Digital Equipment 3100R Series, Service Maintenance Manual

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Preface
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This Service Maintenance Manual is a troubleshooting guide that can be used for
reference when servicing DIGITAL Servers.
DIGITAL reserves the right to make changes to this Service Maintenance Manual
without notice. Accordingly, the illustrations and procedures in this document might
not apply to all DIGITAL Servers to be serviced since many of the diagnostic tests
are designed to test more than one product.
CAUTION: DIGITAL recommends that only
A+/DIGITAL Server 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
individual boards and subassemblies, no one should
attempt to make repairs at the component level or make
modifications to any printed circuit board. Improper
repairs can create a safety hazard. Any indications of
component replacement or circuit board modifications
might void any warranty or exchange allowances.