IBM 6150 Hardware Maintenance Manual page 28

TNL SN20-9843 (03-27-87) to 75X0152 or 75X0166
•
The Utilities are on the diagnostic diskettes. They provide utility
functions such as exercising communication links, and displaying special
information.
The Utility programs are used in a non-directed manner to provide
control and information to the system user or service technician. See
page 2-13 for more information about the Utilities.
• The Advanced Diagnostic Routines are on the diagnostic diskettes. They
are used by the service technician to isolate failures to a
Field-Replaceable Unit (FRU).
The Advanced Diagnostic Routines do the same tests as the Diagnostic
Routines plus additional tests that require action by the service
technician. The additional tests may require the use of wrap plugs,
keying certain patterns on the keyboard, or answering questions about
displayed information. See page 2-16 for more information about the
Advanced Diagnostic Routines.
• The Installation Verification option compares the installed features list
built by the Loadable POST programs to the configuration record on the
fixed disk. See page 2-17 for more information about the Installation
Verification option.
When a problem is detected, the Problem Determination Procedures (PDPs) in
the Problem Determination Guide direct the system user in a checkout of the
IBM RT PC System Unit. The PDPs ask the system user to record a Service
Request Number (SRN) and provide it to the service organization. The
service technician uses the SRN to determine which FRU is needed to repair
the system. See page 2-19 for more information about the SRNs.
(3/87) Diagnostics 2-5