Assy LED Module 15.6W Wxga Glare W ANTENNA*2, CCD 1.3M, Black LED Cover IMR-BLACK LED Cable for W/CMOS LED Bracket R&LLED LCD Samsung 15.6W Wxga Glare LED LCD BOE 15.6W Wxga Glare HT156WXB ANTENNA*2, CCD 1.3M, Brown LED Cover IMR-BROWN ANTENNA*2, CCD 1.3M, RED LED Cover IMR-RED ANTENNA*2, W/O CCD, Black LCD Cover IMR-BLACK ANTENNA*2, W/O CCD, Silver LCD Cover IMR-SILVER LCD Bezel for W/O CmosLCD Cable for W/O Cmos ANTENNA*2, W/O CCD, Brown LCD Cover IMR-BROWN ANTENNA*2, W/O CCD, RED LCD Cover IMR-RED ANTENNA*2, W/O CCD, Black LED Cover IMR-BLACK LED Cable for W/O Cmos ANTENNA*2, W/O CCD, Silver LED Cover IMR-SILVER ANTENNA*2, W/O CCD, Brown LED Cover IMR-BROWN ANTENNA*2, W/O CCD, RED LED Cover IMR-RED Mainboard Memory Miscellaneous HeatsinkSpeaker Screw List CategoryAcer Description Screw 230 Chapter Model Country Acer Part No Description Appendix aAspire 5742/5742G W7HP64ASBE1 MC W7HP64ASDE1 MCW7HP64ASNL1 MC W7HP64ASLU3 MC TWN Gctwn W7HP64ASTW1 MCW7HP64ASDK2 MC W7HP64ASPL1 MC W7HP64EMASME2 MC W7HP64ASIT1 MCW7HP64ASFR1 MC W7HP64EMASZA2 MC W7HP64ASCH1 MCW7HP64EMASTR1 MC W7HP64ASGB1 MC W7HP64KASKR1 MC China LX.R5D01.001 AS5742G-5462G32Mnrr W7HP64ASCZ2 MC Germany LX.R5302.028 AS5742G-5464G64Bnkk Chip Model Country Acer BOM NameCPU LCD VGA LX.R5D NLED15 N11PGLX.R5C AS5742G Turkey LX.R53 AS5742GN11P AS5742G Switzerland LX.R52 5463G50Mnkk 01.008 GE1GBCkk3V3 Model Country Acer VramMemory HDD 1GB SO2GBI SO1GBII 1G-DDR3 SO2GBI SO2GBIISO2GBI SO2GBII SO2GBI SO4GBII LX.R5C 1G-DDR3 SO2GBI SO2GBII LX.R5D 1G-DDR3 SO2GBI1G-DDR3 SO2GBI SO1GBII LX.R5D 1G-DDR3 SO2GBI SO2GBII 1G-DDR3 SO4GBI SO4GBII 5464G50Mncc 005 LAN1 Wireless Bluetooth AdapterODD LX.R5C NSM8XS LX.R5D NSM8XS AS5742G Turkey LX.R53 3rd WiFi 90W 374G50Mnkk 02.015 2x2 BGN AS5742G LX.R52 NBDCB4X 3rd WiFi 65W 5464G64Mnkk 02.009 2x2 BGN AS5742G Italy LX.R53 Aspire 5742Z/5742ZG Model Country Acer Description W7HB64EMASME2 MC Middle LX.R58 AS5742ZG-P614G32Mnkk EM East 01.001 LX.R5Q Gctwn LX.R5R ARKXT512C Wxgag11PGE1GBC Wxgag Gctwn LX.R5P AS5742ZG Baltic LX.R58 AS5742ZGP AS5742ZG Spain LX.R5P 1G-DDR3 SO2GBI LX.R5R 1G-DDR3 SO2GBISO1GBI Gctwn LX.R5R 1G-DDR3 SO2GBI SO2GBI SO1GBI LX.R5R 1G-DDR3 SO2GBI SO1GBI AS5742ZG Cyprus LX.R58 512M LX.R5Q 1G-DDR3 SO2GBI SO2GBI SO4GBI LX.R5P NSM8XS LX.R5R NSM8XSLX.R5A NSM8XS Gctwn LX.R5R NSM8XS AS5742ZG Poland LX.R5Q NSM8XS 272 Chapter Appendix B Microsoft Windows 7 Environment TestVendor Type Description Adapter Audio Codec HDD Vendor Type DescriptionCamera LAN VGA Chip NB ChipsetSoftware Vendor Type Description WiFi Antenna Wireless LAN 278 Online Support Information Appendix C 280 Index 282