Chapter | Acer 4235, 4535G guide

LS-4494P Fingerprint Board

LS-4495P USB Board

Clearing Password Check and BIOS Recovery

This section provide you the standard operating procedures of clearing password and BIOS recovery for Aspire 4935/4935G. Aspire 4935/4935G provides one Hardware Open Gap on main board for clearing password check, and one Hotkey for enabling BIOS Recovery.

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Chapter 5

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Acer 4235, 4535G manual Chapter

Contents

Aspire 4535/4535G/4235 Series Service Guide Revision History Copyright Following conventions are used in this manual Gives precautionary measures toProblems Procedures Preface Page Table of Contents 139 Top View Clearing Password Check and Bios RecoveryClearing Password Check Bios Recovery by Crisis Disk Chapter Features Privacy control Dimensions and WeightPower subsystem Communication Modem RJ-11 port DC-in jack for AC adapter Environment System Block Diagram Icon Description Indicates when the hard disk drive isYour Acer Notebook tour Front View Closed Front View Hdmi Left View Rear View Right View Icon Function Description Bottom ViewEasy-Launch Buttons Function Left Button Right Button Main touchpad Touchpad Basics with fingerprint reader Lock Keys and embedded numeric keypad Using the Keyboard Key Description Windows Keys US dollar sign Using the System UtilitiesEuro symbol Special Key Acer GridVista dual-display compatible System Board Major Chips Specifications Hardware Specifications and ConfigurationsProcessor Specification Processor Specifications Supported Protocols Bios ROM Memory Combinations Slot Total Memory System Memory Specifications Hard Disk Drive Interface Specifications Internal transfer Rate Mbits/sec Max Data transfer Rate Mbytes/sec Max DC Power Requirements VoltagePerformance Specifications Buffer size Interface LCD Specification Super-Multi Combo Module Specification Bluetooth Specification VGA Graphic Controller SpecificationKeyboard Specification Audio Interface Specification Battery Finger Print Reader Specification Navigating the Bios Utility Bios Setup Utility CPU Speed System Bios VersionSetup Information Parameter Description Format/Option 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 KEY Boot Cmos Exit Bios Flash Utilities DOS Flash Utility Execute the KBYF010.BAT batch file to update Bios Flash process begins as shown Plug in the AC power to continue Chapter WinFlash Utility Progress screen displays Chapter Remove HDD Password Remove HDD/BIOS Password UtilitiesThis section provide you with removing HDD/BIOS method Cleaning Bios Passwords Removing Bios Passwords Miscellaneous Utilities Using Boot Sequence SelectorUsing DMITools 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 Screw List Step Quantity External Module Disassembly ProcessExternal Modules Disassembly Flowchart Removing the Battery Pack Removing the SD Dummy Card Cover Removing the Lower Covers Remove the HDD Cover as shown Chapter Removing the Wlan Module Remove the Wlan Module as shown Chapter Step Size Quantity Screw Type Wlan Module M2*3 Removing the Dimm Modules Removing the Hard Disk Drive Module Lift the HDD carrier to remove 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 Lift the securing tape to expose the Antenna cable as shown Removing the LCD ModuleStep Size Quantity Screw Type LCD Module M2.5*5 Page Chapter Remove the two securing screws from the left LCD hinge Carefully remove the LCD Module from the chassis Remove the two securing screws from the right LCD hinge Upper Cover M2.5*5 Red callout M2.5*3 Green callout Chapter Removing the Upper Cover Chapter Page Step Size Quantity Screw Type Function Board M2*3 Removing the Function Board Lift the bracket clear of the casing Chapter Removing the Finger Print ReaderStep Size Quantity Screw Type Finger Print M2*3 Reader Chapter Removing the TouchPad Bracket Remove the TouchPad Bracket from the Upper Cover Remove the two screws from the TouchPad BracketStep Size Quantity Screw Type TouchPad M2*3 Bracket Removing the RTC Battery Removing the Bluetooth Module Bluetooth Module Remove the USB Board from the Lower Cover Removing the USB BoardStep Size Quantity Screw Type USB Board M2.5*3 Step Size Quantity Screw Type Modem Module M2*3 Removing the Modem Module Chapter Step Size Quantity Screw Type Mainboard M2.5*3 Removing the Mainboard Removing the RJ-11 Port Page Step Size Quantity Screw Type Thermal Module 5*3.2 Removing the Thermal ModulePage 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 Chapter 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 Removing the LCD Brackets and FPC Cable Removing the Antennas Removing the MIC Module Replacing the Antennas LCD Module Reassembly ProcedureReplacing the MIC Module Page Chapter Replacing the LCD Panel 100 Chapter Replacing the Camera Module Replacing the LCD Bezel Replacing the CPU Main Module Reassembly Procedure Replacing the Thermal Module Chapter 105 Connect fan cable to the mainboard as shown Replacing the RJ-11 Port Insert the cable through the casing to the top side as shown Replacing the Mainboard Insert the single securing screw Replacing the USB Board Replacing the Bluetooth Board Step Size Quantity Screw Type Replacing the Modem Module Secure the Modem cable in place with the adhesive tape Replacing the TouchPad Bracket 114 Chapter Replacing the Finger Print Reader 116 Chapter Chapter 117 Replacing the Function Board Replacing the Upper Cover Page Upper Cover M2.5*10 Red call out M2.5*5 Green callout Replace the two securing screws in the Upper Cover Chapter 121 Replacing the LCD Module Reconnect the Microphone cable to the Mainboard as shown Page 124 Chapter Replacing the Speaker Module Replace the two securing screws as shown Replacing the KeyboardPage Replacing the Switch Cover Step Size Quantity Screw Type Replacing the Hinge Covers Replacing the ODD Module External Module Reassembly Process Place the HDD carrier on the HDD Replacing the Hard Disk Drive ModuleReplace the securing screw Replace the four securing screws two each side Insert the Wlan board into the Wlan socket Replacing the Dimm ModulesReplacing the Wlan Module Replace the two screws to secure the module Replace the Lower Covers and secure the captive screws Replacing the Lower CoversReplacing the SD Dummy Card Replacing the Battery 138 Chapter Symptoms Verified Go To Common Problems AC/Batt Power On IssueAC/Battery Computer Shuts down Intermittently No Post or Video No Display Issue Abnormal Video Display Random Loss of Bios Settings LCD Failure Chapter 145 Built-In Keyboard Failure Touchpad Failure Chapter 147 Internal Speaker Failure Sound Problems Internal Microphone Failure Microphone ProblemsSelect Set up microphone Select Startup Repair HDD Not Operating CorrectlySelect Repair your computer ODD Not Operating Correctly ODD Failure Discs Do Not Play Drive Not Detected USB Failure Rightside Chapter 155 Wireless Function Failure Bluetooth Function Failure To M/B FFC Easy Button FailureFunction/B FFC to M/B Fingerprint Reader Failure Chapter 159 Thermal Unit Failure External Mouse Failure MB Cmos Discharge Other Failures Intermittent ProblemsUndetermined Problems Code Beeps Post Routine Description Post Codes Tables 164 Chapter Code Beeps Post Routine Description Code Beeps For Boot Block in Flash ROM Top View Bottom View LS-4921P Function Board 170 Chapter 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 FRU Field Replaceable Unit List Main Module Aspire 4535/4535G/4235 Exploded Diagrams HDD Door Memory Cover MiniPCI Door Lower Cover Chapter 175 Base Cable Aspire 4535/4535G/4235 FRU ListCategory Description Acer PN Board Category Description Acer PN Case/Cover/Bracket Assembly Keyboard Combo Drive Super Multidrive LK.14005.008 200NIT 8MS 42.PAA02.0076M.PBP02.003 LK.14005.006 220NIT 8MS LK.14008.001 LK.14005.006LK.14005.008 LK.14006.009 6M.PBP02.006 60.PAA02.007 Miscellaneous Speaker Category Description Acer PN Screw Screw List Chapter 185 Appendix a 186 Appendix aAspire 4535/4535G/4235 Series Appendix a Appendix a 188 Thailand LX.PBH0C.011 AS4535G-722G25Mn Appendix a 190 Thailand LX.PBG0C.003 AS4535G-862G50Mn Appendix a 192 China LX.PBF0C.005 AS4535-641G25Mn Appendix a 194 USA Appendix a 196 Acla Appendix a 198 LCD VGA Vram Appendix a 200 NLED14WXGAG UMA SO2GBII6 SO1GBII6 Appendix a 202 741G25Mn AS4535 Appendix a 204 ODD Appendix a 206 3rd WiFi 1x2 BGN 742G25Mn AS4535G Appendix a 208 3rd WiFi 1x2 BGN AS4535-822G32Mn Appendix a 210 Appendix B Test Compatible Components Brand Microsoft Windows Vista Environment Test Type Description Appendix B 213 Appendix B Camera Appendix B 215 Card Bus1 Appendix B 217 HDD Appendix B 219 Appendix B Appendix B 221 Appendix B Appendix B 223 Keyboard LAN Appendix B 225 226 Appendix B 227 228 Appendix B 229 230 Appendix B 231 232 Modem Appendix B 233 Toshiba NSM8XS Appendix B 235 Southbridge Chipset Type Description VGA Chip Appendix B 237 238 Appendix B 239 240 Appendix C Online Support Information 242 243 Index 244 ODD