Aspire Digital H342, H341 System Check Procedures, Power system check, System external 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, check if the power cable is properly connected to the system and AC source.

System external inspection

1.Inspect the LED indicators on the front panel, which can indicate the malfunction. For the LED locations and description of their behaviour, see “System LED Indicators” on page 5.

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 cover. For instructions on removing system cover, refer to “Removing the System Cover” on page 25.

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 cover.

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 Aspire EasyStore H341/H342 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents FRU Field Replaceable Unit List Features ChapterIcon Component System TourFront Panel 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 external inspection System Check ProceduresPower system check System internal inspectionUSB disk Hardware diagnostic programSystem Diagnosis Debug card Identifying the componentsPost code checkpoints list Viewing Bios checkpointsPost Code Checkpoints 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