Power On Issue | Acer 4935G SERIES instruction

Power On Issue

If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not replace a non-defective FRUs:

Computer Shutsdown Intermittently

If the system powers off at intervals, perform the following actions one at a time to correct the problem.

1.Check the power cable is properly connected to the computer and the electrical outlet.

2.Remove any extension cables between the computer and the outlet.

3.Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly into a known good electrical outlet.

4.Disconnect the power and open the casing to check the Thermal Unit and fan airways are free of obstructions.

5.Remove all external and non-essential hardware connected to the computer that are not necessary to boot the computer to the failure point.

6.Remove any recently installed software.

7.If the Issue is still not resolved, see “Online Support Information” on page 229.

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Chapter 4

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Acer 4935G SERIES manual Power On Issue, Computer Shutsdown Intermittently

Contents

Aspire 4935/4935G Series Service Guide Revision History Copyright III Conventions Preface Page Table of Contents Table of Contents Aspire 4935/4935G Series Microsoft Windows Vista Environment Test Table of Contents Features Chapter Dimensions and Weight Power subsystemCommunication Privacy control Environment System Block Diagram Intel Penryn Processor Your Acer Notebook tour Front ViewIcon Description Closed Front View Left View Hdmi Right View Rear View Bottom View Indicators Easy-Launch ButtonsHDD Icon 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 Hot Keys Hotkey Icon Function Description Euro symbol Special KeyUS dollar sign Using the System Utilities Acer GridVista dual-display compatiblePage Hardware Specifications and Configurations Processor SpecificationProcessor Specifications System Board Major Chips Specifications Specifications Bios ROM System Memory Specifications Memory Combinations Slot Total Memory0MB Hard Disk Drive Interface Specifications RPM Super-Multi Combo Module Specification 2MBSata DVD-RW DVD+RW CD-DA CD-ROM CD-ROM/XA Specification Super-Multi Combo Module Blueray Combo Drive Specification DMA LCD Specification LG LP140WH1Lvds VGA Graphic Controller Specification Keyboard SpecificationMedia Card Reader Specification Audio Interface Specification Finger Print Reader Specification BatterySony AS-2007A Bios Setup Utility Navigating the Bios Utility Information Parameter Description Enables or disables the Press F12 to display boot DisabledMain Parameter Description Format/Option Advanced Parameter Description Submenu Items IGD TV USBAspm Aspm L1 Parameter Description Submenu Items Disabled or SecurityParameter Description Option Clear or Set Setting a Password Removing a Password Changing a Password Power EmttmDTS Acpi S3 Boot USB HDD USB Cdrom Exit Exit Saving Changes Bios Flash Utilities DOS Flash Utility USB HDD WinFlash Utility Remove HDD/BIOS Password Utilities Remove HDD Password Key in biospw 14452 Removing Bios Passwords Cleaning Bios Passwords Using Boot Sequence Selector Using DMIToolsMiscellaneous Utilities Example 2 Write Product Name to Eeprom Chapter Machine Disassembly and Replacement Disassembly Requirements Pre-disassembly Instructions Disassembly ProcessGeneral Information Main Screw List Description Quantity Acer P/N External Module Disassembly Process External Modules Disassembly FlowchartScrew List Step Quantity Removing the Battery Pack Removing the SD dummy card Removing the ExpressCard dummy card Removing the Lower Covers Dimm Carefully open the HDD Cover Removing the Wlan Module Step Size Quantity Screw Type Wlan Module M2*3 Removing the Dimm Modules Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3*3 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 Step Screw Quantity Removing the Hinge Covers Step Size Quantity Screw Type Hinge Covers M2*3 Removing the Switch Cover Step Size Quantity Screw TypePage Removing the Keyboard Removing the Function Board Step Size Quantity Screw Type Function Board M2.5*3 Removing the Speaker Module Step Size Quantity Screw Type Speaker Module M2.5*3Page Removing the LCD Module Step Size Quantity Screw Type LCD Module M2.5*5Page Chapter Remove the two securing screws from the left LCD hinge Remove the two securing screws from the right LCD hinge Removing the Upper Base Unlock the connector and disconnect D as shown Page Removing the Finger Print Reader Page Removing the TouchPad Bracket Remove the TouchPad Bracket from the Upper Base Chapter Removing the eKey Board Step Size Quantity Screw Type Ekey Board M2.5*3 Removing the Media Board Chapter Removing the USB Board Step Size Quantity Screw Type USB Board M2.5*3 Lift the USB Board clear of the casing Removing the Modem Module Step Size Quantity Screw Type Modem Module M2*3 Removing the Bluetooth Module Removing the Mainboard Step Size Quantity Screw Type Mainboard M2.5*3 Lift the mainboard right side first to remove from the base Removing the RJ-11 Port Chapter Removing the Thermal Module Chapter 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 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 Chapter 105 Removing the LCD Brackets and FPC Cable Removing the Antennas Removing the MIC Module LCD Module Reassembly Procedure Replacing the MIC Module Replacing the Antennas Page 112 Chapter Replacing the LCD Panel 114 Chapter Replacing the Camera Module Replacing the LCD Bezel Main Module Reassembly Procedure Replacing the CPU Replacing the Thermal Module Replacing the RJ-11 Port Insert the cable through the casing to the top side as shown Replacing the Mainboard Replacing the Bluetooth Board Replacing the Modem Module Replacing the USB Board Replacing the Media Board Replacing the eKey Board Replacing the TouchPad BracketPlace the TouchPad in the casing Replacing the Finger Print Reader Replacing the Upper Cover 128 Chapter Page Replacing the LCD Module Chapter 131 Replace the adhesive strip to secure the cables in place Replace the two securing screws Chapter 133 Replacing the Speaker Module Replacing the Function Board Replacing the Keyboard Replacing the Switch Cover 138 Chapter Replacing the Hinge Covers Replacing the ODD Module Replacing the Hard Disk Drive Module Replacing the Dimm ModulesPlace the HDD carrier on the HDD Replacing the Wlan Module Replacing the Lower Covers Replacing the Battery Replacing the ExpressCard and SD Card Dummy Trays 144 Chapter Common Problems Symptoms Verified Go To Power On Issue Computer Shutsdown Intermittently No Display Issue No Post or Video Random Loss of Bios Settings Abnormal Video Display LCD Failure Built-In Keyboard Failure Touchpad Failure Internal Speaker Failure Sound Problems Microphone Problems Select Set up microphoneInternal Microphone Failure HDD Not Operating Correctly Select Repair your computerSelect Startup Repair ODD Failure ODD Not Operating Correctly Discs Do Not Play Drive Not Detected USB Failure Rightside Modem Function Failure Wireless Function Failure Bluetooth Function Failure EasyTouch Button Failure Media Board Failure Fingerprint Reader Failure Thermal Unit Failure External Mouse Failure Other Failures Intermittent Problems Undetermined Problems Post Codes 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 Pin Description Bottom View 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 Crisis Disk FRU Field Replaceable Unit List Aspire 4935/4935G Exploded Diagrams Main Module Aspire 4935/4935G FRU List Category Description Acer P/N AdapterBoard Case/Cover/Bracket Assembly Category Description Acer P/NCable CPU/Processor Combo Drive Super Multi Drive Blueray Combo Keyboard Keyboard ND Scandinavian Keyboard AR/FR ARABIC/FRENCHKeyboard CB Canadian Bilingual Keyboard SV Slovak Memory HeatsinkSpeaker Miscellaneous Screw List Category Description Acer P/N ScrewScrew M 2.5D Screw M M 3.0D Chapter 183 Appendix a Aspire 4935/4935G SeriesModel Country Acer Part No Description VHP32ATMY1 MC Umace LINPUSAVN1 Umace 1*2GVHP32ATSG1 MC Umacef Emea VHP32ATZA2 MC UmaceVHP32ATZA1 MC Umace VHP32ATDK1 MC Umace VHP32ATEU3 MC Umace VHP32ATEU5 MC UmaceVHP32ATEU7 MC Umace VHP32ATHU1 MC Umace VHP32ATME9 MC Umace VHP32ATME2 MC UmaceVHP32ATME3 MC Umace VHP32ATME4 MC Umace LINPUSATH1 Umacef 1*2G VHP32ATPH1 MC Umace VHP32ATVN1 MC Umacef ChinaVHB32ATCN1 MC Umacef LINPUSACN1 Umacef 1*1G LINPUSAVN1 Umacef 1*2GVHP32ATCA2 MC Umacef VHP32ATUS1 MC Umacef VHP32ATEA3 MC Umacef LINPUSAVN1 Umace 2G+1GVHP32ATMY1 MC Umacef VHP32AWW1 MC Umacef LINPUSATH1 VHP32ATTH1 MCVHP32ATRU1 MC VHP32ATUK1 MC VHP32ATNL1 MC VHP32ATLU1 MCVHP32ATSE1 MC VHP32ATEU4 MC VHP32ATGR1 MC VHP32ATIL1 MCVHP32ATIT1 MC VHP32ATME9 MC VHP32ATGB1 MC LINPUSACN1VHB32ATCN1 MC VHP32ATSG1 MC VHP32ATPH1 MC Middle East LX.AC90X.040 AS4935G-733G32Mn EM Ukraine LX.AC90X.025 AS4935G-733G32Mn VHB32ATMY1 MC VHP32AWW1 MCVHP32ATMY1 MC VHP32ATID1 MC VHP32ATXC2 MC VHP32ATEA1 MCVHP32ATEA3 MC Singapore LX.AD80X.013 AS4935G-864G32Mn C2DP8600 Model VGA ChipNLED14WXGAG UMA SO1GBII6 NLED14WXGAG UMA SO2GBII6 583G25Mn AS4935 583G32Mn AS4935 593G32Mn AS4935 NLED14WXGAG 9MGSHM 644G32Mn Appendix a 208 SO2GBII6 SO1GBII6 733G32Mn Appendix a 210 841G16Mn AS4935G Card Reader Finger PrintNSM8XS 1-Build SP1x2MMW 583G16Mn AS4935 1-Build SP1x2MMW AES1610 583G32Mn AS4935 1-Build SP1x2MMW AES1610 591G25Mn AS4935 1-Build SP1x2MMW AES1610 731G25Mn AS4935 1-Build SP1x2MMW AES1610 582G32Mn AS4935G 1-Build SP1x2MMW AES1610 731G16Mn AS4935G 1-Build SP1x2MMW 733G32Mn AS4935G 1-Build SP3x3MMW AES1610 733G32Mn AS4935G NBDCB2XS Appendix a 222 Test Compatible Components Appendix B Bluetooth Microsoft Windows Vista Environment TestVendor Type Description Adapter Audio Codec Vendor Type Description Finger Print Reader Seagate Sata LF F/W0001SDM1 DarfonNLED14WXGAG AUO Remote Control Vendor Type Description ModemNorhtbridge Southbridge Intel FCC/IC ONE Time BGN Vender Online Support Information Appendix C 230 Index 232