Disk Unit Pip; Du-Pip3 - IBM iSeries Series Hardware Problem Analysis And Isolation

v No: The communications IOA/IOP is not the failing item. One of the following could be causing the
problem.
– External cable.
– The network.
– Any system or device on the network
– The configuration of any system or device on the network.
– Intermittent problems on the network.
– A new SRC - go to "Starting point for all problems" on page 2 or ask your next level of support
for assistance.
Work with the customer or your next level of support to correct the problem.
This ends the procedure.
v Yes: Verify the external cable by running the cable wrap test. A wrap plug is required to perform the
test. This plug is available from IBM or your hardware service provider. Wrap plug part numbers can
be found in Table 3. Cleaning, testing, and miscellaneous parts in the Type, model, and part number
list page.
Does the cable wrap test complete successfully?
– Yes: Continue with the next step.
– No: The problem is in the cable. Exchange the cable.
This ends the procedure.
9. All the local hardware is good. This completes the local hardware verification. The communications
IOA/IOP and/or external cable is not the failing item.
One of the following could be causing the problem:
v The network
v Any system or device on the network
v The configuration of any system or device on the network
v Intermittent problems on the network
v A new SRC - go to "Starting point for all problems" on page 2, or ask your next level of support for
assistance
Work with the customer or your next level of support to correct the problem.
This ends the procedure.

Disk unit PIP

For use by authorized service providers.
This page contains the procedure to isolate a failure in a disk unit.
Read all safety procedures before servicing the system. Observe all safety procedures when performing a
procedure. Unless instructed otherwise, always power off the system or expansion tower where the FRU is
located, (see Power on/off the system and logical partitions) before removing, exchanging, or installing a
field-replaceable unit (FRU).
DU-PIP3: Use this procedure to determine the system reference code (SRC), which is used to isolate a
problem and to determine the failing device.
Note: When exchanging a disk unit, go to the Recovery procedures.
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.
2. Look in the Service action log (see "Use the service action log" on page 7) for other errors logged at
or around the same time as the 310x SRC. If no entries appear in the service action log, use the
product activity log (see "Use the product activity log" on page 9). Use the other SRCs to correct the
Analyze hardware problems
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