Acer EM250 guide

6.Run the WLAN Antennas over the yellow 3G Antenna, using the same cable channel and clips.

7.The Lower Cover appears as follows when all the LCD cables and Antennas are correctly placed.

•Blue callout—Main 3G Antenna cable

•Yellow callout—Aux 3G Antenna cable

•Red callout—Main and Aux WLAN Antennas

Chapter 3

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Acer EM250 manual

Contents

EMachines eM250 Series Service Guide Revision History III Copyright Conventions Preface Page Table of Contents Viii Troubleshooting 119 Windows XP Environment Test Jumper and Connector Locations 143 Table of Contents Chapter Features Communication PowerPrivacy control Special keys and controls ICH7M System Block Diagram Front View Your eMachines Notebook tourIcon Description Left View Closed Front View Rear and Base View Right View Icon Function Description IndicatorsHDD Function Left Button Right Button Main TouchPad TouchPad Basics Lock Keys and embedded numeric keypad Using the Keyboard Key Description Windows Keys Hotkey Icon Function Description Hot Keys Special Keys Euro symbolUS dollar sign Processor Specification Hardware Specifications and ConfigurationsProcessor Specifications System Storage Specification System Memory SpecificationHard Disk Drive Interface Specification LTN101NT02-A01, LPL LP101WSA-TLA1 LED Specification LAN Interface Specification Audio Codec and Amplifier SpecificationKeyboard Specification Lvds Camera Specification Mini Card Specification3G Card Specification Wireless LAN Specification Chapter Navigating the Bios Utility Bios Setup Utility Parameter Description InformationUuid Parameter Description Format/Option Main Security Enabled orParameter Description Option Clear or Set Removing a Password Setting a Password Continue Changing a Password USB Cdrom Boot Exit Exit Saving Changes Exit Bios Flash Utility USB HDD DOS Flash UtilityPage WinFlash Utility Removing HDD Password Remove HDD/BIOS Password UtilitiesPassword UnlockHD Cleaning Bios Passwords Removing Bios Passwords Using DMITools Using Boot Sequence SelectorMiscellaneous Utilities Example 1 Read DMI Information from Memory Using the LAN MAC Utility Execute MAC.BAT to write MAC information to eeprom Chapter Chapter Related Information Disassembly Requirements Disassembly Process Pre-disassembly InstructionsGeneral Information Main Screw List Quantity Part Number External Modules Disassembly Flowchart External Module Disassembly ProcessScrew List Step Quantity Removing the Battery Pack Step Size Quantity Screw Type Lower Covers M2*4 Removing the Lower Covers Chapter Step Size Quantity Screw Type HDD Module M2*4 Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3*3 Removing the Dimm Module Step Size Quantity Screw Type 3G Module M2*3 Removing the 3G Module Detach the 3G Module from the socket Chapter Main Unit Disassembly Flowchart Main Unit Disassembly Process Removing the Keyboard Disconnect the FFC and remove the Keyboard Step Size Quantity Screw Type Removing the Upper Cover Chapter Step Size Quantity Screw Type Upper Cover M2*4 Chapter Step Size Quantity Screw Type Power Board M2*3 Removing the Power Board Chapter Removing the Bluetooth Module Removing the TouchPad FFC Step Size Quantity Screw Type Wlan Board M2*3 Removing the Wlan Board Remove the Wlan Board from the Mainboard Step Size Quantity Screw Type USB Board M2*4 Removing the USB Board Chapter Removing the Mainboard Step Size Quantity Screw Type Mainboard M2*4 Page Removing the RTC Battery Step Size Quantity Screw Type Thermal Module M2*4 Removing the Thermal Module Lift the Thermal Module clear of the Mainboard Step Size Quantity Screw Type Speaker Module M2*4 Removing the Speaker Module Chapter Removing the LCD Module Chapter Step Size Quantity Screw Type LCD Module M2*4 Removing the AC Power Jack LCD Module Disassembly Flowchart LCD Module Disassembly Process Step Size Quantity Screw Type LCD Bezel M2*4 Removing the LCD BezelPage Removing the Camera Board Step Size Quantity Screw Type LCD Panel M2*4 Removing the LCD Panel Chapter Step Size Quantity Screw Type LCD Brackets M2*3 Removing the LCD Brackets and FPC Cable Step Size Quantity Screw Type Hinge Covers M2*3 Left Right Bracket Removing the Antennas Chapter Page Replacing the Antennas LCD Module Reassembly ProcedurePage 3G and Wlan Models Wlan Only Models Replacing the LCD Cable and Brackets Left Right Bracket Page Replacing the LCD Panel Replacing the Camera Board Connect the Camera cable as shown Replacing the LCD Bezel Replacing the AC Power Jack Main Module Reassembly Procedure Replacing the LCD Module Chapter Page Replacing the Speaker Module Replacing the Thermal Module Replacing the Mainboard Page Replacing the USB Board Replacing the Wlan Board Replacing the TouchPad FFC Replacing the Bluetooth ModulePage Replacing the Power Board Page Replacing the Upper Cover Page Connect B to the Mainboard Replacing the 3G Module Replacing the Keyboard 114 Chapter Replacing the Hard Disk Drive Module Replacing the Dimm Module Replace the single screw to secure the HDD in place Replacing the Lower Covers Replacing the Battery Pack Symptoms Verified Go To Common Problems Computer Shuts down Intermittently Power On IssueSW/B No Post or Video No Display Issue Abnormal Video Display Random Loss of Bios Settings Built-In Keyboard Failure LCD Failure FFC TouchPad Failure Internal Speaker Failure Sound Problems 126 Chapter Select Set up microphone Microphone ProblemsInternal Microphone Failure Select Repair your computer HDD Not Operating CorrectlySelect Startup Repair USB Failure Rightside Wireless Function Test Failure 3G Function Test Failure Switch Failure Thermal Units Failure Power Button Failure Other Failures External Mouse Failure Undetermined Problems Intermittent ProblemsDimm Motherboard Cmos Discharge Sec Post Code Reference TablesMemory Code Description BDS & Specific action Each Driver entry point used in 80PORT Each Peim entry point used in 80PORT Bootpriority CF9RESETFvbservice Smbios Legacybiosplatform LegacybiosSetuputility Fwblockservice Each SmmDriver entry point used in 80PORT Top View Bottom View SW1 Power boardLED1 JUSB2 Card reader boardJREAD1 LED2 3GWWAN LED JSATA1 Clearing Password Check Clearing Password Check and Bios RecoverySteps for Clearing Bios Password Check Hardware Open Gap Description Bios Recovery Boot Block Bios Recovery by Crisis DiskBios Recovery Hotkey Steps for Bios Recovery by USB Flash Crisis Disk FRU Field Replaceable Unit List Main Assembly EMachines eM250 Exploded DiagramsDescription Part Number Rear Assembly Upper Cover Assembly Lower Cover Assembly LCD Assembly EMachines eM250 FRU List Power BoardAcerPN Acer Description 04AC LF Blue Tooth Cable IO BoardDC-IN CABLE-30W IO Board Cable AcerPN Acer Description 42.S6802.004 HDD DOOR-BLACK 158 Chapter 159 ANTENNA, CCD, Black LCDLCD Hinge Cover R-BLACK LCD Hinge Cover L-BLACK Acer Description Acer PN Screw List Appendix a Model Definition and Configuration Model eM250-01G16 EMachines eM250 Series Appendix a 166 Switzerl LX.N970 EM250-01G16i AOXPHeTCH1 UMACks 1*1G/160 Appendix a 168 Gctwn Model eM250-01G25i Model eM250-02G16i Appendix a 172 Appendix B Test Compatible Components Vendor Type Description Item No Windows 7 Environment Test Vendor Type Description Item No Intel ATMN280B CPU Intel ATMN270BHDD Seagate Toshiba Hynix SO512MBII Samsung SO512MBIINanya SO1GBII6 178 UMA ICH7M 180 Appendix C Online Support Information 182 Index 184 ODD 129 186