You can perform an I/O processor (IOP) reset by performing an IPL of the
I/O processor. All devices that are attached to the IOP will reset.
The following steps describe how to load an IOP, how to configure a tape
drive, how to vary on tape devices, and how to make tape devices available.
13.
Is the tape device you are working on an 8mm tape drive?
Yes
No
↓
Go to step 15 of this procedure.
14.
Verify the following on the 8mm tape drive:
v
The power and external signal cables are connected correctly.
v
The Power switch is set to the On position (pushed in).
Note:
The SCSI I/O bus terminating plug for the system-external signal cables
is connected internally in the 8mm tape drive. The 8mm tape drive
does not need and must not have an external terminating plug.
Is the 8mm tape drive Power light on, and is the Disturbance light off?
Yes
No
↓
Go to “TU-PIP2” on page 448 to correct the problem.
This ends the procedure.
15.
Is a data cartridge or a tape reel installed in the tape device?
No
Yes
↓
Remove the data cartridge or tape reel. Then continue with the next
step of this procedure.
16.
Can you enter commands on the command line?
Yes
No
↓
Perform the following:
a.
Power off the system (see “Powering On and Powering Off the
System and Logical Partitions” on page 922).
b.
Power on the system.
The system performs an IPL and resets all devices. If the tape device
responds to SCSI address 7, the system configures the tape device.
This ends the procedure.
17.
Verify that automatic configuration is On by entering
DSPSYSVAL QAUTOCFG
(the Display System Value command) on the command line.
Is the
Autoconfigure device
option set to 1?
Yes
No
↓
Perform the following:
a.
Press the Enter key to return to the command line.
b.
Set automatic configuration to On by entering
CHGSYSVAL QAUTOCFG '1'
Tape Unit PIPs
Chapter 3. Problem Isolation Procedures (PIPs), Failing Items, and Symbolic FRU Isolation
457
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