Power On Issue, Computer Shutsdown Intermittently | Acer 4730

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 (see “Thermal Unit Failure” on page 138) and fan airways are free of obstructions.

5.Disable the power management settings in the BIOS to ensure they are not the cause of the problem (see “Power” on page 33).

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

7.Remove any recently installed software.

8.If the Issue is still not resolved, see “Online Support Information” on page 179.

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Chapter 4

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Acer 4730 manual Power On Issue, Computer Shutsdown Intermittently

Contents

TravelMate 4730/4730G Series Service Guide Revision History Copyright III Conventions Preface Page Table of Contents Table of Contents TravelMate 4730/4730G Series Microsoft Windows Vista Environment Test Table of Contents Features Chapter Communication Dimensions and WeightPower subsystem Privacy control Environment System Block Diagram Icon Description Your Acer Notebook tourFront View Closed Front View Left View Hdmi Right View Rear View Bottom View Icon Function Description IndicatorsEasy-Launch Buttons Wlan 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 US dollar sign Euro symbolSpecial Key Using the System Utilities Acer GridVista dual-display compatiblePage Cache Specification Hardware Specifications and ConfigurationsProcessor Specification 2MB 0MB System Memory SpecificationMemory Combinations Slot Total Memory Wireless Module 802.11b/g Specification LAN Interface SpecificationBluetooth Interface Specification WiFi/WiMAX Combo Module Specification Video Memory Specification Combo Drive Module SpecificationAudio Interface Specification USB Interface Specification LCD Specification Keyboard SpecificationBattery Specification ENE KB926 AC Adapter Specification LCD Camera SpecificationLCD Inverter Specification System Power Management Specification Chapter Bios Setup Utility Navigating the Bios Utility Information Parameter Description Main Parameter Description Format/Option IDE AdvancedParameter Description Submenu Items Aspm Nfer URRFER CER Parameter Description Option Enabled orSecurity Clear or Set Setting a Password Removing a Password Changing a Password DTS PowerEmttm Acpi S3 Boot USB HDD Exit Exit Saving Changes Bios Flash Utility Chapter Remove HDD/BIOS Utility Remove HDD Password Key in biospw 14452 Remove Bios Password Chapter Chapter Machine Disassembly and Replacement Disassembly Requirements General Information Pre-disassembly InstructionsDisassembly Process Main Screw List Quantity Part Number Screw List Step Quantity Color External Module Disassembly ProcessExternal Modules Disassembly Flowchart Removing the Battery Pack Removing the SD dummy card Removing the NewCard dummy card Removing the Lower Covers Remove the Wlan cover as shown Removing the Dimm Modules Removing the Wlan Module Step Size Quantity Screw Type Wlan Module M2*3 NL Detach the Wlan board from the Wlan socket Chapter Removing the Hard Disk Drive Module Step Size Quantity Screw Type HDD Carrier M3*3.5 NL Removing the Optical Drive Module Step Size Quantity Screw Type ODD Module M2.5*5NL Step Size Quantity Screw Type ODD Bracket M2*3 NL Main Unit Disassembly Process Removing the Switch Cover Step Size Quantity Screw Type Switch Cover M2.5*3 Removing the Keyboard Step Size Quantity Screw Type Keyboard M2*3 Removing the Power Board Step Size Quantity Screw Type Power Board M2*3 Removing the Launch Board Removing the Antenna Step Size Quantity Screw Type Launch Board M2*3Page Removing the LCD Module Step Size Quantity Screw Type LCD Module M2.5*8NL Step Size Quantity Screw Type Removing the Upper Cover Step Size Quantity Screw Type Upper Cover M2.5x9 Chapter Step Size Quantity Screw Type Upper Cover M2.5*9 NL Chapter Removing the Finger Print Reader M2.5*3 NL Chapter Removing the Touch Pad Bracket Removing the Left Speaker Module Step Size Quantity Screw Type Removing the Right Speaker Module Removing the Bluetooth Module Removing the Modem Module Step Size Quantity Screw Type Modem Module M2*3 NL Removing the Mainboard Red Call out Page Removing the USB Board Removing the RJ-11 Port Removing the Thermal Module Lift the Thermal Module clear of the Mainboard Chapter Removing the CPU Removing the VGA Module Step Size Quantity Screw Type VGA Module M2*4-NI NL LCD Module Disassembly Process Removing the LCD Bezel Step Size Quantity Screw Type LCD Bezel M2.5*5 NL Removing the Inverter Board Step Size Quantity Screw Type Inverter Board M2.5*6 NL Removing the Camera Module Step Size Quantity Screw Type Camera Board M2*2.3 Removing the LCD Panel Removing the LCD Brackets and FPC Cable Step Size Quantity Screw Type LCD Brackets M2*3 NL Removing the Antennas Removing the MIC Module LCD Module Reassembly Procedure Replacing the LCD Panel Chapter Page 100 Chapter Replacing the LCD Bezel Replacing the CPU Main Module Reassembly ProcedureReplacing the VGA Module Replacing the Thermal Module Replacing the RJ-11 Port Connect the RJ-11 cable to the modem module as shown Replacing the Mainboard Replacing the Modem Module Replacing the USB Board Replacing the Bluetooth Board Replacing the Right Speaker Module Replace the two securing screws Replacing the Launch Board Replacing the Finger Print Reader Replacing the Touch Pad Bracket Replacing the Left Speaker Module Replacing the Upper Cover Connect the seven cables on the mainboard as shown Replacing the LCD Module 114 Chapter Replacing the Antenna Cables 116 Chapter Replacing the Switch Cover Replacing the Keyboard Turn the computer over and replace the five securing screws Replacing the Wlan Module Replacing the Hard Disk Drive Module Replacing the Dimm Modules Replacing the ODD Module Replacing the Lower Covers Replacing the NewCard and SD Card Trays 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 Internal Microphone Failure Microphone ProblemsSelect Set up microphone Select Startup Repair HDD Not Operating CorrectlySelect Repair your computer ODD Failure ODD Not Operating Correctly Discs Do Not Play Drive Not Detected USB Failure Rightside Modem Function Failure Wireless/WiMAX Function Failure Bluetooth Function Failure Robson Module Failure EasyTouch Button Failure Fingerprint Reader Failure Thermal Unit Failure Hdmi Switch Failure External Mouse Failure Other Failures Dimm Intermittent ProblemsUndetermined Problems Driver Name Port Code Post Codes TablesPort 80 Post Codes SNP Driver Name Port80 Code Before press function key Post Keys and MessagesKey Function Cpuid Top View Location Description Bottom View Steps for Clearing Bios Password Check Clearing Password Check and Bios RecoveryClearing Password Check Hardware Open Gap Description Bios Recovery Hotkey Bios Recovery by Crisis DiskBios Recovery Boot Block Steps for Bios Recovery by Crisis Disk FRU Field Replaceable Unit List TBD TravelMate 4730/4730G Exploded DiagramsMain Module CPU TBD LCD Module TravelMate 4730/4730G FRU List Half Mini Card 533ANHMWG-INTEL VGA BOARD-NB9MGS256MBHdmi BOARD-UMA Half Mini Card 512ANHMWG-INTEL Power Cord AUS 3 PIN Power Cord US 3 PINPower Cord EU 3 PIN Power Cord UK 3 PIN Mini Door RAM DoorHDD Door for Dasp Pcmcia Dummy Card ODD BEZEL-COMBO DVD/CDRW Combo Drive Toshiba TS-L463ADVD/CDRW Combo Drive Sony CRX890S ODD Bracket HDD Sata 120G 5400RPM WD WD1200BEVS-22USTO HDD Sata 120G 5400RPM Toshiba MK1246GSXHDD Sata 120G 5400RPM Seagate ST9120817AS HDD Sata 160G 5400RPM Toshiba MK1646GSX Keyboard Belgian Black TM Keyboard Inteui Black TMKeyboard Arabic Black TM Keyboard Brazilian Black TM LCD BRACKET-R LCD Cover ASSY-PLASTICLCD Bezel for CCD LCD BRACKET-L LCD Panel G 14.1 Wxga SAM LTN141W3-L01-J L6 LF LCD Cover ASSY-MGLCD Panel G 14.1 Wxga AUO B141EW04-V4 LF Inverter MB ASSY-UMA TBD MB ASSY-DIS CPU Support Bridge CE6 RAM 512MB Ddrii 667 Hynix HYMP164S64CP6-Y5 RAM 512MB Ddrii 667 Nanya NT512T64UH8B0FN-3CRAM 512MB Ddrii 667 Samsung M470T6464QZ3 RAM 1GB Ddrii 667 Nanya NT1GT64U8HB0BN-3C Screw DIS-THE-SCREW Screw ListScrew Chapter 165 Appendix a TravelMate 4730/4730G Series Appendix a Appendix a 168 Appendix a Appendix a 170 NSM8XS TCS4E Appendix a 172 942G25Mn Appendix a 174 Test Compatible Components Appendix B Microsoft Windows Vista Environment Test Memory Test Vendor Type Description LAN TestLCD Test Modem Test 178 Online Support Information Appendix C 180 Index 182 Wireless Function Failure 136 Wlan Board 184