IBM i 830 Repair Manual page 943

status" of the other rows to see if there are any "failed" links, other than the
links that you recorded for the tower that you are working on.
Are there any other failed links that are not associated with the tower that you
are working on?
Yes No
↓
Go to step 12 of this procedure.
11. Using table "Appendix F. HSL Loop Configuration and Status Form" on
page 963, look to see if there are any operational links between this tower and a
failed link.
Are there any such operational links?
No Yes
↓
You can not use this procedure to power off the tower. Doing so will
cause resources to be lost and a possible system failure. You must
power down the system to continue working on this tower (see
"Powering On and Powering Off the System and Logical Partitions"
on page 922).
This ends the procedure.
12. Examine table "Appendix F. HSL Loop Configuration and Status Form" on
page 963, to determine if the tower that you are working on is linked to an
SPD migrated tower (FC 5033, 5034, 5035, or 5077).
Is an SPD migrated tower (FC 5033, 5034, 5035, or 5077), the next link
(leading or trailing) from the tower that you are working on?
No Yes
↓
You can not use this procedure to power off the tower. Doing so will
cause a system failure. You must power down the system to continue
working on this tower (see "Powering On and Powering Off the
System and Logical Partitions" on page 922).
This ends the procedure.
13. Are you working in a FC 5079 expansion tower or unit?
No Yes
↓
Power off only the expansion tower or unit (FC 5074) that you are
servicing.
Attention: Only one expansion tower inside the 1.8 meter rack may
be powered off at any given time!
Continue with step 14 of this procedure.
14. Were you directed to power off the tower to set the SPCN configuration ID?
No Yes
↓
Go to step 17 on page 930 of this procedure.
15. Verify that the "type numbers" (ie; IOPs, IOAs, etc.) contained in the
expansion tower or unit that you are powering off, matches what is shown on
the system by performing the following:
a. From the SST or DST menu, select the Start a service tool option.
b. Select the Hardware service manager option.
c. Select the Packaging Hardware Resources (systems, frames, cards, etc.) option.
Chapter 6. Data Recovery Procedures and General System Information
Data Recovery and General System Information
929