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Acer 5742G, 5742ZG manual USB Failure Right side

Models: 5742ZG 5742G 5742 5742Z

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USB Failure (Right side)

If the USB (right side) fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRU:

Chapter 4

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Acer 5742G, 5742ZG manual USB Failure Right side

Contents

Aspire 5742/5742G/5742Z/5742ZG Series Service Guide Revision History III CopyrightConventions Preface Page Table of Contents Viii Aspire 5742Z/5742ZG Aspire 5742/5742GTable of Contents Chapter FeaturesStorage GraphicsOptical Media Drive WebcamPower adapter and battery Wireless and networkingPrivacy control WlanWarranty Dimensions and weightInput and control Input and outputSoftware UMA System Block DiagramDiscrete nVidia Discrete ATI Your Acer Notebook tour Top ViewIcon Description Rear view Battery bay Houses the computers battery packLeft View Right View Base view Indicators Icon Function DescriptionHDD Function Left Button Right Button Main TouchPad Touch Pad BasicsUsing the Keyboard Lock Keys and embedded numeric keypadLock key Description Key Description Windows KeysHotkey Icon Function Description Hot KeysCPU Hardware Specifications and Configurations512MB,1GB,2GB,4GB DDR3 RAM System Memory SpecificationLAN Interface Specification BiosMemory Combinations Slot Total Memory 0MBHard Disk Drive Interface Specification Keyboard SpecificationBluetooth Interface Specification Audio Interface SpecificationLED Specification LCD Display Supported Resolution Bits Intel LCD Inverter not available with this model SpecificationCamera Specification 3G Module not available with this model SpecificationAudio Codec and Amplifier Specification Wireless Module 802.11b/g/n SpecificationBattery Specification Vram ATI Vram NvidiaPorts Specification System Board Major Chips SpecificationAC Adapter UMA Specification AC Adapter nVidia SpecificationAC Adapter ATI Specification System Power Management Legacy Specification ModeCard Reader UMA & Discrete Specification System LED Indicator Specification Chapter Navigating the Bios Utility Bios Setup UtilityInformation Aspire 5742/5742G/5742Z/5742ZG BiosParameter Description UuidDisabled MainParameter Description Format/Option Security Disabled orParameter Description Option Clear or SetRemoving a Password Setting a PasswordContinue Changing a PasswordIDE1 HL-DT-STDVDRAM GT32N BootExit Exit Saving Changes ExitBios Flash Utilities Stdvdram GT32N DOS Flash UtilityWinFlash Utility Remove HDD Password Remove HDD/BIOS Password UtilitiesPassword UnlockHDCleaning Bios Passwords Removing Bios PasswordsUsing Boot Sequence Selector Using DMITools InputOutput Chapter Disassembly Requirements Machine Disassembly and ReplacementPre-disassembly Instructions Main Screw List Quantity Part Number Disassembly ProcessScrew 2.5D Screw 3.0DExternal Module Disassembly Process External Modules Disassembly FlowchartScrew List Step Quantity Removing the Battery Pack Removing the SD Dummy Card Step Size Quantity Screw Type ODD Module M2.5*8 Removing the ODD ModuleStep Size Quantity Screw Type ODD Bracket M2*3 Step Size Quantity Screw Type Logic lower door M2.5*8 Removing the Logic Lower DoorStep Size Quantity Screw Type 3G Cover M2.5*8 Removing the 3G Cover Discrete OnlyRemoving the RTC Battery UMA Only Remove the RTC battery from the lower cover as shown Removing the Dimm Module Step Size Quantity Screw Type Wlan Module M2*3 Removing the Wlan ModuleDetach 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 Flowchart Main Unit Disassembly ProcessScrew Assy CPU ThermalStep Size Quantity Screw Type Removing the Upper CoverChapter 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 Thermal Screw Assy CPURemoving the CPU See Removing the Mainboard on Removing the LCD ModulePage UMA Step Size Quantity Screw Type LCD Module M2.5*5 Removing the DC-In Assembly LCD Module Disassembly Flowchart LCD Module Disassembly ProcessStep Size Quantity Screw Type LCD Bezel M2.5*6 Removing the LCD BezelRemove the bezel from the LCD module Chapter Removing the CCD Module Step Size Quantity Screw Type Inverter Module M2.5*5 Removing the Inverter Module LCD Only102 Chapter Page Step Size Quantity Screw Type LCD Brackets M2.5*5 Removing the LCD/LED PanelPage Step Size Quantity Screw Type LCD Brackets M2*3 Removing the LCD BracketsLCD LED Removing the Lvds CableRemoving the Microphone Cable Lift the microphone set clear of the panel Chapter 109 Removing the Antennas Replacing the Antennas LCD Module Reassembly ProcedureReplacing 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 Replacing the DC-In Assembly Main Module Assembly ProcedureReplacing 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 Step Size Quantity Screw Type USB Board M2*3 Replacing the USB Board136 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 Symptoms Verified Go To Common ProblemsComputer Shutsdown Intermittently Power On IssueNo Post or Video No Display IssueAbnormal Video Display Random Loss of Bios SettingsInternal Keyboard Failure LCD FailureInternal Speaker Failure Touch Pad FailureSound Problems Microphone Problems Select Set up microphoneMicrophone Record Failure USB Failure Right side HDD Not Operating Correctly Select Repair your computerSelect Startup Repair ODD Not Operating Correctly ODD FailureDiscs Do Not Play Drive Not Detected Bluetooth Function Test Failure Wireless Function FailureThermal Unit Failure 1 card Function Test FailureCosmetic Failure External Mouse FailureOther Failures Intermittent Problems Undetermined ProblemsDimm Post Codes Post Code Range PhasePeiswitchstack PEI Peimemoryinstall PEIPeienterrecoverymode PEI Peirecoverymediafound PEIBdsinstallhotkey BDS Dxesmarttimerinit DXEBdsbeforepciioinstall BDS Dxemtcinit DXEBdsendofbootselection BDS Bdsenumerateallbootoption BDSBdsentersetup BDS Bdsenterbootmanager BDSFunctionality Name Include\ PostCode.h Phase Description Smmacpienableend SMM Smmacpienablestart SMMSmmacpidisablestart SMM Smmacpidisableend SMMJUSB2 JTP1SW1/SW2 JMIC2FFC Discrete nVidiaLED2 SW2/SW3JSPK2 Discrete ATIJKB1 JP1Bottom View Connect to Wlan USB connector U34 USB Connector USB/B BoardDescription PEW71/91 ON/OFF LED Power BoardPEW71/91 Wlan LED PEW71/91 Media LED SW1PEW71/91 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 Clearing Password Check Clearing Password Check and Bios RecoverySteps for Clearing Bios Password Check Clear Cmos JumperR671/R675 Clear Cmos Jumper Bios Recovery Boot Block Bios Recovery by Crisis DiskBios Recovery Hotkey Steps for Bios Recovery from USB Storage198 Chapter FRU Field Replaceable Unit List Aspire Exploded Diagrams Main AssemblyDescription Acer P/N Discrete Uniload DOOR-UMA Lower CoverUniload DOOR-DIS 3G DOOR-DISLCD Assembly LED Assembly Aspire FRU List BatteryCategory Description AdapterCable CASE/COVER/BRACKET Assembly CPU/PROCESSOR Sata 8MB LF F/W0001SDM1 HDD/HARD Disk DrivePCB Sata 8MB LF F/W0001SDM1 22ZEST0, ML320S, 4K Drive Sata 8MB LF F/WKeyboard BD Combo Drive DVD RW DriveLCD LCD Bezel for W/CMOS LCD Cover IMR-BLACKAntenna WLAN-MAIN Antenna WLAN-AUXANTENNA*2, CCD 1.3M, Brown LCD Cover IMR-BROWN ANTENNA*2, CCD 1.3M, RED LCD Cover IMR-RED ANTENNA*2, CCD 1.3M, Black LED Cover IMR-BLACK Assy LED Module 15.6W Wxga Glare WLED Bracket R&L LED Cable for W/CMOSLED LCD Samsung 15.6W Wxga Glare LED LCD BOE 15.6W Wxga Glare HT156WXBANTENNA*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 LED Cable for W/O Cmos ANTENNA*2, W/O CCD, Black LED Cover IMR-BLACKANTENNA*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 Memory MainboardHeatsink SpeakerMiscellaneous Category Screw ListAcer Description Screw230 Chapter Appendix a Aspire 5742/5742GModel Country Acer Part No Description W7HP64ASDE1 MC W7HP64ASBE1 MCW7HP64ASNL1 MC W7HP64ASLU3 MCW7HP64ASTW1 MC TWN GctwnW7HP64ASDK2 MC W7HP64ASPL1 MCW7HP64ASIT1 MC W7HP64ASFR1 MCW7HP64EMASME2 MC W7HP64ASCH1 MC W7HP64EMASZA2 MCW7HP64EMASTR1 MC W7HP64ASGB1 MCW7HP64KASKR1 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 Vram Model Country AcerMemory HDD 1GB1G-DDR3 SO2GBI SO2GBII SO2GBI SO1GBIISO2GBI SO2GBII SO2GBI SO4GBIILX.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.R5D NSM8XS LX.R5C NSM8XSAS5742G 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 Model Country Acer Description Aspire 5742Z/5742ZGW7HB64EMASME2 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 LX.R5R 1G-DDR3 SO2GBI LX.R5P 1G-DDR3 SO2GBISO1GBI Gctwn LX.R5R 1G-DDR3 SO2GBILX.R5R 1G-DDR3 SO2GBI SO1GBI SO2GBI SO1GBIAS5742ZG Cyprus LX.R58 512M SO2GBI SO4GBI LX.R5Q 1G-DDR3 SO2GBILX.R5R NSM8XS LX.R5P NSM8XSLX.R5A NSM8XS Gctwn LX.R5R NSM8XSAS5742ZG Poland LX.R5Q NSM8XS 272 Chapter Microsoft Windows 7 Environment Test Appendix BVendor Type Description Adapter Audio CodecVendor Type Description CameraHDD LAN NB Chipset SoftwareVGA Chip Wireless LAN Vendor Type Description WiFi Antenna278 Appendix C Online Support Information280 Index 282