IBM i 830 Repair Manual page 468

Tape Unit PIPs
Note: If the system has logical partitions, perform this procedure from the logical
Use this procedure to reset an IOP and its attached tape units.
Note: If disk units are attached to an IOP, you must power off the system, then
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iSeries Model 830, 840, SB2, and SB3 Problem Analysis, Repair and Parts V5R1
partition that reported the problem.
power it on to reset the IOP.
1. Is the tape unit powered on?
No Yes
↓
Perform the following:
a. Press the Unload switch on the front of the tape unit you are
working on.
b. If a data cartridge or a tape reel is present, do not load it until you
need it.
c. Continue with the next step of this procedure.
2. Verify the following:
v If the external device has a power switch, ensure that it is set to the On
position.
v Ensure that the power and external signal cables are connected correctly.
Note: For every 8mm and 1/4 inch tape unit, the I/O bus terminating plug
for the SCSI external signal cable is connected internally. These
devices do not need and should not have an external terminating
plug.
3. Did you press the Unload switch in step 1 of this procedure?
Yes No
↓
Press the Unload switch on the front of the tape unit you are working
on.
If a data cartridge or a tape reel is present, do not load it until you
need it.
Continue with the next step of this procedure.
4. Can you enter commands on the command line?
Yes No
↓
Go to step 12 of this procedure.
5. Has the tape unit operated correctly since it was installed?
Note: If you do not know, continue with the next step of this procedure.
Yes No
↓
Go to step 12 of this procedure.
6. If a system message displayed an I/O processor name, a tape unit resource
name, or a device name, record the name for use in step 7 of this procedure.
You may continue without a name.
Does the I/O processor give support to only one tape unit?
Note: If you do not know, continue with the next step of this procedure.
No Yes
↓
Perform the following: