IBM iSeries Series Hardware Problem Analysis And Isolation page 237

Use this procedure to isolate tape unit power problems. Read the "Tape unit PIPs" on page 224 before
continuing with this procedure.
1. If the system has logical partitions, perform this procedure from the logical partition that reported the
problem. To determine if the system has logical partitions, go to Determine if the system has logical
partitions before continuing with this procedure.
2. Is the tape unit in an external enclosure, and does the tape unit enclosure have a power switch?
v Yes: Is the tape unit powered on?
– Yes: Continue with the next step.
– No: Go to step 8 (See page 226).
No: Go to "TU-PIP3" on page 228.
v
This ends the procedure.
3. Press the Unload switch on the front of the tape unit.
Is a data cartridge or a tape reel present?
Yes: Attempt to remove the data cartridge or tape reel from the tape unit.
v
Can you remove the data cartridge or tape reel?
– Yes: Continue with the next step.
– No: The tape unit is the failing part. Go to "TU-PIP3" on page 228.
Note: If the tape unit is an 8mm tape drive, go to Tape cartridge - Manual removal first.
This ends the procedure.
No: Continue with the next step.
v
4. Is the tape unit installed in an FC 5032 removable storage unit?
v No: Are you working on an 8mm tape drive?
– Yes: Continue with the next step.
– No: Go to step 6 (See page 225).
Yes: Go to Tape Unit PIP 5 in the Migrated Expansion Tower Problem Analysis, Repair and Parts
v
manual on the V5R1 Supplemental Manuals web site
This ends the procedure.
5. Is the system powered on?
Yes: Continue with the next step.
v
No: The 8mm tape drive cannot operate if the system is powered off and the external I/O signal
v
cable is connected.
Perform the following:
a. Disconnect the external I/O signal cable from the 8mm tape drive.
b. Continue with the next step.
6. Is the tape unit Power light on?
Yes: Continue with the next step.
v
No: Perform the following:
v
a. Ensure that the power cable connects tightly to the power cable connector at the back of the
tape unit.
b. Ensure that the power cable connects to a power outlet that has the correct voltage.
c. Go to step 8 (See page 226).
7. Set the tape unit Power switch to the Power Off position (see Table 1. Power off and power on
positions of tape unit power switches (See page 226) in this topic).
Note: Determine if the system has logical partitions. Go to Determine if the system has logical
partitions before continuing with this procedure.
.
Analyze hardware problems
225