LCD Failure, Built-In Keyboard Failure | Acer 4240 instruction

LCD Failure

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

Built-In Keyboard Failure

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

Chapter 4

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Acer 4240 manual LCD Failure, Built-In Keyboard Failure

Contents

Aspire 4540/4240 Series Service Guide Revision History III Copyright Conventions Preface Page Table of Contents Viii Troubleshooting 137 Microsoft Windows 7 Environment Test Aspire 4540/4240 Series Table of Contents Chapter Features Privacy control Dimensions and WeightPower subsystem Communication Environment System Block Diagram Icon Description Your Acer Notebook tourHDD Closed Front View Hdmi Left View Right View Icon Function Description Bottom View Function Left Button Right Button Main touchpad Touchpad Basics with fingerprint reader Fn + F11 Using the KeyboardDesired access Num Lock on Num Lock off Lock key Description Key Description Windows Keys Euro symbol Using the System UtilitiesUS dollar sign Acer GridVista dual-display compatible System Board Major Chips Specifications Hardware Specifications and ConfigurationsProcessor Specification Processor Specifications 1MB Smbios Memory Combinations Slot Total Memory System Memory Specifications RPM Hard Disk Drive Interface Specifications Rate Mbytes/sec Max DC Power Requirements Voltage LCD Specification Super-Multi Combo Module Specification Bluetooth Specification VGA Graphic Controller SpecificationKeyboard Specification Audio Interface Specification Sony AS-2007A Finger Print Reader SpecificationBattery Pifa Navigating the Bios Utility Bios Setup Utility Parameter Description Information IDE Ahci Enables or disables the Press F12 to display bootDisabled Main Clear or Set Disabled orSecurity Parameter Description Option Removing a Password Setting a Password Enter New Password Changing a Password USB CD/DVD ROM Boot Cmos Exit Bios Flash Utilities DOS Flash Utility Flash process begins as shown WinFlash Utility Progress screen displays Chapter Remove HDD Password Remove HDD/BIOS Password Utilities Cleaning Bios Passwords Removing Bios Passwords Using DMITools Using Boot Sequence SelectorMiscellaneous Utilities Using the LAN MAC Eeprom Utility DOS mode, run the MAC.BAT file to write MAC values to eeprom Disassembly Requirements Machine Disassembly and Replacement Main Screw List Description Quantity Acer P/N Pre-disassembly InstructionsDisassembly Process General Information External Modules Disassembly Flowchart External Module Disassembly ProcessScrew List Step Quantity Removing the Battery Pack Removing the SD Dummy Card Dimm Removing the Lower Covers Remove the HDD Cover as shown Chapter Removing the Wlan Module Step Size Quantity Screw Type Wlan Module M2*3 Removing the Dimm Modules 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 Disk Drive Module Step Size Quantity Screw Type ODD Bracket M2*3 Main Unit Disassembly Flowchart Main Unit Disassembly Process Step Size Quantity Screw Type Hinge Covers M2*3 Removing the Hinge Covers Step Size Quantity Screw Type Removing the Switch Cover Chapter Removing the Keyboard Step Size Quantity Screw Type Speaker Module M2.5*3 Removing the Speaker ModulePage Step Size Quantity Screw Type LCD Module M2.5*5 Removing the LCD ModulePage Chapter Remove the two securing screws from the left LCD hinge Remove the two securing screws from the right LCD hinge Removing the Upper Cover Chapter Page Removing the Finger Print Reader Page Removing the TouchPad Bracket Remove the two screws from the TouchPad Bracket Removing the RTC Battery Removing the Bluetooth Module Bluetooth Module Step Size Quantity Screw Type USB Board M2.5*3 Removing the USB Board Step Size Quantity Screw Type Modem Module M2*3 Removing the Modem ModulePage Step Size Quantity Screw Type Mainboard M2.5*3 Removing the Mainboard Removing the RJ-11 Port Chapter Step Size Quantity Screw Type Thermal Module 5*3.2 Removing the Thermal Module Chapter Removing the CPU LCD Module Disassembly Flowchart LCD Module Disassembly Process Step Size Quantity Screw Type LCD Bezel M2.5*5 Removing the LCD Bezel Lift the bezel away from the panel Step Size Quantity Screw Type Camera Module M2.5*3 Removing the Camera Module Removing the LCD Panel Lift the LCD Panel out of the casing as shown Chapter Removing the LCD Brackets and FPC Cable Removing the Antennas Removing the MIC Module Replacing the MIC Module LCD Module Reassembly ProcedureReplacing the Antennas Chapter Page Replacing the LCD Panel Page Replacing the Camera Module Replacing the LCD Bezel Replacing the CPU Main Module Reassembly Procedure Replacing the Thermal Module Connect fan cable to the mainboard as shown Replacing the RJ-11 Port Replacing the Mainboard Insert the single securing screw Replacing the USB Board Replacing the Bluetooth Board 110 Chapter Replacing the Modem Module Replacing the TouchPad Bracket Page Replacing the Finger Print Reader Replace the single securing screw Chapter 115 Replacing the Upper Cover Page Replace the two securing screws in the Upper Cover Replacing the LCD Module Reconnect the Microphone cable to the Mainboard as shown Page 122 Chapter Replacing the Speaker Module Replacing the Keyboard Page Replacing the Switch Cover Step Size Quantity Screw Type Replacing the Hinge Covers Replacing the ODD Module External Module Reassembly Process Replacing the Hard Disk Drive Module Replace the four securing screws two each side Replacing the Wlan Module Replacing the Dimm Modules Replace the two screws to secure the module Replacing the SD Dummy Card Replacing the Lower Covers Replacing the Battery 136 Chapter 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 Select Set up microphone Microphone ProblemsInternal Microphone Failure Select Repair your computer HDD Not Operating CorrectlySelect Startup Repair ODD Not Operating Correctly ODD Failure Discs Do Not Play Drive Not Detected Modem Function Failure USB Failure Rightside Bluetooth Function Failure Wireless Function Failure Media Board Failure EasyTouch Button Failure Thermal Unit Failure Fingerprint Reader Failure Other Failures External Mouse Failure Undetermined Problems Intermittent Problems Code Description Post Codes TablesSec Memory BDS & Specific action Each Driver entry point used in 80PORT Each Peim entry point used in 80PORT Savememoryconfig CF9RESETBootpriority Fvbservice Fwblockservice LegacybiosLegacybiosplatform Setuputility Each SmmDriver entry point used in 80PORT Top View Bottom View JPLINE1 JUSB1JHP1 Vram JMIC1 Description Location Clear Cmos Jumper Memory bay Clearing Password CheckSteps for Clearing Bios Password Check Hardware Open Gap Description Steps for Bios Recovery by Crisis Disk Bios Recovery by Crisis DiskBios Recovery Boot Block Bios Recovery Hotkey 166 Chapter FRU Field Replaceable Unit List Main Module Aspire 4540/4240 Exploded DiagramsCPU Base Cable Category Description Acer PN BatteryAspire 4540/4240 FRU List Board Category Description Acer PN Case/Cover/Bracket Assembly Mini Card Bracket Hinge CAP LHinge CAP R HDD Bracket Keyboard Acer AC4T JV40 Internal KeyboardStandard 87KS Black Nordic Texture Combo Drive Super Multidrive LED LCD Samsung 14 Wxga Glare LTN140AT01 Assy LCD Module 14 Wxga Glare W/ AntennaCAMERA, IMR LED LCD AUO 14 Wxga Glare B140XW01 V0 0A LF LED LCD AUO 14 Wxga Glare B140XW01 V0 1A LF Antenna Mimo R-3X3 Lvds Cable W/O Cmos LCD Bezel W/O Cmos Miscellaneous Screw List33.PAA02.006 Speaker Chapter 179 AAP Appendix aAspire 4540/4240 Series Model Country Acer Part No Description 181 Model Country Acer Part No Description CHI AclaUSA Model Country Acer Part No Description 185 Model Country Acer Part No Description 187 Memory Chip Model NLED14WXGAG UMA SO2GBII6 SO1GBII6 Appendix a 190 NSM8XS ATUM600 NLED14WXGAG UMA SO1GBII6ATUM620 NLED14WXGAG UMA SO1GBII6 Media Processor Extra SW1 NBDCB4XS AS4540-302G25Mn N250GB5.4KS Model Card Reader Wireless LAN1 Bluetooth Voip Phone 195 1-Build 3rd WiFi 1x2 BGN Appendix a 196 197 Appendix a 198 Appendix B Test Compatible Components Audio Codec Microsoft Windows 7 Environment TestBOMName Type Description Adapter Camera Type DescriptionCard Bus1 Finger Print Reader WD5000BEVT-22ZAT0 ML250 Sata LF F WD3200BEVT-22ZCT0 ML160 Sata LF F 204 LPL NLED14WXGAG Acer AC4TAUO NLED14WXGAG Samsung NLED14WXGAG Memory Northbridge Chipset Modem AMD AMDSB710 AMD SB710 Southbridge ChipsetSoftware VGA Chip WiFi Antenna 210 Appendix C Online Support Information 212 Index ODD