Diagnostic Programs Types
Note: A flashing number in
the LED while runing standalone diagnostics? Look HERE
.
Service Request Numbers (SRNs)
Resident POST -
Stored in ROM on the planar. They run at system
power-on. The resident POST programs check the system unit components needed
to load programs from the fixed disk or diskette. See
HERE
for more info.
Loadable POST -
Load from fixed disk or diags diskette. They run
after Resident POST. The loadable POST programs first sense the adapters
and options installed in the system unit and build an Installed Features
List. Before any checkout routines are run, the installed features list
is compared to the Configuration Record on the fixed disk. See HERE
for more info.
Note: Pressing
Ctrl - Alt - Pause causes the Loadable POST programs to run.
Diagnostics Routines -
On the diagnostic diskettes. The Problem Determination
Guide directs the system user to run the Diagnostic Routines to check the
system unit during problem determination. See HERE
for more info.
Utilities -
On the diagnostics diskette They provide utility functions
such as exercising communications 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 HERE
for more info.
Advanced Diagnostics Routines
on diagnostic diskettes Used to isolate failures
to a FRU. The Advanced Diagnostics Routines do the same tests as the Diagnostics
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 HERE for more
info.
Installation Verification -
compares installed features list built by
the Loadable POST programs to the configuration record on the fixed disk.
See HERE for more info.
Two
Digit Display Codes During Diagnostic Programs
The following codes will flash at one second intervals
while running the standalone diagnostic programs.
LED
Description
02 A read error occured
while using the diskette drive.
99 A program check
or a machine check occurred.
c6-xx An undetermined error occurred.
c6-20 Out of memory space
This can be caused byone of the following things on a system unit with
1MB memory:
Diagnostic programs were run following a utility program
Diagnostic programs run with the "Run Multiple Times" option selected.
Multiple diagnostic selections made
Note: To continue, insert RT
PC Diagnostics 1 and press Ctrl-Alt-Pause.
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