Digital Equipment STARION 20 Series, Service Maintenance Manual

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Digital STARION 9xx & 20xx PC Troubleshooting
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Computer Troubleshooting
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Problem Possible Cause Action
Computer
operates
incorrectly after
installing
optional SIMMs SIMMs installed incorrectly.
Did not rerun BIOS Setup utility.
BIOS Setup utility changes not
saved before exiting.
SIMMs have failed.
Remove SIMMs and reinstall.
Rerun BIOS Setup utility.
Rerun BIOS Setup utility and save changes.
Remove SIMMs and reinstall.
Make sure bank 0 is filled with the correct SIMM
size, speedand type.
Replace SIMMs.
Computer
operates
incorrectly after
installing
optional
external cache
module
External cache module installed
incorrectly.
External cache module has
failed.
Remove external cache module and reinstall.
Replace external cache module.
Computer fails
to retain setup
information Computer battery has failed.
CMOS clear Jumper (J16)
enabled.
Replace computer battery.
Disable CMOS clear Jumper ( J16).