IBM iSeries Series Hardware Problem Analysis And Isolation page 152

Note: For 2105 and 9337 Disk Units, characters 4-8 of the bottom 16 character line of function 13
(5 rightmost characters of word 8) contain the disk unit serial number.
v Characters 13-16 of the bottom 16 character line of function 13 (4 rightmost characters of word 9)
contain the disk unit reference code.
12. Is the disk unit a 9337?
v Yes: Go to step 21 (See page 141).
v No: Is the disk unit reference code 0000?
– No: Continue with the next step.
– Yes: Find the table for the indicated disk unit type in System Reference Codes. Then, find unit
reference code (URC) 3002 in the table, and exchange the FRUs for that URC, one at a time.
Note: Do not perform any other PIPs that are associated with URC 3002.
This ends the procedure.
13. Are characters 9-16 of the bottom 16 character line of function 13 (word 9) B6xx 51xx?
v Yes: Use the B6xx table in the System Reference Codes. Perform problem analysis for the 51xx
unit reference code.
This ends the procedure.
v No: Continue with the next step.
14. The disk unit has device parity protection if the disk unit model number is equal to "070" or greater.
The disk unit model number is characters 14-16 of the bottom 16 character line of function 12 (word
5).
Is the model number equal to "070" or greater?
v No: Using the information from step 11 (See page 139), find the table for the indicated disk unit
type in System Reference Codes. Perform problem analysis for the disk unit reference code.
This ends the procedure.
v Yes: Continue with the next step.
15. The disk unit has device parity protection. Perform the following:
a. Perform function 3 to IPL the system to DST. Ignore any error messages that appear during the
IPL.
b. Look for a Service Action Log entry since the last IPL, and use it to fix the problem. See "Use the
service action log" on page 7. If a B6xx 5090 SRC occurred since the last IPL, look for other SRC
entries and take action on them first.
This ends the procedure.
16. Are the 2 rightmost characters of word 2 on the Problem summary form equal to 62?
v Yes: Are characters 9-16 of the top 16 character line of function 12 (word 3) equal to 00010004?
– Yes: Continue with the next step.
– No: Go to step 19 (See page 141).
v No: Use the information in characters 9-16 of the bottom 16 character line of function 13 (word 9)
and go to System Reference Codes. Use this information instead of the information in word 1 for
the reference code.
This ends the procedure.
17. Are characters 13-16 of the bottom 16 character line of function 12 (4 rightmost characters of word 5)
equal to 0000?
v No: Continue with the next step.
v Yes: Go to step 20 (See page 141).
18. Disk information available in this step is:
v Characters 13-16 of the bottom 16 character line of function 12 (4 rightmost characters of word 5)
contain the disk unit reference code.
v Characters 1-8 of the top 16 character line of function 13 (word 6) contains the disk unit address.
140
iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and
Isolation