Acer M3900 manual Removing the Power Supply

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Removing the Power Supply

1.Disconnect the 24-pin and 4-pin power supply cables from the mainboard.

2.Remove the four screw that secures the power supply to the chassis.

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Chapter 3

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Contents Acer Aspire M3900 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents FRU Field Replaceable Unit List Features ChapterOn-Board Graphic solution AudioHard disk Optical diskTotal I/O ports USB portsExtension slot System Bios Power supplyBlock Diagram System Components Front PanelRear Panel Main Board Major Chips Hardware Specifications and ConfigurationsIOS Hotkey List Audio Interface Memory CombinationsSystem Memory Power Management Sata InterfaceUSB Port Environmental RequirementsPower Management FunctionACPI support function Device Standby ModeGlobal Standby Mode Suspend ModeCmos Setup Utility System UtilitiesEntering Cmos setup Navigating Through the Setup UtilitySetup Utility Menus Parameter DescriptionProduct Information Standard Cmos Features Parameter Description OptionAdvanced Bios Feature EnabledAdvanced Chipset Features Integrated Peripherals Power Management Setup PC Health Status Frequency/Voltage Control Bios Security Features Setting a supervisor passwordLoad Default Settings Save & Exit Setup Exit Without Saving System Disassembly Disassembly RequirementsPre-disassembly Procedure Removing the Side Panel Removing the Heat Sink Fan Assembly Page Removing the Processor Removing the VGA Card Removing the TV Card Removing the Mode Card Removing the Memory Modules Removing the Hard Disk Drive Chapter Removing the USB Board of Rear Panel Chapter Removing the Front Bezel Pull the bezel away from the chassis Removing the Optical Drive Chapter Removing the Removable HDD Chapter Page Removing the Power Supply Lift the power supply module out of the chassis Chapter Removing the Card Reader Pull the card reader out of chassis Chapter Removing the Mainboard Page System Troubleshooting System Internal Inspection Power System CheckSystem External Inspection Beep Codes Checkpoints Viewing Bios checkpointsBootblock Initialization Code Checkpoints System is waking from Acpi S3 state Bootblock Recovery Code Checkpoints Checkpoint DescriptionBios Recovery Jumper and Connector Information PlacementLabel Description Internal header pin definition Jumper SettingSetting Jumper Front USB Header USBVCC1 Connector pin definition Connector Name Function DefinitionSATA1TXP SATA1TXN ATX12V Conn FRU Field Replaceable Unit List Aspire M3900 Exploded DiagramAM350-ASSY Aspire M3900 Exploded DiagramAM351-ASSY Aspire M3900 FRU List Components Model Name or Key Spec Acer P/NCPU VGA NV GT330 2GB DDR2 DVI+HDMI+VGA ATX Samsung Geforce 310 512MB DDR2 Samsung 64BITS VGA DVI Hdmi Components Model Name or Key Spec Acer P/N