Browse Prior Art Database

ON-Field Replaceable Unit Identification and Error Storage

IP.com Disclosure Number: IPCOM000113514D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 84K

Publishing Venue

IBM

Related People

Freier, F: AUTHOR [+3]

Abstract

It mostly needs a long time to react to failing processor hardware, which either was replaced erroneously, or had to be replaced because of a quality problem during card assembly. The reason for this delay is the event driven incident reporting mechanism and the manufacturing turn in procedure for failing hardware. Incident reporting is the communication between development engineering and field engineering, using a field engineering owned databank system (RETAIN). The manufacturing failing hardware turn in procedures are country dependent and therefore different, because of country bounderies and the different customs declarations. Very often the two elements of one and the same event do not coincide. In this case, there is no possibility to recreate the error and to find the defect.

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This is the abbreviated version, containing approximately 52% of the total text.

ON-Field Replaceable Unit Identification and Error Storage

      It mostly needs a long time to react to failing processor
hardware, which either was replaced erroneously, or had to be
replaced because of a quality problem during card assembly.  The
reason for this delay is the event driven incident reporting
mechanism and the manufacturing turn in procedure for failing
hardware.  Incident reporting is the communication between
development engineering and field engineering, using a field
engineering owned databank system (RETAIN).  The manufacturing
failing hardware turn in procedures are country dependent and
therefore different, because of country bounderies and the different
customs declarations.  Very often the two elements of one and the
same event do not coincide.  In this case, there is no possibility to
recreate the error and to find the defect.

      During the execution of a repair action, in order to replace
the failing hardware Field Replaceable Unit (FRU) on a processor, the
error information triggering this event is written onto a Serial
Electrical Erasable Programmable Read Only Module (SEEPROM) mounted
on the FRU.  Independent from human interference all engineering
error data are dumped onto the FRU, even the reporting number of the
field engineering report is stored.  This means, as soon as the
failing FRU returns to manufacturing or to the development site, the
error information can be retrieved from the FRU and the correct
processor (system) setup to recreate the error can be installed.  If
there is no error information stored on the FRU, the FRU was replaced
erroneously and has either No Defect Found (NDF), or the Maintenance
Package has a design defect.  In case of NDF the FRU will not be
destroyed, it will be released again into the spare part flow.  If
there is error information on the FRU, the FRU will be evaluated by
development engineering and in case of a hardware quality problem,
corrective process improvements will be provided to manufacturing,
immediately.

      The SEEPROM will carry the Vital Product Data (VPD...