v The Failing Item column of the tape unit reference code table
v Tape unit service guide
Note: Sometimes, the system is available but not performing an alternate IPL (type
D IPL). In this instance, any hardware failure of the tape unit I/O processor
or any device attached to it is not critical. With the exception of the loss of
the affected devices, the system remains available.
Read the “Overview” on page 445 before continuing with this procedure.
1. Do you need to exchange a possible failing device?
No Yes
↓ Perform the following:
For an internal tape unit, go to Removable Media in “Chapter 4.
Removal and Installation Procedures” on page 617.
For an external tape unit, go to the removal and installation
procedures in the device service information.
2. Do you need to exchange the tape unit I/O processor?
No Yes
↓ Exchange the tape unit I/O processor (see “Chapter 4. Removal and
Installation Procedures” on page 617). When you have completed the
removal and installation procedure, continue with the next step of this
procedure.
3. Are you working with a tape unit in the system unit or in an expansion unit?
Yes No
↓ Go to step 5 of this procedure.
4. Is the system available, and can you enter commands on the command line?
No Yes
↓ Go to step 12 of this procedure.
5. Display the selected IPL type (see iSeries Service Functions).
Is the displayed IPL type D?
No Yes
↓ Go to step 8 of this procedure.
6. Do you want to perform an alternate IPL (type D)?
No Yes
↓ Go to step 8 of this procedure.
7. Perform an IPL from disk by doing the following:
a. Power off the system (see “Powering On and Powering Off the System and
Logical Partitions” on page 922).
b. Select IPL type A in manual mode.
c. Power on the system.
d. Go to step 10 of this procedure.
8. Place the first tape of the latest set of SAVSYS tapes or SAVSTG tapes, or the
first IBM Software Distribution tape in the alternate IPL tape drive. The tape
drive automatically becomes ready for the IPL operation (this may take
several minutes).
Tape Unit PIPs
452
iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
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