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Hardware » Books » End-User »
Silicon Graphics Zx10 Visual Workstation Owner's Guide
(document number: 007-4327-002 / published: 2000-09-20)
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Chapter 5. Troubleshooting Operational Problems
Use this chapter to identify and resolve some common basic system problems.
If your system is not functioning properly, first do the following:
Verify the system's power state and ensure the system is properly connected to AC power. See Chapter 1, “Setting Up the Hardware” and Chapter 4, “Operating the System”.
Ensure the data and power cables are properly connected to any external peripheral devices.
Ensure the data and power cables are properly connected to all internal peripheral devices.
If you cannot resolve the problem or if the instructions in the following sections direct you to do so, contact SGI for further help. Refer to the documentation delivered with various peripheral devices for troubleshooting help if there are problems these devices.
The following chapters in this document contain information and instructions that may be helpful when carrying out troubleshooting procedures and attempting to apply solutions.
Table 5-1. Fails to power on
Reason
| Solution
|
|---|
System is not at full power (Power
LED lights amber).
| Press the Power button to attempt to apply full power.
The Power LED lights green when the system is at full
power.
| System will not awaken from
"suspend" state.
| Verify that the Shutdown Utility (shutdown) is installed.
If not, turn system power off and then on again. If so, use
the Power Down the Computer option. See Chapter 4, “Operating the System”
and
Chapter 6, “Reinstalling the Operating System”
.
| Power cord is not connected.
| Verify the power cord is connected to the power
receptacle.
| Power is not available at the AC
power outlet.
| Verify power is available at the AC power outlet. Test the
outlet with a known working device.
| Internal power cables are not
connected.
| Open the base unit and ensure all power cables are
connected.
| Power cord is faulty.
| Replace power cord.
|
Table 5-2. Does not boot from the expected boot device
Reason
| Solution
|
|---|
Boot sequence is not correctly set.
| Change the boot sequence. See the System Board Guide for
information on running BIOS Setup and changing the
boot sequence.
| Operating system is not on the
system drive.
| Reinstall the operating system.
|
Table 5-3. Series of beeps and error messages display
Message
| Explanation and Solution
|
|---|
Refresh Failure
| Bad memory refresh circuitry on the system board.
Remove and reinstall DIMM(s). If error persists, replace
the DIMM(s).
| Parity Error
| Parity error in the first 64 KB block of memory. Remove
and reinstall DIMM(s). If error persists, replace DIMM(s).
| Base 64 KB Memory Error
| Memory failure in the first 64 KB. Remove and reinstall
the DIMM(s). If error persists, replace the DIMM(s).
| Timer Not Operational
| Memory failure in the first 64 KB, or Timer 1 on the system
board is not functioning. Contact SGI for support.
| Processor Error
| The CPU on the system board generated an error. Contact
SGI for support.
| 8042 - Gate A20 Failure
| The BIOS cannot switch to protected mode. Contact SGI
for support.
| Processor Exception Interrupt
| The CPU generated an exception interrupt. Contact SGI
for support.
| Display Memory Read/Write Error
| The sound controller is faulty. Contact SGI for support.
| ROM Checksum Error
| The ROM checksum value does not match the value
encoded in the BIOS. Contact SGI for support.
| CMOS Shutdown Register
Read/Write Error
| The shutdown register for CMOS RAM failed. Contact
SGI for support.
| Cache Error/External Cache Bad
| The external cache is faulty. Contact SGI for support.
|
Table 5-4. Does not boot from drive A (floppy disk drive) or other expected boot device
Reason
| Solution
|
|---|
Boot disk is corrupt or does not have
the correct boot utilities.
| Replace the bootable diskette with a known working
diskette.
| Boot sequence may be set to C, A, in
which case the machine will not boot
from A if there is an operating system
on C.
| Change the boot sequence. See the System Board Guide for
information on running BIOS Setup and changing the
boot sequence.
| BIOS is corrupted.
| Load a new BIOS to the system's flash memory. See the
System Board Guide.
|
Table 5-5. Floppy disk drive is not recognized
Reason
| Solution
|
|---|
BIOS is not configured properly.
| Reconfigure the floppy disk drive parameters in BIOS
Setup. See the System Board Guide for information on
running BIOS Setup and changing the boot sequence.
| Power cable is not connected.
| Open the base unit and ensure the power cable is
connected.
| Data cable is not connected.
| Open the base unit and ensure the data cable is connected.
|
Table 5-6. System hard disk drive is not recognized
Reason
| Solution
|
|---|
Power cable is not connected.
| Open the base unit and ensure the power cable is
connected.
| Data cable is not connected.
| Open the base unit and ensure the data cable is connected.
| SCSI termination is enabled on the
hard disk drive you installed.
| Disable SCSI termination. See the documentation
delivered with the hard disk drive.
| Some viruses cause the system to not
recognize hard disk drives.
| Run a virus scan program that checks the Master Boot
Record. Clear any viruses detected by the program.
|
Table 5-7. CD-ROM drive is not recognized
Reason
| Solution
|
|---|
Power cable is not connected.
| Open the base unit and ensure the power cable is
connected.
| Data cable is not connected.
| Open the base unit and ensure the data cable is connected.
|
Table 5-8. Total amount of memory does not display
Reason
| Solution
|
|---|
One or more memory modules are
faulty.
| Identify faulty memory modules by swapping modules
until the faulty one is found.
| Memory modules are not properly
seated in their sockets.
| Reseat memory modules in their sockets.
|
Table 5-9. I/O Card parity error message displays
Reason
| Solution
|
|---|
Faulty card is installed in the ISA slot.
| Remove the ISA card and then restart the system.
|
Table 5-10. System is powered on, but screen remains blank
Reason
| Solution
|
|---|
Monitor is not powered on.
| Turn on power to the monitor.
| Power cord is not connected.
| Verify the power cord is connected to the power
receptacle.
| Video cable is not properly
connected.
| Verify the video cable is connected to the monitor and to
the system's video out connector.
| Graphics card is not properly seated
in its socket.
| Open the base unit and reseat the graphics card.
| Selected resolution is not supported
by the monitor.
| Select a supported resolution. See the graphics card
documentation for more information.
| An improper video display driver is
installed.
| Install a valid video display driver. See the graphics card
documentation for more information.
|
Table 5-11. No sound can be heard
Reason
| Solution
|
|---|
Speaker volume is low or off.
| Adjust speaker volume up.
| Speaker cable is not properly
connected.
| Verify speaker cables are connected to the system's line
out port.
| Volume is turned off in the software
volume control or mixer program.
| Open the software volume control or mixer program and
turn up the volume.
| Headphones are plugged into the
system.
| Unplug the headphones.
|
Table 5-12. Cannot connect to other systems on LAN
Reason
| Solution
|
|---|
Ethernet cable is disconnected.
| Verify the Ethernet cable is connected. If the cable is
properly connected, notify your network administrator.
| Networking software is configured
incorrectly.
| Review the network settings in the operating system,
and/or notify your network administrator.
|
Table 5-13. Cannot plot to network printer or plotter on LAN
Reason
| Solution
|
|---|
Network cable is disconnected.
| Verify the network cable is connected.
| Printer or plotter is not added to your
system.
| Add the printer using the operating system tools, and/or
notify your network administrator.
| Plot node does not recognize your
system.
| Notify your network administrator.
|
Table 5-14. CD-ROM drive LED does not light when system power is on
Reason
| Solution
|
|---|
Power cable or data cable is not
connected.
| Open the base unit and ensure the power cable and data
cable are properly connected.
|
Table 5-15. Floppy disk drive LED does not light when system power is on
Reason
| Solution
|
|---|
Power cable or data cable is not
connected.
| Open the base unit and ensure the power cable and data
cable are properly connected.
|
Table 5-16. “Battery voltage low” message displays
Reason
| Solution
|
|---|
Lithium battery voltage on the
system board is low.
| Replace the lithium battery on the system board.
|
Table 5-17. System loses BIOS configuration information
Reason
| Solution
|
|---|
Lithium battery voltage on the
system board is low. The system also
displays a "battery voltage low"
message during the system boot.
| Replace the lithium battery on the system board.
|
Table 5-18. DMA bus timeout message displays
Reason
| Solution
|
|---|
Failure in DMA bus logic has
occurred.
| Contact SGI for support.
|
Table 5-19. “Invalid configuration information for SLOT XX” message displays
Reason
| Solution
|
|---|
System is not properly configured to
recognize the new ISA card.
| Use BIOS Setup to reserve system resources for the ISA
card. See the System Board Guide.
|
Silicon Graphics Zx10 Visual Workstation Owner's Guide
(document number: 007-4327-002 / published: 2000-09-20)
table of contents | additional info | download
Front Matter
About This Guide
Chapter 1. Setting Up the Hardware
Chapter 2. Setting Up the Software
Chapter 3. Configuring the System
Chapter 4. Operating the System
Chapter 5. Troubleshooting Operational Problems
Chapter 6. Reinstalling the Operating System
Chapter 7. Gaining Access to System Components
Chapter 8. Upgrading the System
Chapter 9. Servicing the System
Chapter 10. System Hardware and Specifications
Appendix A. Ergonomics Guide
Index
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