Wireless Function Failure, Thermal Unit Failure | Acer 4820T

Wireless Function Failure

If the WLAN fails, perform the following actions one at a time to correct the problem. Do not replace a non- defective FRUs:

Thermal Unit Failure

If the Thermal Unit fails, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs:

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Chapter 4

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Acer 4820T manual Wireless Function Failure, Thermal Unit Failure

Contents

Acer Aspire 4820T Service Guide Revision History Copyright III Conventions Preface Page System Specifications Troubleshooting FRU Field Replaceable Unit List Page Table of Contents Troubleshooting 103 Acer TBD Series Microsoft Windows 7 Environment Test Table of Contents Features Chapter Storage Mini CardAudio Optical Drive Privacy control Dimensions and weightPower subsystem Special keys and controls Optional Items Warranty Environment System Block Diagram Intel Your Acer Notebook tour Front ViewIcon Description HDD Closed Front View Left ViewHdmi Right View Indicators Bottom ViewIcon Function Description HDD TouchPad 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 BiosCPU 4GB System Memory SpecificationWireless Module Specification Manufacturer Intel WiFi Link Memory Combinations Slot Total Memory LAN Module Specification Bluetooth Specification Hard Disk Drive Interface Specification Super-Multi Drive Module Audio Interface Specification SANYO/SONY/PANASONIC/SAMSUNG/SIMPLO AS2009A Power and Keyboard Controller SpecificationBattery Specification Cell LCD Card Reader Specification Chapter Bios Setup Utility Navigating the Bios Utility Parameter Description Aspire 4820T BiosInformation Uuid Main Parameter Description Format/Option Parameter Description Option Disabled orSecurity Clear or Set Setting a Password Removing a Password Changing a Password Continue Boot USB Cdrom Exit Cmos Bios Flash Utilities DOS Flash Utility USB HDDPage WinFlash Utility Remove HDD/BIOS Password Utilities Remove HDD Password Removing Bios Passwords Cleaning Bios Passwords Using Boot Sequence Selector Output Using DMIToolsInput Input dmitools /wu Using the LAN MAC Eeprom Utility Chapter Machine Disassembly and Replacement Disassembly Requirements General Information Pre-disassembly InstructionsDisassembly Process Main Screw List Quantity Part Number External Module Disassembly Process External Modules Disassembly FlowchartScrew List Step Quantity Removing the Battery Pack Removing the SD dummy card Removing the SIM card Removing the Lower Cover Removing the Optical Drive Module Step Size Quantity Screw Type ODD Module M2.5*4L Step Size Quantity Screw Type ODD Bracket M2.0*3L Removing the Dimm Modules Removing the Wlan Module Step Size Quantity Screw Type Wlan Board M2.0*3 Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3.0*4L Main Unit Disassembly Process Main Unit Disassembly Flowchart Removing the Keyboard Step Size Quantity Screw TypePage Removing the Upper Cover Page Remove the eight 8 screws from the top cover Removing the Power Switch Board Removing the Function Board Step Size Quantity Screw Type Function Board M2.0*3widehead Removing the Left Speaker Module Step Size Quantity Screw Type Speaker Module M2.5*4L Removing the USB Board Step Size Quantity Screw Type USB Board M2.5*4L Lift the USB Board upward away from the chassis Chapter Removing the 3G Module Step Size Quantity Screw Type 3G Module M2.5*4L Removing the Bluetooth Module Step Size Quantity Screw Type Bluetooth Board M2.3*3L Removing the LCD Module Step Size Quantity Screw Type LCD Module M2.5*6.5 Removing the Mainboard Step Size Quantity Screw Type Mainboard M2.5*4L Removing the Thermal Module Removing the CPU Removing the RTC Battery Removing the WiFi Antenna Cable Removing the Right Speaker Removing the DC-In Cable Step Size Quantity Screw Type DC-In Cable M2.5*4 LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Step Size Quantity Screw Type LCD Bezel M2.5*4 Removing the Camera Module Removing the LCD Panel Step Size Quantity Screw Type LCD Panel M2.3*3 Removing the FPC Cable Removing the Microphone Module Removing the HingesStep Size Quantity Screw Type LCD Hinges M2.5*3 Removing the Antennas Chapter LCD Module Reassembly Procedure Replacing the MIC and WiFi Antennas Replacing the Microphone Module Replacing the FPC Cable Replacing the LCD Panel Replacing the Webcam Replacing the LCD Bezel Replace the two screws and screw caps as shown Main Module Reassembly Procedure Replacing the DC-In Cable Replacing the LCD Module Replacing the Right Speaker Replacing the RTC Battery Replacing the CPU Replacing the Thermal ModulePage Replacing the Mainboard Replacing the Bluetooth Module Replacing the 3G Module Replacing the USB Board Replacing the Left Speaker Module Replacing the Switch Board Replacing the Function Board Replacing the Upper Cover Page 104 Chapter Replacing the Keyboard Replacing the Hard Disk Drive Module 106 Chapter Replacing the Wlan Board Replacing the Dimm ModulesInsert the Wlan board into the Wlan socket Replacing the ODD Module Replacing the Lower Covers Replacing the Dummy Card Replacing the SIM card Replacing the Battery Pack 112 Chapter 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 Built-In Keyboard Failure TouchPad Failure Internal Speaker Failure Sound Problems Microphone ProblemsSelect Set up microphone 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 Thermal Unit Failure External Mouse Failure Other Failures Intermittent Problems Undetermined ProblemsDimm Post Code Range Phase Post Codes Peienterrecoverymode PEI Peimemoryinstall PEIPeiswitchstack PEI Peirecoverymediafound PEI Dxesmmcontrolerinit DXE Bdsinstallhotkey BDSBdsbeforepciioinstall BDS Dxelegacyinterrupt DXE Bdsentersetup BDS Bdsenumerateallbootoption BDSBdsendofbootselection BDS Bdsenterbootmanager BDS Functionality Name Include\ PostCode.h Phase Description 132 Chapter Top View Description Desciption RTC Mini Card Wlan PJ2 Power JackLAN FAN Conn Steps for Clearing Bios Password Check Clearing Password Check and Bios RecoveryClearing Password Check Description Location G1 / G2 Clear Cmos Jumpers WiFi Bay Bios Recovery Hotkey Bios Recovery by Crisis DiskBios Recovery Boot Block Steps for Bios Recovery from USB Storage FRU Field Replaceable Unit List Acer Aspire 4820T Exploded Diagrams LCD AssemblyDescription Acer P/N Chassis Assembly Wwan Minicard BEVT-22A23T0 STN HDD-BKTZQ1 ZR6FBZR6004,REV MBSG,PARK,SAM,BT WO Cpuassy BSQ Acer Aspire 4820T FRU List Category Part Name Description Acer Part Number SIM Board 26G SLBPNPGAS.P MK2565GSX-EUL S.P Sata 8MB LF F/WGJ001J Keyboard ZQ1 K/BUI S.P CABLE,ANTENNA*3, Hinge CAP Mainboard Mainboard UMA HM55 W/CARD ZQ1B MB Heatsink Thermal Module for 35W UMA ZQ1 Thermal Module Screw List Category Partname Description Acer Part Number Chapter 151 Appendix a Acer Aspire 4820T SeriesCountry Acer Description Luxembour Denmark LX.PSE AAP S2.PSE AS4820TG-432G64Mn W7HP64ATTW1 MC AS4820TG-436G64Mn EM W7HP64EMATZA1 MC AS4820TG-436G64Mn W7HP64ATLV1 MC AS4820TG-436G64Mn W7HP64ATFR1 MC AS4820TG-434G64Mn W7HP64ATDE1 MC AS4820TG-434G64Mn W7HP64ATEU7 MC LX.PSG AAP LX.PVL AAPS2.PVL LX.PSG Emea AS4820TG-433G32Mn EM W7HP64EMATTR1 MC AS4820TG-433G32Mn W7HP64ATBE1 MC AS4820TG-433G32Mn W7HP64ATES1 MC Gctwn LX.PSG TWN 02.034 PARKXT512Cks3V3 2*2G/500L/BT/6L3.0/5R Cbbgn1.3CALIT41 02.030 PARKXT512Cks3V3 2*2G/500L/BT/6L3.0/5R Cbbgn1.3CALLT11 LX.PSN AAP S2.PSGS2.PVM LX.PSN LX.PSN China LX.PSN Emea AS4820T-333G32Mn W7HP64ATNL1 MC UMACks3 2G+1G AS4820T-333G32Mn W7HP64ATFR1 MC UMACks3 2G+1G 02.041 2G/320/BT/6L3.0/5R/cbbgn1.3CALAR11 South Africa Model Country Acer BOM Name VGA ChipVram Gctwn LX.PSE AS4820TGMADISO 434G50Mn 02.147 S2.PSE AS4820TGMADISO 434G50Mn 02.099 436G64Mn 02.073 434G64Mn 02.049 LX.PVL AS4820TGMADISO Parkxt S2.PVL AS4820TGMADISOLX.PS AS4820TGPARKX DDR3 433G32Mn G02.10 T512Cks3V3 433G32Mn Europe G02.09 T512Cks3V3 Gctwn LX.PS AS4820TGPARKX 332G32Mn G0C.00 T512Cks3V3 434G50Mn Africa G02.04 T512Cks3V3 434G50Mn G02.02 T512Cks3V3 UMA S2.PS AS4820TGPARKXS2.PV AS4820TGPARKX Acla LX.PS 354G32Mn Portuguese N02.10 AS4820T China AS4820T Middle East AS4820T Baltic AS4820T Malaysia AS4820T Algeria AS4820T Holland HDD 1GB S2.PSModel Country Acer Part No Memory SO2GBIII10 AS4820TG Middle East LX.PSE02.166 SO4GBIII10 SO2GBIII10 SO2GBIII10 SO1GBIII10 SO4GBIII10 AS4820TG Middle East LX.PSE02.090 AS4820TG Eastern LX.PSE02.064 AS4820TG Germany LX.PSE02.039 AS4820TG Eastern LX.PSE02.013 AS4820TG South Africa LX.PSG02.117 AS4820TG Eastern LX.PSG02.091 AS4820TG Thailand LX.PSG02.068 AS4820TG Middle East LX.PSG02.045 Acla AS4820T China LX.PSN0C.005 AS4820T Latvia LX.PSN02.081 AS4820T Malaysia LX.PSN02.059 AS4820T Luxembour LX.PSN02.035 AS4820T Eastern LX.PSN02.010 Appendix a 212 Test Compatible Components Appendix B UNDP-1 Microsoft Windows 7 Environment TestVendor Description Cover DB A, LV5 LED LF AdapterDelta 65JH DB A, LV5 LED LF Hipro LITE-ON34AR, LV5 LED LF Audio Codec ALC271X NIC BatteryPanaso IDAS10B5E Samsun Sanyo Simplo Bluetooth Camera 222 Card Reader Intel Vendor Description CPU Intel Core i7 620M PGA 2.66G KC.62001.DM HDD N320GB5.4 Vendor Description 230 Seagat 232 Toshiba MK3265GSX Sata 8MB LF F/WGJ002J HDD Toshiba 2.5 5400rpm 500GB 22A23T0,ML320S,WD Sata 8MB LF F/W01.01A01 Appendix B 235 N500GB5.4 HDD WD 2.5 5400rpm 500GB WD5000BEVT 22A23T0,ML320S,WD Sata 8MB LF F/W01.01A01 Appendix B 237 LAN KeyboardAC4TA10B Acer NLED14WX AUO NLED14WX CMO NLED14WX LPL SO1GBIII10 Elpida NLED14WX SamsunMEM SO2GBIII10 Elpida SO1GBIII10 Hynix SO2GBIII10 Hynix SO4GBIII10 None SO1GBIII10 Samsun SO2GBIII10 Samsun Modem NSM8XS9.5 Hlds NB ChipsetODD NSM8XS9.5 Panaso NSM8XS9.5 Toshiba SB Chipset Software Madison AMD WiFi AntennaVGA Chip Parkxt AMD Wireless LAN BGN INT6300H Online Support Information Appendix C 216 Index 218