Acer M3920 manual Power System Check, System External Inspection, System Internal Inspection

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System Check Procedures

Power System Check

If the system will power on, skip this section. Refer to System External Inspection.

If the system will not power on, do the following:

Check if the power cable is properly connected to the system and AC source.

Check if the voltage selector switchis set to the correct voltage setting.

System External Inspection

1.Inspect the LED indicators on the front panel, which can indicate the malfunction.

2.Make sure that air flow is not blocked.

3.Make sure nothing in the system is making contact that could short out power.

4.If the problem is not evident, continue with System Internal Inspection.

System Internal Inspection

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.

6.Remove the system covers.For instructions on removing system covers, refer to “System Disassembly”.

7.Verify that components are properly seated.

8.Verify that all cable connectors inside the system are firmly and correctly attached to their appropriate connectors.

9.Verify that all components are Acer-qualified and supported.

10.Replace the system covers.

11.Power on the system.

12.If the problem with the system is not evident, you can try viewing the POST messages and BIOS event logs during the system startup.

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Chapter 4

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Contents Acer Aspire M3920 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents Table of Contents Features and Specifications Component DescriptionAudio Device Standby Mode Global Standby ModeSuspend Mode Aspect DescriptionFront View ComponentRear View Chapter System Utilities Entering Cmos setup Navigating Through the Setup UtilitySetup Utility Menus Main Main menu displays basic information about the systemAdvanced Miscellaneous Advanced Chipset Configuration DvmtIntegrated Peripherals AhciPC Health Status Power Setting a system password SecurityBoot Options LANExit Save ChangesChapter 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 TV Card Removing the Memory ModulesRemoving 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 Power System Check System External InspectionSystem Internal Inspection Beep Codes Viewing Bios checkpoints Bootblock Initialization Code CheckpointsCheckpoints System is waking from Acpi S3 state Bootblock Recovery Code Checkpoints Checkpoint DescriptionBios Recovery Chapter System Architecture Mainboard Layout Label DescriptionJumper Setting Jumper Type Description Setting default PictureInternal header pin definition Header Name Function DefinitionConnector pin definition Connector Name Function DefinitionSata Conn Connecting Optional Devices Pin Signal NamePin Signal Name Function USBF1~4 Front Panel USB headersConnecting Case Components CPUFAN1 CPU Cooling Fan Power ConnectorPWR2 ATX 24-pin Power Connector PWR1 ATX 12V Power ConnectorFront Panel Header FRU Field Replaceable Unit List Aspire M3920 Exploded Diagram Accessory BoardCard LSI Universal Modem PCI-E CableAssembly CASE/COVER/BRACKETCombo Module CPU/PROCESSORDVD-RW Drive FANHDD/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 Pointing Device MainboardMemory Power Supply Speaker