IBM i 830

Note: If the system has logical partitions, then all operations on the console refer
to the console of the logical partition in which you are working.
Note: To locate a secondary partition’s console go to iSeries Service Functions.
Use this procedure only to power off an expansion tower or unit when you are
performing one of the following:
v Removing or replacing a failing part within an expansion tower or unit.
v Adding, moving, removing, or replacing a failing item within an expansion
tower or unit.
Do not use this procedure on the system unit or the system unit’s integrated
expansion unit. For system units and system unit integrated expansion units use
the “Powering On and Powering Off the System and Logical Partitions” on
page 922 procedure.
Do not use this procedure to replace disk units that are supported under device
concurrent maintenance. Use device concurrent maintenance instead.
Do not use this procedure on FC 503x, FC 5076 and FC 5077 SPD migrated towers.
For those towers, use the “Powering On and Powering Off the System and Logical
Partitions” on page 922 procedure.
Do not use this procedure for Feature code 504x towers. If you are powering off a
504x tower, then power off the system unit. Go to “Powering On and Powering Off
the System and Logical Partitions” on page 922.
Attention: Perform this action only with the assistance of the customer.
1. Is the expansion tower or unit a FC 5074, 5079?
Yes No
↓ The expansion tower or unit cannot be configured as ″switchable″
under HSL OptiConnect. Go to step 9 on page 928 of this procedure.
2. Determine if the tower is configured as a switchable tower under iSeries 400
OptiConnect for high-speed link (HSL). To determine this: ask the customer or
refer to ″Service Reference Procedures″ in the iSeries Service Functions
information.
Is the tower configured as a switchable tower?
Yes No
↓ The expansion tower or unit is privately owned by this system. Go to
step 9 on page 928 of this procedure.
3. Determine if the system which controls the SPCN for this tower is also the
system which owns the tower’s HSL I/O bridge resource. To determine this,
refer to the ″Service Reference Procedures″ in the iSeries Service Functions
information.
Is the tower’s SPCN controlling system the same as the tower’s HSL I/O
bridge owner?
No Yes
↓ Go to step 7 on page 928 of this procedure.
4. Is the tower’s SPCN controlling system already IPL’d and running OS/400 or
DST?
Data Recovery and General System Information
Chapter 6. Data Recovery Procedures and General System Information 927