Service Request Number Description - IBM 6150 Hardware Maintenance Manual

TNL SN20-9843 (03-27-87) to 75X0152 or 75X0166
Service Request Number Description
When a problem is detected with system operation, the Problem
Determination Procedures (PDPs) in the Problem Determination Guide are
used to determine the cause and corrective action. If the PDPs determine
the failure is in the hardware, the system user is given a Service Request
Number (SRN) to record for use by the service organization.
The SRN is used by the service technician to determine which
field-replaceable unit (FRU) is needed to repair the system. The SRN
contains from one to four Service Repair Adion (SRA) numbers. Each SRA
number represents a FR U or a special repair action.
The Problem Isolation Charts (PICs) in Section 3 use the SRA numbers to
isolate the failure to a failing FRU. Appendix B contains an SRA to FRU
Cross-Reference List to provide the service technician with the part number
of the failing FRU.
An SRN always contains a
Source Number
and at least one SRA. See the
following pages for a description of the source number and the SRA
numbers. The following example of an SRN contains a source number and
four SRA numbers.
13-234-100-B34-D64
(3/87) Diagnostics
2-19