Chapter | Acer EM250 specification

4.Turn the board over to expose the cable connector. Detach the adhesive strip holding the cable in place.

5.Disconnect the cable from the USB Board.

6.Remove the USB Board from the Lower Cover.

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Chapter 3

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Acer EM250 manual Chapter

Contents

EMachines eM250 Series Service Guide Revision History Copyright III Conventions Preface Page Table of Contents Troubleshooting 119 Viii Jumper and Connector Locations 143 Windows XP Environment Test Table of Contents Features Chapter Power CommunicationPrivacy control Special keys and controls System Block Diagram ICH7M Your eMachines Notebook tour Front ViewIcon Description Closed Front View Left View Right View Rear and Base View Indicators Icon Function DescriptionHDD TouchPad Basics Function Left Button Right Button Main TouchPad Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Key Description Hot Keys Hotkey Icon Function Description Euro symbol Special KeysUS dollar sign Hardware Specifications and Configurations Processor SpecificationProcessor Specifications System Memory Specification System Storage SpecificationHard Disk Drive Interface Specification LED Specification LTN101NT02-A01, LPL LP101WSA-TLA1 Audio Codec and Amplifier Specification LAN Interface SpecificationKeyboard Specification Lvds Mini Card Specification Camera Specification3G Card Specification Wireless LAN Specification Chapter Bios Setup Utility Navigating the Bios Utility Information Parameter DescriptionUuid Main Parameter Description Format/Option Enabled or SecurityParameter Description Option Clear or Set Setting a Password Removing a Password Changing a Password Continue Boot USB Cdrom Exit Exit Exit Saving Changes Bios Flash Utility DOS Flash Utility USB HDDPage WinFlash Utility Remove HDD/BIOS Password Utilities Removing HDD PasswordPassword UnlockHD Removing Bios Passwords Cleaning Bios Passwords Using Boot Sequence Selector Using DMIToolsMiscellaneous Utilities Using the LAN MAC Utility Example 1 Read DMI Information from Memory Execute MAC.BAT to write MAC information to eeprom Chapter Chapter Disassembly Requirements Related Information Pre-disassembly Instructions Disassembly ProcessGeneral Information Main Screw List Quantity Part Number External Module Disassembly Process External Modules Disassembly FlowchartScrew List Step Quantity Removing the Battery Pack Removing the Lower Covers Step Size Quantity Screw Type Lower Covers M2*4 Chapter Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Module M2*4 Step Size Quantity Screw Type HDD Carrier M3*3 Removing the Dimm Module Removing the 3G Module Step Size Quantity Screw Type 3G Module M2*3 Detach the 3G Module from the socket Chapter Main Unit Disassembly Process Main Unit Disassembly Flowchart Removing the Keyboard Disconnect the FFC and remove the Keyboard Removing the Upper Cover Step Size Quantity Screw Type Chapter Step Size Quantity Screw Type Upper Cover M2*4 Chapter Removing the Power Board Step Size Quantity Screw Type Power Board M2*3 Chapter Removing the Bluetooth Module Removing the TouchPad FFC Removing the Wlan Board Step Size Quantity Screw Type Wlan Board M2*3 Remove the Wlan Board from the Mainboard Removing the USB Board Step Size Quantity Screw Type USB Board M2*4 Chapter Removing the Mainboard Step Size Quantity Screw Type Mainboard M2*4 Page Removing the RTC Battery Removing the Thermal Module Step Size Quantity Screw Type Thermal Module M2*4 Lift the Thermal Module clear of the Mainboard Removing the Speaker Module Step Size Quantity Screw Type Speaker Module M2*4 Chapter Removing the LCD Module Chapter Step Size Quantity Screw Type LCD Module M2*4 Removing the AC Power Jack LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Step Size Quantity Screw Type LCD Bezel M2*4Page Removing the Camera Board Removing the LCD Panel Step Size Quantity Screw Type LCD Panel M2*4 Chapter Removing the LCD Brackets and FPC Cable Step Size Quantity Screw Type LCD Brackets M2*3 Left Right Bracket Step Size Quantity Screw Type Hinge Covers M2*3 Removing the Antennas Chapter Page LCD Module Reassembly Procedure Replacing the AntennasPage 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 Main Module Reassembly Procedure Replacing the AC Power Jack 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 Bluetooth Module Replacing the TouchPad FFCPage Replacing the Power Board Page Replacing the Upper Cover Page Connect B to the Mainboard Replacing the Keyboard Replacing the 3G Module 114 Chapter Replacing the Dimm Module Replacing the Hard Disk Drive Module Replace the single screw to secure the HDD in place Replacing the Lower Covers Replacing the Battery Pack Common Problems Symptoms Verified Go To Power On Issue Computer Shuts down IntermittentlySW/B No Display Issue No Post or Video Random Loss of Bios Settings Abnormal Video Display LCD Failure Built-In Keyboard Failure TouchPad Failure FFC Sound Problems Internal Speaker Failure 126 Chapter Microphone Problems Select Set up microphoneInternal Microphone Failure HDD Not Operating Correctly Select Repair your computerSelect Startup Repair USB Failure Rightside Wireless Function Test Failure 3G Function Test Failure Switch Failure Power Button Failure Thermal Units Failure External Mouse Failure Other Failures Intermittent Problems Undetermined ProblemsDimm Motherboard Cmos Discharge Post Code Reference Tables SecMemory Code Description BDS & Specific action Each Peim entry point used in 80PORT Each Driver entry point used in 80PORT CF9RESET BootpriorityFvbservice Smbios Legacybios LegacybiosplatformSetuputility Fwblockservice Each SmmDriver entry point used in 80PORT Top View Bottom View Power board SW1LED1 Card reader board JUSB2JREAD1 LED2 3GWWAN LED JSATA1 Clearing Password Check and Bios Recovery Clearing Password CheckSteps for Clearing Bios Password Check Hardware Open Gap Description Bios Recovery by Crisis Disk Bios Recovery Boot BlockBios Recovery Hotkey Steps for Bios Recovery by USB Flash Crisis Disk FRU Field Replaceable Unit List EMachines eM250 Exploded Diagrams Main AssemblyDescription Part Number Rear Assembly Upper Cover Assembly Lower Cover Assembly LCD Assembly Power Board EMachines eM250 FRU ListAcerPN Acer Description 04AC LF IO Board Blue Tooth CableDC-IN CABLE-30W IO Board Cable AcerPN Acer Description 42.S6802.004 HDD DOOR-BLACK 158 Chapter 159 LCD ANTENNA, CCD, BlackLCD Hinge Cover R-BLACK LCD Hinge Cover L-BLACK Screw List Acer Description Acer PN Model Definition and Configuration Appendix a EMachines eM250 Series Model eM250-01G16 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 Test Compatible Components Appendix B Windows 7 Environment Test Vendor Type Description Item No Vendor Type Description Item No CPU Intel ATMN270B Intel ATMN280BHDD Seagate Toshiba Samsung SO512MBII Hynix SO512MBIINanya SO1GBII6 178 ICH7M UMA 180 Online Support Information Appendix C 182 Index 184 ODD 129 186