Built-In Keyboard Failure | Acer 4535G, 4235 guide

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 non-defective FRUs:

START
Keyboard FPC well connected?	No	Connect
	No	it well
		it well

	Keyboard OK?	No	Replace
			keyboard

Replace M/B

Chapter 4

145

Image 154

Acer 4535G, 4235 manual Built-In Keyboard Failure

Contents

Aspire 4535/4535G/4235 Series Service Guide Revision History Copyright Procedures Gives precautionary measures toProblems Following conventions are used in this manual Preface Page Table of Contents 139 Bios Recovery by Crisis Disk Clearing Password Check and Bios RecoveryClearing Password Check Top View Features Chapter Communication Dimensions and WeightPower subsystem Privacy control Environment Modem RJ-11 port DC-in jack for AC adapter System Block Diagram Front View Indicates when the hard disk drive isYour Acer Notebook tour Icon Description Closed Front View Left View Hdmi Right View Rear View Easy-Launch Buttons Bottom ViewIcon Function Description Touchpad Basics with fingerprint reader Function Left Button Right Button Main touchpad Using the Keyboard Lock Keys and embedded numeric keypad Windows Keys Key Description Special Key Using the System UtilitiesEuro symbol US dollar sign Acer GridVista dual-display compatible Processor Specifications Hardware Specifications and ConfigurationsProcessor Specification System Board Major Chips Specifications Bios ROM Supported Protocols System Memory Specifications Memory Combinations Slot Total Memory Hard Disk Drive Interface Specifications Performance Specifications Buffer size Interface Rate Mbytes/sec Max DC Power Requirements VoltageInternal transfer Rate Mbits/sec Max Data transfer Super-Multi Combo Module Specification LCD Specification Audio Interface Specification VGA Graphic Controller SpecificationKeyboard Specification Bluetooth Specification Finger Print Reader Specification Battery Bios Setup Utility Navigating the Bios Utility Information System Bios VersionSetup CPU Speed Main Enables or disables the Press F12 to display bootDisabled Parameter Description Format/Option Parameter Description Option Disabled orSecurity Clear or Set Setting a Password Removing a Password Changing a Password Enter New Password Boot USB KEY Exit Cmos Bios Flash Utilities Execute the KBYF010.BAT batch file to update Bios DOS Flash Utility Plug in the AC power to continue Chapter Flash process begins as shown WinFlash Utility Progress screen displays Chapter This section provide you with removing HDD/BIOS method Remove HDD/BIOS Password UtilitiesRemove HDD Password Removing Bios Passwords Cleaning 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 Machine Disassembly and Replacement Disassembly Requirements General Information Pre-disassembly InstructionsDisassembly Process Main Screw List Description Quantity Acer P/N External Modules Disassembly Flowchart External Module Disassembly ProcessScrew List Step Quantity Removing the Battery Pack Removing the SD Dummy Card Removing the Lower Covers Cover Remove the HDD Cover as shown Chapter Removing the Wlan Module Step Size Quantity Screw Type Wlan Module M2*3 Remove the Wlan Module as shown Chapter Removing the Dimm Modules Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3*3 Lift the HDD carrier to remove Removing the Optical Disk Drive Module Step Size Quantity Screw Type ODD Module M2.5*5 Step Size Quantity Screw Type ODD Bracket M2*3 Main Unit Disassembly Process Main Unit Disassembly Flowchart Removing the Hinge Covers Step Size Quantity Screw Type Hinge Covers M2*3 Removing the Switch Cover Step Size Quantity Screw Type Chapter Removing the Keyboard Removing the Speaker Module Step Size Quantity Screw Type Speaker Module M2.5*3Page Step Size Quantity Screw Type LCD Module M2.5*5 Removing the LCD ModuleLift the securing tape to expose the Antenna cable as shown Page Chapter Remove the two securing screws from the left LCD hinge Remove the two securing screws from the right LCD hinge Carefully remove the LCD Module from the chassis Removing the Upper Cover Upper Cover M2.5*5 Red callout M2.5*3 Green callout Chapter Chapter Page Removing the Function Board Step Size Quantity Screw Type Function Board M2*3 Step Size Quantity Screw Type Finger Print M2*3 Reader Removing the Finger Print ReaderLift the bracket clear of the casing Chapter Chapter Removing the TouchPad Bracket Step Size Quantity Screw Type TouchPad M2*3 Bracket Remove the two screws from the TouchPad BracketRemove the TouchPad Bracket from the Upper Cover Removing the RTC Battery Removing the Bluetooth Module Bluetooth Module Step Size Quantity Screw Type USB Board M2.5*3 Removing the USB BoardRemove the USB Board from the Lower Cover Removing the Modem Module Step Size Quantity Screw Type Modem Module M2*3 Chapter Removing the Mainboard Step Size Quantity Screw Type Mainboard M2.5*3 Removing the RJ-11 Port Page Removing the Thermal Module Step Size Quantity Screw Type Thermal Module 5*3.2Page Removing the CPU LCD Module Disassembly Process LCD Module Disassembly Flowchart Removing the LCD Bezel Step Size Quantity Screw Type LCD Bezel M2.5*5 Lift the bezel away from the panel Chapter Removing the Camera Module Step Size Quantity Screw Type Camera Module M2.5*3 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 MIC Module LCD Module Reassembly ProcedureReplacing the Antennas Page Chapter Replacing the LCD Panel 100 Chapter Replacing the Camera Module Replacing the LCD Bezel Main Module Reassembly Procedure Replacing the CPU Replacing the Thermal Module Connect fan cable to the mainboard as shown Chapter 105 Replacing the RJ-11 Port Replacing the Mainboard Insert the cable through the casing to the top side as shown Insert the single securing screw Replacing the USB Board Replacing the Bluetooth Board Step Size Quantity Screw Type Replacing the Modem Module Replacing the TouchPad Bracket Secure the Modem cable in place with the adhesive tape 114 Chapter Replacing the Finger Print Reader 116 Chapter Replacing the Function Board Chapter 117 Replacing the Upper Cover Page Replace the two securing screws in the Upper Cover Upper Cover M2.5*10 Red call out M2.5*5 Green callout Replacing the LCD Module Chapter 121 Reconnect the Microphone cable to the Mainboard as shown Page 124 Chapter Replacing the Speaker Module Replacing the Keyboard Replace the two securing screws as shownPage Replacing the Switch Cover Step Size Quantity Screw Type Replacing the Hinge Covers External Module Reassembly Process Replacing the ODD Module Replace the securing screw Replacing the Hard Disk Drive ModulePlace the HDD carrier on the HDD Replace the four securing screws two each side Replacing the Wlan Module Replacing the Dimm ModulesInsert the Wlan board into the Wlan socket Replace the two screws to secure the module Replacing the SD Dummy Card Replacing the Lower CoversReplace the Lower Covers and secure the captive screws Replacing the Battery 138 Chapter Common Problems Symptoms Verified Go To Computer Shuts down Intermittently Power On IssueAC/Battery AC/Batt No Display Issue No Post or Video Abnormal Video Display Random Loss of Bios Settings LCD Failure Built-In Keyboard Failure Chapter 145 Touchpad Failure Internal Speaker Failure Chapter 147 Sound Problems Select Set up microphone Microphone ProblemsInternal Microphone Failure Select Repair your computer HDD Not Operating CorrectlySelect Startup Repair ODD Failure ODD Not Operating Correctly Discs Do Not Play Drive Not Detected USB Failure Rightside Wireless Function Failure Chapter 155 Bluetooth Function Failure FFC to M/B Easy Button FailureFunction/B To M/B FFC Fingerprint Reader Failure Thermal Unit Failure Chapter 159 External Mouse Failure MB Cmos Discharge Undetermined Problems Intermittent ProblemsOther Failures Post Codes Tables Code Beeps Post Routine Description 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 Hardware Open Gap Description Clearing Password CheckSteps for Clearing Bios Password Check Description Location Clear Cmos Jumper Memory bay Bios Recovery Hotkey Bios Recovery by Crisis DiskBios Recovery Boot Block Steps for Bios Recovery by Crisis Disk FRU Field Replaceable Unit List Aspire 4535/4535G/4235 Exploded Diagrams Main Module Base HDD Door Memory Cover MiniPCI Door Lower Cover Chapter 175 Category Description Acer PN Board Aspire 4535/4535G/4235 FRU ListCable Case/Cover/Bracket Assembly Category Description Acer PN Keyboard Super Multidrive Combo Drive LK.14005.006 220NIT 8MS 42.PAA02.0076M.PBP02.003 LK.14005.008 200NIT 8MS LK.14006.009 LK.14005.006LK.14005.008 LK.14008.001 60.PAA02.007 6M.PBP02.006 Speaker Miscellaneous Screw List Category Description Acer PN Screw Chapter 185 Aspire 4535/4535G/4235 Series Appendix aAppendix a 186 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 Test Compatible Components Appendix B Microsoft Windows Vista Environment Test Brand Appendix B 213 Type Description Appendix B Appendix B 215 Camera Card Bus1 Appendix B 217 HDD Appendix B 219 Appendix B Appendix B 221 Appendix B Appendix B 223 Keyboard Appendix B 225 LAN 226 Appendix B 227 228 Appendix B 229 230 Appendix B 231 232 Appendix B 233 Modem Toshiba NSM8XS Appendix B 235 Southbridge Chipset Appendix B 237 Type Description VGA Chip 238 Appendix B 239 240 Online Support Information Appendix C 242 Index 243 ODD 244