Compaq 164SX user manual Hardware Startup, Troubleshooting Steps No Video

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Troubleshooting

This chapter contains information about troubleshooting hardware and software during AlphaPC 164SX startup.

8.1 Hardware Startup

Use the following troubleshooting steps if video is not working on your system. If you still have no video after reviewing these steps, please call your system vendor.

Troubleshooting Steps: No Video

1.Check the connection to the ac outlet.

2.Check the voltage setting on the power supply (115 V ac in the U.S.).

3.Check that the frequency/switch selection matches the speed of the Alpha chip.

4.Check that the CPU fan is connected and spinning.

5.Ensure that the flash ROM update procedure was performed correctly. If you have a terminal attached to COM1, check the output for error messages after verifying that the flash ROM update procedure was performed correctly.

6.Reseat the video card and ensure that it is connected to the monitor.

7.Reseat the DIMMs.

8.Replace the DIMMs.

Troubleshooting 8–1

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Contents Digital Unix October Contents Troubleshooting Memory and Microprocessor ConfigurationInterrupts and ISA Bus Addresses Alpha SRM Console FirmwarePage Figures Tables Page Manual Conventions and Terminology About This ManualTerms The following terms are used in this manual Manual Conventions and TerminologyAlphaPC 164SX Features FeaturesAlphaPC 164SX Switch/Connector/Component Location XB1 AlphaPC 164SX Switch/Connector/Component ListPower Requirements Power RequirementsPower Supply DC Current Requirements Environmental RequirementsPhysical Parameters Physical ParametersAlphaPC 164SX Motherboard Environmental Requirements 2shows the ATX hole specification for the AlphaPC 164SX Physical Parameters ATX Hole SpecificationPhysical Parameters ATX I/O Shield Requirements 3shows the ATX I/O shield dimensions for the AlphaPC 164SXPage Fail-Safe Booter CF7 AlphaPC 164SX Switch ConfigurationMini-Debugger CF3 CPU Speed Selection CF64AlphaPC 164SX Configuration Switches Fail-Safe Booter CF7PCI Bus Connector Pinouts AlphaPC 164SX Connector Pinouts1shows the PCI bus connector pinouts PCI Bus Connector PinoutsREQ# PCI Bus Connector PinoutsISA Expansion Bus Connector Pinouts ISA Expansion Bus Connector Pinouts2shows the ISA expansion bus connector pinouts ISA Expansion Bus Connector Pinouts J22, J23Sdram Dimm Connector Pinouts Sdram Dimm Connector Pinouts3shows the Sdram Dimm connector pinouts Sdram Dimm Connector Pinouts J7 through J10Eide Drive Bus Connector Pinouts Eide Drive Bus Connector Pinouts4shows the Eide drive bus connector pinouts Eide Drive Bus Connector Pinouts J5, J6Parallel Bus Connector Pinouts Diskette Floppy Drive Bus Connector PinoutsDiskette Floppy Drive Bus Connector Pinouts 5shows the diskette floppy drive bus connector pinoutsKeyboard/Mouse Connector Pinouts COM1/COM2 Serial Line Connector PinoutsCOM1/COM2 Serial Line Connector Pinouts 7shows the COM1/COM2 serial line connector pinoutsInput Power Connector Pinouts Srom Test Data Input Connector PinoutsEnclosure Fan Power Connector Pinouts Srom Test Data Input Connector PinoutsSoft Power Connector Pinouts Microprocessor Fan Power Connector PinoutsMultipurpose Connector Pinouts Microprocessor Fan Power Connector PinoutsJ20 Multipurpose Connector PinoutsConfiguring Sdram Memory Memory and Microprocessor ConfigurationAlphaPC 164SX Sdram Memory Configurations Upgrading Sdram MemoryUpgrading Sdram Memory Increasing Microprocessor Speed Increasing Microprocessor SpeedPreparatory Information Required ToolsInstalling the 21164PC Microprocessor Fan/Heat-Sink Assembly 6Memory and Microprocessor Configuration Interrupts Interrupts and ISA Bus Addresses1lists each AlphaPC 164SX ISA interrupt and its source ISA InterruptsISA I/O Address Map ISA I/O Address Map2lists the AlphaPC 164SX ISA I/O space address mapping ISA I/O Address MapAlpha SRM Console Firmware Alpha SRM Console Firmware ConventionsFollowing conventions are used in this section Alpha SRM Console Firmware Conventions Basic Alpha SRM Console Command Descriptions Basic Alpha SRM Console Command DescriptionsNone ArcBoot 6Alpha SRM Console Firmware Boots the system from the default boot device Writes data to the specified address DepositData to be deposited Clears the first 512 bytes of physical Examine Displays the contents of the specified address12Alpha SRM Console Firmware Examines Fwupdate Set Sets or modifies the value of an environment variableEnvironment variable to be assigned a new value 16Alpha SRM Console Firmware Show Environment Variables for Alpha SRM Console Commands Environment Variables for Alpha SRM Console CommandsEnvironment Variable Descriptions Architecture-Required Environment Variables Off System-Defined Environment VariablesSet language Init AlphaBIOS Keys AlphaBIOS ConventionsWindows NT Workstation Press F2 to start the AlphaBIOS setup programAlphaBIOS Setup Screen AlphaBIOS Upgrade Options Screen Press Enter to continue the installationAlphaBIOS Warning Screen AlphaBIOS Upgrade SRM Console Screen Press F10 to continue the installationAlphaBIOS Upgrade Complete Screen 6shows an example of the AlphaBIOS Upgrade Complete screenInstalling the Digital Unix Operating System Installing the Digital Unix Operating SystemRequirements Page Troubleshooting Troubleshooting Steps No VideoHardware Startup Post Codes Beep CodesBeep Codes Beep CodesPost Codes Fail-Safe Booter Fail-Safe BooterProceed to .4 and follow the procedures Battery Recycle/Disposal Information Battery Recycle/Disposal InformationPage Customer Support Support, Products, and DocumentationNews Press releases DescriptionSupporting Products Power SupplySupporting Products MemoryAssociated Documentation Associated DocumentationEnclosure Northwestern El Paso, TX Phone4Support, Products, and Documentation