Digital Equipment STARION 20 Series, Service Maintenance Manual

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Digital STARION 9xx & 20xx PC Preface
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Preface
The Digital Starion 9xx & 20xx PC Family Service Maintenance Manual is a troubleshooting guide that
can be used for reference when servicing the Starion 9xx & 20xx line of PC’s.
Digital Equipment Corporation reserves the right to make changes to the Digital Starion 9xx & 20xx series
without notice. Accordingly, the diagrams and procedures in this document may not apply to the
computer(s) you are servicing since many of the diagnostic tests are designed to test more than one
product.
CAUTION
Digital recommends that only A+ certified engineers attempt to repair this equipment.
All troubleshooting and repair procedures are detailed to support subassembly/module
level exchange. Because of the complexity of the indivual boards and subassemblies, no
one should attempt to make repairs at component level or to make modifications to any
printed wiring board. Improper repairs can create a safety hazard.
Any indications of component replacement or printed wiring board modifications may
void warranty or exchange allowances.