Thermal Units Failure, Power Button Failure | Acer EM250 specs

Thermal Units Failure

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

START

Fan power

cable wellNo Connect it well connected?

Fan OK?

No

Replace fan

CPU	No	Seat it well
Heat sink well	No	Seat it well
seated?

Replace M/B

Power Button Failure

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

Chapter 4

133

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Acer EM250 manual Thermal Units Failure, Power Button Failure

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 Special keys and controls PowerCommunication Privacy control ICH7M System Block Diagram Icon Description Your eMachines Notebook tourFront View Left View Closed Front View Rear and Base View Right View HDD IndicatorsIcon Function Description 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 US dollar sign Euro symbolSpecial Keys Processor Specifications Hardware Specifications and ConfigurationsProcessor Specification Hard Disk Drive Interface Specification System Memory SpecificationSystem Storage Specification LTN101NT02-A01, LPL LP101WSA-TLA1 LED Specification Lvds Audio Codec and Amplifier SpecificationLAN Interface Specification Keyboard Specification Wireless LAN Specification Mini Card SpecificationCamera Specification 3G Card Specification Chapter Navigating the Bios Utility Bios Setup Utility Uuid InformationParameter Description Parameter Description Format/Option Main Clear or Set Enabled orSecurity Parameter Description Option 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 UnlockHD Remove HDD/BIOS Password UtilitiesRemoving HDD Password Password Cleaning Bios Passwords Removing Bios Passwords Miscellaneous Utilities Using Boot Sequence SelectorUsing DMITools 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 Main Screw List Quantity Part Number Pre-disassembly InstructionsDisassembly Process General Information Screw List Step Quantity External Module Disassembly ProcessExternal Modules Disassembly Flowchart 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 SW/B Power On IssueComputer Shuts down Intermittently 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 Internal Microphone Failure Microphone ProblemsSelect Set up microphone Select Startup Repair HDD Not Operating CorrectlySelect Repair your computer USB Failure Rightside Wireless Function Test Failure 3G Function Test Failure Switch Failure Thermal Units Failure Power Button Failure Other Failures External Mouse Failure Dimm Intermittent ProblemsUndetermined Problems Motherboard Cmos Discharge Code Description Post Code Reference TablesSec Memory BDS & Specific action Each Driver entry point used in 80PORT Each Peim entry point used in 80PORT Smbios CF9RESETBootpriority Fvbservice Fwblockservice LegacybiosLegacybiosplatform Setuputility Each SmmDriver entry point used in 80PORT Top View Bottom View LED1 Power boardSW1 LED2 3GWWAN LED JSATA1 Card reader boardJUSB2 JREAD1 Hardware Open Gap Description Clearing Password Check and Bios RecoveryClearing Password Check Steps for Clearing Bios Password Check Steps for Bios Recovery by USB Flash Crisis Disk Bios Recovery by Crisis DiskBios Recovery Boot Block Bios Recovery Hotkey FRU Field Replaceable Unit List Description Part Number EMachines eM250 Exploded DiagramsMain Assembly Rear Assembly Upper Cover Assembly Lower Cover Assembly LCD Assembly 04AC LF Power BoardEMachines eM250 FRU List AcerPN Acer Description IO Board Cable IO BoardBlue Tooth Cable DC-IN CABLE-30W AcerPN Acer Description 42.S6802.004 HDD DOOR-BLACK 158 Chapter 159 LCD Hinge Cover L-BLACK LCDANTENNA, CCD, Black LCD Hinge Cover R-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 Toshiba CPU Intel ATMN270BIntel ATMN280B HDD Seagate Nanya SO1GBII6 Samsung SO512MBIIHynix SO512MBII 178 UMA ICH7M 180 Appendix C Online Support Information 182 Index 184 ODD 129 186