IBM Application System/400 Service Information page 28

How to Use the Unit Reference
Code Tables
Note: The table id is the 4 leftmost characters of
the data for Function 11 on the control panel or
the type field when displayed online.
When instructed to use the unit reference code
tables, do the following:
When the system displays a device or functional
unit reference code:
1. Go to the section for the device or functional
unit and find the unit reference code in the
table.
Some unit reference codes are grouped, for
example:
2014,
2018 to
201C,
201E
All information applies to unit reference codes
2014, 2018,2019,201A,201B,201C, and
201E.
The unit reference codes are arranged in
hexadecimal sequence, with numeric charac-
ters listed before alphabetic characters. For
example, unit reference codes 0001 through
0009 are listed before unit reference codes
OOOA through OOOF.
2. Perform the action indicated in the
Description/Action column of the reference
code table to correct the problem. If this does
not correct the problem, exchange the failing
items or parts in the order they are listed in
the table.
3. If no action is indicated in the unit reference
code table, exchange the failing items or parts
indicated in the table.
Notes:
a. When exchanging the failing items, use
the Chapter 4, "Removal Procedures" on
page 4-1.
b. When instructed to perform problem iso-
lation procedures, go to Chapter 3,
"Problem Isolation Procedures" on
page 3-1.
The failing item listed first should be
exchanged first. If exchanging a failing item
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AS/400 9401 Service Information
does not correct the problem, reinstall the ori-
ginal item and exchange the next failing item
in the list. Continue to exchange and reinstall
the failing items one at a time until the
problem is corrected. If exchanging the failing
items does not correct the problem, ask your
next level of support for assistance.
4.
If
the failing item is "Licensed Internal Code
(LlC)," ask your next level of support to submit
an "Authorized Program Analysis Report
(APAR)" or a "Licensed Internal Code trouble
report (LlCTR)."