Aspire Digital H342, H341 manual Clearing Cmos

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Clearing CMOS

To clear the BIOS configuration you need to short the JP3 Clear CMOS jumper on the mainboard.

1.Turn off the computer and all attached devices.

2.Remove the system cover. See “Removing the System Cover” on page 25.

3.Locate the JP3 Clear CMOS jumper on the mainboard.

4.Remove the jumper from the default position.

5.Replace the jumper to connect the 2nd and 3rd pins.

6.Access the BIOS Setup Utility by connecting a debug card, keyboard, and a monitor to the system. Perform steps 3 and 7 through 10 of the “Entering the BIOS Setup Utility” on page 10.

7.Press <F9> to load the system default values.

8.Press <F10> to save the changes made and close the Setup Utility.

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Chapter 4

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Contents Aspire EasyStore H341/H342 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents FRU Field Replaceable Unit List Features ChapterSystem Tour Front PanelIcon Component Rear Panel Internal Components System LED Indicators LED indicator Color LED status DescriptionLED indicator Color LED status Description Rear panel Chapter AMI Bios Setup Utility System UtilitiesEntering the Bios Setup Utility Navigating Through the Setup Utility Setup Utility Menus Main Advanced Boot Chipset Exit Chapter System Disassembly Disassembly RequirementsPre-disassembly Procedure Main Unit Disassembly Main Unit DisassemblyRemoving the Hard Disk Page Chapter Removing the System Cover Removing the Front Bezel Pull the bezel away from the chassis Chapter Removing the Front I/O Board Remove the four screws C that secure the front I/O board Removing the Backplane Board Chapter Lift the backplane board off the bracket Removing the Power Supply Remove the four screws a that secure the power supply Page Removing the Fan Removing the Memory Module Chapter Removing the Mainboard Removing the HDD Access LED cables System Troubleshooting Hardware Diagnostic ProcedureSystem Check Procedures Power system checkSystem external inspection System internal inspectionHardware diagnostic program System DiagnosisUSB disk Debug card Identifying the componentsViewing Bios checkpoints Post Code CheckpointsPost code checkpoints list Checkpoint DescriptionBootblock recovery code checkpoints Post code checkpoints Device Initialization Manager code checkpoints High Byte XY System Status Error Codes Operating condition HDD LED error codes DescriptionBios Recovery To create a Bios Recovery diskClearing Cmos Undetermined Problems  DimmChapter System Block Diagram and Board Layout System Block DiagramBoard Layout MainboardName Location Settings System JumpersChapter FRU Field Replaceable Unit List Exploded Diagram Part Name QTYFRU List QTYFront I/O Board Bracket Assy Brkt AS Front I/O HT-361 Memory Unifosa UNB-DIMM Dimm 1G Specification Appendix aNetwork Interface Specification System Memory