Touch Pad Failure, Internal Speaker Failure | Acer 5742G, 5742Z

Touch Pad Failure

If the Touch Pad doesn’t work, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRU:

Internal Speaker Failure

If the internal Speakers fail, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRU:

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Chapter 4

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Acer 5742G, 5742ZG manual Touch Pad Failure, Internal Speaker Failure

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 Optical Media Drive GraphicsStorage Webcam Privacy control Wireless and networkingPower adapter and battery Wlan Input and control Dimensions and weightWarranty Input and output Software System Block Diagram UMA Discrete nVidia Discrete ATI Your Acer Notebook tour Top ViewIcon Description Battery bay Houses the computers battery pack Rear view Left View Right View Base view Indicators Icon Function DescriptionHDD Touch Pad Basics Function Left Button Right Button Main TouchPad Using the Keyboard Lock Keys and embedded numeric keypadLock key Description Windows Keys Key Description Hot Keys Hotkey Icon Function Description Hardware Specifications and Configurations CPU System Memory Specification 512MB,1GB,2GB,4GB DDR3 RAM Memory Combinations Slot Total Memory BiosLAN Interface Specification 0MB Keyboard Specification Hard Disk Drive Interface Specification Bluetooth Interface Specification Audio Interface SpecificationLED Specification Camera Specification LCD Inverter not available with this model SpecificationLCD Display Supported Resolution Bits Intel 3G Module not available with this model Specification Audio Codec and Amplifier Specification Wireless Module 802.11b/g/n SpecificationBattery Specification Vram Nvidia Vram ATI AC Adapter UMA Specification System Board Major Chips SpecificationPorts Specification AC Adapter nVidia Specification AC Adapter ATI Specification System Power Management Legacy Specification ModeCard Reader UMA & Discrete Specification System LED Indicator Specification Chapter Bios Setup Utility Navigating the Bios Utility Parameter Description Aspire 5742/5742G/5742Z/5742ZG BiosInformation Uuid Disabled MainParameter Description Format/Option Parameter Description Option Disabled orSecurity 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 Password Remove HDD/BIOS Password UtilitiesRemove HDD Password UnlockHD Removing Bios Passwords Cleaning Bios Passwords Using Boot Sequence Selector Using DMITools InputOutput Chapter Machine Disassembly and Replacement Disassembly Requirements Pre-disassembly Instructions Screw 2.5D Disassembly ProcessMain Screw List Quantity Part Number Screw 3.0D External Module Disassembly Process External Modules Disassembly FlowchartScrew List Step Quantity 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 Screw Assy Main Unit Disassembly ProcessMain Unit Disassembly Flowchart 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 Removing the Bluetooth Board DiscreteUMA 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 Replacing the Thermal Module Mastro B6VGA/RAM PAD 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 Problems Select Set up microphoneMicrophone Record Failure USB Failure Right side HDD Not Operating Correctly Select Repair your computerSelect Startup Repair 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 Intermittent Problems Undetermined ProblemsDimm Post Code Range Phase Post Codes Peienterrecoverymode PEI Peimemoryinstall PEIPeiswitchstack PEI Peirecoverymediafound PEI Bdsbeforepciioinstall BDS Dxesmarttimerinit DXEBdsinstallhotkey BDS Dxemtcinit DXE Bdsentersetup BDS Bdsenumerateallbootoption BDSBdsendofbootselection BDS Bdsenterbootmanager BDS Functionality Name Include\ PostCode.h Phase Description Smmacpidisablestart SMM Smmacpienablestart SMMSmmacpienableend SMM Smmacpidisableend SMM SW1/SW2 JTP1JUSB2 JMIC2 LED2 Discrete nVidiaFFC SW2/SW3 JKB1 Discrete ATIJSPK2 JP1 Bottom View Connect to Wlan USB connector U34 USB Connector USB/B BoardDescription PEW71/91 Wlan LED Power BoardPEW71/91 ON/OFF LED PEW71/91 Media LED SW1 PEW71/91 Media LED PEW51 Wlan LEDPEW51 Media LED SW1 PEW71/91 ON/OFF LED LED10 PEW71/91 Wlan LED PEW71/81/91 Media LED LED11PEW51 Media LED LED12 PEW51 Wlan LED SW1 CR/B Board JREAD1JREAD2 ODD connector ODD BoardJODD2 Steps for Clearing Bios Password Check Clearing Password Check and Bios RecoveryClearing Password Check Clear Cmos Jumper R671/R675 Clear Cmos Jumper Bios Recovery Hotkey Bios Recovery by Crisis DiskBios Recovery Boot Block Steps for Bios Recovery from USB Storage 198 Chapter FRU Field Replaceable Unit List Aspire Exploded Diagrams Main AssemblyDescription Acer P/N Discrete Uniload DOOR-DIS Lower CoverUniload DOOR-UMA 3G DOOR-DIS LCD Assembly LED Assembly Category Description BatteryAspire FRU List Adapter Cable CASE/COVER/BRACKET Assembly CPU/PROCESSOR PCB Sata 8MB LF F/W0001SDM1 HDD/HARD Disk DriveSata 8MB LF F/W0001SDM1 22ZEST0, ML320S, 4K Drive Sata 8MB LF F/W Keyboard BD Combo Drive DVD RW DriveLCD Antenna WLAN-MAIN LCD Cover IMR-BLACKLCD Bezel for W/CMOS 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 LCD Samsung 15.6W Wxga Glare LED Cable for W/CMOSLED Bracket R&L 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 LCD Bezel for W/O Cmos LCD Cable for W/O CmosANTENNA*2, W/O CCD, Silver LCD Cover IMR-SILVER 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 Heatsink SpeakerMiscellaneous Acer Description Screw ListCategory Screw 230 Chapter Appendix a Aspire 5742/5742GModel Country Acer Part No Description W7HP64ASNL1 MC W7HP64ASBE1 MCW7HP64ASDE1 MC W7HP64ASLU3 MC W7HP64ASDK2 MC TWN GctwnW7HP64ASTW1 MC W7HP64ASPL1 MC W7HP64ASIT1 MC W7HP64ASFR1 MCW7HP64EMASME2 MC W7HP64EMASTR1 MC W7HP64EMASZA2 MCW7HP64ASCH1 MC W7HP64ASGB1 MC W7HP64KASKR1 MC China LX.R5D01.001 AS5742G-5462G32Mnrr W7HP64ASCZ2 MC Germany LX.R5302.028 AS5742G-5464G64Bnkk Model Country Acer BOM Name CPU LCD VGAChip NLED15 N11PG LX.R5CLX.R5D AS5742G Turkey LX.R53 AS5742GN11P AS5742G Switzerland LX.R52 5463G50Mnkk 01.008 GE1GBCkk3V3 Memory Model Country AcerVram HDD 1GB SO2GBI SO2GBII SO2GBI SO1GBII1G-DDR3 SO2GBI SO2GBII SO2GBI SO4GBII LX.R5D 1G-DDR3 SO2GBI 1G-DDR3 SO2GBI SO1GBIILX.R5C 1G-DDR3 SO2GBI SO2GBII LX.R5D 1G-DDR3 SO2GBI SO2GBII 1G-DDR3 SO4GBI SO4GBII 5464G50Mncc 005 Wireless Bluetooth Adapter ODDLAN1 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 ARKXT512C Wxgag 11PGE1GBC WxgagGctwn LX.R5R Gctwn LX.R5P AS5742ZG Baltic LX.R58 AS5742ZGP AS5742ZG Spain SO1GBI LX.R5P 1G-DDR3 SO2GBILX.R5R 1G-DDR3 SO2GBI 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.R5A NSM8XS LX.R5P NSM8XSLX.R5R NSM8XS Gctwn LX.R5R NSM8XS AS5742ZG Poland LX.R5Q NSM8XS 272 Chapter Vendor Type Description Adapter Appendix BMicrosoft Windows 7 Environment Test Audio Codec Vendor Type Description CameraHDD LAN NB Chipset SoftwareVGA Chip Vendor Type Description WiFi Antenna Wireless LAN 278 Online Support Information Appendix C 280 Index 282