Acer M3920 manual System Disassembly

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Chapter 3

System Disassembly

This chapter contains step-by-step procedures on how to disassemble the desktop computer for maintenance and troubleshooting.

Disassembly Requirements

To disassemble the computer, you need the following tools:

Wrist grounding strap and conductive mat for preventing electrostatic discharge

Flat-blade screwdriver

Philips screwdriver

Hex screwdriver

Plastic flat-blade screwdriver

Plastic tweezers

NOTE: The screws for the different components vary in size. During the disassembly process, group the screws with the corresponding components to avoid mismatch when putting back the components.

Pre-disassembly Procedure

Before proceeding with the disassembly procedure, perform the steps listed below:

1.Turn off the system and all the peripherals connected to it.

2.Unplug the power cord from the power outlets.

3.Unplug the power cord from the system.

4.Unplug all peripheral cables from the system.

5.Place the system unit on a flat, stable surface.

Chapter 3

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Contents Acer Aspire M3920 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents Table of Contents Component Description Features and SpecificationsAudio Global Standby Mode Device Standby ModeSuspend Mode Aspect DescriptionComponent Front ViewRear View Chapter System Utilities Navigating Through the Setup Utility Entering Cmos setupSetup Utility Menus Main menu displays basic information about the system MainAdvanced Miscellaneous Dvmt Advanced Chipset ConfigurationAhci Integrated PeripheralsPC Health Status Power Security Setting a system passwordLAN Boot OptionsSave Changes ExitChapter System Disassembly Removing the Side Panel Removing the Heatsink Fan Assembly Removing the Processor Page Removing the VGA Card Removing the Mode Card Removing the Memory Modules Removing the TV CardRemoving the Hard Disk Drive Chapter Page Removing the USB Board Page Chapter Removing the Front Bezel Chapter Removing the Optical Drive Chapter Removing the Removable HDD Chapter Page Chapter Removing the Card Reader Chapter Page Removing the Power Supply Page Removing the Mainboard Page Press the I/O shield to remove it Remove the RTC battery 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 Checkpoint Description Bootblock Recovery Code CheckpointsBios Recovery Chapter System Architecture Label Description Mainboard LayoutJumper Type Description Setting default Picture Jumper SettingHeader Name Function Definition Internal header pin definitionConnector Name Function Definition Connector pin definitionSata Conn Pin Signal Name Connecting Optional DevicesUSBF1~4 Front Panel USB headers Pin Signal Name FunctionCPUFAN1 CPU Cooling Fan Power Connector Connecting Case ComponentsFront Panel Header PWR2 ATX 24-pin Power ConnectorPWR1 ATX 12V Power Connector FRU Field Replaceable Unit List Aspire M3920 Exploded Diagram Board AccessoryCable Card LSI Universal Modem PCI-ECASE/COVER/BRACKET AssemblyCPU/PROCESSOR Combo ModuleFAN DVD-RW DriveHDD/HARD Disk Drive HeatsinkKeyboard Keyboard KIT 105KEY RF2.4 LITE-ON KB&MS Pack RF Keyboard KIT 106KEY RF2.4 LITE-ON KB&MS Pack RF Keyboard KIT 105KEY RF2.4 Primax KB&MS Pack RF Keyboard KIT 104KEY RF2.4 Primax KB&MS Pack RF Keyboard 105KEY USB LITE-ON SK KB SK-9621B USB KB36211 Black Portuguese USB 105KS Black Keyboard 105KEY USB Primax KB Primax KB36211 Black US 104K Black US Keyboard 104KEY PS/2 LITE-ON SK Black Thailand 104K Black Keyboard 105KEY PS/2 LITE-ON SK Black Slovenian 105K Black Keyboard 105KEY PS/2 LITE-ON SK KB36111 Black US PS2 104KS Black Keyboard 104KEY PS/2 Primax KB36111 Black Belgium 105K Black Keyboard 105KEY PS/2 Primax Memory Pointing DeviceMainboard Speaker Power Supply