IBM 6151 Maintenance And Service Manual page 37

• The
Utilities are on the diagnostics 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 2-14 for more information about the
Utilities.
• The
Advanced Diagnostic Routines are on the diagnostics
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 2-17
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 2-18 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 2-20 for more information about the
SRNs.
(6/88) Diagnostics
2-6